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alexandr402 [8]
3 years ago
5

HELP 15-21 PLEASE!!!

Chemistry
2 answers:
suter [353]3 years ago
7 0

Answer:

ANSWER

Explanation:

Harlamova29_29 [7]3 years ago
6 0

Answer:

15. Lead (II) chloride

16. potassium chloride

17. Lithium oxide

18. Arsenious trioxide

19.Phosphorus tribromide

Explanation:

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Lilit [14]
I don't know what ur asking
3 0
3 years ago
White gold is used in jewelry and contains two elements, gold and palladium. A jeweler has two different samples that are both i
wlad13 [49]
Solution : As they have uniform composition throughout they are considered as homogeneous mixture. Both samples are mixture of two metals (gold and palladium) thus are alloys.
6 0
2 years ago
Read 2 more answers
Which of the element pairs are in the same period?
Valentin [98]

Answer:

Caesium and Barium

Explanation:

Once again, if you look at the periodic table, you can see that Caesium and Barium are in the same period (Period 6).

<em>Feel free to mark this as brainliest! :D</em>

4 0
2 years ago
How many liters of nitrogen gas is produced if 50.0L of water is produced at STP?
Alona [7]

Answer:

  • <u>25.0 liter of nitrogen gas</u>

Explanation:

<u>1. Chemical equation</u>

Ammonium nitrite is a solid compound that decomposes into nitrogen gas and water vapor as per this chemical equation:

          NH_4NO_2(s)\rightarrow N_2(g)+2H_2O(g)

<u>2. Mole ratio</u>

       1molN_2(g)/2molH_2O(g)

<u>3. Volume ratio</u>

Since, both species are gases and are at same temperature and pressure, the volume ratio is equal to the mol ratio.

Thus, the volume ratio is:

      1literN_2(g)/2literH_2O(g)

<u>4. Use the volume ratio with the known amount of water produced</u>

      50.0literH_2O(g)\times 1literN_2(g)/2literH_2O(g)=25.0literN_2(g)

8 0
3 years ago
What is the dot-and-cross diagram for magnesium chloride (MgCl2)??​
Andrei [34K]

Answer: Lewis dot structures aren't drawn for ionic compounds, such as MgCl2. Because there aren't any shared electron pairs in an ionic compound. Lewis structure are only drawn for molecular compounds, atoms, or some individual ions. If we want to visualize a chloride ion (Cl -), it's Lewis structure will show Cl with complete octet.

Explanation: Hope this helps you

3 0
2 years ago
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