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tensa zangetsu [6.8K]
3 years ago
14

Calculate the mass of a liquid with a density of 3.2 g/ml and a volume of 25 ml

Chemistry
1 answer:
erma4kov [3.2K]3 years ago
4 0
The equation is x/25=3.2
                         *25    *25
                         -------------
                          x=80g
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Calculate the volume of .987 mol of gas at stp will occupy
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Number of moles = volume / (molar volume)
Molar volume at stp = 22.4 dm^3
Volume = no of moles × molar volume
= 0.987 × 22.4
= 22.1088 dm^3
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Hope it helped!
5 0
3 years ago
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A copper atom has a mass of 1 06 times 10^-22 g and a penny has a mass of 2.5 g. Use this information to answer the questions be
amm1812

Answer:

Mass of 1 mole of copper is 63.83 g.

0.03916 moles of copper atoms have a mass equal to the 2.5 grams of copper penny.

Explanation:

Mass of 1 copper atom,m = 1.06\times 10^{-22} g

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Mass of 1 mole of copper = 63.83 g

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Moles of copper in 2.5 g of copper penny:

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0.03916 moles of copper atoms have a mass equal to the 2.5 grams of copper penny.

8 0
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How many grams of Mg(ClO3)2 are needed to make 1,500 mL of a 2.5 N solution ?​
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Answer:

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2 Zn + O2 → 2 ZnO
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Answer:

we need 6.0 moles of zinc (Zn)

Explanation:

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Number of moles ZnO produced = 6.0 moles

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Step 3: Calculate moles zinc

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