A 10 g sample of a compound that consists of carbon and hydrogen is found to consist of 7.99 g of carbon and 2.01 g of hydrogen. What is the empirical formula and molecular formula of this compound?

(Molar mass is 30.07 g/mol)

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change

What term describes technology that operates on an atomic level

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.