How many moles are there in a 2,500 cm 'sample of oxygen at a temperature of 24 °C and a pressure of 125 kPa?

Explanation:

using the formula pv=nRt where p= pressure =125 v= volume =2500= 25.oom3 to meter n = mumber of moles =? T= temperature = 24 =24+273=297k

which is given as R so inputting the values we have 125×25=n×8.3×297 3125=2465.1n dividing all with the coefficient of n we have

1.27= n therefore no of moles =1.27

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.

This did i unseated, sorry