A 60 ml solution contains 200 ppm of iron. How many milliliters of water must be added to dilute this solution to a final concentration of 30 ppm? O a 34 mi
Ob.540 ml
O G. 340 mL
d. 640 mL

A girl cycles for 3.00 hrs at a speed of 40.0 km/h. What distance did she ... A train travels at a speed of 30.0 km/hr and travel a distance of 240 km.. How long did it take the ... If a car travels 400 m in 20 seconds how fast is it going? Givens ... is in m/s2. 1. A man hits a golf ball (0.2 kg) which accelerates at a rate of 20 m/s2.

the answers would be

the first one and the second one

може ли да зареждате повече информация, моля