Calculate the number of moles in 15.6 grams of CH4 gas

How much hydrogen and oxygen is in 100 grams of water?

Natural gas and petroleum are mostly alkanes t/f

What is a main reason why the scientific model of atoms is considered a theory rather than a law?

According to the law of conservation of energy, A) an object loses most of its energy as friction. Eliminate B) the total amount of energy for a system stays the same. C) the potential energy of an object is always greater than its kinetic energy.

Which of the following is false? Charged molecules are insoluble in water. Hydrophobic molecules tend to be nonpolar and hydrophilic molecules tend to be polar. Gasoline has partial positive and negative charges which allows it to dissolve in water.

Which is an example of Temporal Isolation? A. Flowers that bloom in different months. B. Birds that have different mating calls C. Fruits flies that mate in different locations. D. Squirrels that have different fur colors

A chemical reaction can start when enough activation energy is added to the reactants. Do you think the activation energy for chemical reactions in living things is high or low / Explain your answer

20 Which statement describes a reversible reaction at equilibrium? (1) The activation energy of the forward reaction must equal the activation energy of the reverse reaction.

Count the total number of atoms in CaCO3: 2 3 4 5 6

Question #21TrueFalse The general name for a substance added to a reaction that affects the rate but is not consumed in the reaction is called a complex a. True b. False