Answer: (1)CaSO4 -> (2)O2 + (1)CaS
Explanation: edge 2020 chem
if i am correct the volume of nitrogen gas has to equal to molecules density, making the substance 1.27 liters :)
Answer:
The minimum number of boxes of pencils to be ordered is 630 boxes.
Explanation:
Since a pupil uses averagely 9.3 pencils
and a box contains 12 pencils,
the school enrollment is also 812
school's enrollment x average use of pencil per student
__________________________________________
number of pencils in a box
812 x 9.3 = 7551.6
7551.6 /12 = 629.3
Having a total number of 630 boxes of pencils to be ordered.
