You record a %t of 85 from a spec 20.
this is equivalent to what absorbable level?
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Ответ:
0.096 M
General Formulas and Concepts:
Chemistry - Solutions
Writing compounds with polyatomic ionsMolarity = moles of solute / liters of solutionExplanation:
Step 1: Define
6.25 g Ba(NO₃)₂
250 mL
Step 2: Define conversions
1000 mL = 1 L
Molar Mass of Ba - 137.33 g/mol
Molar Mass of N - 14.01 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of Ba(NO₃)₂ - 137.33 + 2(14.01) + 6(16.00) = 261.35 g/mol
Step 3: Convert
Step 4: Find Molarity
M = 0.023914 mol Ba(NO₃)₂ / 0.25 L
M = 0.095657
Step 5: Check
We are given 2 sig figs as our smallest. Follow sig fig rules.
0.095657 M ≈ 0.096 M