Select all of the answers that apply. Examine the following rock strata. Using the laws of biostratigraphy, which of the following statements are true about the relative ages of the rock layers and intrusion? Without additional information, you cannot tell the relative ages of intrusion A and rock layers C, D, and E. Layer B is older than layers C, D, and E. Layers C, D, and E are older than intrusion A. Intrusion A is older than layers C, D, and E. Layer B is older than intrusion A. Intrusion A is older than all of the rock layers.

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]

Use the periodic table to find the molar mass of each element. molar mass h = g/mol molar mass s = g/mol molar mass o = g/mol

What is the work done by the electric force to move a 1 c charge from a to b?