1. Calculate the slope of each line using the points given. Graph each of the lines and determine if each is a positive or negative relationship. If you use graph paper, please take a photo and upload to your document. 2. Which graph(s) can not be a true measure of density? Why?

a. (24cm3, 6.0g), (12cm3, 24g)

b. (5.0cm3, 6.0g), (13cm3, 15g)

c. (5.0cm3, 4.0g), (25cm3, 24g)

d. (24 cm 3 , 8.0 g), (12 cm 3 , 22 g)

Answer asap need it by wednesday morning carry out the following calculations on ph and ka of from data. i. calculate the ph of 0.02m hcl ii. calculate the ph of 0.036m naoh iii. calculate the ph of 0.36m ca(oh)2 iv. calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 v. calculate ka for weak acid ha which has a ph of 3.65 at 0.30m concentration vi. calculate the ka of a solution made by mixing 15.0 cm3 0.2m ha and 60.0 cm3 0.31m a-. [ph= 3.80] vii. calculate the ph of a solution made by mixing 15.0 cm3 0.1m naoh and 35.0 cm3 0.2m hcooh. [ka = 1.82 x 10-4 m]

How many moles are contained in 5.6 l of h2 at stp

Use the de broglie's wave equation to find the wavelength of an electron moving at 7.3 × 106 m/s. show your work. note: h = plank's constant (6.62607 x 10-34 j s)