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abruzzese [7]
3 years ago
12

What is the mass of 6.78x1050 molecules of NaCl

Chemistry
1 answer:
ryzh [129]3 years ago
6 0

Answer:

Explanation:

As

Molar mass of NaCl= 58.44 gm

So we got it that,

58.44 mass of NaCl contain = 6.023*10^23  molecules of Na Cl

x mass will contain = 6.78*10^50

by cross multiplication , we get

x=  58.44*(6.78*10^50)/  6.023*10^23  

x= 65.785 * 10^27  molecules

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2NaCl → 2Na +Cl2<br> What reaction is this
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Answer:

Decomposition reaction

Explanation:

A single reactant breaking down to form 2 or more products is decomposition

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3 years ago
What volume of 0.08892 M HNO3 is required to react completetly with 0.2352 g of potassium hydrogen phosphate?
galina1969 [7]

Answer:

0.0303 Liters

Explanation:

Given:

Mass of the potassium hydrogen phosphate = 0.2352

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Now,

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The number of moles of 0.2352 g of potassium hydrogen phosphate

= Mass / Molar mass

also,

Molar mass of potassium hydrogen phosphate

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Number of moles = 0.2352 / 174.15 = 0.00135 moles

thus,

The number of moles of HNO₃ required for  0.00135 moles

= 2 ×  0.00135 mol of HNO₃

= 0.0027 mol of HNO₃

Now,

Molarity = Number of Moles / Volume

thus,

for 0.0027 mol of HNO₃, we have

0.08892 = 0.0027 / Volume

or

Volume =  0.0303 Liters

8 0
3 years ago
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Sulfur and magnesium both have two valence electrons.<br> a. True<br> b. False
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It would be false sulfur has 6 
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Wendy is using a poorly calibrated electronic balance to measure the mass of a crucible. Her technique in making the measurement
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A 0.02 molar solution of sodium chloride contains 0.1 mole of solute. What is the volume of the solution
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Answer:

Volume of solution = 5 L

Explanation:

Given data:

Molarity of solution = 0.02 M

Moles of solute = 0.1 mol

Volume of solution = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

by putting values,

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Volume of solution = 5 L

3 0
3 years ago
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