How does one determine a percent composition from an empirical formula? O A. Divide the total mass of each element by the mass of the Compound and multiply by 100% OB. Divide the atomic mass of the element by its subscript and multiplyby 100% OC. Divide the mass of the compound by the atomic mass of the element and multiply by100% O D. Divide the subscript of the element by the mass of the element and multiply by 100%

Which of the following electromagnetic waves can create ions?

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons

Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. she placed a ray box in front of a mirror. she changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light. which of the following is the dependent variable in this experiment? the mirror used to reflect the light the ray box used as the source of light angle at which the light from the ray box strikes the mirror angle at which the mirror reflects the light from the ray box