Who was the first to propose the existence of atoms? john dalton democritus joseph proust ernest rutherford

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

What must happen before a body cell can begin mitotic cell division

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.)