Answer:
Since this is old, im just gonna get these points, don't wan't them to go to waste lm.ao
Explanation:
A new material is formed in <span>result of a chemical change. Typically, the chemical changes always make the new material.</span><span />
What your question for number 3
<h3>
Answer:</h3>
0.35 M
<h3>
Explanation:</h3>
<u>We are given;</u>
- Initial volume as 35.0 mL or 0.035 L
- Initial molarity as 12.0 M
- Final volume is 1.20 L
We are required to determine the final molarity of the solution;
- Dilution involves adding solvent to a solution to make it more dilute which reduces the concentration and increases the solvent while maintaining solute constant.
- Using dilution formula we can determine the final molarity.
M1V1 = M2V2
M2 = M1V1 ÷ V2
= (12.0 M × 0.035 L) ÷ 1.2 L
= 0.35 M
Thus, the final concentration of the solution is 0.35 M
The atomic number of an element gives the proton and electron in the atom while the mass number gives the total number of protons and neutron
