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ELEN [110]
3 years ago
8

Fossil fuels indirectly rely on what source for their energy?

Chemistry
2 answers:
Ira Lisetskai [31]3 years ago
5 0

Answer:

The sun

Explanation:

I did it and got it correct :-)

Ivahew [28]3 years ago
4 0
B, the aún gives enough energy for the fossil fuels.
I think
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How many Hershey’s Kisses make up 1 MOLE?
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29

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What 4 elements did people originally think made up everything?
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If the heat of combustion for a specific compound is −1160.0 kJ/mol and its molar mass is 86.47 g/mol, how many grams of this co
notsponge [240]

Answer:

40.34 g

Explanation:

First, we divide the heat to release by the heat of combustion to obtain the required moles of compound:

541.20 kJ/(1160.00 kJ/mol) = 0.4665 mol

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Therefore, you must burn 40.34 grams of the compound to release 541.20 kJ of heat.

8 0
2 years ago
Calculate the concentration of H3O⁺ in a solution that contains 1.8 × 10-5 M OH⁻ at 25°C. Identify the solution as acidic, basic
balu736 [363]

Answer:

A. 5.5 × 10⁻¹⁰ M, acidic

Explanation:

Step 1: Given data

Concentration of H₃O⁺: 1.8 10⁻⁵ M

Step 2: Calculate the concentration of OH⁻

We will use the ionic product of water.

Kw = 1.0 × 10⁻¹⁴ = [H₃O⁺] × [OH⁻]

[OH⁻] = 1.0 × 10⁻¹⁴/[H₃O⁺] = 1.0 × 10⁻¹⁴/1.8 10⁻⁵ = 5.5 × 10⁻¹⁰ M

Step 3: Determine if the solution is acidic, basic or neutral

  • If [H₃O⁺] > 10⁻⁷ M, the solution is acidic.
  • If [H₃O⁺] = 10⁻⁷ M, the solution is neutral.
  • If [H₃O⁺] < 10⁻⁷ M, the solution is basic.

Then, the solution is acidic.

8 0
3 years ago
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