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A sample of aluminum with a mass of 53.2 g is initially at 155ºC. What's the temperature of the aluminum after absorbing 2.87x103 J of heat? (Note: The specific heat capacity of aluminum is SH = 0.903 J/gºC)
a sample is a mixture of agno3 cucl2 and fecl3. when a 1.0000-g sample of the mixture is dissolved in water and reacted
25.00 mL of a tap water sample is titrated with5.00x10-3 M EDTA solution. 6.25 mL are required to reachthe endpoint. What is the hardness of the water in ppm
Compute the volume (in mL) of a 0.620 M KOH solution that should be added to 5.750 g of HEPES MW=238.306 g/mol pKa = 7.56 to give a pH of 7.26.
What simple chemical tests could be performed to distinguish among Butanoic Acid, Methyl Benzoate, and Maleic Acid?
In the following reaction, how many grams of NaBr will produce 244 grams of NaNO3? Pb(NO3)2(aq) + 2 NaBr(aq) PbBr2(s) + 2 NaNO3(aq)
Concentrated sulfuric acid has a density of 1.84 g/cm3 and is 95% by weight H2SO4. What are the molarity and the molality of the solution
Which of the following describes what happens to the solubility of a slightly soluble ionic compound when a common ion is added to the solution
Explain what is the concentration of acetic acid as well as acetate in a 0.045M acetate buffer, pH 5.2? The Ka for acetic acid is 1.7e-5 pka=4.76. Presume acetic acid + acetate = 0.045M.
Alkenes contain double bonds while alkynes contain triple bonds, Naming compounds containing double as well as triple bonds
chlorine triflouride gas at 708 mmHg and 50 degrees celcius. what is the mass (in g) of the sample?
a sample of gas is collected over water at a temperature of 35.0c when the barometer pressure reading is 742. torr.
What kinds of life-forms would most likely survive in highly polluted world? What would be their general ecological characteristics?
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