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Murrr4er [49]
3 years ago
5

What are 4 properties that krypton has?

Chemistry
2 answers:
Nuetrik [128]3 years ago
5 0
<span><span>Atomic number36,</span><span>Atomic mass<span>83.80 g.mol -1,</span></span><span>Density<span>3.73 10-3 g.cm-3 at 20°C,</span></span><span>Melting point- 157 °C,</span><span>Boiling point<span>- 153° C</span></span></span>
Sliva [168]3 years ago
5 0
It's colorless, odorless, fast response to electric currents, non toxic and its a rare atmospheric gas
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Gerald's science teacher mixed room temperature samples of hydrochloric acid and sodium hydroxide in a large beaker. The solutio
shutvik [7]

Answer: Option (D) is the correct answer.

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The chemical reaction equation will be as follows.

      HCl + NaOH \rightarrow NaCl + H_{2}O

This means a new substance has been formed and a chemical change has taken place.

A chemical reaction in which heat energy is absorbed by the reactant molecules is known as an endothermic reaction.  

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On the other hand, a chemical reaction in which heat energy is released by the reactant molecules is known as an exothermic reaction.  

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8 0
3 years ago
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rewona [7]

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C

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5 0
3 years ago
U-238 has _____ protons and 146 neutrons
qaws [65]
U-238 
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2 years ago
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