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Consider the following experimental data set obtained for the density of a metal object as measured by three students in the laboratory: 6.02g/mL, 6.04g/mL, and 6.05g/mL. The actual density of the object is known to be 5.00g/mL.
1) Calculate the absolute and relative standard deviation for the above data set.
2) Determine the significance of the numerical value for the relative standard deviation calculated in the first question.
write down the chemical equations when benzene reacts with water and balanced it also explain what happens when this
Calculate the cell potential for the following reaction as written at 61 °C, given that [Mg2 ] = 0.854 M and [Ni2 ] = 0.0100 M. If Mg(s)+Ni^2+ Mg^2+ + Ni(s). E^o for Mg half-cell is -2.38 and for Ni -0.26
What is the molarity of an aqueous solution containing 75.3 g of glucose (C6H12O6, mol wt = 180 g/mole) in 35.5 mL of solution
A reaction vessel contains 13.9g of CO and 13.9g of O2. How many grams of CO2 could be produced according to the following reaction. 2CO + O2 ---> 2CO2
a 350 ml gas piston is filled with .250 moles of gas at standard temperature and pressure. the pistonpushed into the
Look at the list of fabrics that are woven into the multifiber fabric. Which do you suspect will absorb the dyes in a similar way. Explain why.
At what temperature will air (MW=29) have the same density as helium at 300 K, both gases at the same pressure.
Natural gas is a mixture of many substances, primarily CH4,C2H6,C3H8 and C4H10. Assuming that the total pressure of the gases is 1.34 atm and that their mole ratio is 94 : 4.0 : 1.5 : 0.50, calculate the partial pressure (in atmospheres) of each g..
what mass of ethylene glycol must be added to 1455 g of water to raise the boiling point to 104.7 degree celsius
What is the ratio between HCO3- and HCO3H to produce a buffer with a pH of 6.5? Ka of HCO3H is 7.94 x 10-7.
The solubility of nitrogen gas "N2" in water at 20oC and 520 mmHg is 5.0×10-4 mol/L. The Henry's law constant (in mol/L.atm) at 20oC for the solubility of nitrogen gas in water is: A) 7.3×10-4 B) 7.1×10-4 C) 6.9×10-4 D) 6.7×10-4 Show steps please.
Brass is a substitutional alloy consisting of a solution of copper and zinc. A particular sample of red brass consisting of 80.0%Cu and 20.0% Zn by mass has a density of 8780 k/m3. a)What is the molality of in the solid solution
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