Wednesday
December 11, 2013

# Posts by Abraham

Total # Posts: 35

math
using rounding or compatible numbers,which numbers would you choose to estimate the exact product of 25 times 25.

Precalculus
solve the equations for x a) e^2x - e^x - 30 = 0 b)1-3/n^x = 5

pre algebra
13d = _ min

chemistry
1.write the balanced equation 2.find the number of moles of N2O 3.find the molar ratio 4.if the ratio is 1:1 than the number of moles for N2O and oxygen will of the same value 5.find the mass using n=m/MM 6. rearrage the equation to get m=n*MM and you will get the mass of oxyg...

Chemistry
Combustion analysis of 0.343 g of a compound containing C, H, and O produces 0.753 g of CO2 and 0.411 g of H2O. Mass spectral analysis shows that the compound has a molar mass around 120 g mol-1. What is the compound's: Empirical Formula:----- Molecular Formula:-----

Math
If a+b is less than c+d, and d+e is less than a+b than e is (1)less than c (3)less than d (2)equal to c (4)greater than d

history
What elementary school or high school did Paul Dunbar, the poet, go to?