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Harrizon [31]
3 years ago
7

Judy's brand new Lamborghini car travels 280 km in 4 hours. What is its average speed? ​

Chemistry
1 answer:
kobusy [5.1K]3 years ago
7 0
Speed= distance/time
Speed= 280/4
Speed= 70km/hr
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How to calculate moles
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Explanation:

First you must calculate the number of moles in this solution, by rearranging the equation. No. Moles (mol) = Molarity (M) x Volume (L) = 0.5 x 2. = 1 mol.

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If 9.6 X 1021 molecules of hydrogen are reacted with excess nitrogen, how many liters of ammonia can be produced at STP?
diamong [38]

The volume of NH₃ produced at STP : 0.237 L

<h3>Further explanation</h3>

Reaction

N₂ + 3H₂ → 2NH₃

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\tt \dfrac{9.61\times 10^{21}}{6.02\times 10^{23}}=1.596\times 10^{-2}~moles

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8 0
3 years ago
You are going to standardize your sodium hydroxide by titrating with potassium hydrogen phthalate. As an example, you dissolve 0
Kay [80]

Answer:

0.13 M

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n= CV

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C= concentration

V= volume in dm^3

n= number of moles

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1.65 × 10^-3 moles of KHP will react with 1.65 × 10^-3 moles of NaOH

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At the equivalence point, the KHP solution turned light pink.

4 0
3 years ago
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