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saveliy_v [14]
2 years ago
11

Explain the trend as you move across a row of the periodic table for each of the following atomic

Chemistry
1 answer:
monitta2 years ago
8 0
Answer(s):

a) atomic radius decreases when moving across a period and increased when going down a group.

b) ionization energy increases when moving from left to right across and element period.

Vocab explanations:
groups: The columns of the periodic table are called groups.
periods: The horizontal rows are called periods.

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Can somebody Answer number 23 please it’s for a exam
qaws [65]

Answer:

I think everything that's there is correct.

Explanation:

Bleach with pH of about 12.5 would be a strong base.

Milk with pH of 6.5 and Blood with pH around 7 would be neutral.

Battery acid with pH below 1 is strong acid and orange juice is weak acid.

8 0
3 years ago
Write balanced chemical equations for the sequence of reactions that oxalic acid can undergo when it's dissolved in water.
Mashcka [7]

Answer and Explanation:

The balanced chemical equations are as follows:

The chemical formula of oxalic is  H_2C_2O_4

In the case when oxalic acts reacted with the water so here the oxalic acid eliminates one proton that leads to the development of mono acids

After that, the second step derives that when oxalic acid is in aqueous solution eliminates other proton so it represent the polyprotic acid

Now the chemical equations are as follows:

Elimination of one proton

H_2C_2O_4(aq)+H_2O(l)  \rightarrow H_2C_2O_4^-(aq) + H_3O^+(aq)

Now the elimination of other proton

HC_2O_4^-(aq)+H_2O(l)  \rightarrow C_2O_4^2^-(aq) + H_3O^+(aq)

7 0
3 years ago
Carbon-12 and carbon-13 are isotopes of carbon.
ohaa [14]

Answer:

Isotopes of an element share the same number of protons but have different numbers of neutrons. Let's use carbon as an example. There are three isotopes of carbon found in nature – carbon-12, carbon-13, and carbon-14. All three have six protons, but their neutron numbers - 6, 7, and 8, respectively - all differ.

Explanation:

4 0
3 years ago
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How does the muscular and nervous system work together to help maitain homeostasis
Inessa [10]
The nervous system sends signals to the muscles to shiver when our body temperature begins to drop to a lower than normal temperature. the slight movement of the muscles will work to bring temperature back to homeostasis
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Whenever a continuous bell alarm sounds in the Chemistry building:
deff fn [24]

Answer:

C

Explanation:

This is essentially one of the several safety measures in the chemical laboratory. This particular approach is one used in the case of fire eventualities.

A is wrong

This is because in the advent of a fire incident, it is necessary to evacuate the building as a whole. Meeting in the hallway is still within the building which is not the right thing to do when there’s a fire outbreak. Occupants are expected to leave the building immediately

B. Is also wrong. Taking time to pack your belongings might make you be caught in the inferno. It is expected that you leave the building at once

4 0
3 years ago
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