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Which quantity has the greatest mass? 2.0 mol of Na, 2. 0 mol of Na2O, 2.0 mol of NaCl, 2.0 mol of O2
Why are active on-duty firefighters likely to experience the adverse health effects from inhaling 300 ppm of carbon monoxide faster than nonactive off-duty firefighters who inhale the same concentration of the same substance?
Water is placed into a calorimeter. when 1 gram of an ionic solid is added, the temperature of the solution increases from 21.5 C to 24.2 C as the solid dissolves.
What mass of Aluminum is produced when 0.5 mole of Al2S3 is completely reduced with excess H2?
Suppose that a liquid is 11 times denser than water If you were to sip this liquid at sea level using a straw what would be the maximum length of the straw
Classify each of the following reactions as combination, decomposition, single replacement, or double replacement: a) CuO(s)+2HCl(aq)-->CuCl2(aq)+H2O(l); b) 2Al(s)+3Br2(g)-->2AlBr3(s); c)Pb(NO3)2(aq)+2NaCl(aq)-->PbCl2(s)+2NaNO3(aq); d)2Mg(s)+O2(g..
when a 45 g sample of an alloy at 100 c is dropped into 100 g of water a 25c the final temperture is 37 c. what is the
Which of the following will precipitate as chloride salts: Ag+, Pb2+, Ca2+, K+, and Cu2+?
A 350.0 g sample of copper is initially at 25.0 °C. It absorbs 12.50 kJ of heat from its surroundings. What is its final temperature, to the nearest tenth of a degree?
highlight by clicking on the asymmetric carbons if any, and indicate whether each compound is Chiral and Number of stereocenters
to determine the partial pressure and the total pressure using daltons law of partial pressures.a mixture of gases
For the reaction 2HCl + Na2CO3 to 2NaCl + H2O + CO2 what volume of 0.45 M HCl solution would be needed to produce 2.5 L of CO2 at STP?
at a particular temperature and a0 2.00 x 10-2 concentration versus time data were collected for this reaction and a
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