A 100.0 ml sample of 0.20 m hf is titrated with 0.10 m koh. determine the ph of the solution after the addition of 300.0 ml of koh. the ka of hf is 3.5 × 10-4.

What must happen before a body cell can begin mitotic cell division

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

In france, grapes are 1.95 euros per kilogram. what is the cost of grapes, in dollars per pound, if the exchange rate is 1.14 dollars/euro? (2.6)