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Ugo [173]
2 years ago
7

How much energy is released if a sample loses 0.025 kg mass through radioactive decay?

Chemistry
2 answers:
allochka39001 [22]2 years ago
8 0

Answer:

C

Explanation:

Leto [7]2 years ago
7 0

Answer:

Explanation:

c

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A girl throws a rock into a pond. A leaf floating on the pond bobs up and down but does not change location on the pond's surfac
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The following situations are presented to a medical examiner. In which situation is the medical examiner most likely to gather m
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3 years ago
How does water change as it freezes?
bagirrra123 [75]

Answer:

Hi there!

Your answer is:

A.

Explanation:

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5 0
3 years ago
Given the chemical equation: Fe2O3 + 3CO --&gt; 2Fe + 3CO2
lapo4ka [179]

Answer:

The answer to your question is 160 g of Fe₂O₃  

Explanation:

Data

mass of Fe = 112 g

mass of CO = in excess

mass of Fe₂O₃ = ?

Balanced chemical reaction

                Fe₂O₃  +  3CO  ⇒  2Fe  +  3CO₂

Process

1.- Calculate the molar mass of Fe₂O₃ and Fe

Molar mass Fe₂O₃ = (56 x 2) + (16 x 3) = 112 + 48 = 160 g

atomic mass of Fe = 56

2.- Use proportions to calculate the mass of Fe₂O₃ needed

                160 g of Fe₂O₃ ------------------- 2(56) g of Fe

                 x     g of Fe₂O₃ ------------------ 112 g of Fe

                 x = (112 x 160) / 2(56)

                 x = 17920/112

                 x = 160 g of Fe₂O₃          

6 0
3 years ago
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