A scientist conducts an experiment to test the theory that a vitamin could extend a person’s life-expectancy. What are the dependent and independent variables in this statement? Justify your answer.

Which of the following statements is true about planck’s law

When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)

How many neutrons does a atom of cobalt have?