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Thepotemich [5.8K]
2 years ago
8

1. Sam needs to know the volume of a cardboard box. Which tool

Chemistry
1 answer:
andreyandreev [35.5K]2 years ago
5 0
Ruler is the answer of this question
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An atom that has lost or gained electrons is known as an ion. Which compound below is made up of ions?
Tju [1.3M]

Answer:

KBr

Explanation:

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3 years ago
Which has greater internal energy, 1 kg of water or 1 g of water, at the same temperature?
Natali5045456 [20]

1kg of water has greater internal energy compared to 1g of water because 1kg of water has more mass.

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3 years ago
How many moles are in 25 grams of HF
sergey [27]
Using this equation, we can take 25/(1.0 + 19) and find that it is equal to 1.25 moles.
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3 years ago
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Consider two equal-volume flasks of gas at the same temperature and pressure. One gas, oxygen, has a molecular mass of 32. The o
san4es73 [151]

Answer: The ratio of the number of oxygen molecules to the number of nitrogen molecules in these flasks is 1: 1

Explanation:

According to avogadro's law, equal volumes of all gases at same temperature and pressure have equal number of moles.

According to avogadro's law, 1 mole of every substance contains avogadro's number 6.023\times 10^{23} of particles.

Thus as oxygen and nitrogen are at same temperature and pressure and are in equal volume flasks , they have same number of moles and thus have same number of molecules.

The ratio of the number of oxygen molecules to the number of nitrogen molecules in these flasks is 1: 1

3 0
3 years ago
Balance this equation. If a coefficient of "1" is required, choose "blank" for that box. ____CO +____ O2 → ____CO2
Black_prince [1.1K]
<h3><u>Answer;</u></h3>

2, Blank, 2 ;

<h3><u>Explanation;</u></h3>

The balanced chemical equation would be;

2 CO + O2 → 2 CO2

Balancing a chemical equation ensures that the number of atoms of each element are equal on both the reactants side and the products side. This ensures that the law of conservation of mass is obeyed in chemical reactions.

4 0
3 years ago
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