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3 years ago

3,560 into scientific notation

Chemistry

1 answer:

erma4kov [3.2K]3 years ago

3 0

Answer:

3.56 x 10^3

Explanation:

In order to put in in scientific notation, the number must be between 1-10 and must be multiplied by a power of 10. We can turn 3560 into a number 1-10 by moving the decimal up.

We move it up 3 spaces. 3.560

Since we moved it up 3 spaces, we need to multiply it by 10^3

3.56 x 10^3

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The heat required to raise the temperature has been expressed as:

$\rm Heat=mass\;\times\;specific\;heat\;\times\;Change\;in\;temperature$

<h3>Computation for the heat energy required</h3>

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Read 2 more answers

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Answer:

ΔHr = -103,4 kcal/mol

Explanation:

Using:

AH° (kcal/mol)

Metano (CH)

-17,9

Cloro (CI)

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Acido cloridrico (HCI)

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It is possible to obtain the ΔH of a reaction from ΔH's of formation for each compound, thus:

ΔHr = (ΔH products - ΔH reactants)

For the reaction:

CH₄(g) + Cl₂(g) → CCl₄(g) + HCl(g)

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The ΔH's of formation for these compounds are:

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ΔH Cl₂(g): 0 kcal/mol

ΔH CCl₄(g): -33,3 kcal/mol

ΔH HCl(g): -22 kcal/mol

The ΔHr is:

-33,3 kcal/mol × 1 mol + -22 kcal/mol× 4 mol - (-17,9 kcal/mol × 1 mol + 0kcal/mol × 4mol)

ΔHr = -103,4 kcal/mol

I hope it helps!

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