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A manometer connected to a pipe in which a fluid is flowing indicates a negative guage pressure head of 50mm of mercury. what is the absolute pressure in the pipe in newton's per square meter if the atmospheric pressure is 1 bar?
How many moles of O2 are needed to consume 0.52 mol of Mg in the following unbalanced reaction? Mg plus O2 -> MgO
What are the resonance structures for [H2CNO2]-? The problem asks for the major and minor contributors. The answer key says that there are two structures in which the only double bond switches between the two NO bonds
There are 0.30 mol SrCl2 in every liter of solution. Calculate the number of moles of SrCl2 that were added. What is the limiting reactant?
A BOD test is to be run on a sample of wastewater that has a five-day BOD of 230 mg/L. If the initial DO of a mix of distilled water and wastewater is 8.0 mg/L
A) What is the pH of a solution made by adding 6.21 grams of NaF to 391 mL of 0.317 M HF? (Assume no change in volume takes place.) B) What is the pH of the solution in part A after adding 49.0 mL of 0.100 M HBr?
suppose that a cars starter draws 225A of current for 6.3 s to start the car. what mass of Pb is oxidized in the lead-acid battery to supply the electricity?(in grams)
Write a balanced equation for the reaction that occurs in each of the following cases: (a) Cesium is added to water. (b) Strontium is added to water.
heparin was treated with dimethyl sulfate. the product was hydrolyzed under acidic conditions. draw the structure of
Calculate the values of Avogadro's number and the Faraday assuming the charge in an electron is 1.602 x 10^-19 coulombs/electron. Also calculate the mass the magnesium anode have lost during the process. The answers will be a number.
the boiling point of a solution containing 10.44 g of an unknown nonelectrolyte in 50.00 g of acetic acid is 159.2degc.
Calculate the formula mass of each compound given below. Keep at least one decimal place in atomic masses from the periodic table.
the 23rd-century starship enterprise uses a substance called di-lithium crystals as its fuel. the mass of one 6li atom
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