2 years ago

0/10 The molar mass of iron

Chemistry

2 answers:

valentinak56 [21]2 years ago

5 0

Answer:

0.459 moles

Explanation:

See the attached photo.

In-s [12.5K]2 years ago

3 0

Answer:

0.46 moles

Explanation:

Mole and Mass are related as,

Moles = Mass / M.Mass

M.Mass of Sulfuric Acid = 98.08 g/mol

Moles = 45 g / 98.08 g/mol

Moles = 0.46 moles

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What dose it mean to say that mass is conserved during a physical change?

pentagon [3]

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3 years ago

A gas mixture contains oxygen, nitrogen, and carbon dioxide. It has a pressure of 250 mmHg. If the pressure of oxygen is 50 mmHg

kondor19780726 [428]

Answer:

$P_{CO_2}=25mmHg$

Explanation:

Hello there!

In this case, according to the Dalton's law, which explains that the total pressure of a gaseous system equals the sum of the partial pressures of the gases composing, for the gaseous mixture composed by oxygen, nitrogen and carbon dioxide it would be possible to write:

$P_{tot}=P_{N_2}+P_{O_2}+P_{CO_2}$

Now, given the pressure of the system and those of oxygen and nitrogen, we calculate that of carbon dioxide as shown below:

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2 years ago

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