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stira [4]
2 years ago
13

Which of the following reactions shows a chemical change producing a gas?

Chemistry
1 answer:
Lisa [10]2 years ago
7 0

Answer:

00000000000000000000000000000009

Explanation:

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Use the successive ionization energies for this unknown element to identify the family it belongs to.
NNADVOKAT [17]

Answer: Belongs to the group 2A

Explanation:

As you can see, the first two ionization energies are close and low, meaning that this element ionizates easily.

Not only loses easily the first electron, but the second too

To remove the third electron you requiered a huge amount of energy

Now, elements easily ionizable are the ones from group IA, group 2A and transition metals.

The last ones have mixed characteristics in matter of how many electrons you can remove from them, so they are not a family.

Now the question: group I or group II ?

The elements of group I have low  ionization energies  for the first electron but high energies for the second ones.

Being all that said, the unknown element belongs to the Group 2A

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2 years ago
Find the sum of angles x° and y° from the given figure​
tresset_1 [31]

Answer:

where is the figure . u can simply add them

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Bees help flowers reproduce through a process called __________. *
Ostrovityanka [42]

Answer:

Pollination

Explanation:

5 0
3 years ago
why do liquids flow? the particles are tightly packed together the particles do not move the particles vibrate the particles are
tangare [24]
The particles are quite tightly packed together but still have enough room to be able to move and flow, their bonds aren't as strong as a solids are
3 0
2 years ago
What does vinegar do to eggs
andre [41]

Eggshells are made primarily of calcium carbonate. The acid in vinegar softens the calcium of the eggshell. Adding a little vinegar to the water when boiling eggs is an old cook’s trick that makes them easier to peel.

A link to this experiment is below in the comment box


7 0
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