ap chem
A sample of 7.45 grams of NaOH is dissolved into 609 mL of aqueous 0.250 M NaOH (as-sume no volume change). This solution is then poured into 2.18 gallons of water. (You may assume that the two volumes can be added.) What is the concentration of NaOH in the final solution? Ans...
ap
i think its suppose to be the u symbol thing.
ap
A sample of air contains 38.5 ìg/m3 of beryl- lium dust. How many atoms of beryllium are present in a room with dimensions of 8 feet by 12.9 feet by 17.1 feet? Answer in units of atoms
chemistry
i got 11.098 for the moles for the first part. so do i add .1 to that?
chemistry
How many grams of sucrose (C12H22O11) must be dissolved in 200 g water to make a solution in which the mole fraction of su- crose is 0.1? Answer in units of g
chemistry
Calculate the molality of acetone in an aqueous solution with a mole fraction for ace- tone of 0.171. Answer in units of m
chemistry
How many milliliters of 5.5 M HCl must be transfered from a reagent bottle to provide 23 g HCl for a reaction? Answer in units of mL
chemistry
What mass of MgSO4 · 7H2O is required to prepare 300 mL of a 0.61 M MgSO4 solution? Answer in units of g
chemistry
It takes 62 mL of 0.124 M KOH to neutralize 46.7 mL of H2SO4 solution. What is the concentration of the H2SO4 solution? Answer in units of moles/liter
chemistry
Calculate the molality of CsCl in a 19% by mass aqueous solution.
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