The molar (molecular) mass of hydrochloric acid is found by adding up the atomic masses of both elements in the compound. (appx.)
H= 1.0
Cl= 35.5
HCl= 36.5 grams
The balanced chemical equation is: Mg + 2HCl → MgCl2 + H2. Since magnesium reacts with 2 moles of HCl to produce 1 mole of hydrogen, the molar ratio is 2:1. Therefore, with 2.50 moles of magnesium, 5.00 moles of HCl will be consumed. To find the mass of HCl consumed, use the molar mass of HCl (molar mass of HCl = 36.46 g/mol) and the number of moles consumed in the reaction. Thus, the mass of HCl consumed will be 182.3 g.
2NaCl + H2SO4 ----> 2HCl + Na2SO4 *molar mass of H2SO4 is 98.09g *molar mass of NaCl is 58.44g *molar mass HCl is is 36.46g Moles NaCl = 150 g / 58.44 = 2.56 The ratio between NaCl and H2SO4 is 2 : 1 so NaCl is the limiting reactant We would get 2.56 mol HCl => 2.56 mol x 36.46 g/mol = 93.3 g
*first you set the equation: -(10mL of HCl)(1 mol of HCl)/(22.4 mL of HCl)= .446 mol of HCl *you divide by the volume of HCl which is 22.4 at STP. *Then you will divide that .446 mol of HCl with the mol of Zn, which is 1: -(.446 mol of HCl)( I mol of Zn)/(1 mol of HCl)= .446 mol Zn
hydrogen chloride = H+1, Cl-1 = HCl H = 1.008 Cl = 35.453 HCl = 36.458 g/mol 21.1 g x 1 mol HCl/36.458g = .579 mol HCl The ions of hydrogen chloride balance out so the formula is HCl. You add the atomic weights of the individual elements to get a grams/mole for the molecule HCl. You take the information that was given, 21.1g of HCl, and multiply it by the fact that 1 mole of HCl is 36.458g. Grams cross out and you're left with 21.1 x 1 mol / 36.458 = .579 mol. This is how many moles are in 21.1g of HCl.
All you have to do is convert the 6.5 g HCl solution into moles, and then plug that value into the molarity formula. If you need help, here are the formulas: # mol = (mass of substance)/(molar mass) - the molar mass is just the molecular mass of the substance expressed in grams :) Molarity (M) = (# mol solute)/(# L solution) - the solute, in this case, is the HCl, and the solution is just one, based on your question Happy Calculating!!!
To find the number of moles in 2 grams of HCl, you need to divide the mass by the molar mass of HCl. The molar mass of HCl is approximately 36.46 g/mol. Therefore, 2 grams of HCl is equal to 2/36.46 = 0.055 moles.
To find the number of moles in 108 grams of HCl, you need to know the molar mass of HCl, which is about 36.5 g/mol. You can then use this molar mass to calculate the number of moles by dividing the given mass by the molar mass. In this case, 108 grams divided by 36.5 g/mol gives you about 2.96 moles of HCl.
0.1mol
To find the number of moles in 23.34 grams of HCl, you need to divide the mass by the molar mass of HCl. Calculate the molar mass of HCl (hydrochloric acid), which is 1 (hydrogen) + 35.5 (chlorine) = 36.5 g/mol. Divide the mass of 23.34 grams by the molar mass of 36.5 g/mol to find the number of moles.
The balanced chemical equation is: Mg + 2HCl → MgCl2 + H2. Since magnesium reacts with 2 moles of HCl to produce 1 mole of hydrogen, the molar ratio is 2:1. Therefore, with 2.50 moles of magnesium, 5.00 moles of HCl will be consumed. To find the mass of HCl consumed, use the molar mass of HCl (molar mass of HCl = 36.46 g/mol) and the number of moles consumed in the reaction. Thus, the mass of HCl consumed will be 182.3 g.
Divide by molar mass and check the units(italicalized):0.140 (g HCl) / 36.45 (g.mol-1HCl) = 3.84*10-3 mol HCl
8.3 grams HCl (1 mole HCl/36.458 grams) = 0.23 moles HCl ------------------------
2NaCl + H2SO4 ----> 2HCl + Na2SO4 *molar mass of H2SO4 is 98.09g *molar mass of NaCl is 58.44g *molar mass HCl is is 36.46g Moles NaCl = 150 g / 58.44 = 2.56 The ratio between NaCl and H2SO4 is 2 : 1 so NaCl is the limiting reactant We would get 2.56 mol HCl => 2.56 mol x 36.46 g/mol = 93.3 g
The reaction is balanced, so the mole ratio of Mg to HCl is 1:2. Calculate the molar mass of HCl (1 mol HCl = 1g + 1g = 36.5g), then use stoichiometry to convert the mass of Mg to moles of HCl. Finally, divide the mass of Mg by 1 (from the ratio 1:2) and multiply by the molar mass of HCl to find the mass needed.
The balanced chemical equation for the reaction between HCl and Mg is: Mg + 2HCl -> MgCl2 + H2. One mole of Mg reacts with 2 moles of HCl. Calculate the moles of Mg in 5.2 grams using the molar mass of Mg. Then use the mole ratio to find the moles of HCl needed, and finally calculate the mass of HCl using its molar mass.
M * V = n 0.405 M * 0.00425 ml = 0.00172125 mole of HCl The molar mass of HCl is: 1.007947 + 35.453 = 36.460947 g/mole m = mm * n So the mass in gram is: 36.460947 g/mole * 0.00172125 mole = 0.0628 gram
The balanced equation for the reaction is: Mg(s) + 2HCl(aq) -> MgCl2(aq) + H2(g). To calculate the mass of HCl consumed, you need to know the molar mass of HCl (approximately 36.46 g/mol) and the molar ratio between HCl and Mg in the balanced equation (2 moles of HCl per 1 mole of Mg). Once you have the moles of Mg given, you can use the mole ratio to calculate the moles of HCl consumed, and then convert that to mass using the molar mass of HCl.