Question

How many grams of CaCl2 is 0.245 mol CaCl2?

Answer 1

Just use the equation

\[Mole = \frac{Gram}{Molecualr Mass}\]

so added the molecular mass of Calcium with 2 times chlorine's molecular mass, which is listed on a periodic table

Answer 2

add*

Answer 3

CaCl2 is equal to 110.984 grams

Answer 4

do you not know how to do the algebra?

Answer 5

sub in moles and molecular mass into the equation then multiple both sides by the molecular mass to isolate grams

Answer 6

remember the units for molecular mass are g/mol

Answer 7

ok, therefore .245=110.984/0.125, correct?

Answer 8

then you cross multiply and divide the numerator by the denominator which equals to .000275

Answer 9

Not sure what you are doing


0.245 mol = grams/(110.984g/mol)
(0.245 mol)(110.984g/mol) = ( (110.984g/mol)grams )/(110.984g/mol)
(110.984g/mol)(0.245 mol) = grams(1)
(110.984g/mol)(0.245 mol) = grams

Answer 10

if you notice units cancel out and you are left with 27.19g or in significant figures 27.2g

Answer 11

CaCl2 has a molecular mass of 110.984g/mol
Grams = ?
Moles = 0.245mol

sub into equation and solve for grams

Answer 12

which I did above

Answer 13

do the same thing you did last problem, just upside down