Question

Marked out of 1.00
P Flag question
A starts from a place at a
constant speed of 5 km/hr in
a particular direction. After an
hour B starts from the same
place and over takes A after
two and half hours. Calculate
the speed of B?
Select one:
O a. 8 km/hr
O b. 6 km/hr
O c. 7 km/hr
O d. 5 km/hr​

Answer 1

Step-by-step explanation:

In an experiment, 3.672 g of copper oxide gave, on reduction, 2.938 g of copper. What is mass of oxygen formed? What is the ratio of masses of copper and oxygen? (A) 0.634 g. 4:1 (B) 0.534 g 1:4 (C) 0.734 g 4:1 (D) 0.934 g 1:4