A chemist named Leonard is using a formic acid with a density of to dissolve a certain solute. What is the mass of this solvent if he used of formic acid?

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glorysoft2Lv10

12 Sep 2022

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Related questions

A 0.250 g sample of formic acid is dissolved in about 50 mL of water and titrated with 0.150 M NaOH solution. A pH of 3.74 is reached when 18.50 mL of sodium hydroxide has been added to the acid solution. What is the molar mass of formic acid given this data?

How would you prepare 250 mL if a .20 M formate buffer with a pH of 4.0 using formic acid (HCH02) and sodium formate (NaCHO2)? formic acid pka= 3.8

Ans: 1.38 g formic acid + 1.36 g NaCHO2

How Would you prepare the buffer above using just sodium formate?

Ans: 3.4 g

How did they get these answers?!?! please explain...