Linda performed the following trials in an experiment. trial 1: heat 30.0 grams of water at 0 °c to a final temperature of 40.0 °c. trial 2: heat 40.0 grams of water at 30.0 °c to a final temperature of 40.0 °c. which statement is true about the experiments? the heat absorbed in trial 1 is about 1,674 j greater than the heat absorbed in trial 2. the heat absorbed in trial 1 is about 3,347 j greater than the heat absorbed in trial 2. the same amount of heat is absorbed in both the experiments because the heat absorbed depends only on the final temperature. the same amount of heat is absorbed in both the experiments because the product of mass, specific heat capacity, and change in temperature are the same.

Explanation:

The formula for the heat absorbed is

q = mCΔT

Trial 1

m = 30.0 g

ΔT = 40.0 – 0 = 40.0 °C

q₁ = 30.0 × 4.184 × 40.0 = 5020 J

Trial 2

m = 40.0 g

ΔT = 40.0 – 30.0 = 10.0 °C

q₂ = 40.0 × 4.184 × 10.0 = 1670 J

q₁ - q₂ = 5020 – 1670 = 3350  J

they are both synthetic elements

explanation:

d

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.