1. Find the molar mass (MM) of the substances.
MM FeSO4 = 151.91g
+MM 7H2O = 126.11g
MM FeSO4 x 7H2O = 278.02g
2. Find the percent water of hydrate.
Divide the mass of water by the mass of the hydrate; multiply result by 100%.
126.11g
278.02g x 100%
Percent water of FeSO4 * 7H2O is 45.36%.
Finding Molar Mass
# atoms Element A x Atomic Mass Element A = Mass A
# atoms Element B x atomic mass Element B = Mass B
... etc.
Add up all the mass values for the substance and you have the molar mass of the substance.
See the Related Questions link to find out how to calculate the answer!
[.3%] of [5L] = [0.3/100]*[5000 gram]= 15 g P.A.A
Out of all the water on Earth, only 2.75 percent is fresh water, including 2.05 percent frozen in glaciers, 0.68 percent as groundwater and 0.011 percent of it as surface water in lakes and rivers.
500g
The percentage of the plant that is covered with water is 70 percent.
Your body is somewhere between 55 and 73% of your body weight.
Formula to calculate the ratio
To calculate 5.72 percent of 2084.52 you have to multiply 2084.52 by 0.0572!
To calculate 7900 percent of 8000, calculate (7900 / 100) x 8000.
Calculate it!
To calculate the Percent to Plan, you can first substitute the variable X for the percent and the variable Y for the Plan, and then you can solve for the end rate of percent to plan easily.
To calculate 0.760 percent of a number x, multiply x by 0.76 and divide by 100.
To prepare a 0.9% solution take 0.9grams NaCl and dilute with 100mls of water.
A. Calculate 10 percent of 35 or 35.00010% of 35.000= 10% * 35.000= 0.10 * 35.000= 3.5B. Calculate 10 percent of 35,00010% of 35,000= 10% * 35,000= 0.10 * 35,000= 3,500
To calculate 25 percent of a value, multiply the value by 0.25. For example, 25 percent of 130 is equal to 130 x 0.25 = 32.5.
0,06
To calculate ten percent of a value, multiply the value by 0.1. For example, ten percent of 75 is equal to 75 x 0.1 = 7.5.