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Art [367]
3 years ago
9

6. If 4 grams of salt is dissolved in 79 grams of water, what is the total mass of the final solution? [1 mark]

Chemistry
2 answers:
ICE Princess25 [194]3 years ago
6 0

Answer:

mass of solution=mass of solute+mass of solvent

=4+79

. =83g

nordsb [41]3 years ago
5 0

Answer:

A) 83g

Explanation:

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How many joules of energy are made by the loss of 100kg of mass using the formula E=mc2? please help!!!
asambeis [7]

Answer:

E = 3 × 10¹⁰ J

Explanation:

Mass, m = 100 kg

We need to find energy made by the loss of 100 kg of mass. The formula between the mass and energy is given by :

E = mc²

Where c is speed of light

Putting all the values, we get :

E = 100 kg × (3×10⁸ m/s)²

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Anna [14]

Answer:

-800 kJ/mol

Explanation:

To solve the problem, we have to express the enthalpy of combustion (ΔHc) in kJ per mole (kJ/mol).

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Now, we divide the heat released into the moles of CH₄ to obtain the enthalpy per mole of CH₄:

ΔHc = heat/mol CH₄ = 125 kJ/(0.15625 mol) = 800 kJ/mol

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\huge\underline\pink {Answer}

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ion

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Answer:

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