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If you dilute 19.0 mL of the stock solution to a final volume of 0.290 L, what will be the concentration of the diluted solution?
What is the pH of 1.00 L of rainwater that has dissolved 5.47 mg of NO2? Assume that all of the NO2 has reacted with water to give nitric acid. list an example of a strong acid and write its balanced chemical reaction when placed in water.
A 486 mL sample of water was cooled from 50.0°C to 10.0°C. Assuming a specific heat of 4.184 J/K g and a density of 1.00 g/mL, find the amount of heat transferred from the water to the surroundings.
Both pieces are placed inside a calorimeter whose heat capacity is negligible. What is the final temperature inside the calorimeter
John Dalton, the father of the atomic theory of matter, said that "all atoms of a given chemical element are identical". What is wrong with that statement
What is the concentration of Br- (aq) in a solution prepared by mixing 75.0ml of 0.62M iron (III) bromide with 75.0ml of water? Assume volumes are additive.
Choose the answer which presents the chemical formulas for two substances in order of decreasing melting point (highest melting point first) and gives a valid reason for this order.
The pH of a 0.25 M aqueous solution of hydrofluoric acid, HF, at 25.0 °C is 2.03. What is the value of Ka for HF
Yeast and other organisms can convert glucose (c6h12o6) to ethanol (ch3ch2oh) by a process called alchoholic fermentation. The net reaction is
Balance the following redox equation in acidic solution: As + ClO3- => H3AsO3 + HClO. The sum of the coefficients of all reactants and products in the correctly balanced equation is equal to what number
Titrated with 0.10 M HBr. Determine the pH of the solution after the addition of 400.0 mL HBr.
What is the internal energy change for the gas. Give your answer in joules (J), accurate to three significant figures
How many grams of oxygen would be required in the combustion of propane to produce 582 kJ of heat?
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