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3 years ago

Which statement describes steps involved in the production of hydroelectric power?

Chemistry

1 answer:

jek_recluse [69]3 years ago

5 0

Answer:

A) Moving water turns a paddle wheel that helps generate electricity.

Explanation:

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Calculate no. Of moles in 329g of H2so4

Anestetic [448]

Mol= mass (grams) /Mr
Mr of Sulfuric Acid (H2SO4): 98
mol= 329/98
=3.36 moles

8 0

3 years ago

When taking a measurement with a pH meter, keep the instrument in the _______storage solution or water until it is needed. Rinse

Ksju [112]

Answer:

storage solution , deionized water, stabilizes

Explanation:

A pH meter is a scientific device or instrument that is used to measure the pH of a given aqueous solution thereby determining the nature of the solution whether it is acidic or basic or neutral.

While using the pH meter or taking the measurement using the pH meter --

it should be kept in a storage solution for effective working.
Before using the device, it is rinsed with a deionized water and pat dry.
Record the measurements when the pH meter stabilizes.

7 0

3 years ago

A mixture of A and B is capable of being ignited only if the mole percent of A is 6 %. A mixture containing 9.0 mole% A in B flo

atroni [7]

Explanation:

As it is given that mixture (contains 9 mol % A and 91% B) and it is flowing at a rate of 800 kg/h.

Hence, calculate the molecular weight of the mixture as follows.

Weight = $0.09 \times 16.04 + 0.91 \times 29$

= 27.8336 g/mol

And, molar flow rate of air and mixture is calculated as follows.

$\frac{800}{27.8336}$

= 28.74 kmol/hr

Now, applying component balance as follows.

$0.09 \times 28.74 + 0 \times F_{B} = 0.06F_{p}$

$F_{p}$ = 43.11 kmol/hr

$F_{A} + F_{B} = F_{p}$

$F_{B}$ = 43.11 - 28.74

= 14.37 kmol/hr

So, mass flow rate of pure (B), is $F_{B}$ = $14.37 \times 29$

= 416.73 kg/hr

According to the product stream, 6 mol% A and 94 mol% B is there.

Molecular weight of product stream = $Mol. weight \times 43.11 kmol/hr$

= $0.06 \times 16.04 + 0.94 \times 29$

= 28.22 g/mol

Mass of product stream = 1216.67 kg/hr

Hence, mole of $O_{2}$ into the product stream is as follows.

$0.21 \times 0.94 \times 43.11$

= $8.5099 kmol/hr \times 329 g/mol$

= 272.31 kg/hr

Therefore, calculate the mass % of $O_{2}$ into the stream as follows.

$\frac{272.31}{1216.67} \times 100$

= 22.38%

Thus, we can conclude that the required flow rate of B is 272.31 kg/hr and the percent by mass of $O_{2}$ in the product gas is 22.38%.

4 0

3 years ago

Find the solution to the question

Evgesh-ka [11]

Answer:

Explanation:

FUN is not building block of matter.

4 0

2 years ago

The _______ force between each planet and the Sun keeps the planets in orbit around the Sun.

nata0808 [166]

The answer will be the gravitational force, because if we weren't in the gravity of the sun we would also be floating around with not much purpose.

8 0

3 years ago

Read 2 more answers