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Arlecino [84]
3 years ago
13

Which are causes of mechanical weathering? Select three options.

Chemistry
1 answer:
Dvinal [7]3 years ago
6 0

Answer:

Plant growth , Carbon dioxide , pressure release

Explanation:

<em>because i took the test and  got it right</em>

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The heat of fusion for water is the amount of energy that must be absorbed for water to _____.
ivanzaharov [21]
I would say A.evaporate because the water is getting absorbed.

4 0
3 years ago
A solution has an initial concentration of 0.0100 m hclo (ka = 3.5×10−8 ) and 0.0300 m naclo. what is the ph after the addition
In-s [12.5K]
When [HClO]= 0.01 M  & [ClO]^- = 0.03M & NaOH = 0.003 mol and
 Ka = 3.5 x 10^-8 
and the equation is:
            HClO + NaOH → Na^+  + ClO^-
initial     0.01     0.003        0.03     0.03
            -0.003 - 0.003      +0.003  + 0.003
Final    0.007        0             0.033      0.033

We can get the PH from this formula:
PH = Pka + ㏒[conjugent base/weak acid]
PH = -㏒Ka + ㏒[Na]/[HClO]
      = - ㏒ 3.5x10^-8 + ㏒(0.033/0.007)
     = 8.13 
6 0
3 years ago
Help please the questions are confusing
SashulF [63]

Answer:

5- number of electrons=11

Explanation:

in a neutral atom number of protons=number of electrons which in this case=11

3 0
4 years ago
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Which of the following subshells can have a maximum of 2 electrons? <br> p<br> s<br> d<br> f
Alja [10]
It is the s-orbital because the order of electrons is s-block, p-block, d-block, and f-block. The p, d, and I think f as well (not 100% about f though) can each hold 8 more valence electrons in their shells. 
3 0
4 years ago
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AVprozaik [17]

Answer:

No, the puddle was formed because of the sun, because if there was snow and it rained then it would have turned slippery or icy

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3 years ago
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