The answer would be D. Good luck my dude
Answer:
6.3×10⁻³ moles of Cu
Explanation:
The relation is, that 1 mol of particles are contained by 6.02×10²³ particles.
This is Avogadro's number that explains that: one mole determines the number of fundamental units that are contained in a constant number but they do not depend on the type of material or the type of particle, and this quantity is 6.02 × 10²³
We can make a rule of three:
6.02×10²³ atoms are contained 1 in mol of Cu
Therefore, 3.8×10²¹ atoms will be contained in (3.8×10²¹ . 1) / NA = 6.3×10⁻³ moles
The correct options are these:
1. It will follow the law of conservation of mass.
2.The mass of products will be equal to the mass of the reactants.
The law of conservation of mass states that ' matter can neither be created nor destroyed. Thus, if a chemical equation is balanced, the mass of the reactant at the beginning of the reaction will be equal to the mass of the product after the reaction. This shows that the chemical reaction obeys the law of conservation of mass.
Answer:
The reaction forming aluminum bromide is Al + 3Br2 → 2AlBr3
Answer:
Option (C) 1 × 10^−12
Explanation:
Step 1:
Data obtained from the question include:
[H+] = 1x10^−2
[OH−] =?
Step 2:
Determination of [OH−] . This is illustrated below:
[H+] x [OH−] = 1x10^-14
1x10^−2 x [OH−] = 1x10^-14
Divide both side by 1x10^−2
[OH−] = 1x10^-14 / 1x10^−2
[OH−] = 1x10^-12
Therefore, the [OH−] of the solution is 1x10^-12
