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3 years ago

How are copper sulfate and copper sulfide different in term of the elements they contain

2 answers:

8 0

Copper sulphide has the formula CuS and copper sulphate is CuSO4

CuS is a compound of sulphur and copper only while CuSO4 has these 2 elements plus Oxygen

Dovator [93]3 years ago

6 0

<u>Answer:</u> Copper sulfate has oxygen element in it while copper sulfide does not have.

<u>Explanation:</u>

Copper sulfate is formed by the combination of copper and sulfate ions. The chemical formula for this compound is $CuSO_4$

It is formed by the combination of atoms of copper, sulfur and oxygen elements.

Copper sulfide is formed by the combination of copper and sulfide ions. The chemical formula for this compound is $CuS$

It is formed by the combination of atoms of copper and sulfur elements.

Hence, copper sulfate has oxygen element in it while copper sulfide does not have.

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100.0 mL of 3.8M NaCN, the minimum lethal concentration of sodium cyanide in blood serum

9966 [12]

The given question is incomplete. The complete question is:

Calculate the number of moles and the mass of the solute in each of the following solution: 100.0 mL of 3.8 × 10−5 M NaCN, the minimum lethal concentration of sodium cyanide in blood serum

Answer: The number of moles and the mass of the solute are $0.38\times 10^{-5}$ and $18.62\times 10^{-5}g$ respectively

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

$Molarity=\frac{n\times 1000}{V_s}$

where,

n = moles of solute

$V_s$ = volume of solution in ml

$3.8\times 10^{-5}M=\frac{n\times 1000}{100.0}$

$n=0.38\times 10^{-5}$

n = moles of $NaCN$ = $\frac{\text {given mass}}{\text {Molar mass}}$

$0.38\times 10^{-5}=\frac{x}{49g/mol}$

$x=18.62\times 10^{-5}g$

Thus the number of moles and the mass of the solute are $0.38\times 10^{-5}$ and $18.62\times 10^{-5}g$ respectively

6 0

3 years ago

HSO3''(aq)

horrorfan [7]

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3 years ago

What statement best describes solution

kirza4 [7]

Solution is a mixture of solvent and solute. Which dissove completely.

Examples of Solvent - Water

Solute - Salt

Solution - Salt solution

Together when the combines, it became a solution

*** It have to dissolve completely. Particles cannot be left in the cup(container). The only way to seprate them is to use EVAPORATION METHOD.

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4 years ago

Who believed and tested his idea that microorganisms are carried through the air?

kondor19780726 [428]

Louis Pasteur designed a procedure to test whether sterile nutrient broth could spontaneously generate microbial life. To do this, he set up two experiments.

Hope this helps !

Have a great day! :)

7 0

3 years ago

Read 2 more answers

Conduction or convection

denpristay [2]

Answer:

1 radiation

2 conduction

3 radiation

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3 years ago