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trasher [3.6K]
3 years ago
14

How many valence electrons are transferred to nitrogen from potassium in the formation of the compound potassium nitride? 1?

Chemistry
1 answer:
mel-nik [20]3 years ago
8 0
The formula is K3N   Answer  3 electrons.  Nitrogen has 5 valence electrons and accepts 3 electrons to form a stable octet.
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In aqueous solution, hypobromite ion, BrO-, reacts to produce bromate ion, BrO3 -, and bromide ion, Br-, according to the follow
maw [93]

Answer:

22.73s

Explanation:

The reaction is a second order reaction, we know this by observing the unit of the slope.

rate constant = k = 0.056 M-1s-1

the initial concentration of BrO- [A]o = 0.80 M

time = ?

Final concentration [A]t= one-half of 0.80 M = 0.40M

1 / [A]t = kt + 1 / [A]o

1 / 0.40 = 0.056 * t + 1 / 0.80

t = (2.5 - 1.25) / 0.056

t = 22.73s

5 0
3 years ago
Why are the seasons for the southern hemisphere reversed from the northern hemisphere
MArishka [77]
Becuse the earth rotates the opisate way on the other side of the equator forgive me if im wrong.
5 0
4 years ago
An aqueous of H3PO4 was prepared by dissolving 8.85 g in enough water to make 350.0 mL solution. Also, an aqueous solution of Ca
vivado [14]

Answer:

25.0 mL

Explanation:

1. Gather the information in one place.

MM:      98.00         74.09

           2H3PO4 + 3Ca(OH)2 → Ca3(PO4)2 + 6H2O

m/g:       8.85           15.76

V/mL:   350.0           550

2. Moles of H3PO4

n = 8.85 g × (1 mol/98.00 g) = 0.09031 mol H3PO4

3. Moles of Ca(OH)2

n = 15.76 g × (1 mol/74.09 g) = 0.2126 mol Ca(OH)2

4. Moles of Ca(OH)2 in 25.0 mL Solution

n = 0.2126 mol × (25.0 mL/550 mL) = 0.009 663 mol Ca(OH)2

5. Moles of H3PO4 needed

From the balanced equation, the molar ratio is 2 mol H3PO4: 3 mol Ca(OH)2

n = 0.009 663 mol Ca(OH)2 × (2 mol H3PO4/3 mol Ca(OH)2)

= 0.006 442 mol H3PO4

6. Volume of H3PO4

V = 0.006 442 mol ×( 350.0 mL/0.09031 mol) = 25.0 mL H3PO4

It will take 25.0 mL of the H3PO4 solution to neutralize 25.0 mL of the Ca(OH)2 solution.

8 0
4 years ago
The two abundant gases in the atmosphere are
ki77a [65]

Answer:

The most abundant gas in the atmosphere is nitrogen, with oxygen second

Explanation:

4 0
3 years ago
Read 2 more answers
The molar mass of naoh is 40.00 G/mol. If 5.20 g naoh are dissolved in 0.500 l of solution what is the molarity of the solution
valkas [14]
                         moles NaOH = 5.20 g * 1 mol / 40.00 g = 0.13 mol
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                                       = 0.26 M
The answer to this question is 0.26 M

7 0
3 years ago
Read 2 more answers
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