In functionalized hydrocarbons, a functional group is attached to the core of hydrocarbons (alkanes, alkenes, alkynes). Some examples are methanol (where the hydroxyl group is attached to methane) and it belongs to the chemical class of alcohols.
In organic chemistry, hydrocarbons are organic compounds made entirely of hydrogen and carbon. Hydrocarbons are examples of Group 14 hydrides. Hydrocarbons are generally colorless and hydrophobic, and their odor is usually faint or exemplified by the liquid odor of gasoline or lighters.
Examples of hydrocarbons include gasoline, kerosene, lamp oil, and furniture oil. If someone accidentally drinks a hydrocarbon product that gets into their lungs, it can cause breathing problems. Severe injury or even death can result. Crude oil is a mixture of relatively volatile liquid hydrocarbons (compounds composed primarily of hydrogen and carbon), but it also contains nitrogen, sulfur, and oxygen.
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True or false risk is defined as an inherent chemical or physical characteristic
It is False that risk is defined as an inherent chemical or physical characteristic.
Risk is the probability that a person if exposed to a hazard will experience( or get harmed) an adverse health effect, it also goes with situations with equipment of property loss or harmful effects on the environment.Many factors influence the degree of risk such as the nature of exposure, the severity of the effect, how the person is been exposed, and so on.
Whereas the hazard word has a confusing definition, it refers to a physical or chemical characteristic that has the potential for causing damage to property, people, or the environment. Most of the time hazard gets combined with the word Risk.
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What was collected in the sample for chemical analysis? what was concluded from the results of this experiment?
Miller performed the chemical analysis experiment and collected samples of several organic compounds ( like formaldehyde and hydrogen cyanide) and other complex molecules like amino acid that were called as hydrocarbons.
Miller concluded from the experiment that the early stage in the origin of life could have been supported by the abiotic synthesis of organic compounds.
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What can be said about the mass of the 1.0 m hcl and 1.0 m naoh solutions after they were combined?
The can be said about the mass of the 1M HCl and 1 M NaOH after they were combined
The combined mass of the 1 M HCl and 1 M NaOH was the sum of their respective masses.
So, hydrochloric acid reacts with sodium hydroxide approach to form sodium chloride and water. This response can be represented as: Hydrochloric acid + Sodium hydroxide → Sodium chloride + Water.
The mass of the 1.0 M HCl and 1.0 M NaOH solutions after they were combined is 76.5g.
HCl + NaOH ⇄ NaCl + H₂O
1 mole of HCl produces 1 mole of NaCl
36.5g of HCl produces= 58.5g of NaCl
36.5g of HCl produces= 18g of H₂O
Total mass after combining = 58.5g + 18g = 76.5g
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Because ___ occurs without oxygen scientist believe this stage in cellular respiration evolved first
Because glycolysis occurs without oxygen scientists believe this stage in cellular respiration evolved first.
Glycolysis, which does now no longer require oxygen and is stated to have developed earlier than the opposite energy-generating tiers of cell breathing at a time while there has been no oxygen withinside the Earth's environment The first step is breathing, which is anaerobic and does now no longer require oxygen.
Glycolysis happens withinside the cytosol of the cellular and does now no longer require oxygen, while the Krebs cycle and electron shipping arise in mitochondria and require oxygen.
The first step in cell breathing, glycolysis, happens withinside the cytoplasm of the cellular. A glucose molecule is damaged down into molecules of pyruvate (pyruvate).
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Which polymers are composed of amino acids? nucleic acids carbohydrates proteins monomers
Proteins are composed of amino acid
What is amino acid?
Protein is constructed from amino acids. An extended chain of amino acids makes up proteins. There are a huge variety of proteins in your body, each of which performs a vital function.
Amino acid sequences differ for every protein. The protein can adopt various shapes and perform a variety of bodily tasks depending on the sequence.
The alphabet's letters can be compared to amino acids. You can create new words by combining letters in various ways. Similar principles apply to amino acids; by combining them in different ways, proteins of various types can be created.
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Which answer contains the substances known as fossil fuels?
Which answer contains the substances known as fossil fuels?
wood, oil, geothermal
oil, natural gas, coal
wind, oil, coal
natural gas, solar, coal
oil, natural gas, coal..........
Answer:
Coal, oil, and natural gas
Explanation:
Coal is a material usually found in sedimentary rock deposits where rock and dead plant and animal matter are piled up in layers.
A 28.0 g sample of nitrogen gas combines completely with 6.0 g of hydrogen gas to form ammonia. What is the mass of ammonia formed?
Taking into account the reaction stoichiometry, the mass of ammonia formed is 34 grams.
Reaction stoichiometryIn first place, the balanced reaction is:
N₂ + 3 H₂ → 2 NH₃
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
N₂: 1 moleH₂: 3 molesNH₃: 2 molesThe molar mass of the compounds is:
N₂: 28 g/moleH₂: 2 g/moleNH₃: 17 g/moleThen, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
N₂: 1 mole ×28 g/mole= 28 gramsH₂: 3 moles ×2 g/mole= 6 gramsNH₃: 2 moles ×17 g/mole= 34 gramsMass of ammonia formedIn this case, by reaction stoichiometry, a 28.0 g sample of nitrogen gas combines completely with 6.0 g of hydrogen gas. So, the mass of ammonia formed is 34 grams.
In summary, by reaction stoichiometry, the mass of ammonia formed is 34 grams.
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will mark brainliest if correct
What does it mean when two solid objects take up different spaces? (2 points)
Group of answer choices
They have different masses.
They have different volumes.
They have different temperatures.
They have different weights.
Answer:
THEY HAVE DIFFERENT VOLUMES
Answer:
They have different volumes
They have different masses
Explanation:
A compound that occupies a receptor but does not activate the neuron is known as a(n)?
A compound that binds to a receptor but does not activate the neuron is known as an Antagonist.
A receptor is a large protein molecule on a neuron that gets activated when a ligand binds to it such as a drug or hormone, or when electrical impulses pass through it.
An antagonist is a drug or hormone that binds to receptor, but instead of activating the receptor, it blocks or dampens the activation of the neuron. Antagonist drugs are used to interfere with the normal function or operation of a protein receptor.
Depending on the nature of the antagonist or the receptor it's bound to, the effects of antagonists may be permanent or temporary.
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Which molecule in each pair has the greater dipole moment? give the reason for your choice. a) so2 or so3
SO2 has a larger dipole moment than SO3 molecule in each pair has the greater dipole moment
Dipole moment (μ) measures the net molecular polarity, which is the product of charge Q and the distance r between the charges μ=Q×r thus, the larger the difference in electronegativities of bonded atoms, the larger the dipole moment. the SO3 molecule has zero dipole moment SO3 (sulfur trioxide) molecule has the highly symmetrical trigonal planar geometry and each one of the individual S-O bond in the species is equally polar. trigonal planar with each O double bonded to S. so no dipole moment inSO3.
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Banded iron formations are made of the minerals ______ and ______.
Banded iron formations are made of minerals like iron-rich silicates and iron-rich carbonates.
What is banded iron?
Banded iron is the sedimentary rocks that are formed by the iron-rich contents and iron-rich carbonates and silicates. These minerals are hematite and magnetite.
The organisms that release oxygen are converted into iron oxides underwater, and they form sedimentary rocks like banded iron. The oxides are composed on the ocean floor, and they turn into rocks.
Thus, the correct minerals for banded iron formation are iron-rich silicates and iron-rich carbonates.
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A. Graph the following information in a BAR graph. Label and number the x and y-axis appropriately.
y
Month
Sept
Oct
Nov
Dec
Jan
Feb
# of deer
38
32
26
20
15
12
X
The quantity of deer is a dependent variable, whereas time is an independent variable.
Independent variable is the variable whose value doesn't depend on other variable.The independent variable is time(months)The dependent variable is number of deer.The appropriate title is variations in deer population in given time period.A variable is said to be independent if it does not depend on any other variable to determine its value. A variable is said to be independent if it does not depend on any other variable to determine its value. A variable that indicates a quantity being altered in an experiment is known as an independent variable. A quantity whose value depends on such modifications is referred to as a dependent variable. The independent variables in the context of a function are the function's inputs, while the dependent variables are the function's outputs.To learn more about dependent and independent variables visit:
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A student in chm 11500 lab measured the mass of a 250-ml erlenmeyer flask and recorded it as 79. 83 g. She added 10. 00 ml of deionized water from a 25-ml buret to the flask. The mass of the flask plus the water was 89. 82 g. The temperature of the water was 22 °c. What is the calculated volume of the water that the student measured?.
An Erlenmeyer flask is also termed as conical flask and titration flask. Invented in the year 1860. It is made up of glass and plastic. Inventer - Emil Erlenmeyer
Weight of empty erlenmeyel flask = 79.83 g
Weight after addition of water = 89.82 g
Weight of water = 89.82 - 79.83 = 9.99 g
Density of water at 22 deg celcius = 0.99777
Density = mass / volume
Volume = mass / density
= 9.99 g / 0.99777 g/ ml
= 10.01 ml
Calculated volume of water that the student measured is 10.01 ml.
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Hydrogen and helium, the two main constituents of the sun, are both ______ elements.
The two main constituents of the sun, are both lightweight elements.
What is constituents of the sun?Helium and hydrogen make up the majority of the sun's mass (He). The sun is made up of 92.1% hydrogen and 7.9% helium by mass. Less than 0.1 percent of the mass of the sun is made up of different metals. The surface of the sun is around 10,340 degrees Fahrenheit hot (5,726 degrees Celsius).
The majority of the sun's emissions come from particles like neutrinos that travel beyond the light the sun's surface emits and can't be seen with ordinary spectroscopic instruments. As a result, to identify these particles, specialised equipment were needed, such as the Super Kamiokande (Kamioka Observatory, Japan), which has incredibly sensitive light sensors. These particles provided evidence that nuclear fusion processes were taking place in the Sun's core, which is what caused their emission.
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Convert each of the measurements given to the new unit stated using the factor label method (dimensional analysis). show all work including rewriting the given.
two step conversions:
26 cm to ft. ______________
16 lb to g ______________
1 yr to s ______________
3.5 mi to km ______________
The conversion of each of the measurements given to the new unit stated using the factor label method is as follows:
26 cm to ft:1 Foot = 30.48 cm.
∴ 26 cm = 26/30.48 = 0.853 foot.
16 lb to g:1lb = 453.59 g.
16 lb = 453.59 × 16 = 7257.48 g.
1 yr to s:1 year = 365 days; 1 day = 24 hours; 1 hour = 60 minutes; 1 minute = 60 sec.
1 year = 365 × 24× 60× 60 = 31,536,000 seconds.
3.5 mi to km:1 mile = 1.60 km.
3.5 mile = 3.5 × 1.60 = 5.63 km.
What is the Factor label method?The factor label method may be defined as a type of technique that is significantly utilized in order to convert one unit of measurement into the other with the utilization of the conversion factor.
Therefore, the conversion of each of the measurements given to the new unit stated using the factor label method is well-described above.
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A certain sample of liquid has a mass of 42 grams and a volume of 35 centimeters. What is the density of the liquid?
A certain sample of liquid has a mass of 42 grams and a volume of 35 centimeters. The density of the liquid is 1.2 g.cm⁻³
How can I determine a liquid's density?You follow the same procedures you would for a solid to determine the density of a liquid. Divide the mass of the fluid by its volume after computing its volume and weight. Weigh the substance inside the container, then pour it out and weigh the resulting empty vessel. The weight of the empty container is subtracted from the weight of the filled container to determine the fluid's mass.
Calculation of the above problemMass = 42gms
Volume = 35 cm³
Formula Used:
Density = Mass ÷ Volume
Putting values,
Density = 42 g ÷ 35 cm³
Density = 1.2 g.cm⁻³
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Mobile water supply operations, such as water shuttles or relay pumping, must be performed:_____.
Mobile water supply operations, such as water shuttles or relay pumping, must be performed In rural areas without public water distribution systems
A distribution systems includes all of the centers and devices connecting a transmission device to the customer's device. A traditional distribution device can consist of: Substations. Distribution Feeder Circuits. Switches.
Distribution systems, additionally referred to as dispensed computing, is a device with more than one additive placed on extraordinary machines that speak and coordinate movements so that it will seem like an unmarried coherent device to the end-user.
A dispensed device is computing surrounding wherein diverse additives unfold throughout more than one computer (or different computing gadgets) on a network. These gadgets cut up the work, coordinating their efforts to finish the task extra effectively than if an unmarried tool were accountable for the task.
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How do you prepare 40 ml of a 2 mg/ml protein solution from 10 mg/ml protein solution?
To dilute the concentrated protein solution to make 40mL of a 2mg/mL solution, take 8mL of the concentrated stock and add 32mL of solvent.
What is concentrated protein?Unattached or attached to an atom, an electron is a negatively charged subatomic particle (not bound). One of the three main types of particles inside an atom, along with protons and neutrons, is an electron that is linked to the atom.
An atom's nucleus is made up of electrons, protons, and neutrons. The positive charge of a proton balances out the negative charge of an electron. An atom is in a neutral state if its protons and electrons are equal in number.
They have a mass that is considerably lower, exist outside of the nucleus, and display both wave- and particle-like properties. Since an electron is also a fundamental particle, it is unreinforced and unbroken.
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When the concentration of a substance differs from one area to another, this creates a concentration.
The difference in the concentration of a substance between two areas is called the concentration gradient. When a region has a higher particle concentration than another, this is known as a concentration gradient. A concentration gradient will cause particles in passive transport to diffuse down it from higher concentration to lower concentration until they are evenly spaced.
The gradual separation of a region of high density from a region of low density in a solution in terms of the concentration of a dissolved material. Understanding how ions and particles flow randomly in a solution or gas depends on the concentration gradient.
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Both of the sulfur-chlorine single bonds in scl2 are polar. in which direction should the polarity arrows point?
The polarity arrow should point away from the central sulphur atom.
A polarity arrow indicates the direction of the atom with the greater electronegativity.
Electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.
An electron configuration of sulfur atom: ₁₆S 1s²2s²2p⁶3s²3p⁴
An electron configuration of chlorine atom: ₁₇Cl 1s² 2s² 2p⁶ 3s² 3p⁵
In the molecule SCl₂, a chlorine (λ=3) is more polar than a sulfur (λ=1.8).
An arrow points from sulfur (S) toward chlorine (Cl), since it has a greater electronegativity than sulphur (see the picture below).
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Assuming a density of 1.00 g/ml what is the total mass of the solution (water) in the calorimeter?
If we assume the density of water is 1.00 g/mL, the mass of water is 250 g
To find mass here density is given so we use density formula density=mass/volume
The volume of water is given but not the mass. Hence volume is converted into mass by using the density of water, which 1.0 g /ml. Therefore, Mass of water = 250 ml x 1.0 g/ml = 250 g
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A unknown compound was found to have the molecular formula c5h12o2 . to which compound classes could the compound belong? check all the apply. the possible functional groups are:
The compound classes are alcohol (hydroxyl group) and ether (ether group).
A unknown compound was found to have the molecular formula C₅H₁₂O₂.
Degree of unsaturation = (2C + 2 + N - X - H) / 2
Degree of unsaturation = (2 × 5 + 2 + 0 - 0 - 1) / 2
Degree of unsaturation = 0
C = number of carbon
H = number of hydrogen
N = number of nitrogen
X = number of halogen
The degree of unsaturation is 0, a unknow compound has only single bond.
Alcohols and ethers have single bonds and oxygen in their structure.
In the pictures below, there are examples of alcohol with two hydroxyl group (-OH) and ether with two ether groups.
It cannot be carboxylic acid, because acid has double bon.
It cannot be phenol, because it must have minimum six carbon atoms.
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Explain the technique for measuring the freezing point of a solution. why is salt added to the ice?
Technique that are used to measure the freezing point of a solution is the osmometer it uses the solution's freezing point depression to put up its brawn. It is used to manage the level of osmotically felicitous body fluid in a lot of chemicals mixed in the blood operate the relationship which a mole of mixed substance lessen the freezing point of water(H2O) by 1.86 °C (35.35 °F).
The Rast method is also there.
Beckmann thermometer
When added to ice, salt first bring to an end in the film of liquid water that is always near by on the surface, thereby clouded its freezing point below the ices temperature. Ice in contiguity with salty water therefore melts, produce more liquid water, which mixed more salt, thereby lead to more ice to melt, and so on.
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A 10 mg mosquito-sized insect needs a mere millimeter of total foot edge to be supported by surface tension. how about a 60 kg man?
A 60 kg man would need a 8000 meters of total foot edge to be supported by surface tension.
Many insects can walk on the water, because of the surface tension at the water surface.
Surface water molecules attract more strongly to the water molecules around them and create a high surface tension with smaller surface area of a water.
The water molecules at the surface do not have other water molecules to form hydrogen bonds, only below and to either sides, like other water molecules that hydrogen bond with other water molecules on all sides.
The surface tension at the water surface is not strong enough to support man on the water.
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chelsea went ice-skating. the ice, her skates, the zamboni, and the rink building itself were all examples of solids she encountered. she developed a model of the particles in the ice. which of these statements about the particles present in her model of a solid are true? choose the three statements that apply.
The three statements about a model of the particles in the ice:
They vibrate in place.
They are packed very closely together.
They cause the solid to have definite volume and definite shape.
For example, chemical compound water (H₂O) is liquid. Molecules of water are not rigid as in solid state (ice) and can move. In solid state (in this example ice) movement of molecules is more slow than movement of molecules in liquids (for example water).
Solids have fixed shapes and volumes because particles occupy a fixed position in the crystal lattice.
Strong cohesive forces keep particles (molecules, atoms, or ions) in place, with little void spaces, resulting in very low compressibility and thermal expansion.
Solids have high density that varies very little with temperature.
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Have you ever tried eating delicious delicacies served in your school canteen during recess time? Have you ever thought of how these foods were prepared in such a way that various ingredients were mixed to make it delicious and healthy? The combination of several components or elements produce a useful end product that can be utilized and consumed for our advantage.
Yes, I have tried eating delicious delicacies served in the school canteen during recess time.
The food that is served in the school canteen is either cooked or in raw form.For example, I ate a vegetable sandwich and a banana smoothie for lunch. Cucumber and tomato are the sandwich's ingredients. We had bread, butter, salt, cheese, and cabbage. Bananas, milk, and sugar are all components of the banana milkshake. the cucumber has vitamin C. While tomatoes also contain vitamin C, cheese has lipids, and Banana has carbohydrates and these all components are good for health.Energy is what carbs are mostly used for, but they also aid to control blood sugar levels. While proteins are the building blocks of the body, stable lipids primarily aid in the storage of energy and the communication of information to cell membranes.The combination of these components in food produces different end products like vitamins, minerals, and many other nutrients which are beneficial for a healthy body.
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based on the information above and periodic trends, which of the following is the best hypothesis regarding the oxide(s) formed by rb?
The best hypothesis regarding the oxide(s) formed by Rb: Rb will form only Rb₂O, Rb₂O₂ and RbO₂.
Rubidium electron configuration:
₃₇Rb 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶5s¹; one valence electron is 5s¹ orbital.
Alkaline metals (group 1), in this example rubidium, have lowest ionizations energy and easy remove valence electrons (one electron), they are most reactive metals.
Alkaline metals have oxidation number +1.
The alkaline metals react with oxygen to form different oxides.
Rubidium like other alkaline metals, form oxide, peroxide and superoxide.
Rb₂O is rubidium oxide, it is a yellow solid
Rb₂O₂ is rubidium peroxide, it is produced when rubidium stands in air
RbO₂ is rubidium superoxide, it is a black solid
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When salt dissolves completely into water, which term is used to describe the water?
1. solute
2. solution
4. concentration
4. solvent
Water is called Solvent ,When salt dissolves completely into water.
What is solvent?Solvents are substances, usually liquids, that help other substances dissolve and mix together to form solutions. Nonpolar solvents, such as hydrocarbons, do not support ion production; polar solvents do (for example, water). Acidic, basic, amphoteric (both), or aprotic solvents are the four most common types (neither).
Alcohols, esters, ethers, ketones, amines, nitrated and halogenated hydrocarbons are a few examples of organic substances that are utilized as solvents, along with other hydrocarbons and aromatic compounds. Their main applications are in inks, paints, varnishes, lacquers, extractive processes, industrial cleansers, medicines, and media for chemical synthesis.
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Answer: solvent
Explanation:
Why do you think the mass was lost when the reaction was done in the normal setup but stayed the same when the reaction was done in the gas collection setup?
The mass was lost when the reaction was done in the normal setup but stayed the same when the reaction was done in the gas collection setup because of the law of conservation of mass.
The law of conservation of mass states that -
Mass can neither be created nor destroyed or lost, in any reaction. It remains constant in a system.
So, the mass lost in surrounding was neither got considered nor got calculated when the reaction setup was done in normal way. But when the reaction was done in a closed setup where after the reaction, the gas was collected, the mass was changed. It proved the postulate stated by the law of conservation of mass and energy.
Therefore, it is explained by the law of conservation of mass.
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Explain hydrogen bonding. how many hydrogen bonds can a single water molecule form
Hydrogen bonding is a unique type of dipole-dipole enchantment among molecules, now not a covalent bond to a hydrogen atom. It results from the attractive pressure between a hydrogen atom covalently bonded to a very electronegative atom consisting of a N, O, or F atom and some other very electronegative atom.
A single water molecule can form 4 Hydrogen Bonds.
A hydrogen atom this is linked to a exceptionally electronegative atom and some other relatively electronegative atom that is nearby engage with each other to form hydrogen bonds, which are an unique kind of attractive intermolecular interactions. This system is known as hydrogen bonding. Hydrogen, as an example, is covalently related to the more electronegative oxygen atom in water molecules (H2O).
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