Answer:
1.45 x 10²³ particles
Explanation:
Given parameters:
Number of moles of carbon = 0.24moles
Unknown:
Number of particles = ?
Solution:
A mole of a substance contains the Avogadro's number of particles.
The Avogadro's number of particles is 6.02 x 10²³
So;
0.24 moles of carbon will contain 0.24 x 6.02 x 10²³ = 1.45 x 10²³ particles
Answer:
A. 3
Explanation:
Principle 3:
Less Hazardous Chemical Syntheses - Wherever practicable, synthetic methods should be designed to use and generate substances that possess little or no toxicity to human health and the environment.
Answer: i think its d
Explanation:
D. The scientist provides unbiased information to the government.
The total number of moles of NaOH needed to react : 4
<h3>Further explanation</h3>
Given
Reaction
2NaOH + H2SO4 → Na2SO4 + 2H2O
Required
moles of NaOH
Solution
The chemical reaction coefficient shows the mole ratio of the components of the compounds involved in the reaction, either in terms of reactants or products
From the equation, mol ratio of NaOH and H2SO4 : = 2 : 1, so mol NaOH :
= 2/1 x mol H2SO4
= 2/1 x 2 moles
= 4 moles
Answer:
6.76 moles.
Explanation:
2CO(g)+O2 (g) =2CO2(g)
When 2 CO mols were reacted with excess O2 then 2 mols of CO2 is created.
Therefore if 6.76 moles reacted, same number of CO2 will be created.