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Blocks of concrete 10m long are placed end to end with no space in between them to allow for expansion. If the blocks were placed at a temperature of 20oC, what will be the force of compression when the temperature reaches 40oC? The contact area between the block is 0.20m2. Will fracture occure?
How much energy (in kilojoules) is required to convert 245 mL of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 g/mL ?
What would the atom ratio of 206Pb to238U be in a uranium mineral from a rock that is 1.0 × 10^9 years old? t1/2(238U)= 4.5 × 10^9 yr
What is the half reaction occurring at the anode of the voltaic cell in the balanced reaction shown below? 3MnO4- + 24H+ + 5Fe ----> 3Mn^2+ + 5Fe^3+ + 12H2O
Adrenaline is the hormone that triggers the release of extra glucose molecules in times of stress or emergency. A solution of 0.79 g of adrenaline in 33.5 g
how many grams of sulfuric acid are produced?
Calculate the pH of a solution prepared by mixing 0.0800 mol of chloroacetic acid plus 0.0400 mol of sodium chloroacetate in 1.04 L of water. (pKa of chloroacetic acid = 2.865.)
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.
determine what is the longest possible wavelength of light that could ionize an atom of bismuth if the first ionization
Using the van der Waals equation, calculate the pressure exerted by 15.0 mol of carbon dioxide confined to a 3.00-L vessel at 56.0 oC. Note: Values for a and b in the van der Waals equation: a = 3.59 L2.atm/mol2, and b = 0.0427 L/mol.
Calculate the theoretical yield of C2H5Cl when 106 g of C2H6 reacts with 236 g of Cl2 assuming that C2H6 and Cl2 react only to form C2H5Cl and HCl
Calculate the heat capacity of a calorimeter if the combustion of 4.660 g of benzoic acid led to an increase in temperature of 7.148 degree celsius.
Calculate the moles of silver nitrate and sodium chloride. (c) Which reactant is the limiting reagent? (d) Determine the theoretical yield in grams of silver chloride formed.
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