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3 years ago

Which family in the periodic table has elements that are silvery and lustrous?

Chemistry

2 answers:

mart [117]3 years ago

8 0

A . Akali Metals. Hope this helps

IrinaVladis [17]3 years ago

6 0

The correct answer is A. Alkali metals.
I hope this helped

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The atomic mass of the isotope copper-__ is 62.930 amu

yarga [219]

The correct answer is copper 63

8 0

3 years ago

What do carbon, hydrogen, and oxygen atoms have in common?

horsena [70]

Answer:

electrons located outside the nucleus

Explanation:

electrons are said to be located outside the nucleus of an atom and are in orbit around the nucleus.

according to Bohr in 1913.

6 0

2 years ago

40.0L of N₂ gas are in a sealed container at STP.How many moles of N₂ are present?9 mol

Vinvika [58]

Explanation:

We have to find the number of moles of N₂ that are present in a sample that has a volume of 40.0 L at STP.

STP means Standard Conditions of Temperature and Pressure. These conditions are 273.15 K and 1 atm. We know that 1 mol of N₂ will occupy 22.4 L. We can use that ratio to find the answer to our problem.

1 mol of N₂ = 22.4 L

moles of N₂ = 40.0 L * 1 mol/(22.4 L)

moles of N₂ = 1.79 mol

Answer: 1.79 moles of nitrogen are present.

8 0

1 year ago

What do you plan to do this weekend ! <br><br> ( Giving out Branliest ) <3

Lelu [443]

Answer:

Go to the pool , Bake, sleep, Watch ,Movies, go out with my freinds<3

Explanation:

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3 years ago

Write the net ionic equation for the reaction that occurs when equal volumes of 0.546 M aqueous acetylsalicylic acid (aspirin) a

Tatiana [17]

Answer:

$C_9H_8O_4+C_2H_3O_2^-\rightarrow C_2H_4O_2+C_9H_7O_4^-$

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to figure out the required net ionic equation by firstly writing out the complete molecular equation between aspirin and sodium acetate:

$C_9H_8O_4+NaC_2H_3O_2\rightarrow C_2H_4O_2+NaC_9H_7O_4$

Whereas acetic acid and sodium acetylsalicylate are formed. Now, we write the complete ionic equation whereby sodium acetate and sodium acetylsalicylate are ionized because they are salts yet neither aspirin nor acetic acid are ionized as they are weak acids:

$C_9H_8O_4+Na^++C_2H_3O_2^-\rightarrow C_2H_4O_2+Na^++C_9H_7O_4^-$

Finally, for the net ionic equation we cancel out the sodium spectator ions to obtain:

$C_9H_8O_4+C_2H_3O_2^-\rightarrow C_2H_4O_2+C_9H_7O_4^-$

Regards!

7 0

3 years ago