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nataly862011 [7]

2 years ago

8

Which answer below correctly identifies the type of change and the explanation for the boiling of water?

1 answer:

Trava [24]2 years ago

6 0

Answer:

The second choice: physical change because even though gas formation was observed, the water was undergoing a state change, which means that its original properties are preserved

(WAS ALREADY ANSWERED PREVIOUSLY)

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Which of the following happens during an endothermic chemical change?

Ede4ka [16]

Answer:

products have a higher potential energy than the reactants

Explanation:

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What element is used in making thermometers

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If it's the liquid inside:

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3 years ago

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3 years ago

Deep sea divers use a mixture of helium and oxygen to breathe. Assume that a diver is going to a depth of 150 feet where the tot

Svetlanka [38]

Answer:

4.525% is the percentage by volume of oxygen in the gas mixture.

Explanation:

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$0.20 atm=4.42 atm\times \chi_1$

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According Avogadro law:

$Moles\propto Volume$ (At temperature and pressure)

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Total moles of gases = n = 1 mol

Total Volume of the gases = V

$\frac{n_1}{V_1}=\frac{n}{V}$

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6 0

3 years ago

a wooden block with a mass of 2.0kg starts from at the top of an inclined plane and ends with a force of 25N at the bottom what

Papessa [141]

Answer:

F= m*a

25= 2*a

25/2=a

a=12.5

4 0

2 years ago