Cohesion is the tendency for the same type of molecules to stick together. TRUE or FALSE

Answers

Answer 1
Answer: true

cohesion is the tendency for the same type of molecules to stick together!

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What is the main product of the calvin cycle?

Answers

glucose
Hope this helps

Compounds are formed when the atoms of two or more elements are chemically combined.What type of bond is formed if atoms donate electrons to other atoms when the elements are combined?

A. ionic bond
B. hydrogen bond
C. covalent bond

Answers

Fully donating an electron results in an ionic bond, so A is the correct answer.

In comparison, B, a hydrogen bond, is a bond that forms between an H in one compound and an O, N, or F in another.  It is among the strongest of intermolecular forces, while ionic/covalent bonds are intramolecular.

C, a covalent bond, is a bond that forms when atoms share electrons instead of donating them.

What is inferring means in science

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It means to conclude information from evidence and reasoning rather than from statements.

How many molecules of glucose are in a 2.0 mL of a 1.02 mM solution of glucose

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One way of expressing concentration is by molarity. It is the amount of solute per unit volume of the solution. Usually, it takes the unit mol/L. The calculation for this problem is as follows:

1.02 mM = (1.02 mol / mL) (2.0 mL) = 2.04 mol

Thus, the solution has 2.04 mol of glucose.

In clinical brachytherapy, the supervision of radio elements and dose interpretation are performed by the therapeutic ____________________ (two words).

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Answer:

Radiation oncologist.

Explanation:

Cancer is one of the most deadly disease and half of the world population died due to cancer every year. Cancer might occur due to the mutation in the genes that control the cell cycle.

The oncologist may be defined as the individual that has specialized in the cancer and its treatment. The different radiation might use to kill the cancerous cell and the radio elements are administered in the drugs used during the chemotherapy.

Thus, the answer is radiation oncologist.

If 20 atoms of aluminum react with 45 molecules of chlorine gas, which reactant is limiting and how many more atoms/molecules would be required to use up all the reactants?

Answers

Explanation:

2Al+3Cl_2\rightarrow 2AlCl_3

According to reaction, 2 atoms of aluminum gas reacts with 3 molecules of chlorine gas.

Then 20 atoms of aluminum will react with :

(3)/(2)* 20=30 molecules of chlorine

Aluminum is a limiting reagent.

Molecules of chlorine left unreacted: 45 - 30  molecules = 15 molecules

Then 15 molecules of chlorine gas will react with :

(2)/(3)* 15=10 atoms of aluminum

10 more atoms of aluminum will required to use up all chlorine.

Al:ch2 an molar ratio.

2:3 and an x. X is 30.  20/2 = 10 so an answer is 

45/3 = 15. Both ratios are used 

45 - 30 = 15 CL2 left.

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