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A piece of metal with a mass of 151 g is placed in a 50 mL graduated cylinder. The water level rises from 20. mL to 35 mL. What is the density of the metal?
atomic absorption spectrometer was used with the method of standard additions to determine the concentration of cadmium in a sample of an industrial waste stream. For the addition, 10 uL of a 1000 ug/mL Cd standard was added to 10 mL of solution.
Identify the substance produced in the liver that helps catalyze this reaction.
The dried precipitate weighs 10.3g. Calculate the amunt of MgCl2 in the original sample (in weight percent).
Write balanced chemical equations and Ksp expressions for each of the salts as part of your solution.
Draw the structure of the product that is formed when the compound shown below is treated with the following reagents:
sample of unknown HCL solution reacts completely with Na2CO3 to form 15.1g CO2, What was the concentration of the HCL solution?
water's heat of fusion is 80 cal/g and is specific heat is 1.0 cal/g degree celcius. Some velmobile set have been designed to hold ice packs inside their cushions.
a assessor is measuring the perimeter of a rectangular lot. he measures two adjacent sides to be 50.11 plusmn 0.05 m
Out of what will you construct your calorimeters? please answers have to be related to chemistry and specifically to this experiment.
A scientists places 4.00 moles of Argon, Ar (g) and 2.00 moles of Helium, He (g) into a flask at the temperature of 298 Kelvin and measures the pressure to be 3.00 atm. calculate the pressure due to Helium gas?
The second virial coefficient B and the third virial coefficient C for A are -0.021 L/mol and 0.0012 L^2/mol^2 at 273 K respectively. By what percentage does the compressibility change
what mass of carbon dioxide will be produced if 144g of carbon react with 384g of oxygen gas according to the equation C + O2 --> CO2
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