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Mars2501 [29]
3 years ago
15

How many grams are present in a sample of aluminum?

Chemistry
1 answer:
MrMuchimi3 years ago
5 0
Hyjhpyijyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyt      y y y y y y y y  yy   y y  y    y  y y   y y    y y y  y y y y y

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A gas of 19 mL at a pressure of 740 mmHg can be expected to change its pressure when its volume changes to 30. mL. Express its n
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To solve this we assume that the gas is an ideal gas. Then, we can use the ideal gas equation which is expressed as PV = nRT. At a constant temperature and number of moles of the gas the product of PV is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:

 

P1V1 =P2V2

P2 = P1V1/V2

P2 = 740mmhg x 19 mL / 30 mL

<span>P2 = 468.67 mmHg = 0.62 atm</span>

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3 years ago
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Butter melt when you heat it in a pan on the stove. Is this a chemical change or physical change? How can you tell?
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Methods scientist use to determine a change in physical or chemical change in an Item
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If this helped and you have any other questions, feel free to comment on my wall. Hope this helped.
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