Answer:
A saturated solution is a solution that contains the maximum amount of solute that is capable of being dissolved. At 20°C, the maximum amount of NaCl that will dissolve in 100. g of water is 36.0 g.
It would take 8 antacid tablets to produce 120 mL of CO2 gas.
T1 = 14⁰C = 273 +14= 287 K
T1 = 29⁰C =273 +29 = 302 K
V1 = 4.5 L
P = constant
T1/T2 = V1/V2
287/302 = 4.5/V2
V2= 302*4.5/287 = 4.7L
V2 = 4.7 L
1. 1 mol=6.02.10²³ particles

2. Molar mass = Total atomic mass of component
AlBr₃ = Ar Al + 3. Ar Br
AlBr₃ = 27 + 3. 80 = 267 g/mol
3. mass = mol x MW
MW MnCl₂ = 55 + 2.35.5=126 g/mol
mass = 31.6 x 126 =3981.6 g
4. at STP, 1 mol =22.4 L, so for 5.6 L :

5. moles = mass : MW
MW CH₃OH = 12.1 + 4. 1 + 16.1 =32 g/mol

6. 1 mol = 22.4 L at STP
1 mol = 6.02.10²³ particles
moles for 8.20 x 10¹⁴ molecules

volume :

Electrons they bond to form pairs