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How many moles of lithium hydroxide are required to react with 20 mol of CO2?
40 moles of LiOH
How many moles of sodium hydroxide are in 40 grams of sodium hydroxide?
1
How many grams of sodium hydroxide are there in 0.150 mol?
The molecular weight of sodium hydroxide is 40. Therefore 0.150 moles would be 40 x 0.15 = 6g.
How many moles are there in 23 grams of sodium?
First of all, we should know what a mole and molar mass of an element means. Then answering this question would be easy. Mole is a number( like pi, 1, 2, etc.). It is approximately 6.0225 *1023 . 1 mole of anything is same as the number of atoms in 12 grams of Carbon C12 sample. The mass of mole of an element/compound is called it's molar mass expressed in grams. The molar mass of a monoatomic element is equal to it's mass number. So, we know Ca's mass number = 40. that means 1 mole of Ca weighs 40 grams. =>1/40 mole of Ca weighs 1 gram. =>(1/40)*23 moles of Ca weighs 23.0 gram. =>0.575 moles of Ca weighs 23.0 gram. So there are 0.575 moles of Ca atoms in 23.0g of Ca
How many atoms are in 125 grams of Calcium?
Well, Ca has an atomic mass of 40, so one mole of Ca (6.022x1023 atoms) equals 40g.To get 5kg of Ca, you would times the 40g (one mole) by 125.5kg of Ca has 125x(6.022x1023), or602200000000000000000000 atoms.
How many moles of hydrogen atoms does 5 moles of propane molecules contain?
Since propane has the formula C3H8, each mole of propane will have 8 moles of hydrogen atoms, so 5 moles of propane will contain 5x8=40 moles of hydrogen.
How many atoms are in 131 grams of calcium?
There are 3.275 moles of calcium in 131 grams as relative atomic mass of calcium is 40. Therefore there are 1.972 x 1024 atoms.
How many moles of calcium atoms are in 45.8 g of Ca?
1mol Ca = 40 gCa 45.8g/40g = 1.145 mol Ca
How many moles of calcium are in a sample of 40 g?
.998 moles
How many atoms are in 169 g of calcium?
First calculate the moles of Calcium Moles(Ca) = 169g/ 40 (Atomic Mass) moles(Ca) = 4.225 moles. Remember the Avogdro No. which is the number of ato,ms/molecules in one mole. Hence 6.022 x 10^*23) = 1 mole. We have 4.225 moles So multiplying 4.225 X 6.022 x 10^(23) = 2.54 x 10^(24) atoms)
How many moles are in each what 80.0g of NaOH?
2 moles 80/40= 2
Cyclopentane has the molecular formula C5H10 How many moles of hydrogen atoms are there in 4 moles of cyclopentane?
The conversion. 4 mol C5H10 ( 10 mol H/1 mol C5H10 ) = 40 mol Hydrogen.
How many moles of lithium hydroxide are required to react with 20 mol of CO2?
40 moles of LiOH
How many hydrogen atoms are in a cup of milk?
potassium-40 atoms
How many moles are in 3.75 grams of calcium?
0.09375 moles. Calcium's molar mass is 40, so mass/molar mass (3.75/40) gives 0.09375.
How many moles of carbon and hydrogen are there in 5 moles of octane?
Balanced equation. 2C8H18 + 25O2 -> 16CO2 + 18H2O 5.5 moles C8H18 (25 moles O2/2 moles C8H18) = 68.75 moles O2 needed
What is the mass in milligrams of 4.11x1019 calcium atoms?
HI!So, as there are 6.02x1023 atoms in a mole, and you have 4.11x1019 calcium atoms, that's4.11x1019 /6.02x1023, which gives you 0.000068272 moles of calcium. Calcium has a Relative Atomic Mass (a.k.a. Mass Number) of ~40.RAM x number of moles = Mass (grams)Therefore 40 x0.000068272 = 0.00273088 gramsAs there are 1000milligrams in 1 gram, that's0.00273088 grams x 1000, which is 2.73088mg.I hope this helps!
