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svlad2 [7]
2 years ago
9

Question 4 of 15

Chemistry
2 answers:
allochka39001 [22]2 years ago
6 0

Answer:D. 100 j

Explanation:

Anna [14]2 years ago
5 0

Answer:

B.

Explanation:

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Which of the following represents a chemical change?
Nikitich [7]

Answer:

Option B : burning of wood

Explanation:

Chemical change is a change where a new substance is created like when you will bur wood you get ash this is a new substance, so burning of wood is a chemical change.

 

7 0
3 years ago
Solid cadmium sulfide reacts with an aqueous solution of sulfuric acid . Express your answer as a balanced chemical equation. Id
max2010maxim [7]

Explanation:

When solid cadmium sulfide reacts with an aqueous solution of sulfuric acid then the reaction will be as follows.

          CdS(s) + H_{2}SO_{4}(aq) \rightarrow CdSO_{4}(aq) + H_{2}S(g)

Hence, ionic equation for this reaction is as follows.

      CdS(s) + 2H^{+}(aq) + SO^{2-}_{4}(aq) \rightarrow Cd^{2+}(aq) + SO^{2-}_{4}(aq) + H_{2}S(g)

Therefore, net ionic equation for this reaction is as follows.

      CdS(s) + 2H^{+}(aq) \rightarrow Cd^{2+}(aq) + H_{2}S(g)

8 0
2 years ago
Put the following steps in order to show how a scientist follows Scientific Method
Gekata [30.6K]
1.question, 2.observe, 3.hypothesize, 4.experiment 5.conclusion, 6. record.
8 0
2 years ago
Antoine Henri Becquerel discovered radioactivity when he was studying
Katen [24]

Antoine Henri Becquerel discovered radioactivity when he was studying

X- rays.  

He had been studying phosphorescent uranium ores and hypothesized that they might absorb sunlight and reemit it as X-rays.

His hypothesis was wrong, but his experiments led to the discovery of <em>natural radioactivity</em>.

5 0
3 years ago
Read 2 more answers
Hurry I need the answer asap
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Answer:

Heat or electricity in the atmasphere

Explanation:

4 0
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