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3 years ago

What is the mass of 0.25 mol of sodium chloride? (show working)

Chemistry

2 answers:

miskamm [114]3 years ago

4 0

A mass of <span>58.44 g hope this helps and plz rate below and thank me on my profile plz</span>

love history [14]3 years ago

4 0

One mol of NaCl (6.02 x1023 formulas) has a mass of 58.44 g<span>. Concept 2. The relation between molecular (formula) mass and molar mass. To obtain one mole of copper atoms (6.02 x 1023 atoms), weigh out 63.55 g copper.</span>

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One atom of an element possesses 80 protons, 80 electrons, and 121 neutrons. Given this information, what is the atomic mass of

IRINA_888 [86]

Answer:

I think the answer is 4) 41

Explanation:

APE= atomic number, proton and the electrons are the same number

MAN= mass = atomic number - neutrons

121 - 80 = 41

i haven't done this in a while so hope this helps :)

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3 years ago

An atom has three full orbitals in its second energy level.

ICE Princess25 [194]

Orbitals am only hold two electrons each, so 3 orbitals can hold 6 electrons

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3 years ago

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An unstable nucleus which starts a decay process is called the _____.

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It Is Called The Parent Nuclide

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4 years ago

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Suppose that a certain fortunate person has a net worth of $77.0 billion ($). If her stock has a good year and gains $3.20 billi

marissa [1.9K]

Answer:

New net worth to three significant figures = $80.2 billion

Dollars are given to charity = $100,250,000

Explanation:

Net worth = $77.0 billion

stock Gains = $3.20 billion

New net worth = $77.0 billion + $3.20 billion = $80.20 billion

New net worth to three significant figures = $80.2 billion

One-eighth of a percent = (1/8 x 1) / 100 = 0.00125

Dollars are given to charity = 0.00125 X $80.2 billion = $100,250,000

$80,200,000,000/100 = $802,000,000

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3 years ago

Which of these agreements has goals of peace and shared scientific research?

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Option C, Antarctic Treaty System, is the right answer.

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