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Maslowich
3 years ago
9

Someone help with this please

Chemistry
1 answer:
Tju [1.3M]3 years ago
3 0
To me I think if the number of snakes increased, the number of rabbits decreases. Hope u got it correct ; )
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Determine the amount of heat(in Joules) needed to boil 5.25 grams of ice. (Assume standard conditions - the ice exists at zero d
Yuki888 [10]
Following are important constant that used in present calculations
Heat of fusion of H2O = 334 J/g 
<span>Heat of vaporization of H2O = 2257 J/g </span>
<span>Heat capacity of H2O = 4.18 J/gK 
</span>
Now, energy required for melting of ICE = <span>  334 X 5.25 = 1753.5 J .......(1)
Energy required for raising </span><span>the temperature water from 0 oC to 100 oC =  4.18 X 5.25 X 100 = 2195.18 J .............. (2)
</span>Lastly, energy required for boiling water = <span>  2257X 5.25 = 11849.25 J ......(3)
</span><span>
Thus, total heat energy required for entire process = (1) + (2)  + (3)
                                                                        = 1753.5 + 2195.18 + 11849.25
                                                                        = </span><span>15797.93 J 
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</span><span>Thus, 15797.93 J of energy is needed to boil 5.25 grams of ice.</span>
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3 years ago
How and why do ionic bonds form?
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Im taking lambda as x (wavelength)

m = 0.17 kg

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x= h/mv


x = 6.62 \times 10 ^{ - 34}  \div 0.17 \times 37
x =1.05 \times {10}^{ - 34}  m
5 0
3 years ago
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