Answer:
The answer to your question is: 6 ml of HCl
Explanation:
1.- Molarity of NaCl in solution
n = # of moles
M = n / volume (l)
n = M x v
n = (0.1) (0.030)
n = 0.003 moles of NaOH
2.- Number of moles of HCl that react
From the reaction 1 mol of NaOH ----------------- 1 mol of HCl
0.003 moles ----------------- x
x = (0.003 x 1) / 1 = 0.003 moles of HCl
3.- Volume of HCl that react
M = n/ V
V = n / M
V = 0.003 / 0.5
V = 0.006 l
V = 6 ml
<span>His periodic table provided everyone with the idea that elements should be arranged by the increasing order of their fundamental properties. It was later discovered that atomic number IS the fundamental property</span>
I took this I believe it’s A
The law of conservation of mass states that mass can neither be created nor destroyed. This means that, in a chemical reaction, the mass of reactants should be equal to the mass of products.
The equation we have is:
Al + 3HCl .....> H2 + AlCl3
For aluminum: we have one mole in the reactants and one mole in the products. Therefore, aluminum is balanced
For chlorine: we have three moles in the reactants and three moles in the products. Therefore, chlorine is balanced
For hydrogen: we have three moles in the reactants and only two moles in the products. Therefore, hydrogen needs to be balanced as there are fewer hydrogen moles in the products than in the reactants.
Based on this, the right choice is:
Only hydrogen needs to be balanced. There are equal numbers of aluminum and chlorine.
Answer:
2.5 M NaOH
Explanation:
The solution with the highest molarity is the most concentrated one.
Molarity is the number of moles per unit volume of a solution.
- Molarity =
2.5M implies there are 2 mole of NaOH per solution of this given substance.
This is the highest from the list as other ones falls below it.
The lowest concentration is 0.2M because just 0.2 mole of NaOH is contained per unit volume.
