The first question's answer is
She was expecting 122.7 grams of lead for her lesson that day but only got out 107.9 grams of lead. What was the percent yield o
1 answer:
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Answer:
a.
△H=−72 kcal
The energy required for production of 1.6 g of glucose is [molecular mass of glucose is 180 gm]
b.
The iron(III) ions and chloride ions remain aqueous and are spectator ions in a reaction that produces solid barium sulfate.
Answer:
6.70 grams of krypton-81 was present when the ice first formed
Explanation:
Let use the below formula to find the amount of sample
where
here
t = 458,000 years
= 229,000
= \
n = = 2.000
Now substituting the values