Determine the molecular formula for a compound that has a Mass of 392.2 grams and consists of 0.70g of chromium,0.65g of sulfur and 1.30 grams of oxygen​

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

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]