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PtichkaEL [24]
2 years ago
9

How much does the mass of 12.65-g sample of copper(II) nitrate hexahydrate decrease when heated?

Chemistry
1 answer:
garik1379 [7]2 years ago
4 0
There is 103 percent of water in hydrate
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How many grams of NaOH are produced from 1.20 x 10^2 of Na2O
oksian1 [2.3K]
Write an balance the equation

Na2O + H2O -> 2 NaOH

Calculate the molecular mass of Na2O and NaOH from the atomic mass from the periodic table.

Na = 23
O=16
H=1

Na2O = 23 * 2 + 16 = 62
NaOH = 23+16+1= 40

For the stoichiometry of the reaction one mole of Na2O = 62g produce two mol of NaOH = 2* 40= 80 g

120 g Na2O x 80g NaOH / 62g Na2O=

154.8 g NaOH
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3 years ago
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Explanation:

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How many moles do you need to prepare 1.675 L of a 8.50 M NaOH solution? Round your answer to 2 decimal places.
vampirchik [111]

Answer:

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Explanation:

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