35. when the following equation is balanced, what is the coefficient for $\text{hcl}$?

$\text{mg} + \text{hcl} \
ightarrow \text{mgcl}_2 + \text{h}_2$

a) 6

b) 3

c) 1

d) 2

Question

35. when the following equation is balanced, what is the coefficient for $\text{hcl}$?

$\text{mg} + \text{hcl} \
ightarrow \text{mgcl}_2 + \text{h}_2$

a) 6

b) 3

c) 1

d) 2

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "multiple_choice_formatter", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [ "Chemical Reactions" ], "new_concepts": [ "Balancing Chemical Equations" ], "current_concepts": [ "Chemical Reactions", "Balancing Chemical Equations" ] } ## Count atoms on both sides of the unbalanced equation $$ \begin{aligned} &\text{Reactants:} \quad 1 \text{ Mg}, \quad 1 \text{ H}, \quad 1 \text{ Cl} \ &\text{Products:} \quad 1 \text{ Mg}, \quad 2 \text{ H}, \quad 2 \text{ Cl} \end{aligned} $$ ## Balance hydrogen and chlorine atoms $$ \begin{aligned} &\text{Coefficient of } \text{HCl} = 2 \ &\text{Balanced Equation:} \quad \text{Mg} + 2\text{HCl} ightarrow \text{MgCl}_2 + \text{H}_2 \end{aligned} $$ ## Identify the coefficient for HCl $$ \text{Coefficient} = 2 $$

A) 6

B) 3

C) 1

D) 2

{ "subject": "Natural Science", "question_type": "Multiple Choice", "knowledge_point": [ "Natural Science", "Chemistry", "Balancing Chemical Equations" ] }

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QUESTION IMAGE

Question

Explanation:

Count atoms on both sides of the unbalanced equation

Balance hydrogen and chlorine atoms

Identify the coefficient for HCl

Answer: