Answer:
mass of hydrogen in lake = 11.19% of 12
= 1.3428
check if question is correct or not
Explanation:
Answer:
1. 2.510kJ
2. Q = 1.5 kJ
Explanation:
Hello there!
In this case, according to the given information for this calorimetry problem, we can proceed as follows:
1. Here, we consider the following equivalence statement for converting from calories to joules and from joules to kilojoules:

Then, we perform the conversion as follows:

2. Here, we use the general heat equation:

And we plug in the given mass, specific heat and initial and final temperature to obtain:

Regards!
Answer:
the first energy level is closest to nuclear the second energy level is a little farther away than the first
Answer: limiting reactant controls the amount of product formed in a chemical reaction.
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Answer:
The correct answer is 333.8 J
Explanation:
Ice (water in solid state) melts at 273 K (0ºC). During the phase change from solid to liquid, water absorbs 6.01 KJ per mol until it melts completely. To calculate the heat absorbed, we first have to convert the mass of water (1 g) to mol by using the molecular weight of water (H₂O):
Molecular weight of water= 2 x molar mass H + 1 x molar mass O
Molecular weight of water= 2 x 1 g/mol + 16 g/mol= 18 g/mol
mol ice=
= 0.055 mol
heat= 0.055 mol x 6.01 KJ/mol= 0.3338 KJ
Finally, we convert KJ to J (1 KJ= 1000 J so we multiply by 1000):
0.3338 KJ x 1000 J/1 KJ= 333.8 J