Select the correct answer.

a man pours some hot coffee into a small cup from a large jug that contains enough coffee for several cups. which statement correctly compares the coffee in the cup and in the jug?

a. the coffee in the cup has a lower temperature than the coffee in the jug because there's less of it.

b. the coffee in the jug absorbs more heat than the coffee in the cup because there's more of it.

c. the coffee in the jug has more thermal energy than the coffee in the cup.

d. the coffee in the cup and the coffee in the mug have the same amount of internal energy.

e. the coffee in the cup has more thermal energy, but the coffee in the jug has more internal energy.

there is none because earth is stationary and flat.

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l

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