<h3>
Answer:</h3><h3>a) 9.033 × 10²³ particles</h3><h3>b) 4.068 × 10²⁴ particles</h3><h3>c) 1.51 × 10²³ particles</h3>
Explanation:
For us to answer these questions, we have to know two formulas:
- Number of particles = moles × Avogadro's Number
- Moles = Mass ÷ Molar Mass
Therefore:
a) particles of Na = 1.50 mol × (6.022 × 10²³) particles/mol
= 9.033 × 10²³ particles
b) particles of Pb = 6.755 mol × (6.022 × 10²³) particles/mol
= 4.068 × 10²⁴ particles
c) particles of Si
= (7.02 g ÷ 28.085 g/mol) × (6.022 × 10²³) particles/mol
= 1.51 × 10²³ particles
Answer:
Option D. All of these
Explanation:
The creativity involves the process of using the brain to use new or existing knowledge to overcome a problem. This sometimes involves starting something purely from stretch or using the existing design laws and theories to solve a problem. As a result, the correct option is D as all of the above applies.
Number of electrons or protons present in a neutral atom is called atomic number. It is represented by Z.
Answer:
I believe it is B. molar mass...
Explanation:
Hope this is right!
B. Isotopes have different numbers of neutrons but the same number of protons.
