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tekilochka [14]
3 years ago
6

How does a change in thermal energy affect the liquid in a thermometer?

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

the liquid will expand from the heat, and the mercury in the thermometer will rise or fall (depending if it is warming up or cooling).

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1 kilocalorie is equal to<br> calories.<br><br> 1000
rusak2 [61]

Answer:

it is equal to 1000 gram calories

8 0
2 years ago
Read 2 more answers
When the fuel mixture contained in a 1.49 l tank, stored at 750 mmhg and 298 k, undergoes complete combustion, how much heat is
Ket [755]
Get to know first how many moles in the gas:n = pV/RT= (1.013*10^5*750/760) Pa *1.49*10^-3 m^3/(8.314 J/(molK)*298) n = 0.0601 moles. 
The combustion energies  are  889 kJ/mol (methane) and 2 220 kJ (propane) x = moles methane, y = moles propane 
x*889 + y*2220 = 778 x + y = 0.0601----------- x = 0.267784 moles = 0.267784*100/0.0601 = 44.6 % y = 0.243216 moles = 0.243216*100/0.0601 = 55.4 %
4 0
3 years ago
A 50.0 −mL sample of 1.50×10−2 M Na2SO4(aq) is added to 50.0 mL of 1.28×10−2 M Ca(NO3)2(aq). What percentage of the Ca2+ remains
Norma-Jean [14]
When we have Ksp CaSO4 = 9.1x10^-6 so by substitution in Ksp formula:
Ksp CaSO4 = [Ca+2][SO4] 
1.9x10^-6   = [Ca+2][1.5x10^-2]
∴ [Ca+2] M in the solution =1.27x10^-4
when percent remaining = [Ca in solution]/[C original value] * 100
                                          = [(1.27x10^-4*(50ml+50ml)]/[1.28x10^-2*50ml]*100
                                          ≈ 2%
4 0
3 years ago
which model of an atom first introduced the idea of an nucleus? A. Dalton model, B.Thomson model, C. Rutherford model ,or D. Boh
frez [133]
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3 0
3 years ago
(110.3 g) + (45.27 g) + (54.43 g)
Darina [25.2K]

Answer:

210 grams

Explanation:

just add them all up

7 0
3 years ago
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