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devlian [24]
2 years ago
6

Write a word equation for the following reactions. You must indicate whether each substance is a solid, liquid, gas, or solution

.
a. sodium carbonate solution reacts with silver nitrate solution.
b. potassium carbonate solution reacts with nitric acid (hydrogen nitrate) solution.
c. barium nitrate solution reacts with potassium chromate solution.
Chemistry
1 answer:
german2 years ago
7 0

A word equation is one that is written in words rather than using the normal symbols of the elements that are involved.

<h3>What is a word equation?</h3>

A word equation is one that is written in words rather than using the normal symbols of the elements that are involved. In this case we are asked to write the word equation for certain reactions and the states of matter of each of the terms in the reaction must be stated.

The word equations are as follows;

  • sodium carbonate solution(aq) +  silver nitrate solution(aq) ----> sodium nitrate(aq) + silver carbonate(aq)
  • potassium carbonate solution(aq) + nitric acid (hydrogen nitrate) solution(aq) -----> potassium nitrate(aq) + water(l) + carbon dioxide
  • barium nitrate solution (aq)+  potassium chromate solution(aq) -----> potassium nitrate (aq) + barium chromate (s)

Learn more about reaction equation:brainly.com/question/3588292

#SPJ1

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Find the ratio v/cv/c for an electron in the first excited state (n = 2) of hydrogen.
dezoksy [38]

The answer is 0.365:100.

v/c ratio represents ratio of speed of an electron (v) to the speed of light (c).

How is the speed of an electron calculated?

  • The speed of an electron (v) is given by Bohr's model as-

v =\frac{1}{n}\; \frac{e^{2}}{4\pi \varepsilon _{0}}\times \frac{2\pi }{h}

Now, for the first excited state, n = 2.

e - Charge of electron = 1.6×10^{-19} C

h - Plank's constant = 6.6×10^{-34} J.s

ε₀- permittivity = 8.85×10^{-12}N^{-1}.C^{2}.m^{-2}

  • Put the above data in the formula-

v =\frac{1}{2}\; \frac{e^{2}}{4\pi \varepsilon _{0}}\times \frac{2\pi }{h}       =\frac{1}{4}\times \frac{(1.6\times 10^{-19})^{2}}{8.85\times 10^{-12}\times 6.6\times 10^{-34}}\\ \\     =0.01096\times 10^{8} \\      \\=1.096\times 10^{6}ms^{-1}

  • Now, the speed of light, c = 3.0×10^{8}\ m/s
  • Thus, the v/c ratio for an electron in the first excited state is calculated as-

\frac{v}{c} =\frac{1.096* 10^{6}\ m/s }{3.0 *10^{8}\ m/s }= \frac{0.365}{100}

  • Hence, the v/c ratio = 0.365:100.

To learn more about the speed of an electron (v), visit:

brainly.com/question/13198566

#SPJ4

6 0
2 years ago
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bezimeni [28]
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