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A rolaids tablet contains calcium carbonate which neutralizes stomach acid If 44.55mL of 0.448 M hydrochloric acid is required to neutralize one tablet how many milligrams of calcium carbonate are in a rolaids tablet?
CaCO3(s) + HCl (aq) -----> CaCl2 (aq) + H2O (l) + CO2 (g)
Take frequencies from sections on absorptions of selected functional groups in the text. If a functional group is not discussed specifically, use frequencies from Which compound will exhibit this absorption?
A 0.1019g portion of an aspirin tablet was dissolved in sufficient water to prepare 1.000L of solution. A pipet was used to transfer 10 mL of the solution to a 100 mL volumetric flask.
I understand the rules for significant figures with multiplication/division, and adding/subtracting. But I am unsure of what to do when there is both multiplication and/or division, and adding and/or subtracting in the same question?
A 4.1089 g piece of aluminum wire with a circular cross section is 42.06 cm long and has a density of 2.6989 g/cm3 what is the volume of the wire in cm3
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.
Carbon tetrachloride may react with oxygen to produce chlorine and carbonyl chloride.2CCl4(g) + O2(g) 2COCl2(g) + 2Cl2(g); Kc = 9.9 × 10^51. What is Kc for the following equilibrium? COCl2(g) + Cl2(g) CCl4(g) + ½O2(g)
The density of an unknown substance was determined by adding a weighed piece to a graduated cylinder containing 37.3 mL of water. After the substance was submerged the water level was measured at 46.2 mL. The substance weighed 100.0 g. What was it..
What is the pH of a solution formed by dissolving 0.100 mol of an acid with a Ka of 1.750x(10 to the -5th) and 0.200 mol of the sodium salt of the same acid in a total volume of 1.000L
how much heat must be added to 36.2g sample of iron to increase its temperature by 250.0 degree C.
suppose that you are performing an extraction of an aqueous solution with an organic solvent that has a density less than water. Propose a method to identify and collect only the organic solvent. Assume that water and your solvent of interest are ..
Suppose that 28g of each of the following substances is initially at 28.0 degrees celcius. What is the final temperature of each substance upon absorbing 2.45 kJ of heat?
how do the tests on known solutions containing cations and anions make it possible for you to identify the cation or anions
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