To find the number of moles we start by calculating the molar mass:
M(C2H5OH) = 2*M(C) + 6*M(H) + M(O)
M(C2H5OH) = 2* 12.01 + 6* 1.008 + 16
M(C2H5OH) = 46.068g
This is mass of one mole of ethanol. Total mass of ethanol can be calculated by using formula:
m = N * M
Where:
m = total mass
N = number of moles
M = molar mass
We rearrange formula for N:
N = m / M
N = 508 / 46.068
N = 11.03
508g of ethanol contains 11.03 moles.
Answer:
23x^2
Step-by-step explanation:
When adding variables, if they have the same exponent then all that needs to be done is add the constants. In this case both have x^2 so the answer is 23x^2. Hope this helps! :)
ANSWER
a)56
b)134
c)27
d)141
Answer:
sexo
Step-by-step explanation:
