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andre [41]
2 years ago
8

Describe how you could use a motor in reverse to generate electricity.

Chemistry
1 answer:
NNADVOKAT [17]2 years ago
4 0

Answer: stepper mother is good for that

Explanation:

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Given that cao(s) + h2o(l) → ca(oh)2(s), δh°rxn = –64.8 kj/mol, how many grams of cao must react in order to liberate 525 kj of
USPshnik [31]

Answer:

454.3 g.

Explanation:

  • From the given data:

1.0 mol of CaO liberates → – 64.8 kJ.

??? mol of CaO liberates → - 525  kJ.

∴ The no. of moles needed = (1.0 mol)(- 525 kJ)/(- 64.8 kJ) = 8.1 mol.

<em>∴ The no. of grams of CaO needed = no. of moles x molar mass</em> = (8.1 mol)(56.077 g/mol) = <em>454.3 g.</em>

8 0
2 years ago
How is the weathering of rocks by water different from the weathering of rocks by ice?
andrey2020 [161]

Answer:

It is because water is liquid and it can be weathered easily. While weathering by solid is a bit dangerous because of its hardness.

Explanation:

4 0
2 years ago
How many cubic centimeters are there in 200 milliliters?
DiKsa [7]

Answer:

200 mL = 200 cm³

Explanation:

The relationship between cm³ and mL is 1:1.

1 cm³ = 1 mL

Thus, 200 mL is converted to cm³ as follows:

(200 mL)(1 cm³/1 mL) = 200 cm³

3 0
3 years ago
The balanced chemical equation for the combustion of butane is: 2C2H2 + 5O2 CO2 + 2H2O 2CH4 + 5O2 2CO2 + 4H2O 2C4H10 + 13O2 8CO2
SCORPION-xisa [38]
Butane is C₄H₁₀.

C_4H_{10} + O_2 \to CO_2 + H_2O \\ \\&#10;\hbox{balance carbon and hydrogen on the right-hand side:} \\&#10;C_4 H_{10} + O_2 \to 4 \ CO_2 + 5 \ H_2O \\ \\&#10;\hbox{balance oxygen on the left-hand side:} \\&#10;C_4 H_{10} + \frac{13}{2} \ O_2 \to 4 \ CO_2 + 5 \ H_2O \\ \\&#10;\hbox{multiply by 2 to get rid of the fraction:} \\&#10;2 \ C_4H_{10} + 13 \ O_2 \to 8 \ CO_2 + 10 \ H_2O

The balanced equation is 2 C₄H₁₀ + 13 O₂ <span>→</span> 8 CO₂ + 10 H₂O.
3 0
3 years ago
How many atoms are in 5.5 moles of carbon dioxide
Veronika [31]

Answer: I think the answer is, 3.312177825e+24 atoms

Explanation: I had a problem similar to this, Hope this helps!

4 0
2 years ago
Read 2 more answers
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