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-BARSIC- [3]
3 years ago
14

How many moles of oxygen will occupy a volume of 2.50 at 1.20 atm and 25.0 c?

Chemistry
1 answer:
pav-90 [236]3 years ago
7 0

Answer:

The number of mol of oxygen is 0, 123

Explanation:

We use the formula PV=nRT. We convert the temperature in Celsius into Kelvin. 0°C=273 K---> 25°C=273+25= 298K

PV=nRT---> n=(PV)/(RT)

n= (1,20 atm x2,50 L)/(0,082 l atm/  K mol  x 298K)

<em>n=0,122769684 mol</em>

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Answer:

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Meterologists track the location of Jet Streams. How do jet streams influence the weather? *
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Answer:

Explanation:

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2 years ago
Old thermometers contained very small amounts of mercury. The mercury in the photo has a melting point of -38.8 degrees Celsius.
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Answer:

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This one makes the most sense out of the answers.

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3 years ago
Natasha and Reanna observe a large airplane in the troposphere. Which experimental setup below would best determine how changing
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Read 2 more answers
For a tablet containing 500. mg of vitamin C, calculate how many ml of 0.095 M NaOH is required to reach the equivalence point.
Gala2k [10]

Answer:

mL of NaOH required =29.9mL

Explanation:

Let us calculate the moles of vitamin C in the tablet:

The molar mass of Vitamin C is 176.14 g/mole

moles=\frac{mass}{molarmass}=\frac{500mg}{176.14}=\frac{0.5}{176.14}=0.0028

Thus we need same number of moles of NaOH to reach the equivalence point.

For NaOH solution:

moles=MolarityXvolume=0.095Xvolume

0.00283=0.095Xvolume

volume=0.0299L=29.9mL

7 0
3 years ago
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