The mass of liquid mercury that can fill glass tube is 680.365 gm.
We know that ,
Volume of cylinder = π[tex]r^{2} h[/tex]
where r is the radius of cylinder and h is the height
Here diameter of glass tube is 16mm
Thus the radius r = 8 mm
= 0.8 cm
Volume of glass tube = π [tex]0.8^{2}[/tex][tex]*25[/tex] [tex]cm^{3}[/tex]
Density of mercury given is [tex]13.53gm/cm^{3}[/tex]
We know that
Density = Mass / Volume
∴ [tex]13.53gm/cm^{3}[/tex] = Mass/ π[tex]0.8*0.8 * 25[/tex]
Mass = 13.53 *π0.8*0.8*25
= 680.36 gm
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The revival of jansenism, which centered on miracles that allegedly happened at the grave of a jansenist priest, is evidence of what development within french catholicism?
The evidence of the revival of Jansenism is the desire of ordinary people to connect themselves to what they saw as the direct work of God.
What is Jansenism?Jansenism is a theological movement that is done with the mixing of Catholicism. It was active in France's kingdom.
Primarily throughout the seventeenth and eighteenth centuries, Jansenism flourished inside Roman Catholicism before being denounced as heresy in 1653 by Pope Innocent X.
Thus, the yearning of common people to participate in what they perceived as God's direct action is proof of the rebirth of Jansenism.
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Hi, i am almost done with my assignment, 2.11 Unit test chemistry of life, could i get help from someone who knows this type of questions? would get 5 stars and a few extra points well
A Scientist test a small section of a carrot root to determine the type of molecules were present. the results showed that the molecule contained carbon , hydrogen , and oxygen . the option d is correct (d) both (a) and (c)
(a)the molecule are a type of carbohydrate (c) the carrot contains some type of sugar.
Carrot is one of the important root vegetable rich in bioactive compounds. carbohydrates are made up of carbon , hydrogen and oxygen. carbohydrates are sugar molecules. The main three carbohydrates : sugar , starches and fiber. The carrot vegetable we eat is the taproot of carrot plant. The sucrose is major transport and storage sugar but it convert into starch. Carbohydrates provides energy for living things.
Thus, A Scientist test a small section of a carrot root to determine the type of molecules were present. the results showed that the molecule contained carbon , hydrogen , and oxygen . the option d is correct (d) both (a) and( c)
(a)the molecule are a type of carbohydrate
(c) the carrot contains some type of sugar.
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You probably use the term heat many times a day. As an example, when you cook, dinner, you heat your dinner on a hot stove. When you place a piece of cool metal in the sun, it is heated by the sun’s energy. Why is heat the correct term to use in these examples?
When you place a piece of cool metal in the sun, it is heated by the sun’s energy they show that heat flows from warmer to cooler
In the given example conduction concept are seen conduction means conduction is the transfer of heat energy from one substance to another or within a substance in which heat is transferred via conduction and when heat energy is converted through piece of metal then the substance itself does not flow and heat is transferred internally, by vibrations of atoms and molecules and electrons can also carry heat, which is the reason metals are generally very good conductors of heat
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When a sugar crystal is placed in water, every time a sucrose molecule dissociates from the crystal, water molecules surround it in a cloud forming a(n):______.
A sugar crystal is placed in water, every time a sucrose molecule dissociates from the crystal, water molecules surround it in a cloud forming a hydration shell.
What is a hydration shell?
The term "hydration shell" refers to a more or less continuous cluster of water molecules that surround and are somewhat linked to another substance that the water molecules are drawn to because it is hydrophilic, or water loving.
Since there is space between matter particles and sugar crystals, the level of water does not significantly rise when sugar crystals dissolve in it, keeping the water level constant.
Thus, every time a sucrose molecule separates from a sugar crystal in water, a cloud of water molecules forms around the crystal, creating a hydration shell.
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What term refers to exercise that primarily uses the oxygen-dependent energy system, oxidative phosphorylation?
Aerobic refers to exercise that primarily uses the oxygen-dependent energy system, oxidative phosphorylation.
Aerobic Respiration is the method of cellular respiration that takes place in the presence of oxygen gasoline to produce electricity from food. This type of breathing is frequent in most of the plant life and animals, birds, humans, and different mammals. In this process, water and carbon dioxide are produced as quit products.
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a covalent bond involves: a. transferring of b. sharing protons c. transferring protons d. sharing electrons
A covalent bond involves: d. sharing electrons
The atoms of a molecule are held together by electrical forces that hold the atoms together, this is due to the electrical attraction between the electrons of the atom of one element and the nucleus of the other atom, this force of attraction is called covalent bond.
A covalent bond involves the sharing of electrons that are in the last energy layer of the atoms because they are the most likely or willing to be shared.
An example of a covalent bond is the bond between a hydrogen atom and a carbon atom in methane.
What is an atom?The atom is the smallest part of the composition of matter, it is indivisible and is composed of a nucleus that has protons and neutrons, and around the nucleus there are the electrons.
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Breaking a(n) _____ of an element into smaller particles will change its properties -- it would no longer be that element.
The answer would be an atom.
Atom : An atom is a tiny piece of a matter that unparalleled defines a chemical element.
An atom comprise of a mid nucleus that is neighbouring by one or more negatively charged electrons. The nucleus is positively charged and consist one or more relatively bulky particles known as protons and neutrons.
It is the littlest unit of an element.
Cannot be made or annul in a chemical reaction.
Atoms of various elements have various masses and chemical attributes.
Atoms merged in the ratio of compact whole numbers to form compounds.
Characteristics of an atom : atomic number, mass number and net charge.
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Write a net ionic equation for the overall reaction that occurs when aqueous solutions of carbonic acid and potassium hydroxide are combined. assume excess base.
The net ionic equation for the overall reaction that occurs when aqueous solutions of carbonic acid and potassium hydroxide are combined is:-
H₂CO₃ + KOH ⇒ K₂CO₃ + H₂O
The reaction between an acid and base is known as a neutralization reaction.
In a neutralization reaction, an acid and a base react to produce a salt and water along with it.
Here H₂CO₃ is a weak acid and KOH is a base.
We have been given the information that the base i.e. KOH is present in excess amount.
Thus, the reaction between H₂CO₃ and KOH is as follows:
H₂CO₃ + KOH ⇒ K₂CO₃ + H₂O
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At what approximate temperature will the reaction mixture containing methyl salicylate and 30 ml of 4m sodium hydroxide boil?
At 223.3°C the solution will boil.
What is methyl salicylate?The organic substance methyl salicylate has the chemical formula C₈H₈O₃. It is salicylic acid's methyl ester. It is a clear, viscous liquid that is commonly referred to as "minty" since it is a component of mint candies. It has a sweet, fruity aroma reminiscent of root beer.
What is sodium hydroxide?Lye and caustic soda are other names for sodium hydroxide, an inorganic substance having the formula NaOH. It is a white, solid ionic substance made up of the cations sodium (Na+) and the anions hydroxide (OH).
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Fatty acids that have been chemically altered so that ____________ atoms are on opposite sides of a double bond are called ____________ fatty acids.
Fatty acids that have been chemically altered so that hydrogen atoms are on opposite sides of a double bond are called trans fatty acids.
What are fatty acids?
Fatty acids are the building blocks of fat found in both our food and our body. During digestion, the body transforms lipids into fatty acids so they may be absorbed into the bloodstream. Three fatty acid molecules are joined together to form a molecule called a triglyceride.
Saturated, monounsaturated, and polyunsaturated fatty acids are all present in dietary fats. Even while meals include all three forms of fatty acids, they are frequently grouped according to the prevalent type.
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constant temperature and the pressure upon it. Write down the relationship in terms of a (a) Proportion (b) equation (c) formula
Answer:
Proportion : The Equality of two ratios
Equation: Values of two mathematical expressions are equal.
Formula: Mathematical relationship or rule expressed in symbols.
Explanation:
Name one similarity and one difference between simple diffusion and facilitated diffusion.
The movement of particles from an area of high concentration to an area of lower concentration is known as Diffusion. There are two types of Diffusion; simple diffusion and facilitated diffusion.
Simple diffusion and facilitated diffusion have some similarities and differences.
Both simple diffusion and facilitated diffusion are passive processes and do not require energy. They both deliver transport molecules in the direction of a concentration gradient.
There are also some differences. The speed of simple diffusion is low as compared to facilitated diffusion. Simple diffusion does not require the assistance of carrier molecules but facilitated diffusion does.
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9.The density of mercury is 13.6 g/mL.
What is the mass in kilograms of a 2 L
commercial flask of mercury?
Answer:
27.2 kg
Explanation:
13.6 * 2 L of commercial flask of mercury = 27.2 kg.
Hope this helps! Have a good day! :D
The rms speed of the molecules of a gas is 200 m/s at a temperature 300 k. what is the mass of the individual molecules?
The rms speed of the molecule is 200 m/s at a temperature of 300K. Then, the mass of the individual molecule is 3.11 ×10⁻²⁵ Kg.
Given,
The rms speed of the molecule (Vrms) = 200 m/s
The temperature of the molecule (T) = 300K
We have to find the mass (M) of individual molecules.
The expression for root mean square speed measures the speed of particles in a gas is given by:-
Vrms = √3KT/M
By squaring both sides we get,
(Vrms)² = 3KT/M
(200)² = 3 × 1.33 × 10 ⁻²³ × 300 / M
Or, M = 3.105 × 10⁻²⁵ Kg
Hence, the mass of the individual molecule is 3.105 × 10⁻²⁵ Kg.
The root mean square (R.M.S) speed V of the molecules of an ideal gas is given by the expression, v=sqrt(3RTM) and v=sqrt(3KTm) where R is universal gas constant, T is the absolute (Kelvin) temperature, m is the molar mass, K is Boltzmann's constant and M is the molecular mass.
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For the following 3 experimental set-ups identify:
1. the independent variable
2. the dependent variable
3. controlled variables
4. and then write a valid hypothesis for the experiment.
The independent variable is the type of liquid and the dependent variable growth of the plants.
What is an experiment?An experiment is used to establish the relationship between causes and effect in each of the following cases, let us determine the dependent and independent variable.
1) The independent variable is the type of liquid and the dependent variable growth of the plants. The constants are the plants and the land. A valid hypothesis is; "The growth of the plants depends on the type of liquid used to water the plants"
2) The independent variable is the mode of transport and the dependent variable is the time taken to reach the market. The constant is the distance covered. A valid hypothesis is; "The time taken to arrive at the grocery store depends on the mode of transport used"
3) The independent variable is the kind of app and the dependent variable is the battery life. The constant is the phone used while the hypothesis is; "Certain apps delete the battery faster than others"
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The operations of a cell are directed by the:
What is the approximate power per area emitted by the inside wall of an oven when baking a cake in w/m2?
The approximate power per area emitted by the inside wall of an oven when baking a cake in w/m2 is 6 x 3^4.
What is power per area?Comparing the surface power density of various industrial energy sources is crucial. Geographer Vaclav Smil popularised the idea. In the pertinent literature, the phrase is sometimes abbreviated to "power density," which may cause confusion with similar or homonymous concepts.
The power obtained per square metre of Earth's surface area utilised by a particular energy system, including all supporting infrastructure, manufacturing, fuel mining (if relevant), and decommissioning, is expressed in W/m2. Due to the high power density of fossil fuels and nuclear energy, substantial amounts of electricity may be produced in very small spaces at power plants.
6 x 3^4 (for reference Humans are about 300 K)
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Notice that in the last problem you calculated the grams of oxygen needed. what would the volume of this oxygen be at stp? report your answer in liters to the nearest whole number.
The volume of oxygen required at STP is 7 L.
STP is a pressure of a hundred kPa and a temperature of 273.15 k. Or, 1 mole of any perfect gasoline occupies 22.7 L at STP.
therefore, we need to discover the range of moles of oxygen required within the reaction.
using the molar mass of water,
10.five g × 1 mole of water/ 18.02 g = 0.577 moles of water.
1: 2 is the ratio between oxygen and water in a water molecule, because of this 1 mole of oxygen produces 2 moles of water.
0.577 moles of H₂O × 1 mole O₂ / 2 moles of H₂O = zero.2885 moles O₂.
So, if 22.7 L at STP is occupied via 1 mole, then
zero.2885 × 22.7 L / 1 mole = 6.548 L
Rounded to the nearest entire wide variety, we get 7 L.
consequently, the quantity of oxygen at STP is 7L.
standard temperature and strain (STP) is described as 0oC (273.15K) and 1atm strain. The molar extent of a gasoline is the extent of 1 mole of a fuel at STP . At STP, one mole (6.02×1023 representative debris) of any gasoline occupies a volume of twenty-two.4L
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What is the total kinetic energy of all particles that make up the matter called?
The average kinetic energy of the particles in a substance is measured by its temperature. It is a typical particle's kinetic energy.
The thermal energy of an object is equal to the sum of the kinetic energies of all its constituent particles.
Thermal power
The sum of all an object's atoms and molecules' energies makes up the substance's total energy. Both the potential energy resulting from the forces between molecules and the kinetic energy of the particles resulting from the motions of molecules within the substance and of atoms within molecules make up thermal energy. The sum of the kinetic and potential energies is all that constitutes mechanical energy. Simply put, this amount is the total mechanical energy (abbreviated as TME).
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2.408 x 10²⁴ atoms of Co is how many grams?
Answer:
235.7 gm
Explanation:
58.933 gm/mole * 2.408 * 10^24 atoms / (6.022 x 10^23 atoms/mole)
= 235.7 gm
the diameter of a hydrogen atom is about 1.04 cross times 10 to the power of short dash 10 end exponent meters. a protein molecule has an overall length of 1000 times (1 cross times 10 cubed) the diameter of a hydrogen atom.
The diameter of a hydrogen atom is 1.04 × 10⁻⁷ meters.
Diameter or the atomic radius of an atom is a measure of the size of that atom. It is distance from the center of the nucleus to the outermost isolated electron of an atom.
d(H) = 1.04 × 10⁻¹⁰ m; a diameter of hydrogen atom
If a protein molecule has an overall length of 1000 times(1×10³) the diameter of a hydrogen atom, than:
d(protein) = 1.04 × 10⁻¹⁰ m × 1×10³
d(protein) = 1.04 × 10⁻⁷ m; diameter of a protein molecule
Protein is composed of amino acid linked with peptide bond.
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What word or two-word phrase best describes the shape of the formaldehyde ( ch2o ) molecule?
Trigonal planar two-word phrase best describes the shape of the formaldehyde ( ch2o ) molecule
In formaldehyde carbon has four valence electrons, so it tends to make four bonds in covalent compounds. oxygen has six valence electrons, but as it tends to accept two, it tends to make two bonds in covalent compounds. hydrogen is almost always going to make only one bond, given that it only has one valence electron. 4+2+6=12 valence electron . in formaldehyde molecule carbon is on middle and double with oxygen am=nd single bond with 1 hydrogen and single bond with 1 hydrogen this make shape of formaldehyde called trigonal planar.
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Convert the following to scientific notation.
1, 0,005 =
2. 5,050,=
3. 0,0008 =
4. 1,000 =
5. 1,000,000, =
6. 0.25 =
7. 0.025 =
8. 0.0025 =
9. 500 =
10. 5,000 =
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Gold has a density of 0.01932 kg/cm3. what volume (in cm3) would be occupied by a 22.2 g sample of gold?
The volume occupied by a 22.2 g sample of gold having a density of 0.01932 kg/cm3.
As we know that the density of a given substance is :
Density = mass/volume
Now to find the volume, reshuffle the formula:
volume = mass/ density
Now,
density = 0.01932 kg/cm3
mass = 22.2g = 0.0222 kg
Putting the values,
volume = 0.01932/0.0222
volume = 1.49 cm3
The volume is 1.49 cm3.
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Your general impression suggests that your immediate action should be to: ____.
a. call for additional help.
b. apply oxygen.
c. dress her burns.
d. apply spinal immobilization.
Your general impression suggests that your immediate action should be to call for additional help. The correct option is a.
What is immediate action?Immediate actions are the actions that are taken without taking any time. These actions are taken when there is no time to think, and you should immediately think about the actions. The emergency condition needs immediate help.
During the time of general impression, one should immediately call for additional help. Additional people will give you suggestions for the problem.
Thus, the correct option is a. call for additional help.
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Complete combustion of 2.00 g of a hydrocarbon produced 6.43 g of co2 and 2.19 g of h2o. what is the empirical formula for the hydrocarbon? insert subscripts as necessary.
Empirical formula for the hydrocarbon is C₅H₂
Moles of C=6.43CO2 x 1 mol CO₂/44 g x 1 mol C/mol CO₂=0.14 moles of C
Moles of H=2.19 H₂O x 1 mol H₂O/18 g x 2 mol H/mol H₂O=0.12moles of H
Dividing both by 0.14
1 mol C=0.8571mol H
Multiplying both by 3
5 mol C
2 mol H
Empirical formula =C₅H₂
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The ph scale ranges from ____________ at its lowest to ____________ at its highest and measures the alkalinity of a solution.
Answer:
The pH scale ranges from 0-14.
Explanation:
Zero is the most acidic measurement while six would be the least acidic of the acids, seven is a pure substance, neither acidic nor basic, eight is the least basic measurement while 14 is the most basic of the bases.
carbonic acid (h2co3) is a weak acid formed when carbon dioxide dissolves in water. what ions could be present in a carbonic acid solution?
carbonic acid (h2co3) is a weak acid formed when carbon dioxide dissolves in water. The ions present in a carbonic acid solution are H+ and HCO3–.
Carbonic acid is a weak acid with a chemical formula of H2CO3. In the presence of water, the partial dissociation of the carbonic acid occurs to produce H+ and HCO3– ions.
It is an inorganic compound also known as diprotic acid because it can form two types of salts; carbonates and bicarbonates. It is produced at industrial level as a by-product during the burning of the fossil fuels.
Carbonic acid is used to prepare carbonated water, sparkling wine. It can also be used to remove carbon dioxide from water.
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Which actions would the nurse implement when a client develops an anaphylactic reaction? select all that apply. one, some, or all responses may be correct.
The nurse would want to call a rapid response, place the patient on oxygen, and prepare for the administration of Epinephrine. This drug is the first-line treatment for anaphylactic shock, and It will increase blood pressure, decrease swelling, and dilate the airway.
“Nursing is not an easy job. It takes physical and mental stamina to survive a 14-hour shift.” If you believe, you may find yourself thriving. in the midst of activity.
There is much to learn. The exams are difficult, the schedules are complex, and the challenges pile up. All these factors can make life as a student difficult. Nursing is a highly competitive field from the moment you start the application process until you graduate.
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A concentration gradient exists in a solution when the concentration of solutes in the solution is:________
A concentration gradient exists in a solution when the concentration of solutes in the solution is the same everywhere.
The concentration gradient of a solute is the extrude in awareness in keeping with unit distance in answer. An awareness gradient is created with the aid of using diffusion among areas with one-of-a-kind concentrations of substances. Diffusion maintains till the densities of the 2 areas are equal.
A concentration gradient is a sluggish extra de withinside the awareness of a solute in the answer as a feature of distance withinside the answer. An answer essentially includes fundamental components: a solvent (an aspect that dissolves, together with water) and a solute (debris that dissolves withinside the solvent).
The distinction in the concentration of a substance from one place to other is known as an awareness gradient. An awareness gradient happens while there's an awareness distinction (interior and outside) withinside the cell. Concentration gradients are essential for molecular migration.
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