ITEMS PURCHASE COST/BUYING PRICE (Php.)
SELLING PRICE (Php)
PESO
MARK -UP
PERCENTAGE
MARK-UP
1. BIBINGKA
5.00
7.00

2. CUPCAKE
8.00
11.00

3. TURON
10.00
14.00

4. HOTCAKE
15.00
20.00

Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.

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]