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3 years ago

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

aalyn [17]

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
= 22108.8 cm^3

Hope it helped!

5 0

3 years ago

Read 2 more answers

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 = $1.06\times 10^{-22} g$

$1 mole = 6.022\times 10^{23} atoms$

Mass of 1 mole of copper :

= $6.022\times 10^{23} atoms\times 1.06\times 10^{-22} g=63.83 g$

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$\frac{2.5 g}{63.83 g/mol}=0.03916 mol$

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

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3 years ago

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

yarga [219]

Answer:

Explanation:

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2 years ago

2 Zn + O2 → 2 ZnO

meriva

Answer:

we need 6.0 moles of zinc (Zn)

Explanation:

Step 1: Data given

Number of moles ZnO produced = 6.0 moles

Step 2: The balanced equation

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For 2 moles Zinc we need 1 mol Oxygen to produce 2 moles Zinc oxide

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