An atom has no overall charg if it contains equal number of

What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?

The first element on the periodic table of elements is carbon. a. true b. false

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.)