what is the molar mass of $\text{ca(clo}_4)_2$?

- 171.6 g/mol
- 203.6 g/mol
- 239.0 g/mol
- 279.1 g/mol

Question

what is the molar mass of $\text{ca(clo}_4)_2$?

- 171.6 g/mol
- 203.6 g/mol
- 239.0 g/mol
- 279.1 g/mol

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "multiple_choice_formatter", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [ "Molar Mass Calculation" ], "new_concepts": [], "current_concepts": [ "Molar Mass Calculation" ] } ## Identify atomic masses of constituent elements $$ \begin{aligned} M(\text{Ca}) &\approx 40.08\text{ g/mol} \ M(\text{Cl}) &\approx 35.45\text{ g/mol} \ M(\text{O}) &\approx 16.00\text{ g/mol} \end{aligned} $$ ## Calculate the molar mass of the compound $$ \begin{aligned} M(\text{Ca(ClO}_4)_2) &= M(\text{Ca}) + 2 \times M(\text{Cl}) + 8 \times M(\text{O}) \ &= 40.08 + 2(35.45) + 8(16.00) \ &= 40.08 + 70.90 + 128.00 \ &= 238.98\text{ g/mol} \approx 239.0\text{ g/mol} \end{aligned} $$

(A) 171.6 g/mol

(B) 203.6 g/mol

(C) 239.0 g/mol

(D) 279.1 g/mol

{ "subject": "Natural Science", "question_type": "Multiple Choice", "knowledge_point": [ "Natural Science", "Chemistry", "Molar Mass Calculation" ] }

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

Identify atomic masses of constituent elements

Calculate the molar mass of the compound

Answer: