Answer:
1. 1.25 mol ants x 6.02*10^23 ants/1 mol ants = 7.53*10^23 ants
2. 4.92*10^26 pencils x 1 mol pencils/6.02*10^23 pencils = 817 mol pencils
3. 0.26 mol molecules x 6.02*10^23 molecules/1 mol molecules = 1.6*10^23 molecules
4. 3.46*10^19 molecules x 1 mol molecules/6.02*10^23 molecules = 5.75*10^-5 mol molecules
5. 5.3*10^20 atoms x 1 mol atoms/6.02*10^23 atoms = 8.8 mol atoms
6. 0.11 mol atoms x 6.02*10^23 atoms/1 mol atoms = 6.6*10^22 atoms
I would suggest looking into "dimensional analysis" for help with this type of material. Dimensional analysis will stick with you all throughout chemistry, so picking it up will be extremely beneficial.
I think its time isn't a unit
M₁ x V₁ = M₂ x V₂
0.50 x 100.0 = 2.5 x V₂
50 = 2.5 x V₂
V₂ = 50 / 2.5
V₂ = 20.0 mL
hope this helps!
Subatomic particles are those particles which are smaller than the atom such as electrons, protons and neutrons.
Protons are positively charged particle whereas electrons are negatively charged particle with same magnitude.
Neutrons have about the similar mass as protons but without any electric charge (neutral).
The false statement for the subatomic particles are that some atoms don't have protons: All atoms contains three subatomic particles. Every atom must have protons otherwise atom doesn't exist.
The another false statement for the subatomic particles that the protons (positively charge) and neutrons (neutral) have charges of the same magnitude.
