Answer:
C3H8 + 5O2 → 3MgO + 2NH3
Zn + 2HCl → ZnCl2 + H2
Ca(OH)2 + 2H3PO4 → Ca3(PO4)2 + 6H2O
4Al + 3O2 → 2Al2O3
Step-by-step explanation:
I have the exact same question and I got the answers correct.
Answer:
Below in bold
Step.-by-step explanation:
It consists of 5 isosceles triangles of equal sides 4 cm and vertex angles 360 / 5
= 72 degrees.
Area of 1 triangle = 1/2 * 4^2 *sin 72
Area of the whole pentagon = 5 * 1/2 *4^2 * sin 72
= 38.04 cm^2.
No it is no possible because he would have had to had completed both laps in the time it took him to complete his first lap, but because he has already used that time, it is impossible.
V that is potential diff is equal to current multiplied by resistance. This snows that v is proportional to current directly