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3 years ago

How much heat does it take to raise 100g of aluminum (c= .9 J/gC) from 12.5C to 31C?

Chemistry

1 answer:

zlopas [31]3 years ago

5 0

Answer:

When two substances having different temperatures are introduced or kept together, heat energy, Q, flows from a substance at higher temperature to a substance at lower temperature. Also, heat continues to be transferred until their temperatures are equalized, at which point the substances are in thermal equilibrium. In a closed system, the amount of energy lost is equal to but opposite the amount of energy gained.

Explanation:

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Calculate the solubility of Mg(OH)2 in water at 25 C. You'll find Ksp data in the ALEKS Data tab. Round your answer to significa

elena-s [515]

Answer:

1.12 × 10⁻⁴ M

Explanation:

Step 1: Write the reaction for the solution of Mg(OH)₂

Mg(OH)₂(s) ⇄ Mg²⁺(aq) + 2 OH⁻(aq)

Step 2: Make an ICE chart

We can relate the solubility product constant (Ksp) with the solubility (S) through an ICE chart.

Mg(OH)₂(s) ⇄ Mg²⁺(aq) + 2 OH⁻(aq)

I 0 0

C +S +2S

E S 2S

The solubility product constant is:

Ksp = 5.61 × 10⁻¹² = [Mg²⁺] × [OH⁻]² = S × (2S)² = 4S³

S = 1.12 × 10⁻⁴ M

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3 years ago

Which location represents a period on a Periodic Table? A. a vertical row B. a horizontal row C. a diagonal row on the per

prohojiy [21]

The periods inside the Periodic Table is B. a horizontal row, and is numbered 1 through 7

hope this helps

7 0

4 years ago

A monomer is added to the end of a polymer chain in a __________ reaction.

aalyn [17]

Dehydration reaction

6 0

3 years ago

Read 2 more answers

IUPAC NAME FOR<br><br> [Fe(H2O)6](NO3)3

sdas [7]

Explanation:

hexaaqua iron (III) trinitrate

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2 years ago

Stoichiometry is based on the _______________________________

SCORPION-xisa [38]

Answer:

Explanation:

Stoichiometry is based on the <u>conservation of mass</u>.

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3 years ago