You want to prepare a solution with a concentration of 200.0 μm from a stock solution with a concentration of 500.0 mm . at your disposal you have 5-ml and 10-ml transfer pipets and volumetric flasks of sizes 100, 250, 500, and 1000 ml. which of the following serial dilutions will give you the 200.0 μm solution. produce a 200 μm solutiondilute 5 ml of the stock solution upto 500 ml. then dilute 10 ml of them upto 250 mldilute 5 ml of the stock solution upto 100 ml. then dilute 10 ml of them upto 1000 mldilute 10 ml of the stock solution upto 100 ml. then dilute 5 ml of them upto 1000 mldoes not produce a 200 μm solutiondilute 5 ml of the stock solution upto 250 ml. then dilute 10 ml of them upto 500 mldilute 10 ml of the stock solution upto 250 ml. then dilute 10 ml of them upto 1000 ml
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Chemistry, 23.06.2019 06:40, hackman1216
The combustion of methane, ch4, releases 890.4kj/mol. that is, when one mole of methane is burned,890.4 kj are given off to the surroundings. this meansthat the products have 890.4 kj less than the reactants. thus, ah for the reaction = - 890.4 kj. a negative symbolforah indicates an exothermic reaction. ch (g) + 20 (g)> co2 (g) + 2 h0 (1); ah = - 890.4 kga) how much energy is given off when 2.00 mol of ch, are burned? b) how much energy is released when 22.4g of ch. areburned?
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Chemistry, 23.06.2019 13:30, swagjlove32
Asap a 50.0 ml soap bubble is blown in a 27.0°c room. it drifts out an open window and lands in a snow bank at -3.0°c. what is its new volume?
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You want to prepare a solution with a concentration of 200.0 μm from a stock solution with a concent...
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