Answer:
40/27
Step-by-step explanation:
convert mixed number into improper fraction
4/3×2/3×5×1/3
calculate the product
40/27
0, 1/3, 2/3, 1, 1 1/3, 1 2/3, 2
<span>Answer:
MgF2 ====⇒ Mg+2 + 2F-
Ksp = [Mg+2][F-]^2
Let S = molar solubility of MgF2
[Mg+2] = S ; [F-] = 2s
Since the [F-] is initially 0.40 M, then [F-] = 0.40 + 2S
6.4 x 10^-9 = (S) (0.40 + 2S)^2 ; one can neglect the 2S in the 0.40 + 2S expression since it is very, very small compared to the 0.40 already present.
6.4 x 10^-9 = S(0.40)^2
S = 4.0 x 10^-8
Molar solubility = 4.0 x 10^-8</span>
Answer:
Area of circle = π r ^ 2
= 3.14 × ( 42) ^ 2
= 5538.96 in^2
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Answer:
y=29x+50; 30 months
Step-by-step explanation:
$920-50=870
870/29=30