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Q: How many formula units make up 23.0 g of magnesium chloride (MgCl_{2})?

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0,355 formula units make up 33,8 g of magnesium chloride (MgCl2).

Approx. 3 formula units (the molar mass of the anhydrous MgCl2 is 95,211).

The number of formula units is 1,58.10e23.

The molar mass of magnesium chloride is 95,211 g.25,6/95,211 = 0,269

32,2 g is 0,338 from the formula unit.

The mass of 6.80 moles of magnesium chloride or MgCl2 is 647,435 g.

Magnesium chloride (MgCl2) has a molecular weight of 95.21 grams per mole. 11.6 grams of MgCl2 is therefore .122 moles.

The relative molecular mass of magnesium chloride is approximately 60. The molar mass is therefore 60g per mole. Therefore there is 0.42mol of formula units in 2.5 grams.The formula mass of MgCl2 is 24.3 + 2(35.5) = 95.3Amount of MgCl2 = 2.5/95.3 = 0.0262molThere are 0.0262 moles of formula unit in 2.5 grams of magnesium chloride.To get the number (not in moles), multiply the amount in moles by the Avogadro's constant.

12.2/95.211 = .1281 moles MgCl2. .1281 x 6.022x1023 = 7.7177x1022 molecules

The gram formula unit mass of magnesium chloride is 95.21. Therefore, 21.2g of magnesium chloride make up 21.2/95.21 or 0.223 formula units, to the justified number of significant digits.

formula units

No: Each "mole", more precisely called "formula mass", of sodium chloride contains two ions, as shown by its formula NaCl, but each formula mass of magnesium chloride has three ions as shown by its formula MgCl2. This is true because sodium cations have only one positive electric charge unit, magnesium cations have two electric charge units, and chloride ions have one negative electric charge unit each.

1997

molar mass of MgCl2=95.211g/mol mol=mass/molar mass=34.8g*mol/95.211g=0.3655039859molMgCl2 #of anything=mol*Avogadro's#=0.3655mol*6.022*1023formula units/mol answer= 2.20*1023

molar mass of MgCl2=95.211g/mol mol=mass/molar mass=34.8g*mol/95.211g=0.3655039859molMgCl2 #of anything=mol*Avogadro's#=0.3655mol*6.022*1023formula units/mol answer= 2.20*1023

1 formula unit of MgCl2 = 59.758g 31.4g MgCl2 x 1 formula unit/59.758g = 0.525 formula unit of MgCl2

0.60/

For this you need the atomic (molecular) mass of MgCl2. Take the number of moles and multiply it by the atomic mass. Divide by one mole for units to cancel. MgCl2= 95.3 grams2.00 moles MgCl2 Ã— (95.3 grams) = 190.6 grams MgCl2

A same number.

5.68 mol MgO x 6.02E23 formula units / 1 mol = 3.42E24 Formula Units

molar mass of MgCl2= 95.2195.21/125.25=0.76 mole1 mole would have 6.02x1023 formula units so 0.76 moles would have0.76 x (6.02x1023)= 4.575x1023 formula units.

That is three formula units of ammonium chloride, NH4Cl.

4

8

7 atoms.