How much heat is required to raise the temperature of 6.2 x 102 g of aluminum by 20°c (specific heat of aluminum =0.21 cal/g°c? show all work for credit.

The heat required to raise the temperature of a certain mass of sample to a specific temperature change, we use the formula mCpΔT where m is mass, Cp is the specific heat of the substance and ΔT is the temperature change. In this case, we substitute and form 6.2 x102 g x 0.21 cal/g C *20 C equal to 2604 calories.

Which metal is less dense

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later