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3 years ago

What are 4 properties that krypton has?

2 answers:

5 0

Atomic number36,Atomic mass83.80 g.mol -1,Density3.73 10-3 g.cm-3 at 20°C,Melting point- 157 °C,Boiling point- 153° C

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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Which of these does not describe a significant ethical dilemma in the drug industry?

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D as it only has a negative effect when being used and it is small at that anyway.

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3 years ago

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Please answer asap need it by Wednesday morning

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Answer:

1.7 PH

Explanation:

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3 years ago

Very urgent/easy chem question easy points

aev [14]

Sodium chloride is the answer

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3 years ago

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2H2 + 02>2 H20 What is the reaction

Murrr4er [49]

Answer: The actual reaction to make water is a bit more complicated: 2H2 + O2 = 2H2O + Energy. In English, the equation says: To produce two molecules of water (H2O), two molecules of diatomic hydrogen (H2) must be combined with one molecule of diatomic oxygen (O2). Energy will be released in the process.

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3 years ago

Suppose that X represents an arbitrary cation and that Y represents an anionic species. Using the charges indicated in the super

dmitriy555 [2]

Answer:

See explanation.

Explanation:

Hello!

In this case, when having the cationic and anionic species with the specified charges, in order to abide by the net charge rule, we need to exchange the charges in the form of subscripts and without the sign, just as shown below: $X^{m+}Y^{n-}\rightarrow X_nY_m$

Thus, for all the given combinations, we obtain:

- Y⁻

$X^+Y^-\rightarrow XY\\\\X^{2+}Y^-\rightarrow XY_2\\\\X^{3+}Y^-\rightarrow XY_3$

- Y²⁻

$X^+Y^{2-}\rightarrow X_2Y\\\\X^{2+}Y^{2-}\rightarrow X_2Y_2\rightarrow XY\\\\X^{3+}Y^{2-}\rightarrow X_2Y_3$

- Y³⁻

$X^+Y^{3-}\rightarrow X_3Y\\\\X^{2+}Y^{3-}\rightarrow X_3Y_2 \\\\X^{3+}Y^{3-}\rightarrow X_3Y_3\rightarrow XY$

Best regards!

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2 years ago