Please answer ASAP How many moles of KBro3 are required to
prepare 0.0700 moles of Br2 according to the
given reaction?
KBrO3 + 5KBr + 6HNO3➡️6KNO3 + 3Br2 + 3H2O
A. 0.0233
C. 0.220
B. 0.210
D. 0.0704

A. 0.0233

Explanation:

according to the equation,

no. of moles of KBrO3 : no. of moles of Br2 = 1 : 3

no. of moles of KBrO3

= ⅓ × 0.0700mol

= 0.0233 (3 sig. fig.)

14 days is the half-life of phosphorus-32

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the average time it took the car to travel 0.50 meters was 2.61 seconds

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