How do you figure out moles?

Write the formula for a complex formed between zn2 and nh3, with a coordination number of 3.

The reaction below can be catalyzed by manganese dioxide (MnO2). if you carries out such a reaction, which compound would you expect to find the the reaction container at the end of the reaction? A) MnO B) MnH2 C) Mno2 D) MnOH

Starting with the unbalanced equation for the combustion of ethanol, C2H5OH (l) + O2 (g) →CO2 (g) + ? H2O (l) what coefficient should be placed in front of H2O to balance the hydrogen atoms?

When electrons gain energy, what can they do? A. drop to a lower energy level B. move to a higher energy level

If displacement is decreasing, then velocity is:

Which of the following is a characteristic of nonmetals? a. nonmetals are often shiny and hard. b. nonmetals are often malleable. c. Nonmetals do not conduct electricity. d. nonmetals are often ductile.

How does a change in temperature affect the kinetic energy of the particles in a reaction?

Which characteristic best identifies an Arrhenius base

Which statement correctly describes why a compound is a pure substance? O A compound is not a pure substance because each of its molecules is m elements A compound is a pure substance because its molecule cannot be broken O A compound is not a pure

What negative impact did chemistry have on society through the production and use of chlorofluorocarbons?