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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)
Give the reaction scheme, showing the products formed (before hydrolysis) when one equivalent of ethylmagnesium bromide is treated with one equivalent of 5-hydroxy-2-pentanone.
Suppose y was measured five times and average of these five measurements was 3.75. What is the uncertainty in x based on these five measurements?
A solution formed by mixing 11.0 ml of 0.110 M HBr with 25.0 Ml of 0.190 M HCl. what is the ph of the strong acid?
1. sulphur iv oxide reacts with oxygen to form sulphur vi oxide.nbspa explain why we cant assume that the pressure and
at 500degc and 93.2 kpa the mass density of sulfur vapour is 3.710 kg m-3. what is the molecular formula of sulfur
What is the total quantity of heat required to do this? The melting point of Pb is 327.4 degrees celsius; its heat of fusion is 4.774 kJ mol-1; its average heat capacity in the temperature range from 51 to 327.4 deg. celsius is 0.134 J g-1K-1.
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5.
Determine the concentration, in moles per liter, to which the hydroxide concentration must be raised to produce a concentration of 0.200 mg/L of copper if the starting concentration is 2.00 mg/L. Estimate the resultant pH.
Calculate q, the fraction of solute that would remain in the water under each of the following extraction conditions: Three extractions with 100 mL of ether.
A sample containing 0.35 mol argon gas at a temperature of 13 C and a pressure of 568 torr is heated to 56 C and a pressure of 897 torr. A. What is the original volume of the gas? B. What is the new volume of the argon gas?
A 2.60 mole quantity of NOCl was initially in a 1.50 L reaction chamber at 400°C. After equilibrium was established, it was found that 22.0 percent of the NOCl had dissociated
The pkas of sulfuric and nitric acids are -3 and -1.3, which acid is stronger. Given your predication, write a chemical equation for the equilibrium involving reaction of sulfuric and nitric acids.
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