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Lelu [443]
2 years ago
14

How many hydrogen atoms are in water, H2O? A) 1 B) 2 C) 3 D) 0

Chemistry
2 answers:
pishuonlain [190]2 years ago
8 0
There are two hydrogen atoms in one molecule of water.

The answer is B) 2
Sever21 [200]2 years ago
8 0
2 hydrogens in water
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Write a balanced overall reaction from these unbalanced half-reactions. ln->ln3+ cd2+->cd
DochEvi [55]
Oxidation reaction 
In ---> In³⁺ + 3e ---1)
reduction reaction
Cd²⁺ + 2e ---> Cd ---2)
when balancing the reactions, electrons have to be balanced. to balance the electrons multiple 1st reaction by 2 and 2nd reaction by 3
1) x 2
2) x 3
2In ---> 2In³⁺ + 6e
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add the 2 equations to obtain the overall reaction

2In + 3Cd²⁺ ---> 2In³⁺ + 3Cd
5 0
3 years ago
Why is it important for the pH of blood to remain constant
fenix001 [56]
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3 years ago
Write the equilibrium expression of each chemical equation.<br> 2H2S(g) 2H2(g) + S2(g)
hodyreva [135]

Answer:

<u>[H2]2[S2][H2S]2Kc=[H2]2[S2][H2S]2</u>

Explanation:

2H2S(g)⇋2H2(g)+S2(g)2H2S(g)⇋2H2(g)+S2(g)

The equilibrium constant expression in terms of concentrations is:

Kc=<u>[H2]2[S2][H2S]2Kc=[H2]2[S2][H2S]2</u><u>.</u>

6 0
2 years ago
HELP ASAP PLEASAE!!!
N76 [4]

I believe the answer is A. However, I would double check the formula.

4 0
3 years ago
If distance, d, is proportional to time, t, and at time t =2.00 seconds, the distance is 6.20 m, find the distance when t = 3.50
Allushta [10]
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Find 1/4th of 2.00 and add that to 6.2
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3 years ago
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