if 500 milliliters of a 0.0028 normal solution are needed for a given procedure, how many milliliters of a 1.000 normal stock solution will be needed? (round answer to one decimal place)

use the formula:
$\text{volume}_{\text{needed}} \times \text{normality}_{\text{needed}} = \text{volume}_{\text{stock}} \times \text{normality}_{\text{stock}}$

answer: ml

Question

if 500 milliliters of a 0.0028 normal solution are needed for a given procedure, how many milliliters of a 1.000 normal stock solution will be needed? (round answer to one decimal place)

use the formula:
$\text{volume}_{\text{needed}} \times \text{normality}_{\text{needed}} = \text{volume}_{\text{stock}} \times \text{normality}_{\text{stock}}$

answer:   ml

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "blank_filling_formatter", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [ "Solving Linear Equations", "Applied Math Calculations" ], "new_concepts": [ "Solution Normality", "Dilution Formula" ], "current_concepts": [ "Solving Linear Equations", "Applied Math Calculations", "Solution Normality", "Dilution Formula" ] } ## Identify the given values and the formula $$ \begin{aligned} &V_{\text{needed}} = 500\text{ mL} \ &N_{\text{needed}} = 0.0028\text{ N} \ &N_{\text{stock}} = 1.000\text{ N} \ &(V_{\text{needed}})(N_{\text{needed}}) = (V_{\text{stock}})(N_{\text{stock}}) \end{aligned} $$ ## Substitute the values and solve for the unknown volume $$ \begin{aligned} &(500)(0.0028) = (V_{\text{stock}})(1.000) \ &1.4 = V_{\text{stock}} \ &V_{\text{stock}} = 1.4\text{ mL} \end{aligned} $$ If 500 milliliters of a 0.0028 Normal solution are needed for a given procedure, how many milliliters of a 1.000 Normal stock solution will be needed? (round answer to one decimal place) Use the formula: $(\text{Volume}_{\text{needed}})(\text{Normality}_{\text{needed}}) = (\text{Volume}_{\text{stock}})(\text{Normality}_{\text{stock}})$ Answer: 1.4 mL { "subject": "Natural Science", "question_type": "Fill-in-the-blank", "knowledge_point": [ "Natural Science", "Chemistry", "Solution Concentration and Dilutions" ] }

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Question

Explanation:

Identify the given values and the formula

Substitute the values and solve for the unknown volume

Answer: