How much baby food is the right amount?

My 8 month old daughter is eating stage 2 baby foods. I have looked in my books for specific amounts on how much to feed her but the books only say take out only enough for what you will use. With a 4 oz jar I take out 10-15 baby spoonfuls of food which is about 1/2 the jar and then give her formula after wards. She seems happy and full and is gaining weight so I must be doing something right. Any suggestions from the moms here.

At what age should you start teaching babies right from wrong?

My baby is 10 months and my friend has a baby the same age. When can babies tell right from wrong. She smacks her babies hand or butt. She doesn’t do it hard but I am just curious if the baby even knows what they should or shouldn’t be doing and should you start teaching them at 10 months?>?