Which of the following is a physical change? CsF(s) + XeFo(s) → CsXeF;(s)
CO2 (s) → CO2 (g)
O N2 (g) + 3H2(g) → 2NH3 (g)
2H2(g) + O2(g) → 2H20 (1)
Zn(s) + 2MnO2(s) + H2O(l) → Zn(OH)2(s) + Mn2O3(s)

2b2t

explanation:

2b2t

you didnt put any of the following

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.