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Write down a balanced equation for the reaction of the calcium hydroxide, Ca(OH)2, with phosphoric acid, H3PO4, producing the water, H2O and the calcium phosphate, Ca3(PO4)2.
Determine the number of moles in the 17.7 grams of the compound. Determine the empirical formula for this compound?
What is the formula of metal chloride if a metal chloride containing 65.74% of Chlorine? Specific heat of metal is 0.115 where 400cc of the vapor of metal chloride at NTP has the weight of 5.8gm.
Demonstrate a correct numerical setup for calculating the number of moles of Mg(OH)2(gram -formula mass = 58.3 grams/mole) in an 8.40 gram sample.
Calculate the formulas for the insoluble precipitates produced when the sodium hydroxide reacts with Copper (II) ion, Iron (III) ion, and Lead (II) ion?
Suppose you prepare a buffer solution by dissolving the 2.00 g each of benzoic acid, HC7H5O2 , and the sodium benzoate, NaC7H5O2, in 750.0 ml of water.
Determine the numbers of grams of (NH4)2SO4 must be dissolved in the 0.500 L of 0.35 MNH3 to form the solution with pH = 9? Suppose that the solution volume remains at 0.5 L
Two stereo isomers are obtained from the reaction of HBr with (S)-4-bromo-1-pentane. One of the stereo isomers is optically active and the other is not.
How will the titration differ from the one you performed in the laboratory if HCl is placed in the buret and NaOH is mixed with the phenolphthalein in the Erlenmeyer flask?
Explain what does the Roman numeral stand for in an ion such as Lead (II)? Discuss why does an element such as lead need a Roman numeral behind it?
Explain what kind of a person was Mother Teresa? What were some of her great accomplishments and what did her accomplishments do for the people in the world.
Calculate the difference between the nuclear fission and nuclear fusion processes. Use nuclear equations to illustrate the difference.
Explain why it would be reasonable to have silicon based life-forms as opposed to the carbon based life produces on the Earth and also think about the chemical properties of each.
Does this product have the R or the S configuration? (Illustrate the product using a Fischer projection showing the proper configuration) When (S)-(+)-1-chloro-2-methylbutane reacts wit
Explain why a pressure cooker has a tight lid that presses down on the steam from boiling water, allowing food to cook faster than it does at atmospheric pressure?
Determine the numbers of grams of potassium are in the 3.10 kg of apples? Nutritional tables give the potassium content of a standard apple (about 3 apples /lb) as 159 mg.
Why is that? Discuss the difference and write down the equation showing the ions that are produced. Hydrocarbons do not dissolve in the concentrated sulfuric acid, but methyl benzoate does.
Discuss what would you expect the structure of dinitro ester to be? Consider the directing effects of ester and the first nitro group on the addition of the second nitro group.
Why is it not possible to achieve net synthesis of oxaloacetate by adding acetyl Co A to a mixture containing the enzymes and cofactors of the citric acid cycle?
Discuss the biological magnification of the DDT and its impact on animal life.Explain the Law of Conservation of Mass applies to dieting, too.
Reading a package of "Cheezy-Poofs", we note that the manufacturer claims it to be a cholesterol-free food. The ingredients list partially hydrogenated vegetable oil as the fat source. Is this a cho
Determine what should the chemical equation for gun powder look like if it is made with the following chemicals:KNO3 + C + S or, if it is made using chlorate instead
Explain why the potassium chlorate (KClO3) is more reactive than the potassium nitrate (KNO3) when used in a mixture of Carbon and Sulfur to make gunpowder.
Explain what would you expect the structure of dinitro ester to be and consider the directing effects of the ester and the first nitro group on the addition of the second nitro group.
A 0.5133g sample was dissolved and diluted to 1000mL in the determination of calcium in antacid tablets by atomic absorption.