The correct answers are A, B, and C
- For example, hydrogen and oxygen are two elements that form to create water. Water is more complex than a simple atom of hydrogen or one of oxygen.
- Decomposition is an example of B
- Burning is an example of C.
D is not right because a chemical change can only join atoms or rearrange them, not completely change them.
Answer:
change temperature at different rates
Volume of solution in liters:
5.00 x 10² mL / 1000 => 0.5 L
number of moles:
mass of solute / molar mass
21.1 / 119.0 => 0.1773 moles
Molarity = number of moles / volume
M = 0.1773 / 0.5
M = 0.355 mol/L
Answer C
<span>hope this helps!</span>
Answer:
8.3
Explanation:
pH is the measure of the H+ or H30 (they r the same thing) ions in a solution. it is equal to -log[H+]. [H+]= Molar concentration of H+ ions.