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4 years ago

A particle that orbits the nucleus in an atom is called an

2 answers:

8 0

This would be a proton.It has a positive charge and is found in the nucleus. Don't get it confused with an electron this is not inside the nucleus but floats around the nucleus.

ruslelena [56]4 years ago

4 0

Good Morning

Answer : A particle that orbits the nucleus in an atom is called an Electron

Hint : Electron, negatively charged particle orbiting the nucleus. Same number as protons in neutral atoms

I hope that's help !

Happy Sunday :)

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Please help me with these two questions

ANEK [815]

What is the question?

8 0

3 years ago

Which of the following statements are true? Significant figures in a measurement are all measured digits, and one estimated digi

Georgia [21]

Answer: Significant figures in a measurement are all measured digits, and one estimated digit

Significant figures communicate the level of precision in measurements Significant figures are an indicator of the certainty in measurements.

Explanation:

Significant figures : The figures in a number which express the value or the magnitude of a quantity to a specific degree of accuracy or precision is known as significant digits.

The significant figures of a measured quantity are defined as all the digits known with certainty and the first uncertain or estimated digit.

Rules for significant figures:

1. Digits from 1 to 9 are always significant and have infinite number of significant figures.

2. All non-zero numbers are always significant.

3. All zero’s between integers are always significant.

4. All zero’s preceding the first integers are never significant.

5. All zero’s after the decimal point are always significant.

6 0

4 years ago

The boiling points of the elements helium, neon, argon, krypton, and xenon increase in that order. Which of the following statem

blagie [28]

Answer:

The boiling point of noble gas increases as you go down the group because the London dispersion forces increase.

4 0

3 years ago

Y’all know what a compound for chemistry is? pls h lo

Viefleur [7K]

Its two elements put together

3 0

3 years ago

Read 2 more answers

) Calculate the molarity of a solution prepared by dissolving 117 g of sodium chloride (NaCl) in enough water to make 2.7 liters

Andrej [43]

The Molarity of the solution is given by:
$Molarity = \frac{moles-of-solute}{liters-of-solution}$ --- (A)

But NaCl, which is a solute, is given in grams.
Therefore, first, we need to convert grams into moles.

Molecular weight of NaCl = 58.44 grams/mole.

So,
117 grams * (moles/ 58.44 grams) = 2.00 moles of NaCl

Now that we have moles of NaCl, plug in the values in (A):
(A) => Molarity = (2 / 2.7 ) = 0.741 moles/litre

The correct answer is: 0.741 moles/litre = Molarity

8 0

3 years ago