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hoa [83]
2 years ago
9

PLS HELP ASAP I NEED HELP IMAGE BELOW

Chemistry
2 answers:
andriy [413]2 years ago
5 0
I think it would be 1, 4, 5! Also I love your profile picture!
morpeh [17]2 years ago
3 0

Answer:

1, 4, 5 are the correct answers

Explanation:

Hope this helps! :D

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What is<br>metal refinning<br>​
nikklg [1K]

Answer:

It is the way of cleaning of impurities present in metals

7 0
3 years ago
What is the mass of 2M H2SO4 in a 50ml of solution ​
Cloud [144]

Answer:

It is given in the question that molarity of the sulphuric acid is 2M, the volume of the sulphuric acid is 20 mL, the volume of the solution is 1`L.

8 0
3 years ago
If an atom has 11 protons and 13 neutrons what is it’s atomic number
Travka [436]

Answer:

the atomic number is 11 and element is Sodium (Na)

Explanation:

Number of Protons = Number of Electrons = 11

Number of Neutrons = 13

Here, the Number of Protons and Number of Electrons is 11

So,

the atomic number is <em><u>11</u></em> and element is <em><u>Sodium </u></em><em><u>(</u></em><em><u>Na) </u></em>

5 0
3 years ago
21.If the anion in an ionic compound is a nonmetal, you must change its ending
True [87]

Answer:

-ite --> Anionite

Explanation:

Feel free to give brainliest.

Have an awesome day!

7 0
3 years ago
Could someone help with this? Much appreciated!
alekssr [168]

Answer:

The 3rd answer down.

Na²O (sodium oxide) will be a base when exposed to water H²O

Explanation:

Sodium Oxide Na²O, will become Sodium Hydroxide after being exposed to water (at 80% I believe).

The oxygen ion in Na²O has 2 extra electrons which makes it highly charged and very attractive to hydrogen ions. The attraction is so strong that when Na²O comes in contact with H²O, the O(-2) strips off a hydrogen from water, forming 2 x OH ions which of course are still strongly basic.

6 0
3 years ago
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