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Lorico [155]
3 years ago
9

I WILL GIVE BRAINLIEST!!!!

Chemistry
1 answer:
prisoha [69]3 years ago
4 0
The answer is A) Actinides
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Please answer the chemistry question shown in the attachment photo! 25 points!
iogann1982 [59]
I’m so sorry if it’s wrong but I think it’s this.....

Answer:

2NaHCO3(s) = Na2CO3(s) + CO2(g) + H2O(g).

And I found it on Quora.com
By the way NaHCO3 is Sodium bicarbonate but a.k.a Baking soda
Hoped this helped :)

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3 years ago
Magnesium has three stable isotopes. One has 12 neutrons the second has 13 and the third has 14. Which one is the most abundant?
fiasKO [112]

Answer:

12

Explanation:

If you look at the periodic table, you can see that magnesium has an atomic mass of 24.305.  Subtract the number of protons from this to get neutrons.

24.305 - 12 = 12.305

12.305 is the average amount of neutrons a magnesium atom can have.  A magnesium atom can have 12, 13, or 14 neutrons.  The average, based on the natural abundance, is 12.305.  To find which isotope is more abundant, you need to pick the number that is closest to the average.  This would make the most abundant isotope the one with 12 neutrons.

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3 years ago
Element X has an electron configuration of 2-8-3. This element will combine with the phosphate ion to form a compound with the f
Alinara [238K]
X element can give 3 electrons, and ions X³⁺ can be formed.
Phosphate ion - (PO4)³⁻,
So compound will have formula  X³⁺(PO4)³⁻,
XPO4
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3 years ago
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When a glucose molecule loses a hydrogen atom as the result of an oxidation-reduction reaction, the molecule becomes _____.
butalik [34]

Answer:

B

Explanation:

3 0
3 years ago
A student pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. She
Reil [10]

A) Time for salt to dissolve.

This factor depends on the other steps mentioned to dissolve the salt.

4 0
3 years ago
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