. Stella thinks that if people are exposed to ultraviolet light then they are more likely to get skin cancer. Stella designs an experiment where in sample A consisted of people who were exposed to ultraviolet light and sample B consisted of people who were not. Control Group-

Independent variable –

Dependent variable – Skin cancer

Calculate the molarity of 48.0 ml of 6.00 m h2so4 diluted to 0.250 l .

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

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.