HELP plis ! Find the molar masses of the following compounds: SHOW ALL WORK!!!

1) LiI. Li. 7 + I 127

134g/mol

2) PbCO4

Pb =. 1 x 207 =207

C = 1 X 12 = 12

O = 4 x 16 = 64

283 g/mol

3) Mg(OH)2

Mg= 1x 12 = 12

O= 2 x16 =32

H= 2x1= 2

46 g/mol

4) K3PO4

5) (NH4)3PO4

6) C12H22O11

7) Fe2(SO4)3

8) Na3P

9) AgF

10) NH4C2H3O2

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o