Answer: Changes In Temperature
Explanation:
Causes your tires to lose pressure as the air inside them expands and contracts, triggering the “Check Tire Pressure”
Answer:
25 grams (25g) of sugar
Explanation:
We can set this up algebraically:
10g = 2L
÷ 2 ÷ 2
5g = L
meaning that 5 g are needed to make 1 L
So, if we have 5 L, we will need (5 × 5) 25 grams to produce the same concentration.
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;
= 
= 
Answer is: mass fo ammonium chloride is 93.625 grams.
V(NH₄Cl) = 5 L.
c(NH₄Cl) = 0.35 M.
n(NH₄Cl) = V(NH₄Cl) · c(NH₄Cl).
n(NH₄Cl) = 5 L · 0.35 mol/L.
n(NH₄Cl) = 1.75 mol.
M(NH₄Cl) = 14 + 1·4 + 35.5 · g/mol = 53.5 g/mol.
m(NH₄Cl) = n(NH₄Cl) · M(NH₄Cl).
m(NH₄Cl) = 1.75 mol · 53.5 g/mol.
m(NH₄Cl) = 93.625 g.
Helium (He) has the lowest melting point of <span>-272.2 °C.</span>