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lara [203]
3 years ago
10

Whatcha energy transfer occurs when a student blows a whistle? The top one

Chemistry
2 answers:
Scorpion4ik [409]3 years ago
6 0
D: Mechanical to Sound
Firlakuza [10]3 years ago
6 0
Its C
for sure
because it goes from heat to mechanical

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miv72 [106K]
There is more surface area so there’s more to react with all together
7 0
3 years ago
Determine the volume occupied by 2.5 mol of a gas at 18 °C if the pressure is 81.8 kPa?
mars1129 [50]

Answer:

74 litre

Explanation:

using ideal gas eqation PV=nRT

here P(pressure)=81.8 kPa =81.8×10^3 Pa

moles=2.5

temperature=273.15+18=291.15K

Gas constant R=8.314m^3-Pa/K-mol

now, V=nRT/P = 8.314×2.5×291.5/81.8×10^3 ≈74litre

✌️;)

3 0
3 years ago
Please Help mE!!!!!!!!!!!!!!!!!!!!!!
JulijaS [17]
The answer is an ENDOTHERMIC REACTION.
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8 0
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The metal sodium is obtained by electrolysis of common table salt (sodium chloride, nacl). how much sodium chloride needs to be
Bogdan [553]
Solve first for the number of moles of sodium given that the mass is 2500 g by dividing the given mass by the molar mass of sodium. 
                         moles sodium = 2500 g / 23 g/mol
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Since in every mole of NaCl, there is only one mole of sodium then, we conclude that there are also 108.7 moles of NaCl. Multiplying the number of moles to the molar mass of sodium chloride (58.44), the answer would be 6,352.17 grams.
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Where does secretion occur in the nephron?
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