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Marina86 [1]
2 years ago
15

I NEED HELP WITH 1-4 PLEASE ASAP!!!

Chemistry
1 answer:
Varvara68 [4.7K]2 years ago
5 0

Answer:

1 is the same    3 is pure substance 4 is different

Explanation:

not sure about 2

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This is true for the body being attracted as well. Bodies of water that are smaller than oceans, seas, and large lakes are _____
zhannawk [14.2K]

Answer:

:)  

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Explanation:

4 0
2 years ago
Determine the [H3O+] in a 0.265 M HClO solution. The Ka of HClO is 2.9 × 10-8.
dexar [7]

8.8 × 10-5 M is the  [H3O+] concentration in 0.265 M HClO solution.

Explanation:

HClO is a weak acid and does not completely dissociate in water as ions.

the equation of dissociation can be written and ice table to be formed.

 HClO +H2O ⇒ ClO- + H3O+

I  0.265                0        0

C  -x                    +x     +x

E  0.265-x          +x      +x

Now applying the equation of Ka, where Ka is given as 2.9 × 10-8.

Ka = \frac{[ClO-][H3O+]}{[HClO]}

2.9 × 10^-8 = \frac{[x] [x]}{[0.265-x]}

x^{2} = 7.698 x10^{-9}

x = 8.8 × 10-5 M

The hydronium ion concentration is 8.8 × 10-5 M  in 0.265 M solution of HClO.

8 0
2 years ago
Water is heated to boiling and water vapor (steam) is released. Chemical change or physical change?
Vlad [161]
Physical because it is still H2O
6 0
3 years ago
Bases in solution produce what type of ions?
Natali [406]
Bases produce hydroxide ions, while acids produce hydrogen ions. 

Bases have a pH of above 7, and are bitter and slippery. 

Answer: <span>c. hydroxide ions</span>
4 0
2 years ago
Please help me #6!!!!!!!!
Vesnalui [34]
I believe that the answer is 12 because there is already 3 O molecules and since its in parentheses with 3 outside it that means that there are 3 of those CO molecules meaning that for every 1 CO there will be 3 O’s so 3, four times Is 12
3 0
3 years ago
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