Question

Strontium carbonate decomposes into strontium oxide and carbon dioxide gas when heated, as shown below. What mass of strontium carbonate would be required to produce 1.349 g of strontium oxide, assuming the reaction went at 100% yield? 2. SrCOs(s)->SrO(s)+ CO2 (g) What volume of oxygen, in mlL, would be produced at STP (0 °C and 1.00 atm) by the decomposition of 3.428 g of sodium chlorate, according to the equation below? 3. 2 NACIO,(s)->2 NaCl (s) + 3 O2(g) If a 2.465 g sample of potassium hydrogen carbonate lost 0.798 g of mass during a decomposition reaction, what was the % yield of the reaction? 4. 2 KHCO,(s)->K,CO, (s) + H,O (g) + CO2(g)

Answer 1

Banced equation SyCos CD Iwole Syco eYoduce 4mole SYo 88+ la3(16) 1489 /mo) SYCO3 molas mass= S0 molay 'mass = 88+16 lo t/mol 148 5Co Pyoduce lo4g of SYo SYco 148 STCO lo4 ofSO \ ৭२৪ of 142 SYCo is xeguiyed to pYoduce 1 १ ५৭ ४ ৩ s४০ ।

euaton Gven balanced 2Mac t 20 (9) Nacl o, Naclo roduce 3 mole a mole mole Naclo lo6.5mol 2349/wo Na c Molay mass 58.59/moj a (1o6 59) waclog 48Nac 3 . 3 (3a4) o x 3 ৮৯৪৭ 4-Ce a(lo6 59Naclos 2 at STP Occupies aa u L mole at STP occupfes aa 4 xio^ A mole aa x m