Why is it hard for scientists to change lead into gold? scientists would have to change the number of protons in lead atoms. scientists would have to change the number of electrons in lead atoms. scientists would have to change the number of neutrons in lead atoms. scientists would have to change the number of protons and neutrons in lead atoms.

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.

What is the chemical formula for dihydrogen monoxide

Predict the relative bond lengths of the three carbon-oxygen bonds in the carbonate ion (co2−3). what would you expect the charge to be on each oxygen? match the words in the left column to the appropriate blanks in the sentences on the right. make certain each sentence is complete before submitting your answer.