Answer:
Sodium
Explanation:
Sodium is a pure chemical, hence it can be represented by the single chemical symbol Na.
Water has a chemical symbol of H2O, consisting of two, and not one, symbols, H and O.
Sulfate ion consists of a sulfide ion and four oxygen ions (SO4)2-. Hence, it does not fit.
Finally, potassium chloride has a chemical symbol of KCl. Consisting of two different chemical symbols, (K and Cl), it does not fit either.
Hope this helped!
Answer:
Explanation:
To calculate [H⁺] first we <u>calculate the total number of H⁺ ions</u>.
H⁺ from HCl ⇒ 49.3 mL * 1.19 gSolution/mL * 38 gHCl / 100 gSolution = 22.29 g HCl
- 22.29 g HCl ÷ 36.45 g/mol = 0.612 mol HCl = 0.612 mol H⁺
H⁺ from HNO₃ ⇒ 19.5 mL * 1.42 gSolution/mL * 70 gHCl / 100 gSolution = 19.38 g HNO₃
- 19.38 g HNO₃ ÷ 63 g/mol = 0.308 mol HNO₃ = 0.308 mol H⁺
Total H⁺ moles = 0.612 + 0.308 = 0.920 mol H⁺
Final Volume = 1.00 L
- [H⁺] = 0.920 mol / 1.0 L = 0.920 M
Now we<u> calculate pH</u>:
<u>To calculate [OH⁻], we calculate pOH</u>:
- pOH = 14 - 0.036 = 13.964
pOH = 13.964 = -log[OH⁻]
= [OH⁻] = 1.086x10⁻¹⁴ M
Ok I know this did it last year let's see chemical because you can't fix it back to its normal self