When melted iron solidifies without any change in temperature, what is happening on the atomic level?

Which formula can be used to calculate the molar mass of ammonia (nh3)? molar mass of n + molar mass of h 3 × molar mass of n + molar mass of h molar mass of n + 3 × molar mass of h 3 × molar mass of n + 3 × molar mass of h

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3