A molecular mass is found by adding all of the masses of the atoms for that molecule. In NaH2PO4, we have:
Na: 1 atom x 23amu/atom = 23
H: 2 atoms x 1.0 amu/atom = 2
P: 1 atom x 31amu/atom = 31
O: 4 atoms x 16amu/atom = 64
Add those together, and NaH2PO4 has a molecular mass of... 120.
H3PO4, or phosphoric acid, has a molecular weight of 98.00 grams per mole. It is 65.31 percent oxygen, 31.61 percent phosphorous and 3.08 percent hydrogen by mass.
When calculated exactly, it would be 97.9952 grams per mole.
The molar mass of phosphite ion is 79. The given compound has three protons attached to it. Therefore its gram molecular mass is 82g.
3 hydrogens = 3.024 grams
plus
1 phosphorous = 30.97 grams
plus
4 oxygens = 64.0 grams
total
= 97.994 grams/mole
The molecular weight of K2HPO4 is 174,2.
The molecular mass of Na3PO4 is 163.94 u.
Actually H3PO4 is a molecular formula referring to the compound we know as Phosphoric acid. It doesn't indicate number of moles of H3PO4. But the number of moles can be found out if the amount in mass or some other measurable quantity(e.g. conc. in solution) is given. The molar mass(mass of 1 mole) of H3PO4 is 98 grams. So if mass is given then it can be converted to grams and dividing by molar mass(i.e 98) we get number of moles. moles of H3PO4 =(mass of H3PO4 in grams)/98. 1 mole of H3PO4 has ->3 moles of H atoms. ->1 mole of P atoms. ->4 moles of O atoms. ( 1 mole=6.0225 *1023 units)
The formula for phosphoric acid is H3PO4; therefore, there are 8 atoms in each molecule of the acid.
H3PO4 + 1 OH- --> H2PO4- + 1 H2O H3PO4 + 2 OH- --> HPO42- + 2 H2O H3PO4 + 3 OH- --> PO43- + 3 H2O
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Actually H3PO4 is a molecular formula referring to the compound we know as Phosphoric acid. It doesn't indicate number of moles of H3PO4. But the number of moles can be found out if the amount in mass or some other measurable quantity(e.g. conc. in solution) is given. The molar mass(mass of 1 mole) of H3PO4 is 98 grams. So if mass is given then it can be converted to grams and dividing by molar mass(i.e 98) we get number of moles. moles of H3PO4 =(mass of H3PO4 in grams)/98. 1 mole of H3PO4 has ->3 moles of H atoms. ->1 mole of P atoms. ->4 moles of O atoms. ( 1 mole=6.0225 *1023 units)
To solve this problem, you will need to use the balanced chemical equation provided to determine the mole ratios between the reactants and products. First, convert the volume of H3PO4 to liters by dividing by 1000 mL/L: 750 mL H3PO4 / 1000 mL/L = 0.750 L H3PO4 Next, convert the concentration of H3PO4 to moles/L: 6.00 M H3PO4 = 6.00 mol/L H3PO4 Now, use the volume and concentration to calculate the number of moles of H3PO4: 0.750 L H3PO4 * 6.00 mol/L H3PO4 = 4.50 mol H3PO4 Since the chemical equation shows a 1:1 mole ratio between H3PO4 and Ca(OH)2, there must be 4.50 mol Ca(OH)2 as well. To determine the mass of each product, you will need to know the molar masses of each compound. The molar mass of H3PO4 is 98.00 g/mol, and the molar mass of Ca(PO4)2 is 212.09 g/mol. Therefore, the mass of H3PO4 produced in the reaction is: 4.50 mol H3PO4 * 98.00 g/mol = 434.00 g H3PO4 And the mass of Ca(PO4)2 produced in the reaction is: 4.50 mol Ca(PO4)2 * 212.09 g/mol = 953.41 g Ca(PO4)2 These are the masses of each product that would be produced if 750 mL of 6.00 M H3PO4 reacts according to the given chemical equation.
To determine the volume of H3PO4 required to react with 4.5 grams of Zinc, we need to convert the mass of Zinc to moles using its molar mass (65.38 g/mol). Then, we use the stoichiometry of the balanced chemical equation to find the corresponding mole ratio between H3PO4 and Zinc (Zn). Finally, we convert the moles of H3PO4 to liters using its molarity (3.0 M).
The formula for phosphoric acid is H3PO4; therefore, there are 8 atoms in each molecule of the acid.
H3PO4 is the formula of phosphoric acid. 3 x 1.01 +1 x 30.97 + 4 x 16 = 98.0 g / mole
One molecule of P2O3 = 1 mole. Go to the periodic table P = 30gm x 2 = 60 gm. O= 16 gm x 3 = 48 mg. Total is 60 + 48 = 108 gm is the weight of one molecule which is also the number of grams in 1 mole (remember 1 mol = 1 mole). So since you have 37.9 grams divide this by 108 and you have .35 moles.
H3PO4 + 1 OH- --> H2PO4- + 1 H2O H3PO4 + 2 OH- --> HPO42- + 2 H2O H3PO4 + 3 OH- --> PO43- + 3 H2O
mole mole mole mole mole
A mole of oxygen atoms has a mass of approximately 16 grams. A mole of O2 has a mass of approximately 32 grams. A mole is 6.02 x 1023 particles and as such a mole of oxygen atoms has only half the mass of a mole of oxygen molecules.
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gold, as it has a higher molar mass