Question

solve this 40 points

Answer 1

when you balance the equation, you'll get
P4 + 20HNO3 ----------> 4H3PO4 + 20NO2 + 4H20

So, x = 1 and y = 20.

Answer 2

Answer:

Isobars may, thus be defined as atoms of different elements which have different atomic numbers but same mass numbers.

Isobars have different number of sub-atomic particles, electrons, protons and neutrons but they have same number of nucleons.