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nevsk [136]
3 years ago
15

What do you mean by environment conservation?​

Chemistry
1 answer:
BARSIC [14]3 years ago
3 0

Explanation:

Environment conservation is an umbrella term that defines anything we do to protect our planet and conserve its natural resources so that every living thing can have an improved quality of life. bolivianouft and 7 more users found this answer helpful.

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What type of animal might become preserved in amber
goldfiish [28.3K]
Insect's or Bugs preserved in Amber
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3 years ago
The freezing point of ethanol, CH3CH2OH, is -117.300 °C at 1 atmosphere. Kf(ethanol) = 1.99 °C/m
MAXImum [283]

Answer : The molecular weight of this compound is 891.10 g/mol

Explanation :  Given,

Mass of compound = 12.70 g

Mass of ethanol = 216.5 g

Formula used :  

\Delta T_f=i\times K_f\times m\\\\T_f^o-T_f=i\times T_f\times\frac{\text{Mass of compound}\times 1000}{\text{Molar mass of compound}\times \text{Mass of ethanol}}

where,

\Delta T_f = change in freezing point

T_f^o = temperature of pure ethanol = -117.300^oC

T_f = temperature of solution = -117.431^oC

K_f = freezing point constant of ethanol = 1.99^oC/m

i = van't hoff factor = 1   (for non-electrolyte)

m = molality

Now put all the given values in this formula, we get

(-117.300)-(-117.431)=1\times 1.99^oC/m\times \frac{12.70g\times 1000}{\text{Molar mass of compound}\times 216.5g}

\text{Molar mass of compound}=891.10g/mol

Therefore, the molecular weight of this compound is 891.10 g/mol

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3 years ago
Which law relates temperature, pressure, volume, and the number of moles of a gas under perfect conditions?
kozerog [31]
Ideal Gas law PV=nRT

P- pressure(atm)
V-volume( liter)
R- gas constant
T- temperature(kelvin)
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Read 2 more answers
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The products have more energy than the reactants..does that describe an exothermic reaction?
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