The Elizabethan view of life changed little from the characteristic Medieval view of life. True False
1 answer:
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Answer:
<h2>mass = 50 g</h2>Explanation:
Density of a substance can be found by using the formula
From the question
Density = 2.5 g/mL
volume = 20 mL
To find the mass substitute the values into the above formula and solve for the mass
That's
Making mass the subject we have
mass = Density × volume
mass = 2.5 × 20
We have the final answer as
<h3>mass = 50 g</h3>Hope this helps you
Answer:
5.195 ml
Explanation:
Dissociation of HCl yields;
HCl(aq) ⇄ H⁺(aq) + Cl⁻(aq)
∴ [HCl] = [H⁺] = [Cl⁻]
pH = 1.9
= -log[ H⁺]
=
=
= 0.01258 M
Moles of HCl = number of mole × volume
= 0.01258 × 4.80 L
= 0.06042 mole
Mass of HCl = number of moles of HCl × Molar mass of HCl
Mass of HCl = 0.06042 mol × 36.5 g/mol
Mass of HCl = 2.205 grams
Also, given that the density = 1.179 g/mL
Mass of HCl in the solution = 36% of the density
i.e
= 0.4244 grams
Volume of a concentrated HCl solution needed can now be determined as;
=
=