A 1-L sample contains 26g of casein (퐶8퐻12푂3푁2). If 18 g of bacterial cell tissue (퐶5퐻7푁푂2)is synthesized per 50 g of casein consumed, determine the amount of oxygen required to complete the oxidation of all the casein present in the sample to end products and cell tissue. The end products of the oxidation are carbon dioxide (퐶푂2), ammonia (푁퐻3

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.)

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.