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An unknown metal is determined to be arranged in an fcc structure. Explain the density of the metal is 11.3g/cm3 as well as the edge cell length is 495 pm find out the molar mass of the metal. Define what the metal is
Determine the pH of a 0.227 M C5H5N solution at 25°C. The Kb of C5H5N is 1.7 x 10-9.
when a salt like magnesiumnitrate is dissolved in water it dissociates. if six moles of magnesium nitrate are dissolvd
a 70g piece of ice at 0c is added to a sample of water at 8c, all of the ice melts and the temp of the water decreases to 0c, how many grams of water were in the sample?
An aqueous solution that contains 285ppm of potassium nitrate (KNO3) is being used to feed plants in a garden. What volume of this solution is needed.
Talc (used in talcum powder) has mass composition 19.2% Mg, 29.6% Si, 42.2% O,and 9.0% H.What is the empirical formula of the compound?
A radio station's channel, such as 100.7 FM or 92.3 FM, is actually its frequency in megahertz MHz, where 1MHz=10^6 Hz. Calculate the broadcast wavelength of the radio station 96.50 FM.
How many kJ of energy are required to convert 747 grams of water (liquid) at 23.4°C to steam at 100°C? The following information is given for H2O:
a gaseous mixture consists of 80.0 mole percent n2 and 20.0 mole percent 02. suppose water is saturated with the gas
A 30.00mL sample of 0.1234M hypobromous acid (HBrO) is titrated with a 0.2555M potassium hydroxide solution. (Ka for hypobromous acid = 2.5x10^-9) How many milliliters of potassium hydroxide solution would be required to reach the midpoint of the ..
A standard mixture containing 2.00 ppm and 2.50 ppm gave a Fe / Mn signal ratio (quotient) of 1.05. A 5.00 mL unknown Fe solution was mixed with 1.00 mL solution containing 12.5 ppm Mn
Choose all of the processes from below which describe changes which are independent of the path by which the change occurs. the elevation increase experienced by a traveller travelling from Grand Isle, LA to Denver, Colorado
Determine which girl has the solutions at the concentrations desired and Girl A dilutes 10 mL stock solution to a final volume of 20 mL. Girl B dilutes 10 mL stock solution to a final volume of 40 mL.
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