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12345 [234]
2 years ago
7

HELPPp now plsss I really need help !!!!!

Chemistry
1 answer:
blondinia [14]2 years ago
5 0

Answer:

The Forces that form each star would be your answer :)

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Are light and other forms of energy are made of atoms
MatroZZZ [7]

Answer:

yes they are

Explanation:

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2 years ago
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Which type of fuel can only be used in certain geographic areas?
Lisa [10]
Answer:

A. Nuclear

Explanation:

This is because it could cause severe environmental damage in areas inhabited by the public

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2 years ago
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An oxygen atom has a mass of 2.66 x 10^-23 g and a glass of water has a mass of 0.050kg. Use this information to answer the ques
fomenos
<h2>ANSWER OF EACH PART ARE GIVEN BELOW</h2>

Explanation:

A)

We know, each mole contains N_A= 6.023 \times 10^{23} atoms.

It is given that mass of one oxygen atom is m= 2.66\times 10^{-23}\ g.

Therefore, mass of one mole of oxygen, M=m\times N_A.

Putting value of n and N_A,

M=2.66\times 10^{-23}\times 6.023\times 10^{23} \ gm\\M=16.0\ gm

B)

Given,

Mass of water in glass=0.050 kg = 50 gm.

From above part mass of one mole of oxygen atoms = 16.0 gm.

Therefore, number of mole of oxygen equivalent to 50 gm oxygen=\dfrac{50}{16}=3.1 \ moles.

LEARN MORE :

Avogadro's number

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3 0
3 years ago
PLZ HELP IM CONFUSED
Marina CMI [18]

Answer:

9.1 mol

Explanation:

The balanced chemical equation of the reaction is:

CO (g) + 2H2 (g) → CH3OH (l)

According to the above balanced equation, 2 moles of hydrogen gas (H2) are needed to produce 1 mole of methanol (CH3OH).

To convert 36.7 g of hydrogen gas to moles, we use the formula;

mole = mass/molar mass

Molar mass of H2 = 2.02g/mol

mole = 36.7/2.02

mole = 18.17mol

This means that if;

2 moles of H2 reacts to produce 1 mole of CH3OH

18.17mol of H2 will react to produce;

18.17 × 1 / 2

= 18.17/2

= 9.085

Approximately to 1 d.p = 9.1 mol of methanol (CH3OH).

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3 years ago
What negative impact did chemistry have on society through the production and use of chlorofluorocarbons (CFCs)?
andrey2020 [161]
<span>The answer to your question is the 3rd option </span>
6 0
3 years ago
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