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chemistry test _2
Question | Answer |
---|---|
The formula mass of aluminum oxalate,Al2(C2O4)3, is | 318 amu |
In 0.332 mol of trimellitic acid, C6H3(COOH)3, there are | 1.80x10^24 carbon atoms |
which of the following compounds has the highest % of nitrogen by mass | NH4NO2 KNO3 N2F4 HNO3 (NH4)2SO4 |
Analysis of a compound showed that it contained 14.4% hydrogen atoms and 85.6% carbon atoms by mass. what is the empirical formula | CH CH2 CH3 C2H3 C2H5 |
a particular compound contains, by mass, 41.4% carbon,3.47% hydrogen, and 55.1% oxygen. A 0.050-mol sample of this compound weighs 5.80g. The molecular formula of this compound is | CHO C3H3O C2H2O2 C4H4O4 C5H5O5 |
An organic compound that has the empirical formula CHO has a molecular mass of 174amu. Its molecular formula is | C5H5O5 C2H5 C6H6O6 C12H12 |
A 5.95g sample of AgNO3 is reacted with BaCl2 according to the equation 2AGNO3(aq)+ BaCl2 (aq)--> 2AgCl(s)+Ba(NO3)2(aq) | 32.0% 100% 42.6% 63.9% 53.9% |
2KHCO3(s)--> K2CO3(s)+ CO2(g)+H2O(l) How many moles of potassium carbonate will be produced if 476g of potassium hydrogen carbonate are heated | 4.76 3.44 238 2.38 12.6 |
C3H8+5O2--> 3CO2+4H2O how many grams of oxygen are required to burn 4.2g of C3H8 | 3.1g 72g 36g 15g 52g |
Aqueous solutions of sodium sulfide and copper(II) chloride are mixed together. Which statement is correct | both NaCl and CuS will precipitate from the solution No precipitate will form cus will precipitate from the solution NaCl will precipitate from the solution No reaction will occur |
Which of the following is a strong acid in aqueous solution | HCLO2 HCLO- HI H2S HC2H3O2 |
the oxidation # of carbon in the formate ion,HCOO-, is | -2 -1 0 +1 +2 |
identify the spectator ion in the following reaction Cu(OH)2(s)+2H^+(aq)+Cl-(aq)-->Cu^2+(aq)+2Cl-(aq)+2H2O(l) | Cu2+ and Cl- H+ and Cl- Cu(OH)2 Cl- Cu2 |
the net ionic equation for the equation of calcium bromide and sodium phosphate contains which of the following species | Ca2+ PO4^3- 2Ca3 6NaBr 3Ca2+ |
what products results from the addition of aqueous solutions of Sr(NO3)2(aq) and (NH4)2 S(aq) | SrS(s)and NH4NO3(aq) |
which of the following is not an Arrhenius base | LiOH NH3 Ca(OH)2 Sr(OH)2 KOH |