CHEMISTRY HIGH SCHOOL

ICl has a higher boiling point than Br2. What is the best explanation for this?a.)Br2 experiences dipole0dipole interactions.
b.)ICl experiences dipole0dipole interactions.
c.)Br2 forms hydrogen bonds.
d.)ICl experiences induced dipole0induced dipole interactions.

Answers

Answer 1
Answer: The best answer is B. ICl experiences induced dipole-induced dipole interactions. Both iodine and chlorine belongs to the same group of the periodic table. Electronegativity decreases as you go down a group therefore Cl will have a greater attraction with the bond it forms with another atom. Dipole-dipole interactions form between I and Cl. For the Br2 molecule, no dipole occurs because they are two identical atoms. Therefore we will be expecting ICl will have a higher boiling point due to higher binding energy it forms.

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While testing amylase activity, John uses a buffer of pH 6 and substrate starch. He incubates them at 104ºF (40ºC). All the tubes show glucose formation, except one, which had no starch solution. Why did this happen?A) the optimum pH for enzyme amylase is not pH 6
B) the optimum temputure for the enzyme amylase is not 104. F (40.)
C) the substrate for amylase, starch, is not present

Answers

While testing amylase activity, John uses a buffer of pH 6 and substrate starch. He incubates them at 104ºF (40ºC). All the tubes show glucose formation, except one, which had no starch solution because  the substrate for amylase, starch, is not present so thats why it does not show glucose formation
so correct option is C
hope it helps

Answer:

c

Explanation:

If you have respiratory or heart problems, _____ can make it worse. carbon monoxide oxygen nitrogen sulfur oxide nitrogen oxide

Answers

If you have respiratory or heart problems, carbon monoxide can make it worse. This is because carbon monoxide is soluble in water and our body consists mostly of water. It can be toxic when dissolved in large amounts. 

Gabriella weighs 450 N. She climbs a flight of stairs to a height of 3 m. It takes her 5 seconds. How much work does Gabriella do when she climbs the stairs?A.
150 J

B.
270 J

C.
1350 J

D.
2250 J

Answers

The formula that can be applied in this problem is W = Fd where W is work, F is the force and d is distance. You have 450N and 3m, all you have to do is to multiply it.

W = Fd

W = (450N) (3m)

W = 1350J

The answer is letter C.

Which of the following is not true of "concentration"?a. It increases when you add more solute to the solvent.
b. It decreases when you add more solute to the solvent.
c. It decreases when you add more solvent to the solution.

Answers

The correct answer is B. The concentration of a solution does not decreases when you add more solute to the solvent. Instead, the concentration increases. Concentration is expressed as the amount of solute per unit of solvent. Therefore, increasing the solute, increases this value and increasing the solvent, decreases this value.

Hi can someone help me with this question!
First one to answer it I will make u brainliest

Answers

Answer:

Test 2

Explanation:

............................................

Answer:

(B) Test 2

Explanation:

The entire substance changed, and turned into a liquid.

Compounds put together will form -a. elements.
b. mixtures.
c. atoms.
d. pure substances.

Answers

The correct answer is B. Compounds put together will form mixtures because compounds itself are pure substances which contains elements and atoms. Mixtures is a system that is made up of two or more substances or compounds which are not combined chemically.
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