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Aloiza [94]
2 years ago
14

PLS HELP ME ON MY FINAL MULTIPLE CHOICE

Chemistry
2 answers:
Vladimir79 [104]2 years ago
8 0
The second one is correct
dexar [7]2 years ago
5 0

Answer:

The force would decrease

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Which ion does not have a noble gas configuration in its ground state?
goldfiish [28.3K]
I think the answer would be Ga3+
3 0
3 years ago
What fossil helped support Wegener's hypothesis of continental drift?
Dominik [7]

Answer:

Glossopteris

Explanation:

Glossopteris is a fossil fern that helped support Wegener's hypothesis.

Hope this helps! Have a great day!

3 0
3 years ago
A 13.1-g sample of CaCl2 is dissolved in 104 g of water, with both substances at 24.7°C. Calculate the final temperature of the
likoan [24]

Answer:

The final temperature of the solution is 44.8 °C

Explanation:

assuming no heat loss to the surroundings, all the heat of solution (due to the dissolving process) is absorbed by the same solution and therefore:

Q dis + Q sol = 0

Using tables , can be found that the heat of solution of CaCl2 at 25°C (≈24.7 °C)  is q dis= -83.3 KJ/mol . And the molecular weight is

M = 1*40 g/mol + 2* 35.45 g/mol = 110.9 g/mol

Q dis = q dis * n  = q dis * m/M =  -83.3 KJ/mol * 13.1 g/110.9 gr/mol = -9.84 KJ

Qdis= -9.84 KJ

Also Qsol = ms * Cs * (T - Ti)

therefore

ms * Cs * (T - Ti) + Qdis = 0

T=  Ti - Qdis * (ms * Cs )^-1   =24.7 °C - (-9.84 KJ/mol)/[(104 g + 13.1 g)* 4.18 J/g°C] *1000 J/KJ

T= 44.8 °C

7 0
3 years ago
15 points?
11111nata11111 [884]

Answer:

D. the organism is able to survive and reproduce more than others in it's environment

Explanation:

It will only go extinct if it can't survive or reproduce.

3 0
3 years ago
Read 2 more answers
An aqueous solution at 25.0°C contains [H+] = 0.075 M. What is the pH of the solution?
olasank [31]

Answer:

1.131

Explanation:

pH=-logH^+

H^+=0.074

pH=-log 0.074

pH=1.131

7 0
3 years ago
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