A sample of 78.0 g of methanol at 12.0 °C is heated to 60.0 °C, just below the boiling point of methanol, and then cooled to -50.0 °C. What is the overall heat flow? The specific heat capacity of
methanol is 2.48 Jg='K-!.

Which of the following is not one of the steps in the scientific method a. hypothesize b. summarize c. analyze d. familiarize

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]

Moving force of air flows from areas of high pressure to areas of low pressure true or false