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calcium carbonate , CaCO3, reacts with stomach acid (HCl, hydrochloric acid) according to the following equation: CaCO3(s) + 2HCl(aq) > CaCl2(aq) + H2O(l) +CO2(g). one tablet of tums, an antacid, contains 500.0 mg of CaCO3. if one tablet of tums is added to 20.0mL of a 0.100 M HCl solution how many liters of CO2 gas are produced at STP?
Determine the volume of 6.44*10^-2 M adenosine triphosphate (ATP) that is having 1.68 mol of adenosine triphosphate express your answers in (mL)?
A sample of air contains 0.130 ug/L SO2. Given that the density of the air sample is 1.19 g/L, calculate the SO2 content in parts per million by weight.
two naturally occurring isotopes, Re-185 (mass = 184.935 amu) and Re-187 (mass = 186.956 amu). Calculate the percent abundances of the isotopes of rhenium.
Which one of these equations describes a redox reaction?
Calculate the molar mass that would be obtained from the actual experimental data under the following conditions. The unknown is methyl propyl ether (CH3OC3H7)
Isotactic polystyrene that has a density of 1.12 g/cm3 and a weight-average molecular weight of 150,000 g/mol; syndiotactic polystyrene that has a density of 1.10g/cm3 and a weight-average molecular weight of 125,000 g/mol
Calculate the concentration of argon in lake water at 20C. if the partial pressure of argon is 0.0090 atm and Henry's constant is 0.0015
As food manufacturers add vinegar to food preparations to make them tart, rather than pure acetic acid,
If it took 8.54 mL of .150 M lead (ii) nitrate what is the mass of chloride in the ointment? What is the mass of Chloromycetin? What is the percent chloromycetin in the solution?
Helium is collected over water at 25°C and 1.00 atm total pressure. What total volume of gas must be collected to obtain 0.563 g of helium? (At 25°C the vapor pressure of water is 23.8 torr.)
when 2.00 x 10 3 g of CaCo3 are heated the actual yield of Cao is 1.05 x 10 3 g. what is the percent yield?
When using paper chromatography to separate components of a mixture, the manual suggests that water is wicked through the paper.
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