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olganol [36]
3 years ago
11

A student observed a chemical reaction in which the mass of the products was measured to be less than the mass of the reactants.

How can this be explained?
Chemistry
1 answer:
nika2105 [10]3 years ago
5 0

There chemical reactions that can realise or absorb gas to the atmosphere. This means it is harder or impossible to measure it with normal weighing devices and normal taring equipment. As a principal in chemical reactions we have conservation of mass.

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An ideal gas in a 1.25-gallon container is at a temperature of 125 degrees Celsius and pressure of 2.5 atmospheres. If the gas i
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You will need the equation PV = nRT

P = Pressure in kPa
V = Volume in L
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T = Temperature in Kelvin 

First convert 2.5 atm into kPa:

2.5 X 101.3 = 253.25 kPa

Convert 125 Celsius into Kelvin:

125 + 273 = 398 K

Convert Gallons to Litres:

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Plug your values into the equation to solve for n:

(253.25)(4.74) = n(8.314)(398)

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3 years ago
An enzyme is discovered that catalyzes the chemical reaction SAD ↔ HAPPY A team of motivated researchers sets out to study the e
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Answer:

The K_{m} of a substrate will be "10 μM".

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The given values are:

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On putting the estimated values, we get

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⇒  K_{m}+40=50

On subtracting "40" from both sides, we get

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Cacl2 is an example of
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