Which of the following statements about solutions is NOT true? A Solutions are mixtures. B Solutions contain a solvent dissolved in a solute. C A solution has the same properties throughout. D The solute in a solution can be a solid, liquid, or gas.

6.0 g of copper was heated from 20 degree c to 90 degree c. How much energy was used to heat cu?

Which subatomic particle has a negative charge? (1) proton (3) neutron (2) electron (4) positron

What would be the danger of excessive inbreeding in animals such as dogs for example

2. What major alkene product is produced by the dehydration of the following alcohols? a. Cyclohexanol b. 1-methylcyclohexanol c. 2-methylcyclohexanol d. 2,2-Dimethylcyclohexanol e. 1,2-cyclohexanediol

Given a non-enzymatic reaction, how would you determine the forward rate constant (k1) ?

Which of the following is true for a heating curve? A. It shows how the pressure of a substance changes when heated. B. It shows how the temperature of a substance changes when heated. C. It shows how the volume of a substance changes when heated. D.

What is the part of an experiment that is not being tested and is used for comparison?

In which situation is maximum work considered to be done by a force? OA. The angle between the force and displacement is 180° B. The angle between the force and displacement is 90°. C. The angle between the force and displacement is 60° D.

What is a good sentence for (pure) substance

Driving under the influence of the of an opiate is dangerous 1: they cause the user to feel they are in a safe place and not care about outside dangers 2: They cause you to become agitated and engage in the road rage 3: They can have the unreliable