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4 g of helium is equivalent to 1 mole of helium
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoWiki User
∙ 11y ago4 g of He is 1 mole of He.
So, 4.8 g of He will be 1.2 moles
Wiki User
∙ 10y agoMoles = weight in g / atomic weight
So, moles in 40 g of He = 40 / 4 = 10 moles.
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How many grams of of NaOH are required to prepare 200 mL of a 0.450 M solution?
Molarity = moles of solute/volume of solution 0.450 M = m/200ml = 90 millimoles, or, what we need; 0.09 moles 0.09 moles NaOH (39.998 grams NaOH/1 mole NaOH) = 3.60 grams of NaOH needed
How do you find the mol of Ca 50g?
Calcium is 40g per mole (according to the periodic table,) so 50/40=1.25 moles.
Suppose you want to heat 40g of water by 20c how many joules of heat are required?
334.8 Joules
What is the molarity of Na OH solution?
One mole of NaOH is 40g. So 40g dissolved in 1 litre will give a 1M solution.
Is a dessert spoon the same as 40g?
No, it is not the same.
How many moles of calcium are in a sample of 40g?
Since the gram atomic mass of calcium is 40.08 and calcium does not form polyatomic molecules, the number of moles in 40g of calcium is 1.0, to the justified number of significant digits.
How many moles of calcium oxide are produced when 36.5 grams of calcium reacts completely with oxygen gas?
2Ca + O2 --> 2CaO The molar mass of Calcium is 40g/mol. 36.5g/40g gives you 0.9125 moles of Calcium. The moles of calcium are equivalent to the moles of Calcium oxide. The answer is 0.9125 moles of calcium oxide. Correct me if I am wrong.
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 millimoles are in 12g of sodium hydroxide?
The molecular weight of sodium hydroxide is 40g/mol. To get the amount of moles, you have to divide the weight by molecular mass. 12g / 40 is 0.3 moles. This is 300 millimoles.
How many grams of solid sodium hydroxide would need to be added to completely neutralize 35.0 mL of 1.45 M HBr?
This is a titration question: we want to have the same number of hydroxide ions as hydroxide ions so that they will form water and the pH will be neutral. In chemistry, we count atoms and molecules in moles, and we can calculate how many moles of HBr we have, because concentration in molarity is the number of moles divided by the volume in liters... M = moles/V. We plug in what we got: 1.45M = moles/0.0350L, and solve for moles: 0.0508 moles. Now we know we need 0.0508 moles of NaOH, whose molecular weight is 40g/mole. MW x moles = grams, so (40g/mole)(0.0508 moles) = 2.03 g of NaOH.
How many grams of of NaOH are required to prepare 200 mL of a 0.450 M solution?
Molarity = moles of solute/volume of solution 0.450 M = m/200ml = 90 millimoles, or, what we need; 0.09 moles 0.09 moles NaOH (39.998 grams NaOH/1 mole NaOH) = 3.60 grams of NaOH needed
How many calories are in Takis?
40g
How many oz are there in 40 grams?
40g = 1.41oz
How many cups is 40g of milk?
That is 0.176 cup
40 grams equals how many cups?
How many grams of NaOH are required to prepare 200 ml of a 0.450 M solution?
First you have to find the molar mass of NaOH which is, 23+16+1=40g/mol. Then you take 0.450M X 200mL=90 mM. which can be converted to .090 moles just move the decimal three decimal places. Then you take you molar mass which is 40g/mol X .090moles= 3.6grams. (The moles cancelled themselves out and your left with grams.) Pretty easy once you practice more problems.
What is 85 percent of 40g?
85% of 40g is 34g
