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For this you need the atomic (molecular) mass of CaH2. Take the number of moles and multiply it by the Atomic Mass. Divide by one mole for units to cancel. CaH2=42.1 grams
1.72 moles CaH2 × (42.1 grams) =72.4 grams CaH2
To do this, you need to know the atomic weight of the element you're dealing with, found on any Periodic Table. The atomic weight is the mass in grams of the element in one mole - this will provide you with a conversion factor. So take the measurement in moles and multiply it by the atomic weight to convert to grams. Really what you're doing is dividing the number by 1 mole, and multiplying it by the equivalent of one mole, the atomic weight. That's the thought process behind unit analysis and how you get your "units to cancel".
In this case, the answer is about 328.26 grams Ca.
The molar mass of Ca is approximately 40.08 g/mol. Multiply the number of moles (8.23 mol) by the molar mass (40.08 g/mol) to get the mass in grams: 8.23 mol * 40.08 g/mol = 329.84 grams of Ca.
Accroding to the periodic table, calcium has 40.1g/mol, so 40.1x8.23=330g.
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How many grams are there in .761 moles of Ca?
For this you need the atomic mass of Ca. Take the number of moles and multiply it by the atomic mass. Divide by one mole for units to cancel. Ca= 40.1 grams.761 moles Ca × (40.1 grams) = 30.5 grams Ca
How many moles of calcium is 126g of ca?
To find the number of moles in 126g of calcium, divide the given mass by the molar mass of calcium (40.08 g/mol). 126g Ca / 40.08 g/mol = 3.14 moles of Ca.
How many moles of calcium are there in 77.4 grams of Ca?
To find the number of moles, you need to divide the given mass of calcium by its molar mass. The molar mass of calcium (Ca) is approximately 40.08 g/mol. Number of moles = 77.4 g / 40.08 g/mol ≈ 1.93 moles.
How many grams of ca(no3) are needed to make a 250 ml of 0.50M solution?
To calculate the amount of Ca(NO3)2 needed for a 0.50M solution: Find the molar mass of Ca(NO3)2 = 164.09 g/mol. Calculate the number of moles needed: 0.50 moles/L x 0.250 L = 0.125 moles. Convert moles to grams: 0.125 moles x 164.09 g/mol ≈ 20.51 grams of Ca(NO3)2 are needed.
Empirical formula for a compound that contains 32.2 percent Ca and 67.8 percent N by mass?
The empirical formula for the compound is CaN2. This is determined by converting the percentages to moles, dividing by the smallest mole count, and then rounding to the nearest whole number to get the subscripts.
How many grams are there in .761 moles of Ca?
For this you need the atomic mass of Ca. Take the number of moles and multiply it by the atomic mass. Divide by one mole for units to cancel. Ca= 40.1 grams.761 moles Ca × (40.1 grams) = 30.5 grams Ca
How many grams are in .07 moles of Ca?
By definition, one mole would be the same as the atomic mass. You take the number of moles and multiply it by the atomic mass. So if you have just 1 mole, the number of grams will be the atomic mass. Calcium's atomic mass is 40.08 grams.
How many moles are in forty grams of calcium?
For this you need the atomic mass of Ca. Take the number of grams and divide it by the atomic mass. Multiply by one mole for units to cancel.40.0 grams Ca / (40.08 grams) = .998 moles Ca
How many moles of calcium is 126g of ca?
To find the number of moles in 126g of calcium, divide the given mass by the molar mass of calcium (40.08 g/mol). 126g Ca / 40.08 g/mol = 3.14 moles of Ca.
What is the mass of 3.61 moles of Ca?
Well, darling, the molar mass of calcium (Ca) is approximately 40.08 g/mol. So, if you have 3.61 moles of Ca, you just need to multiply the molar mass by the number of moles to find the mass. In this case, 3.61 moles of Ca would have a mass of around 144.88 grams. Hope that clears things up for you, sugar!
Calculate the mass in grams of 2.5 moles in calcium carbonate?
The molar mass of CaCO3 (calcium carbonate) is 100.09 g/mol. To convert moles to grams, multiply the number of moles by the molar mass. Therefore, the mass of 2.5 moles of calcium carbonate is 250.225 grams.
How many moles of calcium are there in 77.4 grams of Ca?
To find the number of moles, you need to divide the given mass of calcium by its molar mass. The molar mass of calcium (Ca) is approximately 40.08 g/mol. Number of moles = 77.4 g / 40.08 g/mol ≈ 1.93 moles.
How many moles of calcium ca atoms are in 98.5 g of ca?
To determine the number of moles of calcium atoms in 98.5 g of Ca, you need to first calculate the molar mass of Ca (40.08 g/mol). Then, divide the given mass by the molar mass to get the number of moles. So, 98.5 g of Ca is equal to 98.5 g / 40.08 g/mol ≈ 2.46 moles of Ca atoms.
How many moles of calcium are in 5000 grams of calcium?
To find the number of moles in 5000 grams of calcium, you need to divide the given mass by the molar mass of calcium. The molar mass of calcium is approximately 40.08 g/mol. So, 5000 grams of calcium is equal to 5000/40.08 = 124.69 moles of calcium.
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 moles of atoms are in 500.00 mg of calcium?
To find the number of moles of calcium atoms in 500.00 mg, first calculate the molar mass of calcium (40.08 g/mol). Then, convert 500 mg to grams (0.500 g). Next, use the formula: moles = mass / molar mass to find that there are 0.0125 moles of calcium atoms in 500.00 mg.
How many grams of ca(no3) are needed to make a 250 ml of 0.50M solution?
To calculate the amount of Ca(NO3)2 needed for a 0.50M solution: Find the molar mass of Ca(NO3)2 = 164.09 g/mol. Calculate the number of moles needed: 0.50 moles/L x 0.250 L = 0.125 moles. Convert moles to grams: 0.125 moles x 164.09 g/mol ≈ 20.51 grams of Ca(NO3)2 are needed.
