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Yuki888 [10]
3 years ago
15

Magnesium is in Group 3. Strontium is in group 5. Which element do you predict will be less reactive in water?

Chemistry
1 answer:
GaryK [48]3 years ago
8 0

Answer:

Strontium

Explanation:

strontium will be less reactive because reactivity decreases down the group

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3 years ago
in the chemical equation HCI+CaCO3 which element cannot be apart of the products a carbon b chlorine c nitrogen d oxygen​
FromTheMoon [43]

Answer:

Nitrogen

Explanation:

The element nitrogen cannot be a product in the given reaction.

  The reaction is;

    HCl  + CaCO₃

According to the law of conservation of matter, "matter is neither created nor destroyed in the cause of a chemical reaction".

The law suggests that, in a chemical reaction, we end up with the same species we started with. Although due to rearrangement of bonds,  new compounds can form;

 

Starting atoms

     H

     Cl

     Ca

      O

These species will also be found in the product.

5 0
4 years ago
How mariy molecules of water are in a 500.3 g sample?
JulijaS [17]

Answer:

1.67×10^25 molecules

Explanation:

No of molecules = no of moles × Avogadros number

No of moles= mass in gram / molar mass

No of moles of water in given sample = 500.3/18

= 27.79 moles

No of molecules = 27.79× 6.02×10^ 23

= 167.32×10^23 or 1.67×10^25

3 0
3 years ago
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