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antoniya [11.8K]
2 years ago
12

What is the mass of one mole of NaCl?

Chemistry
1 answer:
vampirchik [111]2 years ago
5 0

Answer:

Sodium has an atomic weight of 22.990, and chlorine an atomic weight of 35.45. Therefore the mass of NaCl is 58.44 g/mol.

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Which one of the following is a correct representation of an alpha particle?
Alex Ar [27]

Answer:

₂He⁴  

Explanation:

Alpha radiations are emitted as a result of radioactive decay. The atom emit the alpha particles consist of two proton and two neutrons. Which is also called helium nuclei. When atom undergoes the alpha emission the original atom convert into the atom having mass number less than 4  and atomic number less than 2 as compared to parent atom the starting atom.

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Alpha radiations can travel in a short distance.

These radiations can not penetrate into the skin or clothes.

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₉₂U²³⁸   →   ₉₀Th²³⁴  + ₂He⁴  + energy

6 0
3 years ago
What numbers are shown in the symbol for a radioactive nuclide
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The atomic # and the mass #. 
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2 years ago
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What is the mole ratio needed to determine the mass of phosphorus trifluoride produced from the reaction of 120 g of phosphorus
Vitek1552 [10]

Answer:

\frac{4molPF_3}{1molP_4}

Explanation:

Hello

In this case, given the reaction:

P_4(s)+6F_2(g)\rightarrow 4PF_3(g)

It means that since the coefficients preceding phosphorous and phosphorous trifluoride are 1 and 4, the correct mole ratio should be:

\frac{4molPF_3}{1molP_4}

Because given the mass of phosphorous it is convenient to convert it to moles and then cancel it out with the moles on bottom of the mole ratio.

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8 0
2 years ago
A compound contains sulfur, oxygen, and chlorine. Analysis shows that it contains by mass 26.95% sulfur and 59.61% chlorine. Wha
sladkih [1.3K]

Answer:

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Explanation:

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Step 2: Divide all the numbers by the smallest one.

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Warm air lifted over a moving cold air mass will produce a front
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Answer:

cold

Warm air lifted over a moving cold air mass will produce a _____ front.

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3 years ago
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