CHEMISTRY HIGH SCHOOL

How many moles are there in 77.1 g of cl2?

Answers

Answer 1
Answer:

According to the mole concept, there are 1.8074 moles in 77.1 g of chlorine.

What is a mole?

Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.

It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.

It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Number of moles is calculated as, mass/molar mass

Substituting values in formula gives, number of moles=77.1/70.90=1.8074

Thus, there are 1.8074 moles in 77.1 g of Cl₂.

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Answer 2
Answer: There are 70.90g of Cl2 in 1 mol (because 35.45g Cl in one mol). So 77.1g/70.9g≈1.0874 mol.

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What is the answer to this one?

Answers

maybe number 2. 20 hope that helps

(adapted)According to this passage, those who adopted this
pledge believed that
(1) religion had no place in national politics
(2) Congress should repeal Prohibition
(3) alcohol consumption was damaging to society
(4) only the government can solve social
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Answers

According to this passage, those who adopted this pledge believed that alcohol consumption was damaging to society. The answer is number 3.

Help with chemistry, Ill give brainliest to whoever can helpThe mass number of an isotope of uranium is 238, and its atomic number is 92. Which symbol best represents this isotope of uranium?

(ignore the answer i chose, i just guessed)

Answers

I think your guess is correct

Once released, acetylcholine is degraded by extracellular enzymes into what product(s)?A) acetate + choline
B) acetyl CoA + choline
C) methylcholine + acetate
D) choline only
E) acetate only

Answers

Final Answer:

Once released, acetylcholine is degraded by extracellular enzymes into acetate + choline. Option A is the correct answer.

Explanation:

Acetylcholine (ACh) is a neurotransmitter responsible for transmitting signals across synapses in the nervous system. Once it is released into the synaptic cleft, acetylcholine is rapidly broken down by the enzyme acetylcholinesterase (AChE). The enzymatic degradation of acetylcholine by AChE results in the hydrolysis of the acetyl group, leading to the formation of acetate and choline.

Acetate is a small molecule that is easily cleared from the synaptic cleft, while choline can be taken up by the presynaptic neuron to be reused for the synthesis of new acetylcholine molecules. This degradation process is essential for terminating the signal transmission and preventing continuous stimulation of the postsynapticneuron.

Option A is the correct answer.

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It’s acetate + choline

You spot a friend walking on a moving walkway in an airport. You are not on the walkway and you want to keep up with her.At what speed do you need to walk?

A. the speed of the walkway multiplied by the speed at which she is walking

B. the speed of the walkway minus the speed at which she is walking

C. the speed of the walkway plus the speed at which she is walking

Answers

I think the answer is A.

A. the speed of the walkway multiplied by the speed at which she is walking

The speed she is walking accelerates her speed by the base speed of the walkway.

Answer:

The answer is C. the speed of the walkway plus the speed at which she is walking

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Answers

C greater than because anthing basic is 8 or up
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