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Hatshy [7]
3 years ago
11

Which gas sample at STP has the same total number of molecules as 2.0 liters of CO2 (g) at STP

Chemistry
1 answer:
jek_recluse [69]3 years ago
6 0
 Avogadro's hypothesis says that 2.0 L of Cl2 (g) occupies the same volume as 2.0 L of CO2. So <span>(2.0L of Cl2 (g) 

</span>
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Convert 4.0 cm to mm.
BabaBlast [244]

Answer: 40mm

Explanation:

You would multiply 4.0 by 10.

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How many moles of neon gas are there 25.0 L of gas or 5.0°C with a pressure of 89.9 KPa?
vladimir2022 [97]
  • Volume=25L
  • Temperature=5°C
  • Pressure=89.9kPa

Now

\\ \rm\rightarrowtail PV=nRT

\\ \rm\rightarrowtail n=\dfrac{PV}{RT}

\\ \rm\rightarrowtail n=\dfrac{89.9(25)}{5R}

\\ \rm\rightarrowtail n=89.9(5)/R

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Any organism in motion possesses kinetic energy. Kinetic energy is the energy the body has while in motion.

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An atom with two protons, three neutrons and two electrons would have a mass of about how many atomic mass units?
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3 years ago
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Determine the concentration of a solution of sodium hydroxide (NaOH) using a 0.500M Potassium Hydrogen Phthalate (KHP) standard
Svetradugi [14.3K]

Answer:

0.425M NaOH assuming the volume of KHP was 25.50mL and the volume of the NaOH solution was 30.0mL

Explanation:

The KHP reacts with NaOH as follows:

KHP + NaOH → KNaP + H₂O

<em>Where 1 mole of KHP reacts per mole of KNaP</em>

<em />

That means, the moles of KHP added to the NaOH solution = Moles NaOH at equivalence point. With the moles of NaOH and the volume in liters we can find the molar concentration of NaOH.

<em>Assuming the volume added of KHP was 25.50mL and the solution of NaOH contains 30.0mL (0.0300L), the concentration of the NaOH is:</em>

<em />

<em>Moles KHP = Moles NaOH:</em>

25.50mL = 0.02550L * (0.500mol / L) = 0.01275 moles KHP = Moles NaOH

<em>Molarity NaOH:</em>

0.01275 moles NaOH / 0.0300L =

<h3>0.425M NaOH assuming the volume of KHP was 25.50mL and the volume of the NaOH solution was 30.0mL</h3>
7 0
2 years ago
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