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2 years ago

What is the charge on Na and why is it called a cation?

Chemistry

2 answers:

Crank2 years ago

8 0

Answer:

The cation produced in this way, Na +, is called the sodium ion to distinguish it from the neutral element. Because the ion has 11 positive protons and 10 negative electrons, there is a net positive charge.

Explanation:

Zigmanuir [339]2 years ago

3 0

Answer: The cation produced in this way, Na +, is called the sodium ion to distinguish it from the neutral element. Because the ion has 11 positive protons and 10 negative electrons, there is a net positive charge

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33 protons 36 electrons 45 neutrons

Artist 52 [7]

As has an atomic number of 33, so it has 33 protons.

It has a charge of 3-, so there are three more electrons than protons. Thus, there are 36 electrons.

It has a mass of 75, which is the sum of neutrons and protons.

33+n=75 ---> n = 75 - 33 = 42 neutrons

The answer is e) 33 protons, 42 neutrons and 36 electrons.

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2 years ago

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mr Goodwill [35]

Answer:

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Explanation:

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2 years ago

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What is the element with 2 protons on the

Paul [167]

Answer:

Helium

Explanation:

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2 years ago

Identify the formula for an alkene.

ioda

Answer:

CnH2n-2

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1 year ago

Determine the number of grams of sodium carbonate needed to prepare 100.0 ml of a 2.5 m solution

SCORPION-xisa [38]

Answer:

26.5 g

Explanation:

First we convert 100.0 mL to L:

100.0 mL / 1000 = 0.100 L

Now we calculate how many moles of sodium carbonate are needed, using the definition of molarity:

Molarity = moles / liters

moles = molarity * liters

2.5 M * 0.100 L = 0.25 mol

Finally we convert 0.25 moles of sodium carbonate into grams, using its molar mass:

0.25 mol * 106 g/mol = 26.5 g

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2 years ago