3 years ago

How many moles are in 9.8 grams of calcium?

1 answer:

Alexxx [7]3 years ago

8 0

The answer is 0.24 moles.

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If he covered the 100m in 9.58 seconds, that's a speed of 100/9.58 = 10.44 m/s (which is 23.35 mph)

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3 years ago

Stels [109]

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3 years ago

zubka84 [21]

Answer : The volume (in mL) of 95% ethanol added would be, 1.39

Explanation :

As we are given that:

Mass of 95 % ethanol = 1.2 g

Density of 95 % ethanol = 0.86 g/mL

Formula used :

$\text{Volume of ethanol}=\frac{\text{Mass of ethanol}}{\text{Density of ethanol}}$

$\text{Volume of ethanol}=\frac{1.2g}{0.86g/mL}$

$\text{Volume of ethanol}=1.39mL$

Therefore, the volume (in mL) of 95% ethanol added would be, 1.39

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3 years ago

Alex777 [14]

Answer:

C. NaOH acts as a reactant in the reaction

Explanation:

Because during the saponification process, Na+ replaces the H+ in the fatty acid been used for the saponification process

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4 years ago

melomori [17]

C=Carbon Mass percent of: 44.4424 %
H=Hydrogen Mass percent of: 3.7296 %
N=Nitrogen Mass percent of: 51.8280 %

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4 years ago