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puteri [66]
3 years ago
9

By what the two poles of the earthare covered?​

Chemistry
1 answer:
Liula [17]3 years ago
4 0

Answer:

The Two poles are covered with thick ice and sorrounded by Arctic Ocean which is frozen.

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Write the balanced complete ionic equation for the reaction hcho2(aq)+koh(aq)→
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<span>Answer: Molecular: HC2H3O2(aq) + KOH(aq) --> KC2H3O2(aq) + H2O(l) Complete ionic: HC2H3O2(aq) + K+(aq) + OH-(aq) --> K+(aq) + C2H3O2-(aq) + H2O(l) Net Ionic: HC2H3O2(aq) + OH-(aq) --> C2H3O2-(aq) + H2O(l)</span>
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3 years ago
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Which unit is used for measuring atomic mass?
Sergio [31]
Atomic mass unit is the answer

7 0
3 years ago
Scientific Method
Leona [35]

Answer:

Problem,  Variables,  Hypothesis,  Research,  Procedure,  Data, Conclusion.

Explanation:

First, you have to know what the problem that you're talking about is. Then, you have to know the independent, dependent, and controlled variables are in order to make a hypothesis. Then do research about the topic. After that, you make the procedure your experiment, if that's what your doing. Then after the experiment, you find the data. Using that data, you make a conclusion.

4 0
3 years ago
Rubidium has two naturally occurring isotopes, rubidium -85 ( atomic mass = 84.9118 amu; abundance = 72.15%) and rubidium -87 (a
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Answer:

The answer to your question is: 85.458 amu

Explanation:

data

Rubidium-85   A = 84.9118 amu   abundance = 72.15%  

Rubidium - 87  A = 86.9092 amu abundance = 27.85%

Atomic weight = ?

Atomic weight = 84.9118(0.7215) + 86.9092(0.2785)

Atomic weight = 61.2538 + 24.2042

Atomic weight = 85.458 amu

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4 years ago
PLEASE HELP ME I WILL MARK AS BRAINLIEST ANSWER-100 points
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4:Chlorophyll. 6. Photosynthesis 8. Glucose

Explanation:

5 0
3 years ago
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