Which do all groups of plants have these are the choices A. chloroplasts B. roots C. spores D. tubes

What is two of same elements is called

Vanadium (v) oxide reacts with calcium according to the chemical equation below. when 10.0 mole of v2o5 are mixed with 10.0 mole of ca, which is the limiting reagent?

4. Why does ammonia, NH3, behave as a base when it reacts with an acid? A It accepts a neutron and becomes NH3+. B It accepts a proton and becomes NH4+. OC It donates a proton and becomes NH2

When do elements absorb energy and enter an excited state?

What are the terms: organic compound and organic chemistry? How are the hydrocarbons and models used to represent them determined? How to distinguish between saturated hydrocarbons and unsaturated hydrocarbons?

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

what kinda energy is produced when a force causes a substance to vibrate, and the energy is transferred through the substance in a wave.