Posts by Kyleigh

Total # Posts: 10

math
The difference between two numbers is 34. The larger exceeds 3 times the smaller by 4. Find the numbers.

math
65 cubic inches

physics
A rock is suspended by a light string. When the rock is in air, the tension in the string is 38.2 N. When the rock is totally immersed in water, the tension is 28.9 N. When the rock is totally immersed in an unknown liquid, the tension is 17.4 N. What is the density of the ...

math
.5x.6?

7th grade math
The answer is obviously 16.

physics
you take the inverse tan. So tan-1(1.8956)= 62.2

4th grade math
how can you explain the difference between 120-70 using mental math

Social Studies
How did the Pilgrims become friends with the Wampanoag?

Social Studies
Pilgrims

chem for Dr. Bob
First calculate the molarity (M) of each species. M H2 = moles H2 / L = 2.50 / 12.0 = 0.208 M M S2 = moles S2 / L = 1.35 x 10^-5 / 12.0 = 1.13 x 10^-6 M M H2S = moles H2S / L = 8.70 / 12.0 = 0.725 M Kc = [H2S]^2 / ([H2]^2[S2]) = (0.725^2) / ((0.208)^2(1.13 x 10^-6)) = 1.08 x 10^7

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