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professor190 [17]
3 years ago
14

I need help with these two questions please

Mathematics
1 answer:
fomenos3 years ago
8 0
Bshshshdhdhhdhdhdbdhhdhdhdhdhdhhdbdbdbdbsb
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C2d3 has a solubility product constant of 9.14×10−9. what is the molar solubility of c2d3?
UkoKoshka [18]
The correct answer for the question that is being presented above is this one:

We need to express the ksp expression of C2D3
<span>C2D3
= (2x)2(3x)3
= 108x5 </span>

<span>Then set that equation equal to your solubility constant </span>

<span>9.14x10-9 = 108x5 </span>
<span>x = 9.67x10-3 
</span>
<span>So the molar solubility is 9.67x10-3</span>
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3 years ago
Which Angles are Congruent?
konstantin123 [22]

Answer:

Angle b

Step-by-step explanation:

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3 years ago
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An element with mass 780 grams decays by 17.1% per minute. How much of the element is remaining after 19 minutes to the nearest
Anit [1.1K]
Step 1
Formulate a recursive sequence modeling the number of grams after n  minutes.
we have that
100%-17.1%-------------- > 82.9%------------> 0.829

a(n) = 780*[0.829<span>^n]
</span>
for n=19 minutes
a(19)=780*[0.829^(19)]=22.1121 g---------------> 22.1 g

the answer is 22.1 g
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3 years ago
For what value of x must ABCD be a parallelogram? asap please!!
pochemuha
Parallelogram so
CD = AB
18x - 5 = 15x + 4
3x = 9
  x = 3

answer
x = 3
3 0
3 years ago
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Answer:

24 is your answer

Step-by-step explanation:

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