What information does the percent composition of an atom in a molecule
give?
A. The relative number of atoms one element contributes to a
molecule
B. The relative amount of mass an atom contributes to a molecule
C. The total mass that element contributes to a molecule
D. The total number of atoms of that element in a molecule

Answers

Answer 1

C.

This is basically the definition of percent composition which is how much mass a element contributes to a specific molecule.

Answer 2

Answer: B.

Explanation:

the relative amount of mass an atom contributes to a molecule


Related Questions

what is the percentage composition of water in crystallization of oxalic acid

Answers

Answer:

5.17 percentage is water

Explanation:

answer from gauth math

5. The energy diagram shown illustrates a reaction which is
an
A. exothermic reaction.
B. activated complex.
C. equilibrium reaction.
D. endothermic reaction.

Answers

Answer:

Explanation:

The answer is an exothermic reaction so A.

You work in the special effects department of a movie studio. You are currently working on a superhero movie where the hero is very strong and cannot be hurt by normal weapons such as a sword. In the next scene, the villain is going to hit the hero with a lead pipe. The hero's costume is mostly made of foam and carbon so that is it very light and easy to move around in but will crumble if hit with anything hard. For this scene, a section of the costume needs to be replaced with a different material that will only dent, not crumble, when hit with the pipe. You are on a deadline and look around the props department for ideas, what could you use?

Answers

Answer:

Aluminum or Galvanized iron

Explanation:

If the costume has to be such that the hero does not get hurt when hit by a lead rod and also is easy for the mobility then the suitable option for the costume could be Aluminum material which will only dent and not crumble.

Galvanized iron could be another choice being harder and stronger as compared to aluminum but a little heavy. It can sustain heavy impacts as compared to aluminum.

Answer:

You could use a shield if you are not speaking from a scientific way.

Which of the following is an example of a solution?

A. An iron alloy
B. Iron metal
C. Iron rust
D. An iron ore

Answers

Answer:

A: an iron alloy.

Explanation:

Because iron alloy consists of minor components that are distributed within the major component, which is the basic requirement for a solution.

Which of the following elements is the smallest?

Answers

Explanation:

where is options?????????????????

Helium is a chemical element with the symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Its boiling point is the lowest among all the elements. Wikipedia
Symbol: He
Atomic mass: 4.002602 u
Atomic number: 2
Electron configuration: 1s2
Electrons per shell: 2
Boiling point: -268.9 °C

Specific heat capacity is _____.


greater for metal than for wood

the amount of heat required to raise the temperature of 1g of a substance 1 oC

represented by the symbol, Q

all of these

Answers

Answer:

all of this

Explanation:

What is the oxidation state of fluorine (F)?
The Periodic Table
A.-2
B. +1
C. -1
D. +2

Answers

Answer:

It is C. -1

Explanation:

[tex] { \underline{ \sf{ \blue{christ \: † \: alone}}}}[/tex]

In the figure a cyclist moves A to B and then to C.he could also go through the shortest path AC. Depending on this fact solve the following questions: Find the length of AC .Find the displacement and total distance covered.​

Answers

Answer:

hope it helps you see the attachment for further information

The world is made up of ​

Answers

Answer:

Explanation:

           The world is made up of ​living beings .    

High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to
purify chemical substances. The pressures used in this procedure range from around 500
kilopascals (500,000 Pa) to about 60,000 kPa (60,000,000 Pa). It is often convenient to know
the pressure in torr. If an HPLC procedure is running at a pressure of 3.20x10^8 Pa , what is its
running pressure in torr?
Express the pressure numerically in torr.

3.20 x 10^8 Pa = _____ torr

Answers

Answer:

2,400,000 torr (3 s.f.)

Explanation:

Convert the pressure from Pascal to atm first:

[tex]\boxed{1 \: atm = 101325 \:Pa }[/tex]

3.20 ×10⁸ Pa

= [(3.20 ×10⁸) ÷101325] atm

= 3158.2 atm (5 s.f.)

Convert atm to torr:

[tex]\boxed{1 \: atm = 760 \: torr}[/tex]

3158.2 atm

= (3158.2 ×760) torr

= 2400000 torr (3 s.f.)

How much water will the measuring cup have if you poured 1/2 of it out?

Answers

The cup will be filled up halfway

Describe what happens to the particles when a substance:

1. Melts

2. Freezes

3. Boils

4. Condenses

Answers

Particles vibrate when frozen when it boils it moves like you had 4 monsters in the morning
1. It will melt.
2. It will freeze.
3. It will evaporation.
4. It will freeze.

can you answer with working out ​

Answers

This is your answer I hope it is right.

write any two conditions at which a body of certain mass weightless​

Answers

Answer:

A body becomes weightless in a zero-gravity scenario and when a force is applied to a body that is equal and opposite to the force of gravity. If the body is falling only under the influence of gravity.

Answer:

A body becomes weightless in a zero-gravity scenario and when a force is applied to a body that is equal and opposite to the force of gravity.If the body is falling only under the influence of gravity.

- calculate relative formula mass
[N=14, O=16, Mg=24, Al=27]

1) Mg(NO3)2

- calculate relative molecular mass
[H=1, C=12, O=16]

1) C4H10

2) CH3COOH​

Answers

Mg(NO3)2:-

[tex] \\ \sf \longmapsto \: 24u+2(14u+3\times 16u)[/tex]

[tex] \\ \sf \longmapsto \: 24u+2(14u+48u)[/tex]

[tex]\\ \sf \longmapsto \: 24u+2(62u)[/tex]

[tex] \\ \sf \longmapsto \: 24u+(124u)[/tex]

[tex] \\ \sf \longmapsto \: 148u[/tex]

PLZ HELP Matthew wants to study how the body responds when the skin is broken. He learns that particles in the blood clump together at the site of the wound to stop the bleeding while the skin heals. Which of the following body systems is involved in carrying the blood to the site of the wound?
A. Cardiovascular
B. Skeletal
C. Respiratory
D. Muscular​

Answers

Answer:

A, Cardiovascular system

cardiovascular system

Question 5
1.00 g of He, 14.0g F2, and 19.0 g Ar are placed in a 13.0-L container at 20.0 °C.

The total pressure (in atm) in the container is _____ atm.

1 point

Answers

Answer:

2.03 atm

Explanation:

Number of moles of He = 1g/4g/mol = 0.25 moles

Number of moles of F2 = 14.0g/38 g/mol = 0.37 moles

Number of moles of Ar=19.0g/40g/mol = 0.48 moles

Total number of moles = 0.25 + 0.37 + 0.48 = 1.1 moles

From;

PV=nRT

P= pressure of the gas mixture

V= volume of the gas mixture

n= total number of moles of the gas mixture

R= gas constant

T= temperature of the gas mixture

P= nRT/V

P= 1.1 × 0.082 × 293/13

P= 2.03 atm

c. The element in group 2 and period 3 is -

Answers

Answer:

Magnesium

Explanation:

Hope this helps!

How long can crater fires burn?

Answers

Answer:

I would have to say More than 40 years

the text of oxygen gas in the laboratory ​

Answers

Explanation:in testing for oxygen a glowing splint is used.

the glowing splint is brought in the presence of the test tube containing the gas

the glowing splint rekindles or lights up showing that oxygen is present.

this is a positive test because oxygen supports burning or combustion

An atom with 6 protons and 8 neutrons is an)

Answers

Answer: carbon (C)

Explanation:

which of the following is a physical change? 1.burning paper 2.grinding wheat 3.electrolysis of water 4.cooking rice​

Answers

Answer:

2 grinding of wheat is just a physical change

plz brainlist

Convert the following absolute temperatures to centigrade.
i) 0 K
ii) 298 K
iii) 323 K
iv) 423 K

SHOW STEP BY STEP

Answers

Answer:

0 K

[tex]{ - \bf{273 \degree C}}[/tex]

298 K

[tex]{ \tt{ = 298 - 273}} \\ = { \bf{25 \degree C }}[/tex]

323 K

[tex]{ \tt{ = 323 - 273}} \\ = { \bf{50 \degree C}}[/tex]

423 K

[tex]{ \tt{ = 423 - 273}} \\ = { \bf{150 \degree C}}[/tex]

1.T=[£+273]

=273

It is because kelvin temperature is absolute zero.

Determine the mass in grams of 3.60 mol of H2 SO4

Answers

Answer:

Explanation:

There are 353 grams of H2SO4 in 3.60 moles of H2SO4.

How does a cirrus cloud look like
1) cotton
2) thin feather​

Answers

Answer:

2) thin feather​

Explanation:

Cirrus clouds are delicate, feathery clouds that are made mostly of ice crystals. Their wispy shape comes from wind currents which twist and spread the ice crystals into strands.

hope it helps :)

please mark brainliest!!!

Explain Froath Flotation Method!

Answers

Explanation:

a process for separating minerals from gangue by taking advantage of the differences in their hydrophobicity.

I believe that is accurate

hope this helped have a nice day

and mark me brainiest :)

Một hỗn hợp X gồm CH3OH; C2H5OH; phenol có khối lượng 28,9 gam phản ứng vừa hết với 100ml dung dịch NaOH 2M. Phần trăm theo khối lượng phenol là ? Biết C = 12; O = 16; H = 1; Na = 23. *

Answers

Answer: bạn viết phương trình Phenol + NaOH

=> nNaOH = nPhenol = 0,2 mol

m Phenol = 0,2x94 = 18,8 gam

%mPhenol = 18,8/28,9% = 65,05

Explanation:

Determine the mass of 6.33 mol of iron(II) nitrate.

Answers

Answer:

1822.72 g

Explanation:

Applying,

n = R.M/M.M.................. Equation 1

Where n = number of moles of iron(II) nitrate, R.M = Reacting mass of iron(II) nitrate, M.M = molar mass of Iron(II) nitrate.

Make R.M the subject of the equation

R.M = n×M.M............. Equation 2

From the question,

Given: n = 6.33 mol

Constant: M.M of iron(II) nitrate = 287.95 g/mol

Substitute these values into equation 2

R.M = 6.33(287.95)

R.M = 1822.72 g

Hence the mass of iron(II) nitrate is 1822.72 g

PLZ HELP Question 2 of 25 What is the total number of atoms in the molecule CzHg?
A. 2
B. 8
C. 11
D. 3​

Answers

A. 2

One Cs (Caesium), the other one Hg (Mercury)

Note: we don't have Cz this might be Cs

How is a slump different from creep?

Answers

Answer:

Is this chemistry or ELA!

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