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Water at 29.0 °C is sprayed onto 0.188 kg of molten gold at 1063 °C (its melting point).
The water boils away, forming steam at 100.0 °C and leaving solid gold at 1063 °C.
What is the minimum mass of water that must be used?
Gas chromatography gave peak areas of 363 and 260 for iodoacetone and p-dichlorobenzene, respectively. Find the concentration of iodoacetone in the 3.00 mL of original unknown.
Calculate the nuclear binding energy of one lithium-7 atom. the measured atomic mass of lithium-7 is 6.015amu.
The resolution for two compounds in a chromatogram was measured to be R = 0.928. The retention times for each compounds compound are
Describe the nature and characteristics of PCB's. Why are they of importance to an EH&S or FS professional who encounters them when coming upon an incident scene where they are present? What precautions, or actions, should the EH&S or FS professio..
When 15 mL of a solution containing 1.2 M Na2S is diluted to 30mL, a dilute solution is formed. How many moles of Na+ ions are contained in 20 mL of the dilute solution
The electron configuration of the outermost electrons of the alkaline earth metals can be represented by a. ns1 b. ns2
1. if the concentration of the orginal solution of 1.0 mcuno32 was actually less than 1.0 m howwould this affect the
A mass of 46 g of solid sodium reacts with 38 g of flourine gas to produce 84 g of sodium flouride, Na F.
Problem- Find the ratio of no of Na atoms in 3p excited state to the no. in ground state at 2500 K. the average wavelength of two sodium emission lines is 5892 A.
A student measures the volume of water delivered by a 1 mL volumetric pipette several times and records measurements of 1.00, 0.97, 1.03, 1.01 and 1.03 mL. What is the average of the five measurements. Report your answer to 5 significant figures a..
What is the molar mass of cholesterol if 0.00105 mol has a mass of 0.106g
Determine the activation barrier for the reaction.
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