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Compute the number of grams of sodium in 5.0 g of each of the subsequent sodium-containing food additives.
NaCl (table salt)
Na3PO4 (sodium phosphate)
NaC7H5O2 (sodium benzoate)
Na2C6H6O7 (sodium hydrogen citrate)
what is the purpose of a buffer system? b)what is the purpose of NaNO2 in the buffer? c)how does the buffer react when some H3O^+ is added? d)how does the buffer react when some OH^- is added?
For carbon tetrachloride, the boiling point constant is 5.03°C·kg/mol, and the boiling point of pure carbon tetrachloride is 76.50°C.
Sulfur dioxide gas reacts with oxygen to produce gaseous sulfur dioxide. when the pressure on the reaction at equilibrium is lowered, the equilibrium will
Typically, the concentration of hydronium, H+, or hydroxide,OH- , ions in an aqueous solution is less than 1M . It is not uncommon to have hydronium ion concentrations that are much smaller
The percent ionic character/percent covalent character varies from compound to compound. Choose the compound with the highest covalent character and the one with the highest ionic character from PbBr2 MgCl2 CO2 and O3.
The vaporizaation for the compound is 24.75 kJ/mol. Calculate the heat required to convert 50.0 g of freon 11 from liquid at -50 C to a gas at 50 C.
Which of the following is always true for a spontaneous process at constant temperature. A) Delta S system + Delta S surroundings = q/T B) Delta S > 0 C) Delta S = q/T D) Delta system + Delta S surroundings > 0 E) Delta S
If a reaction vessel initially contains only CO and NH3 at concentrations of 1.00 M and 2.00 M, respectively, what will the concentration of HCONH2 be at equilibrium?
61.0 ml of anbsp solution1.60 m is diluted to a volume of 208 ml. anbsp portion of that solution104-ml is diluted using
If a portion of a tablet weighing 0.365g neutralizes 2.30 x 10 -4 moles of hydrochloric acid, how much acid would the whole tablet neutralize if it weighs 1.84g
what is the UV absorption region of uracil,5-bromo uracil,5-chloro uracil, 5-iodo uracil, 6-methyl uracil?
Calculate the reaction rate for the reaction CLO2 and OH^- at 0°C. when the initial CLO2 and OH^- concentrations are 8.25 x 10^-3mol/L and 5.35 x 10^-2mol/L, respectively.
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