How are concentration and chemical reaction rate related?

a. lower concentrations can lead to faster reactions.

b. higher concentrations can lead to faster reactions.

c. concentration has an unpredictable effect on reaction rate.

The identity of an element depends on the number of protons and neutrons in the nucleus. protons in the atom. neutrons in the atom. electrons in the atom.

According to one acid-base theory, a water molecule acts as a base when it accepts (1) an H + ion (3) a neutron (2) an OH - ion (4) an electron

Calcium carbonate () is 34.5% Ca by mass. In a 418 g sample of, how many grams of calcium are present?

Which of the following statements is true? Question 1 options: Metals lose electrons to become cations. Nonmetals gain electrons to become cations. Nonmetals lose electrons to become cations. Metals gain electrons to become cations.

A voltaic cell differs from an electrolytic cell in that a chemical cell uses 1) Half-life reactions 2) A solution of ions 3) An applied electric current 4) Redox reaction to produce electricity

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda