Calculate the pH of the buffer that results from mixing 57.9 mL of a 0.278 M solution of HCHO2 and 17.1 mL of a 0.535 M solution of NaCHO2. The Ka value for HCHO2 is 1.8×10−4.

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

a corroding iron, if that's one of your choices

gas

explanation:

smoke is the matter of a gas