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Charra [1.4K]
3 years ago
11

Which of the following correctly describe insulin and glucagon? select all that apply.

Chemistry
1 answer:
Shkiper50 [21]3 years ago
6 0

The correct answers are 1 and 4.<span>
1. Both are hormones that control glucose production and storage in the body.
2. Insulin and glucagon have opposite effects on blood glucose level.

<span>Both hormones are secreted by the pancreas. Pancreas has 2 cells as alpha and beta. alpha cells produce glucagon and beta cell produce insulin. Insulin is responsible for decreasing blood glucose level and glucagon is responsible for increasing blood glucose level. Hence, both hormones have opposite effects on blood glucose level and they help to maintain blood glucose level.</span></span>

<span> </span>

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Given the following reaction and data, A + B → Products
natima [27]

Answer:

a. Rate = k×[A]

b. k = 0.213s⁻¹

Explanation:

a. When you are studying the kinetics of a reaction such as:

A + B → Products.

General rate law must be like:

Rate = k×[A]ᵃ[B]ᵇ

You must make experiments change initial concentrations of A and B trying to find k, a and b parameters.

If you see experiments 1 and 3, concentration of A is doubled and the Rate of the reaction is doubled to. That means a = 1

Rate = k×[A]¹[B]ᵇ

In experiment 1 and to the concentration of B change from 1.50M to 2.50M but rate maintains the same. That is only possible if b = 0. (The kinetics of the reaction is indepent to [B]

Rate = k×[A][B]⁰

<h3>Rate = k×[A]</h3>

b. Replacing with values of experiment 1 (You can do the same with experiment 3 obtaining the same) k is:

Rate = k×[A]

0.320M/s = k×[1.50M]

<h3>k = 0.213s⁻¹</h3>

6 0
3 years ago
Describe how an ion is made​
koban [17]
Ions are formed by the addition of electrons to, or the removal of electrons from, neutral atoms or molecules or other ions; by combination of ions with other particles; or by rupture of a covalent bond between two atoms
6 0
3 years ago
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How many hydrogen atoms are in 8.80 mol of ammonium sulfide
vladimir1956 [14]
Assuming that the ammonium sulfide formula is (NH4)2S then you can see that there are 2 nitrogen, 8 hydrogen and 2 sulfur atoms for every ammonium sulfide. If the amount of ammonium sulfide is 8.9 moles, then the number of hydrogen atoms should be: 8/1 * 8.9 mol= 71.2 moles
6 0
3 years ago
An experiment applies heat to a substance and produces a gas that is a new and different substance. Choose the true statement.
sergejj [24]
Im a bit torn here, lets look at the definitions of physical and chemical changes:
physical change changes only the phase/state of a substance, but not what the substance is
chemical change is a chemical reaction where a new substance is formed and energy is given off or absorbed.
(it just started raining and it smells really nice out my window)

clearly, this cannot be just a physical reaction. i think i would be inclined to pick B. but C. could have merit as an answer too. sorry for the ambiguity x
7 0
3 years ago
Mrs. Jacobson is pushing a fridge to the right with a force of 100 N. The force pushing it
alex41 [277]

Answer:

A

Explanation:

Let's illustrate this; see the attachment.

We see that Mrs. Jacobson is pushing to the right with a force of 100 N and there is another opposite force pushing with a force of 15 N. Since these are in opposite directions, we can say that the force opposite to Mrs. Jacobson is pushing the fridge -15 N to the right (instead of 15 N to the left).

The net force would then be:

100 N + (-15 N) = 85 N to the right

The answer is A.

8 0
3 years ago
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