The mass of an object is 2.00 g with a volume of 1.50 mL. The density of this object is A. 1.33 g/mL
B. 0.75 g ml
C. 3.00 g/mL
D. 1.00 g ml

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.

Select the most likely product for this reaction: koh(aq) + co2(g) – ? k2co3(aq) + h2o(1) k(s) + h2(g) + o2(g) k(s) + co3(9) +h2

Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.