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inysia [295]
2 years ago
12

3. A girl ran 105 metres in 15 seconds. What was her speed

Chemistry
1 answer:
sweet [91]2 years ago
5 0

Answer:

7 meters per second was her speed

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Answer:

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6 0
3 years ago
A sample of nitrogen occupies 10.0 liters at 25°C and 98.7 kPa. What would be the volume at 20°C and 102.7 kPa?
krek1111 [17]
To solve the problem, we assume the sample to be ideal. Then, we use the ideal gas equation which is expressed as PV = nRT. From the first condition of the nitrogen gas sample, we calculate the number of moles.

n = PV / RT
n = (98.7x 10^3 Pa x 0.01 m^3) / (8.314 Pa m^3/ mol K) x 298.15 K
n = 0.40 mol N2

At the second condition, the number of moles stays the same however pressure and temperature was changed. So, the new volume is calculated as follows:

V = nRT / P
V = 0.40 x 8.314 x 293.15 / 102.7 x 10^3
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7 0
3 years ago
scientists often look for and attempt to explain patterns in nature. explain why patterns are important
Ronch [10]

patterns are important because they prove life has meaning ( or if you mean  

Scientifically  is is that the ability to recognize and create patterns help scientists make predictions based on there observations.

8 0
3 years ago
In nature amino acids exist in what type of conformation?
liberstina [14]

Answer:

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Explanation:

7 0
3 years ago
PLEASE HELP: To most humans, the chemical PTC tastes very bitter. The ability to taste it is a dominant trait. People who can’t
algol13
A simply because of I'm a pretty good guesser, Hope this helps.
3 0
3 years ago
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