Apatient’s urine sample has a density of 1.02 g/ml. if 1250 ml of urine was excreted by the patient in one day, what mass of urine was eliminated?
a) 1.28 kg
b) 1225 g
c) 1275 g
d) 128 g

The correct answer is option C.

Explanation:

To calculate mass of a substance, we use the equation:

We are given:

Density of patient’s urine = d = 1.02 g/mL

Mass of liquid = m =?

Volume of patient’s urine =V= 1250 mL

Putting values in above equation, we get:

1,275  grams of urine was eliminated.

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.