Help please !!



Fast!!

Help Please !!Fast!!

Answers

Answer 1

Step 1 convert lbs to kg step 2 kg to g 3rd step g to mg

Here given data is 0.47 pound then we have to convert how many miligram = ?

So here 0.47 pound (lbs) = 0.2131 kg

1 kg = how many gram then 1kg = 1000 gram

So, 0.2131 kg = 213.1 gram

So 1 gram = 1000 mg then  

So, 213.1 gram = 0.2131 mg

Then here three conversion are seen means step 1 =0.47 pound (lbs) = 0.2131 kg to step 2 = 2131 kg = 213.1 gram to step 3 = 213.1 gram = 0.2131 mg

This is the conversion from beginning to ending

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Related Questions

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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.

Answers

Answer:

THEY HAVE DIFFERENT VOLUMES

Answer:

They have different volumes

They have different masses

Explanation:

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?.

Answers

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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If each oxygen atom represents 0.050 mol, how many molecules of dichlorine monoxide were present before the decomposition?

Answers

0.6 moles molecules of dichlorine monoxide were present before the decomposition.

Balanced chemical equation for reaction of gaseous dichlorine monoxide decomposes to chlorine and oxygen gases:

2Cl₂O → 2Cl₂ + O₂

n(O) = 12 × 0.050 mol

n(O) = 0.6 mol; number of oxygen atoms

n(O) : n(O₂); ratio of oxygen atoms to oxygen molecules (see the picture below)

n(O₂) = 0.6 ÷ 2

n(O₂) = 0.3 mol; amount of oxygen molecules

n(O₂) : n(Cl₂O) = 1 : 2; from balanced equation

n(Cl₂O) = 2 × 0.3 mol

n(Cl₂O) = 0.6 mol; amount of dichlorine monoxide

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The potential energy stored in high-energy bonds is commonly harnessed when the bonds are split by the addition of _______________ in a process called _____________.

Answers

The potential energy stored in high-energy bonds is commonly harnessed when the bonds are split by the addition of water in a process called hydrolysis.

Hydrolysis of high-energy compound (ATP) using water:

ATP + H2O → ADP + Pi

ATP is short for adenosine triphosphate.

Adenosine triphosphate converts to either the adenosine diphosphate (ADP) or adenosine monophosphate (AMP), in this process energy is released.

ATP is made of three components: the triphosphate, the sugar ribose and a nitrogenous base (adenine).

In cellular respiration where organic matter is transformed into carbon dioxide and energy is released for production of ATP.

Glucose and oxygen are reactants and carbon dioxide, water and energy are products of this chemical reaction; cellular respiration creates an energy molecule (ATP) when glucose is broken down.

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In which direction does heat flow? a. down b. up c. from a cold substance to a cold substance d. from a warm substance to a cold substance

Answers

The heat will flow from a warm substance to a cold substance.

The movement of heat from a hotter object to a chillier one – when two resources at exclusive temperatures are blended together, warmth flows from the warmer physique to the cooler body until they attain the equal temperature (Zeroth Law of Thermodynamics – Thermal Equilibrium)

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The sequence of amino acid residues in a protein is considered _____ structure and is always read from the _____-terminal end of the protein.

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The sequence of amino acid residues in a protein is considered primary structure and is always read from the N-terminal end of protein.

The food we eat chiefly consists of three nutrients namely carbohydrates, proteins and fats.

Proteins are the most abundant among the bio molecules present in the living organisms.

The word protein is derived from Greek word, “proteios” which means primary or of prime importance.

The proteins are the polymers of amino acids.

The structure of amino acid consists of a carbon atom surrounded by four functional groups i.e, Carboxyl(COOH) group, the Amino(NH2) group, hydrogen(H) and an alkyl group(R).

In a protein, amino acids are linked to each other by peptide bonds which are formed between the COOH group of one amino acid and the NH2 group of another amino acid, as shown in the adjoining image.

In primary structure, the amino acids are joined to each other in a linear manner without any branching, as shown in the given diagram.

Hence, the sequence of amino acid residues in a protein is considered primary structure and is always read from the N-terminal end of protein.

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Because ___ occurs without oxygen scientist believe this stage in cellular respiration evolved first

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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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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?

Answers

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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what are two ways that cmpounds ar differnent from the elements that form them

Answers

Answer: A compound contains atoms of different elements chemically combined together in a fixed ratio. An element is a pure chemical substance made of same type of atom. Compounds contain different elements in a fixed ratio arranged in a defined manner through chemical bonds. They contain only one type of molecule.

Explanation:

What orbitals overlap to form the c-h bond in ethene (h2c=ch2)?
a. s-sp
b. s-sp3
c. p-p
d. s-sp2
e. s-p

Answers

The orbitals that overlap to form the c-h bond in ethene (h2c=ch2) is  s-sp2. The correct option is d.

What are orbitals?

Orbitals are wave functions that are the places where the electrons can be found. There are different orbitals present. These are s, p, d, and f. Orbitals are of different shapes. Round orbital and eight-like shapes.

Each carbon atom is joined to two hydrogen atoms in the ethylene molecule. Therefore, for the C-H sigma bonds in ethylene, overlap two sp2-hybridized orbitals with the 1s orbitals of two hydrogen atoms.

Thus, the correct option is d. s-sp2.

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Two+isotopes+of+rubidium+occur+naturally,+rubidium+85+(84.91+amu)+at+72.17%+and+rubidium-87+(86.91+amu)+at+27.83%.+what+is+the+atomic+mass+of+rubidium?

Answers

Two isotopes of rubidium occur naturally, rubidium 85 (84.91 amu) at 72.17 % and rubidium 87 (86.91 amu) at 27.83 %. The atomic mass of rubidium is 85.468 μ.

To find the atomic mas of rubidium -

Determining the average atomic mass of an element, we take the average weight of the atomic masses of the naturally occurring isotopes. This means that all the isotopes together are calculated by multiplying the atomic mass and the percentage of abundance. So we have a sum of all the different isotopes ( which is 100 % of abundance)

For naturally occurring rubidium, there are 2 isotopes.

mass of Rb-85 x abundance + mass of Rb-87 x abundance -

84.9118 x 0.7217 + 86.9092 x 0.2783 = 85.46767642 = 85.468 μ

On the periodic table, we can see for Rubidium

85.468 μ which is the average atomic mass of Rubidium and also for its two naturally occurring isotopes.

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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

Answers

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.

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Consider these statements about an element E in group 5A

Answers

question one is yes
question two is "X" (the symbol)

In atom has 11 protons, 12 neutrons, and 10 electrons. this atom has an atomic number of ______, an atomic mass of ________, and an overall charge of ______.

Answers

In atom has 11 protons, 12 neutrons, and 10 electrons. this atom has an atomic number of 11 , an atomic mass of 23 , and an overall charge of +1 .

What is electron?

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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Contrast mass, volume, and density.

Plss need help asap

Answers

The density is the ratio of  the mass to the volume.

What is density?

The term density refers to the ratio of mass to the volume of a substance. Given that mass is the quantity of matter in a body, we could use it to obtain the density of the body.

We know that solids have a definite volume, liquids have a definite volume but a gas does not have a definite volume. The volume of a gas is the same as the volume of the container where it is kept. This is why gases could be compressed but a solid and a liquid can not be compressed likewise.

The volume tells us how much space that an object expects to occupy. We have to combine the mass and the volume to get the density of an object. As such, we can see that the density is the ratio of  the mass to the volume.

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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

Answers

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.

an increase in pressure increasing the billing point is an example of a-

Answers

An increase in pressure increasing the billing point is an example of a physical property.

The term "boiling point" describes the temperature at which a liquid, which is being boiled, changes from a liquid to a vapor when its pressure equals that of its environment.Physical changes are those that take place when a material's structure is the same both before and after the change.When a substance is changed into another chemical substance, this is known as chemical transformation.When describing the state of a physical system, a substance's physical qualities are those that can be measured.A substance's characteristic that is seen in a chemical reaction is referred to as a chemical property.

As it demonstrates the physical state, the increase in pressure with boiling point is an example of a physical property.

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The complete question is:

An increase in pressure increasing the boiling point of a liquid is an example of a —

A physical change

B chemical change

C physical property

D chemical property

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When light waves change direction as they travel from one material to another ________ occurs.


A. Refraction

B. Eclectromagnetic

C. Wavelength

D. Reflect

E. Translucent

Answers

Answer:

A. Refraction

Explanation:

Refraction is the redirection of a wave as it passes from one medium to another.

In recent years the number of buildings with solar panels has greatly interested. Solar panels reduce the amount of carbon dioxide released in the atmosphere ​

Answers

The carbon footprint of a solar panel is around 20 times lower than that of a coal-powered electrical source. As a result, as soon as you install solar power in your home, your carbon footprint will go down.

As we work to make the planet greener, solar carbon footprints are a hot topic in the field of renewable energy. Even if solar energy reduces carbon emissions in thousands of homes every day, the manufacture of solar panels can have a sizable impact on the environment.

In this article, the carbon footprints of solar panels and the amount of CO2 saved by solar energy will be compared. solar emissions and their alternatives, solar footprints, and some modern approaches to reducing carbon footprints.

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A solar panel's carbon footprint is around 20 times smaller than that of a coal-powered electricity source.

Installing solar panels is an excellent strategy to reduce your carbon impact. Solar energy is a natural, renewable source since it can be renewed instead of finite fossil fuels. When solar energy is turned into electricity, it emits little or no pollution.Solar panels, like any produced product, have a carbon footprint. The good news is that the industry has been hard at work to reduce this as much as possible, perfecting everything from materials to manufacturing. Solar panels' efficiency has grown over the previous decade, and solar photovoltaics (PV) has had the steepest cost decrease of any power technology. A 4kW solar PV system cost around £20,000 in 2010.

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Which is the most complete charge balance expression for a saturated solution of cac2o4?

Answers

The most complete charge balance expression for a saturated solution of CaC₂O₄ is [Ca²⁺] = [C₂O₄²⁻]

Saturated solution is a solution that has dissolved as much solute as it is capable of dissolving. CaC₂O₄ is named as Calcium oxalate it is colourless solution. complete charge balance expression for a saturated solution of CaC₂O₄ are as follow:

CaC₂O₄ → 1Ca²⁺ + 1C₂O₄²⁻

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If the dissolution of borax in water is spontaneous, is the change in enthalpy positive or negative - or are both signs possible? choose... why do you predict this? choose... choose... .

Answers

If the dissolution of borax in water is spontaneous, the change in enthalpy will be both positive and negative. It can be predicted by the sign of the enthalpy change depending on the temperature.

What is borax?

Borax is a hydrated borate of sodium. It is a salt. When borax is mixed in water, it is converted into boric acid and the pH will be 9.13.

Enthalpy is a total heat energy present in a closed system, also called a thermodynamic system.

Thus, the change in enthalpy will be of both signs. Predicted by the sign of the change in temperature.

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Why does a smaller atomic radius lead to higher electronegativity.Please explain conceptually

Answers

The electrons are more closely linked the closer they are to the nucleus, enhancing the atom's electronegativity.

The ability of an atom to polarise electron density in its own direction is measured by electronegativity. As a result, it is USUALLY a function of the nuclear charge's symbol, atomic number Z. The most electronegative elements are fluorine and oxygen, which are located to the right of the Periodic Table.

These elements have smaller atomic radii and greater electronegativity due to their higher atomic numbers. The distribution of electrons around an atom's nucleus determines its size, so it makes sense that there would be a link between electronegativity and radius. The electrons are more closely linked the closer they are to the nucleus, enhancing the atom's electronegativity.

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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?​

Answers

Taking into account the reaction stoichiometry, the mass of ammonia formed is 34 grams.

Reaction stoichiometry

In 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 moles

The molar mass of the compounds is:

N₂: 28 g/moleH₂: 2 g/moleNH₃: 17 g/mole

Then, 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 grams

Mass of ammonia formed

In 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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What was collected in the sample for chemical analysis? what was concluded from the results of this experiment?

Answers

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 does density measure?​ on flocabulary
A
how much liquid is in an object.

B
the amount of space an object takes up.

C
how tightly packed an object’s particles are.

D
the amount of matter contained in an object.

Answers

Hello!

Density measures... (c) how tightly packed an object's particles are.

Hope this helps!

C how tightly packed an objects particles are

Banded iron formations are made of the minerals ______ and ______.

Answers

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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Is the emission spectrum of elements composed of individually colored lines or is it a continuous blend of colors like a rainbow?

Answers

The emission spectrum of elements is composed of individually colored lines.

When energy is provided to an element, the electrons present in it get excited and move to a higher energy level.

When these electrons return to their ground state, they release energy in the form of colored bands known as a spectrum(plural; spectra).

The spectrum emitted by a substance that has absorbed energy is known as the emission spectrum.

To produce an emission spectrum, energy is supplied to a sample by heating it or irradiating it.

The study of spectra is known as spectroscopy which helps in the identification and characterization of elements.

The emission spectrum of atoms does not have a continuous blend of colors like a rainbow.

Thus, the emission spectrum of elements is composed of individually colored lines.

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How many ionized amino groups will be found in the tripeptide ser-ala-lys at ph 7?

Answers

The four amino acids can come together in any way. 34 x 81 = 81 different combinations are conceivable.

What is ionized amino ?

Aspartic acid and glutamic acid are the two examples where the side chain further contains a carboxylic acid group to the one adjacent to the amino group. When the pH is close to neutral (pH 7), these groups get ionised and manifest themselves as the carboxylate anion.

The concentration of H+ ions and acid strength increase in direct proportion to the degree of dissociation (or ionisation). As a result, the degree of an acid's dissociation or ionisation is directly related to the acidity of the acid (stronger acids have lower pH values).

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Assuming a density of 1.00 g/ml what is the total mass of the solution (water) in the calorimeter?

Answers

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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Mobile water supply operations, such as water shuttles or relay pumping, must be performed:_____.

Answers

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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