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Problem- If a 85.0 degrees celsius iron rod weighs 1.20kg was placed in 15.2L of water at 20.0 degrees celsius, what is the temperature of the mixture. (specific heat of iron= 0.450J/gK and density of water at 20.0 degrees celsius= 0.998234g/mL)
Describe your respond.
a sample of chlorine which has an average atomic mass of 35.86 consists of two isotopes with mass of 35 and 37. what is
Assuming that acetic acid (HC2H3O2) has one acidic H and is the only acid in vinegar; calculate the concentration of HC2H3O2 in this sample. (Ka=1.8e-5)
Acetic acid(HC2H3O3) is an important ingredient of vinegar. A sample of 50.0mL of a commercial vinegar is titrated against a 1.00M NaOH solution. What is the concentration(inM) of acetic acid present in the vinegar
A soft drink contains 35 mg. of sodium in 315g. of H2O. What is the concentration of sodium in the soft drink in mass percent?
Draw the molecule by placing atoms on the grid and connecting them with bonds. Show the formal charges of all atoms in the correct structure. Include all lone pairs of electrons.
Suppose you wanted to heat a mug of 250. mL water from room temperature, 25°C, to 100°C to make a cup of tea. How much energy (in joules and in calories) would you need from your microwave.
Copper has a density of 8.900 g/cm^3. How many centimeters cubes would be displaced If 35 kg of copper pellets were poured into a barrel of water
Pretend 32.15 mL of NaOH of the standardized base is required to titrate a 20.00 mL sample of a 1.000 to 10.000 dilution of the mystery acid. What is the concentration of the acid (before dilution)
THF followed by basic peroxide and then acid. Give thpse three products; use arrows demonstrating electron movement to show details of the reactions, including the peroxide cleavage of the B-C bond.
Suppose you did the bromination of cholesterol using bromine in DMSO(dimethyl sulfoxide)/H2O mixture (instead of acetic acid). What product(s) would you get?
the heat of combustion of butane is -2878kj/mol assume a typical cigarette litter hold about 1.75 grams of butane how much energy would be released
150.g of NaCl completely dissolves (producing Na+ and Cl- ions) in 1.00k of water at 25.0C. The vapor pressure of pure water at this temperature is 23.9torr.
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