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Bret
Questions (10)
What are some examples of interdependent relationships that can exist within an ecosystem?
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.84/p=p+.8
I can’t figure out how to isolate p
1 answer
257 views
23.0mL of water
density of water is 1.00 g/mL 1g = 1ml 23g of water Cs of water 4.18 J/(gC) moles= 2.40g/72.0(g/mol)= .033 mass =
2 answers
564 views
given: segment HI congruent to segment GJ, segment HI parallel to segment GJ
prove: triangle GJH congruent to triangle IHJ
1 answer
2,400 views
An athlete whirls a 7.36 kg hammer tied to
the end of a 1.5 m chain in a horizontal circle. The hammer moves at the rate of 1.07
1 answer
1,279 views
How much power does a water pump exert lifting 30 kg of water at a constant velocity 20 m each second
1 answer
779 views
A 89.0 kg person stands on one leg and 90% of the weight is supported by the upper leg connecting the knee and hip joint-the
1 answer
684 views
The spout heights in the container in the figure are 15 cm, 30 cm, 45 cm, and 60 cm. The water level is maintained at a 68 cm
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1,191 views
Posted by Bret on Friday, March 16, 2007 at 10:44am.
what is the oxidation number for nitrogen in the following? NH3 NO2 1- N2
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what is the oxidation number for nitrogen in the following?
NH3 NO2 1- N2 NO2Cl N2H4 We will be happy to critique your thinking
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1,705 views
Answers (2)
Wow Pearson was messed up I was right the whole time. Thank you for replying, but your advice was missing some details. The mass of the unknown (like in my mole calculation) has to be included in the mass with the water to get the right amount of joules.
mgh=1/2mv^2 gh = 1/2v^2 9.81 x h = (0.5)(15.0 m/s)^2 9.81/9.81 x h = 56.25/9.81 h = 5.7