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Marysya12 [62]
3 years ago
14

What is the mass of 19.5g

Chemistry
1 answer:
ratelena [41]3 years ago
3 0

Answer:

I think 0.195 kg, if not then the question is not complete

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Is pentacosane a molecular compound?
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Yes

Explanation:

A molecular compound is that one which is composed of molecules formed by atoms of two or different elements. A pentacosane is an alkaline made of unbranched chain of 25 carbons atoms. It has applications in plant metabolite. The molecular formula of pentacosane is C₂₅H₅₂

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A sample of SO2 gas occupies 45.6 L at 373 K and 3.45 atm. This sample contains how many moles of oxygen atoms?
lisov135 [29]

Answer:

10.28 mol

Explanation:

S + 2O = SO2

(atm x L) ÷ (0.0821 x K)

(3.45 x 45.6) ÷ (0.0821 x 373)

=5.13726

Then round it to significant figures

=5.14

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4 years ago
What is the colour of Bromine
nydimaria [60]
Reddish brown colour
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3 years ago
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By how much will the water temperature increases if 1046 J of heat energy are added. The specific heat of water is 4.184 J/g • °
Brilliant_brown [7]

Answer:

Option A

250 degrees Celcius

Explanation:

If 1046J of heat energy is added to water, the water will experience a rise in temperature, at a rate that is directly proportional to its specific heat capacity.

Mathematically, this can be seen as Q=C\Delta T

Where C = specific heat of water = 4.184 J/g • °C.

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Therefore, the increase in temperature that will be experienced, is for 250 degrees Celcius

8 0
3 years ago
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