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gtnhenbr [62]
3 years ago
7

30 POINTS!which FIVE statements are correct about PHOTOSYNTHESIS?

Chemistry
2 answers:
Vanyuwa [196]3 years ago
8 0

Answer:

A,B,C,E,H,J

Explanation:

Hatshy [7]3 years ago
5 0

Answer:

the answers are b, c, e, h, and j

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just olya [345]

Answer:

12, 28, 16

Explanation:

If we are trying to find mass, neutrons are our guy. 28 "mass points" means 28 neutrons. Each neutron is one point

We know there are 12 protons and electrons if we look at a table of elements, the number in the top-left is always the number of protons and we can subtract mass from the protons to get our electrons

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3 years ago
Elements in the same period have _____.
faust18 [17]

Ans: Elements in the same period have the same number of electron shells.

4 0
2 years ago
Read 2 more answers
Calculate the pOH of a solution if the concentration of hydroxide ions (OH-) is 1.9 x 10-5M?
OLEGan [10]

Answer:

9.28

Explanation:

pOH refers to a measure of hydroxide ions concentration. pOH tells about the alkalinity of a solution. If pOH is less than 7 then aqueous solutions are alkaline, acidic if pOH is greater than 7 and neutral if pOH is equal to 7.

Concentration of the hydroxide ions = 1.9 x 10-5 M

pH = -log(1.9\times 10^{-5})=4.72

pOH = 14 - pH

=14 - 4.72 = 9.28

6 0
3 years ago
You are making a 0.2M solution of sodium acetate in the lab. Sodium acetate has a molecular mass of 82.03 g/mol. How many g of s
lyudmila [28]

Answer: The answer can be found on CHEG

Explanation:

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3 years ago
What is a characteristic that can be observed or measured without changing the chemical makeup of a substance? *
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The correct answer is B
4 0
3 years ago
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