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MrRa [10]
3 years ago
9

If you know the answer I could really use some help rn!

Chemistry
1 answer:
FinnZ [79.3K]3 years ago
8 0
Gamma rays contain much more energy (most penetrating) than radio waves because they have a greater frequencies.
Radio waves are the electromagnetic waves with the longest wavelengths (1dm to 100 km), lowest frequencies (3kHz to 3GHz) and lowest energy (124 peV to <span>12,4 μeV).
</span>Gamma rays are the electromagnetic waves with the shortest wavelengths (1 pm), highest frequencies (300 EHz) and highest energy (1,24 Me<span>V</span>).
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What is the role of starch in the titration reaction?
Iteru [2.4K]
They all have gods Dudu
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2 years ago
Calculate the final temperature of 35 mL of ethanol initially at 20 ∘C upon absorption of 720 J of heat. (density of ethanol =0.
Natalija [7]
The specific heat capacity of ethanol is 2.46 joules per gram.
Now, we may use the equation:
Energy = mass * specific heat capacity * change in temperature

Here we may substitute:
mass = density * volume

Energy = density * volume * specific heat capacity * change in temperature
720 = 0.789 * 35 * 2.46 * ΔT
ΔT = 10.6

The final temperature will be
20 + 10.6
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4 0
4 years ago
Calculate the percent of Cl in KClO4
sergejj [24]

Answer:

25.6 %.

Explanation:

  • To calculate the % of Cl in KClO₄:

<em>% Cl = [Atomic mass of (Cl)/molar mass of KClO₄] x 100</em> = [(35.5 g/mol)/(138.55 g/mol)] x 100 = <em>25.62 % ≅ 25.6 %.</em>

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4 years ago
Determine the budget for tge fitness event.consider the attendance (should tou ask for registration fee.give shirts etc)
Anna007 [38]
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4 0
3 years ago
A canister of acetylene has a volume of 42 l the temperature of the acetylene is 305 k and the pressure is 780 torr determined t
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PV = nRT

1.026atm * 42l = n * 0.0821L atm/mol K * 305K

n=1.72.

1.72 molecules.
4 0
3 years ago
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