Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
Why is there such a great difference in their penetrating power if the alpha particles can barely penetrate a piece of paper; beta particles can penetrate a few millimeters of aluminum; gamma ray s
Determine the number of mL of 0.250 M lithium hydroxide needed to neutralize the 70.0 mL of 0.155 M arsenic acid. Be sure to write down the balanced equation describing this reaction.
Determine the Kb value for each of these species. Consider the species PO4 3-, HPO42-, H2PO4-. Each ion can act as a base in the water. Which species is the strongest base?
How can you tell if a structure of a complex is tetrahedral or square planar, specifically, does It depend on the kinds of legands?
Describe the difference in the potential energy of a mercury atom among the top and bottom of a column of mercury in a barometer when the pressure is 1.0 atm?
The pressure remains constant, what is the volume of the balloon indoor at a temperature of 25C. A balloon is inflated outdoor on a cold day in North Dakota at a temp.-400C to a volume of 2.00L.
How can determine the ideal moisture content of skin? How can calculate a skin moisturizer?
Bronze is an alloy of copper (MM 63.55) and tin (MM 118.7). If a 105.0 gram block of a bronze alloy has a heat capacity of 28.4J/K, determine the mole fraction of copper in the alloy. The Dulong-Pe
How can determine the hydronium ion concentrate and the hydroxide ion concentrate in the blood, the pH of which is 7.3 (slightly alkaline)
Determine the three fractions of a perfume and how do these fractions differ at the molecular level?Determine what type of detergent is used in baby shampoos? Why?
Determine the role of carbohydrates in the diet?Calculate the role of proteins in the diet?
After the addition of 10.0mL of 0.200M hydrochloric acid (HCl), 0.213g silver chloride was recovered. An impure sample of silver nitrate (Ag (NO3)3) weighing 0.340g was dissolved in the water.
Determine the numbers of molecules of methylene blue dye are in a 256-fold dilution of a 0.00025% methylene blue dye stock solution? The molecular weight of methylene blue is 373.9 g/mol.
Determine the three fractions of a perfume? How do these fractions differ at the molecular level? Calculate the two major categories of food additives?
The density of sodium chloride is 2.165 x 103 kg/m3. Compute the spacing between adjacent sodium and chloride ions in the crystal.
Explain what United States government agency regulates the use of food additives and what must be done before a food company can use a new food additive.
Discuss how much energy is supplied by 1g of carbohydrates?Explain what is a trans fat and how are trans fats made?
How can find the pH of the aqueous solution when a solution prepared by dissolving the 0.125 grams of sodium hydroxide (NaOH) in 600 mL of distilled water.
A pharmacy student dissolved the 0.56 grams of potassium hydroxide(KOH) in the distilled water to make 100ml of solution and she label edit solution K.
Phenobarbital, a weak acid and a commonly used the hypnotic-sedative drug has a pka value equal to 6.22 and a molecular weight of 232 grams/mole. 0.4884 gm of Phenobarbital was dissolved in 100
Determine the juvenile hormones and explain how they are used against the insect pests? Determine the numbers of electrons does an atom generally need in its outer level to be most stable?
A sample which is having 25.00 mL of H2C2O4 solution needed 43.88 mL of 0.1891 M NaOH to titrate it to the equivalence point. Determine the molarity of the H2C2O4 solution?
Water in equilibrium with the air contains 4.4 x 10-5% CO2. Water in contact with air is acidic, rather than neutral, due to dissolve the carbon dioxide.
Determine the Kb value for each of these species. Which species is the strongest base? Consider the speciesPO43-, HPO42-, H2PO4-. Each ion can act as a base in water.