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3 years ago

5

Mixed Practice:

1 answer:

-Dominant- [34]3 years ago

4 0

Given

Mass of NO - 824 g

Molar mass of NO - 30.01g/mol

No of moles of NO = Given mass/Molar mass

No of moles of NO = 824/30.01= 27.45 mole

Hence 27.5 moles of NO are formed!

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To be balanced, the hydrogen and chlorine atoms are both 2 and 2 in the products side. Hence, we must add a two to the HCl in order to have 2 hydrogens and 2 chlorines in the reactants.

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3 years ago

During a chemical reaction, 25.0 g of propane burns with 90.7 g of oxygen to form carbon dioxide and water. what mass of carbon

dusya [7]

The chemical equation for the combustion of propane can be represented as,

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5 0

3 years ago

If 5.4 g of NaNO3 is dissolved in 350 mL of water, what is the molarity of the solution?

Aleonysh [2.5K]

Answer:

0.18 Moles

Explanation:

first you need to convert the 5.4g to moles using molar mass

$(\frac{5.4g}{1})(\frac{1mol}{84.99g} )=\frac{5.4g}{84.99g} =0.0635mol NaNO_{3}$ )

once you have that done you can use the molarity equation to get the answer

$M=\frac{0.0635mol}{0.350ml} =0.181428$

now you need to round to the correct sig fig which will give you the correct answer of 0.18moles

4 0

3 years ago