How many molecules are present in the following quantities?
0.250 mol h2o 1.505 22
0.0045 mol al2(co3)3

how many moles are present in the following quantities?
1.0x1020 molecules h2o
5 billion atoms of carbon

what is the molar mass of each of the following substances? include units with your answer (g).
h2o
naoh
nh4cl
h2so4
al2(co3)3
pbo2

convert the following to moles.
60.0 g naoh
5.70 g h2so4
2.73 g nh4cl
10.0 g pbo2

convert the following to grams.
0.100 mol co2
0.500 mol (nh4)2co3
0.437 mol naoh
3.00 mol h2o

how many molecules are present in the following masses?
1.00 g na2co3
1000.0 g h2o

convert the following to grams.
2.0x1023 molecules h2
1.75x1024 molecules nacl
8.6x1022 molecules naoh

Q1) How many molecules are present in the following quantities?

a) 1.5055 x 10²³ molecules.

b) 2.7099 x 10²¹ molecules.

Q2) How many moles are present in the following quantities?

a) 1.66 x 10⁻⁴ mol.

b) 1.66 x 10⁻¹⁵ mol.

Q3) What is the molar mass of each of the following substances?

a) 18.0 g/mol.

b) 40.0 g/mol.

c) 53.45 g/mol.

d) 98.0 g/mol.

e) 234 g/mol.

f) 239.2 g/mol.

Q4) Convert the following to moles.

a) 1.5 mol.

b) 0.058 mol.

c) 0.051 mol.

d) 0.042 mol.

Q5) Convert the following to grams.

a) 4.40 g.

b) 48.045 g.

c) 17.48 g.

d) 54.0 g.

Q6) How many molecules are present in the following masses?

a) 5.68 x 10²1 molecules.

b) 3.345 x 10²5 molecules.

Q7) Convert the following to grams.

a) 0.664 g.

b) 169.83 g.

c) 5.712 g.

Explanation:

As the answer is very long and it can not be paste here.

Kindly find the answer in details for all questions with step by step explanation in the attached pdf and word files.

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but