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kogti [31]
2 years ago
6

A sample of a solid labeled as NaCl may be impure. a student analyzes the sample and determines that it contains 75 percent chlo

rine by mass. Pure NaCl contains 61 percent chlorine by mass. which of the following statements is consistent with the data?
a- the sample contains only NaCl
b- the sample contains NaCl and NaI
c- the sample contains NaCl and KCl
d- the sample contains NaCl and LiCl
Chemistry
1 answer:
Evgesh-ka [11]2 years ago
5 0

Answer:

D

Explanation:

The sample must contain impurity that is lower in atomic mass to sodium and since potassium has higher atomic mass to sodium, the answer is the sample contains NaCl and LiCl. We are sure already that the sample is not pure which rules out  option a and option b contains sodium iodide which cannot contribute to the increase in chlorine

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garri49 [273]

Answer:

Mg would blow off. AI would be affective to copper but not to MG

Explanation:

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1 year ago
In May 2016, William Trubridge broke the world record in free diving (diving underwater without the use of supplemental oxygen)
Brrunno [24]

Answer:

The volume that this same amount of air will occupy in his lungs when he reaches a depth of 124 m is - 0.27 L.

Explanation:

Using Boyle's law  

{P_1}\times {V_1}={P_2}\times {V_2}

Given ,  

V₁ = 3.6 L  

V₂ = ?

P₁ = 1.0 atm

P₂ = 13.3 atm

Using above equation as:

{P_1}\times {V_1}={P_2}\times {V_2}

{1.0\ atm}\times {3.6\ L}={13.3\ atm}\times {V_2}

{V_2}=\frac{{1.0}\times {3.6}}{13.3}\ L

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<u>The volume that this same amount of air will occupy in his lungs when he reaches a depth of 124 m is - 0.27 L.</u>

8 0
2 years ago
Three moles of helium gas (molar mass MM = 4.00 g/molg/mol) are in a rigid container that keeps the volume of the gas constant.
Anastaziya [24]

Answer:

The rms speed of the gas atoms after 3600 J of heat energy is added to the gas = 1150 m/s.

Explanation:

Mass of 3 moles of Helium = 3 moles × 4.00 g/mol = 12.00 g = 0.012 kg

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Initial average kinetic energy of the gas = (1/2)(0.012)(850²) = 4335 J

Then, 3600 J is added to the gas,

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Hope this Helps!!!

8 0
1 year ago
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Shkiper50 [21]
The total energy can be found by adding the different energies:
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2 years ago
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Mandarinka [93]

Answer:

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