A bumblebee flies with a ground speed of 15.0 m/s . Calculate its speed in km/h.
2 answers:
Answer:
Explanation:
This is a problem of conversion of units.
First of all you need to take the quantity the problem gives you and write it down with the units:
Then you need to find the conversion factor for the units you need to convert:
In this case you need to convert from meters (m) to kilometers (km) and from seconds (s) to hours (h), so you have the following conversion factors:
- To convert from meters (m) to kilometers (km):
-To convert from seconds (s) to hours (h):
Then you should put the conversion factors in the same expression, so:
Finally you multiply the numerators and the denominators and divide the results:
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Answer : The rate of effusion of sulfur dioxide gas is 52 mL/s.
Solution :
According to the Graham's law, the rate of effusion of gas is inversely proportional to the square root of the molar mass of gas.
or,
..........(1)
where,
= rate of effusion of nitrogen gas =
= rate of effusion of sulfur dioxide gas = ?
= molar mass of nitrogen gas = 28 g/mole
= molar mass of sulfur dioxide gas = 64 g/mole
Now put all the given values in the above formula 1, we get:
Therefore, the rate of effusion of sulfur dioxide gas is 52 mL/s.