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Artyom0805 [142]
3 years ago
8

The product of 2 × 104 cm and 4 × 10–12 cm, expressed in scientific notation is ____.

Chemistry
1 answer:
Hatshy [7]3 years ago
7 0

Answer:

b,,

Explanation:

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LIFE

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8. A 220 mL sample of helium gas is in a cylinder with a movable piston at 105 kPa and 275K. The piston
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The sample has a new pressure of 274kPa. If at 105 kPa and 275K, a 220 mL sample of helium gas is contained in a cylinder with a moving piston. The sample is pushed till it has a 95.0 mL volume and 310K .

The macroscopic characteristics of ideal gases are related by the ideal gas law (PV = nRT). A gas is considered to be perfect if its particles (a) do not interact with one another and (b) occupy no space (have no volume). Where P= pressure  V= volume and T = temperature.

From ideal gas equation

P₁V₁/T₁ =P₂V₂/T₂

105×220÷275 = P₂ ×95÷310

P₂= (105×220×310)÷(275×95)

P2= 7161000/26125

P2 = 274.105 kPa

Hence, the new pressure of helium gas is 274kPa

To know more about Ideas gas equation

brainly.com/question/28837405

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1 year ago
An unknown gas effuses 1.66 times more rapidly than CO2. What is the molar mass of the unknown gas, given that the molar mass of
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The molar mass is 16.0 grams 
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The balanced equation for photosynthesis is shown below.
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The true answer is: It's conserved because the total number of H atoms on each side is 12.
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and the last one also wrong because the total number of O atoms are equal at the two sides but not equal 2.

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