In which two types of reactions do opposite chemical changes occur?

A.) double replacement and combustion

B.) single replacement and double replacement

C.) synthesis and decomposition

D.) combustion and synthesis

Two defect of mendelevs periodic table

How many conversion factors can be created from one equivalence statement

Write a balanced half-reaction for the oxidation of gaseous nitric oxide to aqueous nitrous acid in basic aqueous solution. Be sure to add physical state symbols where appropriate.

How do chemicals affect our lives? O A. Chemicals have made many things easier. O B. Chemicals have made it possible for us to own less. O c. Chemicals make our daily lives more dangerous. O D. Chemicals have made our lives much harder.

Which best describes the molecules of an ideal gas

In the vertical columns of the periodic table, as the atomic numbers increase: a. the number of electron shells increases. b. the ionization energies increase. c. the number of electrons in the valence shell increases. d.

Which of the following solutions contains the largest total concentration of ions, assuming complete dissociation .010 M aluminum chloride .010M sodium chloride .010M aluminum sulfate .010M calcium chloride

What is the relationship between chemical equilibrium and the rates of forward and reverse reaction? a. In equilibrium, the forward reaction rate must be greater than the reverse reaction rate. b.

Choose all that apply: Living organisms use atoms from sugar molecules combined with other elements to form: Question 9 options: Lipids Metals Nonmetal atoms Nucleic Acids

12.5ml of 2.0m NaOH neutralizes 10ml og HCL, what is the acid concentration