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3 years ago

How many moles of oxygen are prosent in 169 of oxygen gas?

Chemistry

2 answers:

pashok25 [27]3 years ago

8 0

Answer:

number of moles = mass / molar mass

since oxygen is diatomic

molar mass =16*2

number of moles= 169/ 16 *2

number of moles= 169/32

number of moles= 5.28125

slamgirl [31]3 years ago

6 0

Answer:

Number of moles=Mass/ Molar Mass 169g÷32g/mol= 5.281 mol

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3 years ago

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3 years ago

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3 years ago

An alloy of bronze is manufactured by melting 51.2 g of copper with 6.84 g of tin. What is the percent copper in the bronze?

Harlamova29_29 [7]

Answer:

Percentage of copper = 88%

Explanation:

Given data:

Mass of copper = 51.2 g

Mass of tin = 6.84 g

Percentage of copper = ?

Solution:

Formula:

Percentage of copper = mass of copper / total mass × 100

Now we will determine the total mass:

Total mass = mass of copper + mass of tin

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3 years ago

How many moles of oxygen are prosent in 169 of oxygen gas?​

How many moles of oxygen are prosent in 169 of oxygen gas?