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3 years ago

How many moles and atoms are there in 60 grams of Calcium? quick answer plz i m preparing for exams

Chemistry

1 answer:

Nesterboy [21]3 years ago

4 0

Answer:

the number of mol that 60 gram of calcium will have this 1.5 mol.

as number of mole is equal to

n=w/m which is

60/40 which is 1.5 mol

and that of the number of atoms it will have will be 60 over 40 times the algorithm constant 6.223 times 10 to the power 23 which will give 9.0 345 ×10²³

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If a chemist has 17.8 moles of N2H4O3, what is the mass of the sample?<br><br> show work plz

harkovskaia [24]

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3 years ago

A chemist adds 135.0 mL of a 0.21M zinc nitrate (Zn(NO3) solution to a reaction flask. Calculate the mass in grams of zinc nitra

yKpoI14uk [10]

Answer:

5.36 grams the mass in grams of zinc nitrate the chemist has added to the flask.

Explanation:

$Molarity=\frac{\text{Moles of solute}}{\text{Volume of the solution (L)}}$

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0.02835 mol × 189 g/mol = 5.358 g ≈ 5.36 g

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4 years ago

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3 years ago

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Read 2 more answers

Needed help plzzz on this chemistry homework.

mrs_skeptik [129]

Hertz is units for frequency. (waves per second)
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if you're given the speed use that to calculate, if not then you can probably assume it's a wave of light and use the speed of light (3x10^8 m/s) to calculate.

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3 years ago