The accepted value of density of a penny is 7.2 g/mL. You are testing this in a lab. Your results show that the total water displacement was 3.4 x 10-2 L, the total weight of the penny is 2.5 g. What is your experimental value for the density of the penny

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.

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull

The appropriate concentration for an iodine sanitizer is