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kkurt [141]
3 years ago
10

Zinc carbonate and perchloric acid. complete and balance the following reactions

Chemistry
1 answer:
Ket [755]3 years ago
5 0

Answer:

ZnCO3 + 2HClO4 = Zn(ClO4)2 + CO2 + H2O

Explanation:

ZnCO3 + 2HClO4 = Zn(ClO4)2 + H2CO3

ZnCO3 + 2HClO4 = Zn(ClO4)2 + CO2 + H2O

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Write the balanced equation for the burning of nonane, c9h20, in air.
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3 years ago
A 12.0% sucrose solution by mass has a density of 1.05 gem, what mass of sucrose is present in a 32.0-mL sample of this solution
natulia [17]

Answer:

Option C. 4.03 g

Explanation:

Firstly we analyse data.

12 % by mass, is a sort of concentration. It indicates that in 100 g of SOLUTION, we have 12 g of SOLUTE.

Density is the data that indicates grams of solution in volume of solution.

We need to determine, the volume of solution for the concentration

Density = mass / volume

1.05 g/mL = 100 g / volume

Volume =  100 g / 1.05 g/mL → 95.24 mL

Therefore our 12 g of solute are contained in 95.24 mL

Let's finish this by a rule of three.

95.24 mL contain 12 g of sucrose

Our sample of 32 mL may contain ( 32 . 12) / 95.24 = 4.03 g

7 0
3 years ago
How is n1 in the Rydberg equation related to the quantum number n in the Bohr model?
gavmur [86]

Alove you!nswer:

Explanation545):

3 0
3 years ago
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oksano4ka [1.4K]

Answer: a. 0.26mol

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Explanation:

OK

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