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Oliga [24]
3 years ago
13

This is part two of the other questions

Chemistry
1 answer:
Brums [2.3K]3 years ago
8 0

Answer:

The answer to your question is below

Explanation:

11. Alkali metals

12. Halogens

13. Transition metals

14. Halogens

15. Noble gases

16. Alkaline earth metals

17. Transition metals

18. Alkaline earth metals

19. Transition metals

20. Alkali metals

21.- Periods

22.- Calcium

23.- Iodine, I

24.- A. atomic number

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You used a sample of 20 particles to determine the average mass. Do you think the average mass you calculated depends on the num
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No because its not the proper mass.
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3 years ago
Strontium chloride and sodium fluoride react to form strontium fluoride and sodium chloride, according to the reaction shown.
grin007 [14]

Answer:

4.07L of a 0.110M NaF are needed

Explanation:

Based on the reaction:

SrCl₂(aq)+2NaF(aq)⟶SrF₂(s)+2NaCl(aq)

<em>1 mole of strontium chloride react with 2 moles of NaF</em>

<em />

361mL of 0.620M SrCl₂ solution has:

0.361L ₓ (0.620mol / L) = 0.22382 moles SrCl₂.

Moles of NaF for a complete reaction must be:

0.22382 moles SrCl₂ ₓ (2 mol NaF / 1 mol SrCl₂) = <em>0.44764 moles of NaF</em>

If you have a solution of 0.110M NaF, the moles of NaF needed are:

0.44764 moles of NaF ₓ (1L / 0.110mol NaF) = <em>4.07L of a 0.110M NaF are needed</em>

<em></em>

6 0
3 years ago
Read 2 more answers
What is the term for the region where the north and south poles of atoms in a material will line up​
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Answer:

ferromagnetic materials

Explanation:

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If one of the reactants in a reaction is Na2O, what is known about the products? A.There is not enough information to say anythi
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D.The products will have at least 2 Na atoms and 1 O atom.

<h3>Further explanation </h3>

Conservation of mass states that  

<em>In a closed system, the masses before and after the reaction are the same </em>

So it can be concluded

  • mass of the reactants = mass of the products
  • mass cannot be created or destroyed
  • The number of atoms involved in a reaction remains the same⇒ number of moles also the same
  • chemical equation in balanced form

So the number of atoms in reactants and products remains the same

Because one of the reactants in a reaction is Na₂O, so <em>The products will have at least 2 Na atoms and 1 O atom.</em>

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3 years ago
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What happened to the newt population over many generations
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a sickness aka you know what toke them to a better place

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