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aleksandr82 [10.1K]
3 years ago
7

Need help with 14 please & thank you

Chemistry
1 answer:
Andrei [34K]3 years ago
3 0

Answer:

B

Explanation:

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A balloon (approximate as a sphere) is inflated such that its
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Answer: 1436 mL

Explanation: 4/3 • 3.14 • 7^3 <— calculate

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3 years ago
Can someone PLEASE HELP me? <br><br> How can you tell if a bond is Covalent?
g100num [7]
There is a couple different ways to determine if a bond is ionic orcovalent. By definition, an ionicbond is between a metal and a nonmetal, and a covalent bond is between 2 nonmetals. So you usually just look at the periodic table and determine whether your compound is made of a metal/nonmetal or is just 2 nonmetals.
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3 years ago
Why don’t all of the particles in an atom contribute to the mass?
kotegsom [21]

Answer:

Explanation:

The mass of an atom is dependent on its number of protons and neutrons. Electrons have mass, but are too light in comparison to protons and neutrons to contribute towards the overall mass. Their relative mass is about 1/1840 compared to 1 for protons and neutrons, and therefore are not counted in the mass.

Hope this helped!

4 0
3 years ago
Convert 125 kPa to atm<br><br>A. 12,700 atm<br><br>B. 0.164 atm<br><br>C. 1.23 atm​
JulijaS [17]

Answer:

c sounds like the most reasonable answer rember to always divide the pressure value by 101

6 0
3 years ago
Suppose you burn a substance in the air (reactants) and produce smoke and ash (products). The law of conservation of mass states
Aleks04 [339]

Answer:

<u>The same as</u> can best fill the space

Explanation:

The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. For example, when wood burns, the mass of the soot, ashes, and gases, equals the original mass of the charcoal and the oxygen when it first reacted.

It shows that when wood burns, it combines with oxygen and changes not only to ashes, but also to carbon dioxide and water vapor. The gases float off into the air, leaving behind just the ashes. Suppose you had measured the mass of the wood before it burned and the mass of the ashes after it burned. Also suppose you had been able to measure the oxygen used by the fire and the gases produced by the fire. What would you find? The total mass of matter after the fire would be the same as the total mass of matter before the burning.

3 0
3 years ago
Read 2 more answers
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