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3 years ago

Help Chem with give brainlsit

Chemistry

1 answer:

motikmotik3 years ago

4 0

Answer:

0.15 mol HCl / 0.4 L H20 = 0.375 M HCl

Explanation:

Plug in :)

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The chemical symbol for a calcium ion is ca2 . what does the 2 symbolize

Blababa [14]

2 stands for valency of ca ion

its +2

that it takes two electrons to complete its shell

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3 years ago

Which transformation represents light energy transforming into chemical energy?

ZanzabumX [31]

I think the best answer is C. Since the light energy would be the sun and chemical energy being the glucose that feeds the plant.

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3 years ago

How does the number of coupons you use affect the amount of money you save?

slega [8]

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3 years ago

Determine the molar mass of CuSO4 (the solute) in a 1.0M aqueous solution of CuSO4

inna [77]

Answer:

See explanation.

Explanation:

Hello,

In this case, we could have two possible solutions:

A) If you are asking for the molar mass, you should use the atomic mass of each element forming the compound, that is copper, sulfur and four times oxygen, so you can compute it as shown below:

$M_{CuSO_4}=m_{Cu}+m_{S}+4*m_{O}=63.546 g/mol+32.00g/mol+4*16.00g/mol\\\\M_{CuSO_4}=159.546g/mol$

That is the mass of copper (II) sulfate contained in 1 mol of substance.

B) On the other hand, if you need to compute the moles, forming a 1.0-M solution of copper (II) sulfate, you need the volume of the solution in litres as an additional data considering the formula of molarity:

$M=\frac{n_{solute}}{V_{solution}}$

So you can solve for the moles of the solute:

$n_{solute}=M*V_{solution}$

Nonetheless, we do not know the volume of the solution, so the moles of copper (II) sulfate could not be determined. Anyway, for an assumed volume of 1.5 L of solution, we could obtain:

$n_{solute}=1mol/L*1.5L=1.5mol$

But this is just a supposition.

Regards.

4 0

3 years ago

PLSS CAN ANYONE HELP ME..

rodikova [14]

Answer:

there is two mixture homogeneous and heterogeneous mixture

7 0

3 years ago