Chemistry, 09.11.2020 06:10 mariahchaparro08
The molar mass of an insecticide dibromoethane is 18.79 g/
mol its molecular formula is C2H, B12 What is the percent
composition of bromine in dibromoethane?
Answers: 2
Chemistry, 22.06.2019 16:00
If 15 drops of ethanol from a medical dropper weight 0.60g, how many drops does it takes from a dropper to dispense 1.0ml of ethanol? the density of ethanol is 0.80g/ml
Answers: 1
Chemistry, 22.06.2019 16:50
Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.
Answers: 1
Chemistry, 22.06.2019 19:00
Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions
Answers: 3
The molar mass of an insecticide dibromoethane is 18.79 g/
mol its molecular formula is C2H, B12 Wh...
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