Concept explainers
The active ingredient in Turns is calcium carbonate. One Turns tablet contains 500. mg of calcium carbonate. (6.3, 6.4, 7.2, 7.3)
The active Ingredient In Turns neutralizes excess stomach add.
a. What is the formula of calcium carbonate?
b. What is the molar mass of calcium carbonate?
c. How many moles of calcium carbonate are in one roll of Turns that contains 12 tablets?
d. If a person takes two Turns tablets, how many grams of calcium are obtained?
e. If the daily recommended quantity of Ca2+ to maintain bone strength in older women is 1500 mg, how many Turns tablets are needed each day to supply the needed calcium?
Want to see the full answer?
Check out a sample textbook solutionChapter 9 Solutions
Modified Mastering Chemistry with Pearson eText -- Standalone Access Card -- for Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
- How much heat (in kilojoules) is evolved or absorbed in the reaction of 1.65 gg of NaNa with H2OH2O?2Na(s)+2H2O(l)→2NaOH(aq)+H2(g) ΔH∘2Na(�)+2H2O(�)→2NaOH(��)+H2(�) Δ�∘ = -368.4kJkJ.arrow_forwardWhat is Ka, Kb, relationship between these and Kw.arrow_forwardCalcium citrate; MM=498.46 g/mol, a common preservative, has a Ksp of 1.12 x 10^-15 at 25°C.arrow_forward
- During the combustion of 5.00 gg of octane, C8H18C8H18, 239.5 kcalkcal (1002 kJkJ) is released. what is the balanced equation for the combustion reaction? How much energy (in kJkJ) is released by the combustion of 1.21 molmol of C8H18C8H18 ? How many moles of octane must be burned to release 442.4 kcalkcal ? How many kilocalories are released by the combustion of 18.3 gg of C8H18C8H18 ?arrow_forwardNatural gas, or methane, is an important fuel. Combustion of one mole of methane releases 802.3 kilojoules of energy. How much energy does that represent in kilocalories? Group of answer choices 1.92 × 10–1 kcal 1.92 × 102 kcal 3.36 × 103 kcal 1.92 × 105 kcal 3.36 × 106 kcalarrow_forwardWhat type of reaction and how much energy is involved in a reaction of boron trichloride with hydrochloric acid? B2H6(g) +6Cl2(g) ⟷2BCl3(g) + 6HCl(g) ΔH= -755.4 kJ/mole Group of answer choices Exothermic with ΔH = -755.4 kJ/mole. Exothermic with ΔH = +755.4 kJ/mole. Endothermic with ΔH = -755.4 kJ/mole. Endothermic with ΔH = +0.001324 kJ/mole. Endothermic with ΔH = +755.4 kJ/mole.arrow_forward
- How many moles of MgCl2 are produced from 35.0g of Mg and 35.0g of HCl? Mg + 2HCl → MgCl2 + H2 Group of answer choices: 0.956 moles 1.44 moles 0.479 moles 1.92 molesarrow_forwardA student reacted 3.01g salicylic acid with 5.98mL acetic anhydride and isolated 2.85g Asprin. A) Calculate moles of salicylic acid used. B) Calculate the mass of acetic anhydride used. C) Calculate moles of acetic anhydride used. D) using moles of limiting reactant present, calculate the theoretical yield of aspirin. E) Calculate the percent yield of aspirin synthesis.arrow_forwardwhen a 0.55-g of olive oil is burned in a calorimeter the hear released increases the temperature of 360 g of water from 22.7 c to 36.4 c . what is the energy value for the olive oil in kcal/g?arrow_forward
- Ammonia will react with fluorine in the gaseous state to produce dinitrogen tetrafluoride and hydrogen fluoride according to the equation: α NH3(g) + β F2(g) → γ N2F4(g) + δ HF(g) The best values for α, β, γ and δ are: A. 2, 1, 1, 6 B. 2, 3, 1, 6 C. 2, 5, 1, 6 D. 2, 10, 1, 6 E. 2, 6, 1, 6arrow_forwardWhich has more calories: table sugar or aspartame?arrow_forward2) The approximate number of Calories C, that an animal needs each day is given by ? = 72?3⁄4 , where m is the animal’s mass in kilograms. Find the number of Calories that a 16 kilograms dog need a day.arrow_forward
- Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning