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How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

How many moles of al3+ ions are in 1.25 moles of al2o3

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.