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1) does a 10kg solid iron brick have twice as much mass as a 5 kg solid brick?
twice as much weight?
twice as much volume?
2) does a 10kg solid iron brick have twice as much mass as a 5kg solid block of wood?
3) what is the volume of a 12.0g sample of water?
4) a piece of gold has a mass of 5.2g and it displaces 4.16 ml of water. calculate its density.
5) which molecule are moving fast on average a swimming pool of water or a cup of water?
Our book shows a radioactive decay series in which a sample that starts out as U-238 eventually winds up becoming non-radioactive Pb-206. The half life for this process is extremely long, being 4.51 x 10^9 years. Consider a radioactive mineral sam..
The molar heat of fusion of tungsten is 33.7kJ/mol. What mass of tungsten can be melted by the addition of exactly 150cal at its melting point
Consider the reaction when aqueous solutions of barium acetate and chromium(III) iodide are combined. The net ionic equation for this reaction is
1) What would be produced if water was used instead of methanol for the transesterification (fats/oils with strong alkali solution) 2) How does burning biodiesel produce no net CO2 in the atmosphere
Draw all possible mesomeric structures of the carbocationic intermediate in the chlorination of benzoic acid. Explain why m-chlorobenzoic acid is the main product
The equilibrium constant is 100. Calculate the concentrations of O2 present at equilibrium
at 700 k the equilibrium constant for the reaction is kp 0.76.ccl4g cs 2 cl2ga flask is charged with 2.00 atm of ccl4
A solution contains a mixture of Cl- and Br- ions. Can both be positively identified? Briefly explain. Write appropriate equations to support your answer.
Nickel and aluminum electrodes are used to build a galvanic cell. The standard reduction potential for the nickel(II) ion is -0.26V and that of the aluminum(III) ion is -1.66V.
The solubility of lead (II) sulfate is 4.0x10^-2 g/L. What is the solubility product constant for lead (II) sulfate?
What wieght of glycine (pka1=2.4, pka2=9.6) and what volume of 0.5 N(normality) HCl would be necessary to make 100 mL of 0.2 M buffer pH 2.4?
At high temperature, ammonia reduces copper(II) oxide to the free metal: Step 1: 2NH3(g) + 6CuO(s) => N2(g) + 3Cu2O(s) + 3H2O(g) Step 2: 2NH3(g) + 3Cu2O(s) => N2(g) + 6Cu(s) + 3H2O(g)
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