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lidiya [134]
3 years ago
12

Please help look at the imagewhich one is it

Chemistry
1 answer:
BabaBlast [244]3 years ago
8 0

it is D because im in 8th grade and I know

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A 1.00 L flask is filled with 1.15 g of argon at 25 ∘C. A sample of ethane vapor is added to the same flask until the total pres
tatiyna

Answer:

The partial pressure of argon in the flask = 71.326 K pa

Explanation:

Volume off the flask = 0.001 m^{3}

Mass of the gas = 1.15 gm = 0.00115 kg

Temperature = 25 ° c = 298 K

Gas constant for Argon R = 208.13 \frac{J}{kg k}

From ideal gas equation P V = m RT

⇒ P = \frac{m R T}{V}

Put all the values in above formula we get

⇒ P = \frac{0.00115}{0.001} × 208.13 × 298

⇒ P = 71.326 K pa

Therefore, the partial pressure of argon in the flask = 71.326 K pa

4 0
3 years ago
Categorize the following materials: bronze alloy, mouse growing an ear on its back, porcelain dentures
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Bronze alloy and porcelain dentures
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Which of the following represents a 1.00 M (M = mol/dm3) aqueous solution of glucose (C6H12O6)?
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The answer would be c
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A metallic substance has a volume of 10.5 cm' and a mass of 81.9 grams.What is the density of this substance
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Answer:

7.8 grams per cm

Explanation:

to get density you need the mass and volume then you divide them so

81.9 grams/10.5 cm gives 7.8g/cm

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What is the name of this element?
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Tungsten

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