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notka56 [123]
3 years ago
7

What is the best definition for the atomic number in an element

Chemistry
1 answer:
arlik [135]3 years ago
7 0
The atomic number in an element is usually how many protons the element has. For example, Hydrogen has a 1 on top of the H (on the periodic table), therefore, Hydrogen has 1 proton. Oxygen has an 8 on top of the O (on the periodic table) so therefore, Oxygen has 8 protons.
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1. (8 pts) Consider if the initial unknown acid solution used in this experiment started out more dilute. Predict any difference
malfutka [58]

Answer:

The answers are in the explanation

Explanation:

- Initial pH: An acid solution more dilute has a higher pH because concentration of H⁺ decreases.

- pH at the half‐equivalence point: In a titration curve. The pH at the half-equivalence point will be higher because the initial pH is higher and the equivalence point pH is the same.

- NaOH volume needed to reach the equivalence point: As the diulte solution has a higher pH, the NaOH volume you need is lower than original solution.

- pH at the equivalence point: The pH at the equivalence point will be always the same (pH = 7,0). Because is the pH where the total H⁺ of the acid were consumed.

I hope it helps!

5 0
3 years ago
If a 2.75 L gas sample is held at a constant temperature, and its pressure is changed from 750.0 torr to 360.0 torr, what will t
liubo4ka [24]

Answer:

5.73 Liters

Explanation:

Pressure decreases => Volume increases (Boyles Law)

V(final) = 2.75L (750Torr/360Torr) = 5.73 Liters

5 0
2 years ago
If element A has an ionic charge of +2 and element B has an ionic charge of -3, what will be the formula for the compound create
Softa [21]
A3B2 because the oxidation numbers are the same as ionic charge just switch symbol and number. Then use the cross cross method and you get A3B2.
8 0
3 years ago
What relationship do you see between an electronic configuration of an element to its most common ion formed?
ZanzabumX [31]
An ion is an atom that has lost or gained an electron so the relation ship you would see would be a negative or a positive one depending on if it gained or lost an electron.<span />
6 0
3 years ago
Read 2 more answers
Give the chemical symbol of an element in the third period (row) of the periodic table with four 3p electrons.
Ann [662]

<u>Answer: </u>The chemical symbol of the element is Sulfur.

<u>Explanation:</u>

The element which is present in third period of the periodic table having four 3p electrons is Sulfur. Sulfur is the 16th element of the periodic table which has 6 valance electrons.

The electronic configuration of this element is:  [Ne]3s^23p^4

This element is considered as a non-metal because it will accept electrons in order to attain stable electronic configuration.

Hence, the chemical symbol of the element is Sulfur.

7 0
2 years ago
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