Chemistry

Chemistry, 27.06.2019 16:20, thiago22

What is the mass of 3.2 moles of h2o ?

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Chemistry, 25.07.2019 13:00, dzepeda061

98 ! will award extra pls answer the following: make the following calculations of properties of gases a. how many moles of so2 are in 745 l at stp? b. what is the volume of 325 moles of n2? c. what is the density of a gas with a molar mass of 78 g/mole? question 18 determine the following formula masses: a. nh4cl b. nahco3 c. c17h18f3no question 19 how many moles are each of the following? a. 270 g kbr b. 397 g li2so4 question 20 calculate the percent by mass of water in the following compounds a. cocl2.6h2o b. pbcl2. 3h2o question 21 how many particles are there in a. 0.2 moles feso4 b. 1.7 moles ch4 question 22 what is the mass of a. 1.7 moles cabr2 b. 0.48 moles n2o question 23 determine the percent composition for the following a. a compound contains 6.2 g c, 4.1 g h, and 15.9 g o b. a compound contains 1.2 moles c and 3.2 moles h

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Chemistry, 30.07.2019 00:00, rome58

To convert from mass a to moles of b in stoichiometry problems, the following steps are followed: mass a --> mass b --> moles b mass a --> moles b mass a > moles a --> moles b mass a --> moles a --> mass b--> moles b

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Chemistry, 28.09.2019 02:10, Sylnatius6736

4. al2o3 (s) + 6hcl (aq) → 2alcl3 (aq) + 3h20(1) find the mass of alcl3 that is produced when 10.0 grams of al2o3 react with 10.0 g of hci moar mass alqo3 102 gm imol al2o3 = 0.098 moles molar mass of hcl = 36, 5gr/mol #of moles #6l =0,274 moles mole of al2 oz 6 mol of hc 01274 x2 = 0.0913 moles alc3=13,5 6 i mass alco3 = 12, 193gm. 5. how many grams of the excess reagent in question 4 are left over?

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Chemistry, 09.10.2019 17:00, mprjug6

In the synthesis reaction, the white powder produced is magnesium oxide (mgo, mm = 40.3 g/mol). how many moles of magnesium oxide were formed (number of moles = mass (g) / molar mass (g/ choose the closest answer. a.0.21 moles b.0.41 moles c.0.11 moles d.0.31 moles submit for grading save and finish later

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