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3 years ago

Potassium, K, had 19 protons, 20 protons, 19 electrons. What is the charge of the atom’s nucleus.

Chemistry

1 answer:

devlian [24]3 years ago

8 0

Answer:

+ 19

Explanation:

The following data were obtained from the question:

Proton = 19

Neutron = 20

Electron = 19

Charge on nucleus =.?

From a background understanding of the structure of an atom, the nucleus of an atom contains protons and neutrons with the proton being positively charged and the neutron is neutral while the electrons being negatively charged revolve around the nucleus.

From the above question, we understood that the potassium atom has 19 protons which are all positively charged. This simply means that the nucleus has a charge of + 19 since the neutrons are neutral.

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Maksim231197 [3]

Answer:

A precipitation is answer

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3 years ago

Non-electrolyte = A, 10.6 grams, dissolved in solvent B, 740 grams, the boiling point of the solution is higher than the boiling

Thepotemich [5.8K]

Answer:

2.1 °C/m

Explanation:

Hello, for this exercise, consider the formula:

$T_{solution}-T{solvent}=K_bm_solute$

Considering that the difference in the temperature is 0.284°C, and the given molality by:

$m_{solute}=\frac{10.6g\frac{1mol}{106g}}{740g*\frac{1kg}{1000g} } \\m_{solute}=0.135m$

Now, solving for $K_b$ , we get:

$K_b=\frac{0.284C}{0.135m}\\K_b=2.1 C/m$

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3 years ago

What are the prompt neutrons that occur during nuclear fission?

zysi [14]

Answer:

Prompt Neutrons

Explanation:

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3 years ago

True or false: atoms are electrically neutral; that is they do not have a charge.

AfilCa [17]

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3 years ago

How can you use probability to predict the outcome of a codominant cross?

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Featured snippet from the web
Calculate: Punnett squares can be used to predict probable outcomes of genetic crosses. To calculate probability, divide the number of one kind of possible outcome by the total number of all possible outcomes. For example, if you toss a coin, the chance it will land on heads is equal to 1 ÷ 2.

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4 years ago