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Taya2010 [7]
3 years ago
13

Choose the correct answer from the options given.

Chemistry
1 answer:
Pavel [41]3 years ago
4 0

Answer: 1 part is sulfuric acid is a catalyst

2 part is vanadium (V) oxide is a catalyst

Explanation:

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The maximum number of trees that can be grown in an area and have all of the resources they need to survive is the forest's ____
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growth limit for trees

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the awnser is the growth limit for trees

6 0
2 years ago
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Svetach [21]
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7 0
3 years ago
How many total atoms are there in one molecule of C145H293O168?
nasty-shy [4]

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4 0
2 years ago
What is the ph of a solution of 0.550 m k2hpo4, potassium hydrogen phosphate?
Solnce55 [7]
We assume that we have Ka= 4.2x10^-13 (missing in the question)
and when we have this equation:
H2PO4 (-) → H+  + HPO4-
and form the Ka equation we can get [H+]:
Ka= [H+] [HPO4-] / [H2PO4] and we have Ka= 4.2x10^-13 & [H2PO4-] = 0.55m
by substitution:
4.2x10^-13 = (z)(z)/ 0.55
z^2 = 2.31x 10^-13
z= 4.81x10^-7
∴[H+] = 4.81x10^-7
when PH equation is:

PH= -㏒[H+]
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3 0
3 years ago
Is this a physical or chemical change?? please help ASAP!!!
Leona [35]

Answer:

chemical

Explanation:

It is breaking down the molecules. That's chemistry

5 0
3 years ago
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