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raketka [301]
3 years ago
13

Evolution means..... exchanges gradual development transcription differentiation​

Chemistry
2 answers:
kupik [55]3 years ago
8 0

Answer:

mark me as a brainlist answer i hope it will help you

Explanation:

Evolution means Gradual Development. It is a procedure in the gradual development in which species of different animal's, plants etc... leisurely started to change some of their activities or elements and it changes only due to some situations it changes over many generations also.

madam [21]3 years ago
4 0

Explanation:

Evolution means Gradual Development. It is a procedure in the gradual development in which species of different animal's, plants etc... leisurely started to change some of their activities or elements and it changes only due to some situations it changes over many generations also.

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If you feed 100 kg of N2 gas and 100 kg of H2 gas into a<br> reactor. What is the excess reactant?
Grace [21]

Answer:

H₂ gas

Explanation:

The reaction between nitrogen gas and hydrogen gas forms ammonia (the Haber-Bosch process):

N₂ + 3H₂ ⇒ 2NH₃

The excess reactant can be found by comparing the moles of nitrogen and hydrogen. The molar mass of N₂ is 28.00 g/mol and the molar mass of H₂ is 2.02 g/mol.

(100 kg N₂)(1000g/kg)(mol/28.00g) = 3570 mol

(100 kg H₂)(1000g/kg)(mol/2.02g) = 49500 mol

The molar ratio between the reactant N₂ and H₂ is 1N₂:3H₂. The moles of nitrogen required to react with H₂ is:

(49500 mol H₂)(1N₂ / 3H₂) = 16500 mol

The amount of nitrogen required is more than what is available, so nitrogen is the limiting reagent and hydrogen is the excess reagent.

3 0
3 years ago
Explain how carbon monoxide can cause death
Anvisha [2.4K]

Answer:

Carbon monoxide is not breathable.

Explanation:

If you breath in Carbon monoxide you'll first pass out from the lack of Oxygen. If Oxygen does not reach your lungs in time death will occur from suffocation.

4 0
3 years ago
How is stoichiometry used to calculate energy released when a mass of liquid freezes?
kati45 [8]

Answer:

D. Grams liquid x mol/g x delta Hf​reezing

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to reason that the stoichiometry used to calculate energy released when a mass of liquid freezes, involves the grams of the liquid, the molar mass of the liquid, as given in all the group choices, and the enthalpy of freezing because that is the process whereby a liquid goes solid.

In such a way, we infer that the correct factor would be D. Grams liquid x mol/g x delta Hf​reezing which sometimes is the negative of the enthalpy of fusion as they are contrary processes.

Regards!

6 0
3 years ago
Read 2 more answers
Can someone help please I will give Brainlyiest
kotykmax [81]

Answer:

See Explanation

Explanation:

moles of NH₃ = 11.9g/17.03 g/mol = 0.699 mole

moles of CN₂OH₄ = 1/2(0.699) mole =0.349 mole

Theoretical yield of CN₂OH₄ = (0.349 mole)(60 g/mole) = 20.963 grams

%Yield = Actual Yield/Theoretical Yield x 100%

= 18.5g/20.963g x 100% = 88.25%

7 0
3 years ago
Read 2 more answers
What is the meaning of barren in this sentence?
JulsSmile [24]

Having little vegetation

Dry and lifeless

Completely empty

5 0
3 years ago
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