What is the calorie difference between a carbohydrate, fat and protein?
A carbohydrate has 4 kcal/ gram, protein has 4 kcal/ gram and fat has 9 kcal/ gram.
Macey has 24 apples, and gives 1/3 to her friend Patricia. She then eats 1/4 of her remaining apples. How many apples does she have left after she ate her apples.
Macey has 12 apples left.
What is the difference between a proton and an electron?
A proton is a positive ion within a molecule. An electron is a negative ion within a molecule. The protons and neutrons make of the nucleus, while electrons surround the nucleus. The number of protons in an element is equal to the atomic number of that element. For neutrally charged elements, the charge of the proton and electron are the same but opposite charges.