Chemistry

Answer all of theses questions and it must be submitted in 2 hours please be on timeQuestion 1 (2 points)What is the density of a block of unknown material with a mass of 11.90-g if the dimensions are:length = 2.2 cmheight = 1.7 cmwidth = 7.5 cmQuestion 2 (2 points)What is the density of a 16.97-g object if the dimensions of the block are:length = 12.6 mmheight = 6.8 cmwidth = 0.014 mQuestion 3 (2 points)What is the density of a 21.73-g irregularly shaped object if the initial volume of water was 23.4-mL and the volume rose to 56.0-mL after the object was added?Question 4 (2 points)A volume of water was delivered using a buret and experimentally determined to have a mass of 2.44-g.  What was the final volume of water on the buret if the inital was 0.17-mL? [assume the density of water is 1.00g/mL]Question 5 (2 points)Identify the following chemical using the information provided below:initial buret reading: 1.2-mLfinal buret reading: 10.5-mLmass: 8.184-g