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timofeeve [1]
2 years ago
12

How many nucleons are there in an atom with a nuclear charge of +20 and 23 neutrons?

Chemistry
1 answer:
dalvyx [7]2 years ago
8 0

Answer:

43

Explanation:

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How many structures are possible for a square planar molecule with a formula of ax3y?
Galina-37 [17]

Answer:

Explanation:

Depending upon the relative arrangements of XandY X a n d Y , the square planar molecule AX3Y A X 3 Y shows only the following structure: Hence, only one structure is possible for a square planar molecule with a formula of AX3Y A X 3 Y .

5 0
2 years ago
is the approximate relation celsius = 1/2 fahrenheit a better approximation at higher or lower temperatures?
kirill115 [55]

Answer : The approximate relation Celsius = 1/2 Fahrenheit is a better approximation at higher temperatures

Explanation :

The formula for Celsius to Fahrenheit conversion is

C = (F-32) \times \frac{5}{9}

At lower temperature the value that needs to be subtracted (32) is large enough as a result the approximation "celsius = 1/2 fahrenheit " does not seem valid.

For example, 50 F is 10°C.

(50 - 32) \times \frac{5}{9} = 10 C

This is almost 1/5 of Fahrenheit temperature.

But at higher temperatures , the value becomes insignificant and also the ratio  5/9 tend to be equal to 0.5.

For example, 2000 F is 1093°C

(2000 - 32) \times \frac{5}{9} = 1093 C

This is almost half of Fahrenheit temperature.

Therefore , the approximate relation Celsius = 1/2 Fahrenheit is a better approximation at higher temperatures

8 0
3 years ago
How many significant figures are in 4.8cm?
kramer

Answer: 2. they are 4 and 8

Explanation: I took the exam. I hope I helped :)

4 0
2 years ago
The monoprotic acid from among the following is
oksian1 [2.3K]

Monoprotic acid are acids having only one hydrogen atoms after dissociation into ions from its compound. The monoprotic acid from among the following is HCl. The answer is letter D. HCl → H+ + Cl-. Note that there is only one H+ ion upon dissociation.

3 0
3 years ago
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Free_Kalibri [48]
<span>In the written directions the indicator that the matter contains protein is when the solution turns a purple color. Therefore we can conclude that if your sample causes the solution of Copper Sulfate and Sodium Hydroxide to turn purple, it does indeed contain protein.</span>
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3 years ago
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