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Klio2033 [76]
2 years ago
7

Calculate the molarity when 28.91 grams of nacl is dissolved in 352 ml of water

Chemistry
1 answer:
Marina CMI [18]2 years ago
7 0

Answer:

divide the number of moles of NaCl by the volume of the solution. In this case that is 0.32 moles, NaCl split by 3.4 L gives 0.094 M NaCl.

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How many grams of NaF form when .5 mol of HF reacts with excess Na2SiO3?
IgorLugansk [536]

Answer:

5.25g

Explanation:

We'll begin by writing the balanced equation for the reaction. This is shown below:

Na2SiO3 + 8HF → H2SiF6 + 2NaF + 3H2O

From the balanced equation above,

8 moles of HF reacted to produce 2 moles of NaF.

Therefore, 0.5 moles of HF will react to produce = (0.5 x 2)/8 = 0.125 mole of NaF.

Next, we shall convert 0.125 mole of NaF to grams.

This is illustrated below:

Mole of NaF = 0.125 mole

Molar mass of NaF = 23 + 19 = 42g/mol

Mass of NaF =..?

Mass = mole x molar mass

Mass of NaF = 0.125 x 42

Mass of NaF = 5.25g

Therefore, 5.25g of NaF is produced from the reaction.

7 0
3 years ago
What is the mass of a wooden block with a density 2.0 and a volume of 7.0? (Need answer ASAP!!)
Scorpion4ik [409]

Answer:

mass= 14kg

Explanation:

density= mass/volume

so that means mass= volume x density

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m= 14 kg

Hope this helps

5 0
4 years ago
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Dennis_Churaev [7]

Answer:

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4 0
2 years ago
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What is the molarity of a solution prepared by dissolving 8 grams of BaCl2 in enough
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Answer:

Explanation:

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the cell enentually dies because it has no way to survive

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