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seropon [69]
3 years ago
7

The men's world record for swimming 1500 m in a long course pool is 14 min 34.56 s. At this rate how many seconds would it take

to swim 0.700 miles
Chemistry
1 answer:
vlabodo [156]3 years ago
6 0
Distance = 1500m, time = 14min 34.56s = 14*60 + 34.56 = 874.56s

Speed = Distance / time = 1500/874.56 = 1.715 m/s

In order to swim 0.7 miles, 1 mile = 1609.344 m

Time = Distance / speed = 1609.344 m / 1.715 m/s = 938.393 seconds

938/60 = 15 minutes, 38 seconds.

= 15 minutes 38.393 seconds.
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7 0
1 year ago
what volume of hydrogen gas is evolved from a reaction between 0.52 g of Na and water? This gas is collected at 20 C and 745mmHg
guapka [62]
The  volume of  hydrogen  gas  that evolved  is   calculated  as  follows
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that  is  PV = nRT
P=745  mm hg
V= ?
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T= 20 + 273 = 293 k
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find the  moles  of Na  used
= 0.52/23=0.023  moles

write the reacting equation
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by  making  the  volume  the   subject  of  the formula
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6 0
2 years ago
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