2 years ago

The density of nitric acid (HNO3) is 1.41 g/ml. how many ml are in 20.0g of the nitric acid?

Chemistry

1 answer:

soldi70 [24.7K]2 years ago

7 0

Answer:

14.2

Explanation:

to find mL we must cancel grams we do this by the equation:

20/1.41 = 14.2 mL

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Convert 5.50 mol of MgO to g.

Fiesta28 [93]

Answer:

5.50 moles of magnesium oxide is 221.6742 grams

Explanation:

to do this you multiply the number of moles by the molar mass

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1 year ago

The chemical formula of glucose is C6H12O6, so it is classified as a(n)

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2 years ago

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if the density of copper is 8.9g/cm^3 and the Volume of the sample is 23.4 mL what would be the mass?

Black_prince [1.1K]

Answer:

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Explanation:

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2 years ago

What is the salt produced when calcium hydroxide, Ca(OH)2, reacts with phosphoric acid, H3PO4, in a neutralization reaction?

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2 years ago

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A chemical reaction that is first-order in X is observed to have a rate constant of 1.50 × 10–2 s–1. If the initial concentratio

elena-s [515]

Answer:

0.053 M is the concentration of X after 196 seconds.

Explanation:

Initial concentration of the X = $[A_o]=1.0 M$

Time taken by the sample, t = 196 s

Final concentration of the X after t = [A] =?

Rate constant of the reaction = k = $1.50\times 10^{-2} s^{-1}$

Formula used :

$[A]=[A_o]\times e^{-kt}$

where,

Now put all the given values in this formula, we get

$[A]=[1.0M]\times e^{-1.50\times 10^{-2} s^{-1}\times 196 s}$

$[A]=0.053 M$

0.053 M is the concentration of X after 196 seconds.

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2 years ago