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Maru [420]
3 years ago
11

How many moles of sodium cyanide (NaCN) would be needed to produce 4.2 moles of sodium sulfate (Na2SO4)? H2SO4 + 2NaCN → 2HCN +

Na2SO4
Chemistry
2 answers:
Alexus [3.1K]3 years ago
6 0

Answer: 8.4 mol NaCN

Explanation: I just took the quiz and it was correct:)

leonid [27]3 years ago
4 0
The purpose of a chemical equation is to relate the amounts of reactants to the amounts of products based on the rate each is consumed. In this problem, one mole of sulfuric acid is consumed along with two moles of sodium cyanide to produce two moles of hydrocyanic acid and one mole of sodium sulfate. The relationship between sodium cyanide and sodium sulfate is 2:1, meaning that two moles of NaCN is required to produce one mole of sodium sulfate.

To produce 4.2 moles of sodium sulfate, two times this amount of NaCN is required. This means that you would need 8.4 moles of sodium cyanide.

Hope this helps!
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Base changes phenolphthalein to pink it is true or false​
galben [10]

Answer:

It’s false

Explanation:

it could be true if the question mentioned alkaline solution

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3 years ago
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A. Identify the structure drawn below.
nadya68 [22]

Answer:

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You have a carbon structure with only single bonds.  This means that the name will end in -ane.

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7 0
3 years ago
A cylinder is labeled \"PENTANE.\" When the gas inside the cylinder is monochlorinated, five isomers of formula C5H11Cl result.
melisa1 [442]

Answer:

a mixture of two these

Explanation:

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Isopentane has four different types of equivalent hydrogen atoms hence four isomeric monochlorides are formed.

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8 0
3 years ago
24 g of magnesium were burned in oxygen. The compound formed had a mass of 40 g. Explain why the mass had gone up.
DIA [1.3K]

Answer :

According to the law of conservation of mass, the mass of reactants must be equal to the mass of products.

The balanced chemical reaction is,

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From the given balanced reaction, we conclude that

As, 1 mole of magnesium react \frac{1}{2} mole of oxygen to give 1 mole of magnesium oxide.

So, the mass of Mg is 24 g, the mass of O_2=\frac{1}{2}\times 32=16g and the mass of MgO is 40 g.

That means 24 g of Mg react with 16 g O_2 to give 40 g of MgO.

8 0
3 years ago
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Reika [66]
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3 0
3 years ago
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