Chemistry, 14.12.2020 22:50 maddieg5585
Students heat water in a beaker and measure its temperature The starting temperature of the water was 23.3 °C. the diagram shows its final temperature. what type of energy transfer occurred within the water?
A. thermal energy from water at the top of the beaker was transferred to water at the bottom.
B. thermal energy from water at the bottom of the beaker was transferred to water at the top.
C. Thermal energy from water at the top and bottom of the beaker was transferred to water in the middle.
D. Thermal energy from water at the top and in the middle of the beaker was transferred to water at the bottom.
Help Pleas
Answers: 3
Chemistry, 22.06.2019 11:00, snowprincess99447
Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.
Answers: 1
Chemistry, 22.06.2019 20:00, 20calzoy
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .
Answers: 3
Students heat water in a beaker and measure its temperature The starting temperature of the water wa...
History, 30.11.2020 21:20
Chemistry, 30.11.2020 21:20
Mathematics, 30.11.2020 21:20