he solution of the solution H + 7.0 = 10 -2 is H=1.
1.15
1.15 (Apex)
The little 'p' means -log10 (that's the negative log to base 10). Thus pH means -log10(Hydrogen ion concentration) → pH of the solution = -log10(7.0 x 10-2) ≈ 1.15
If concentration of Hydrogen in solution is 10-2 then its pH must be 2.
5.50
105/70 + 45/70 + 49/70 = 199/70 or 2 and 59/70
It is: (5+2)*10 = 70
1.15
1.15 (Apex)
An equation, solution x = -10
Without any equality signs the given terms can't be classed as equations.
the answer is y minus 10 divided by 2.
1.15 (Apex)
An equation, solution x = -10
1/10 + 2/7 = 7/70 + 20/70 = 27/70
2/5+3/10 equals 7/10 or 70%.
2 × ? × 5 = 70 → 2 × 5 × ? = 70 → 10 × ? = 70 → (10 ÷ 10) × ? = 70 ÷ 10 → ? = 7 → The blank is 7.