How much `KClO_3` should be heated for the production of oxygen to burn out 6g of carbon completely?

How much KClO_(3) is needed to produce enough oxygen for burning 10g of coke? (C=12, Cl=35.5, O=16)

How much KClO_(3) must be heated to produce as much oxygen as that would be obtained from 200g of HgO? [Hg=200.5, K=39]

How much potassium nitrate should be heated to get enough oxygen required to completely burn 5 litres of hydrogen at STP? (K=39, N=14, O=16) [Ans. 22.53g]

Photochemical dissociation of oxygen results in the production of two oxygen atoms,one in the ground state and one in the excited state. O_2oversethnurarrO+O^* . The maximum wavelength needed for this is 174nm. if the excitation energy OrarrO^* is 3.15xx10^-19J, How much energy in kJ/mole is needed for the dissociation of one mole of oxygen into normal atoms in ground state?

12.25 gm KClO_3 is heated to produe oxygen. How much quantity of Zn is required to produce hydrogen to react with the produced oxygen? (Zn = 65, K = 39, O = 16, Cl = 35.5, H = 1)

How much potassium chlorate is needed to get enough oxygen for complete burning of 84g litre of carbon monoxide at STP?

How much heat is absorbed in complete reaction of 3.00 g of SiO_2 with excess of carbon in the reaction given below? SiO_2(g)+3C(s)rarrSiC(s)+2CO(g), DeltaH=624.7 kJ

Write down the thermochemical equations for the following reactions: (i) A 1 mol sample of methane gas reacts with 2 mol of oxygen gas to form 1 mol of carbon dioxide and 2 mol of water. In this reaction, 890.5 kJ of heat is produced. (ii) A 1 mol sample of carbon (graphite) reacts with 1 mol of oxygen tof orm 1 mol fo carbon dioxide gas. the heat evolved in this reaction is 393.5 kJ. (iii) 6 mol of carbon dioxide gas reacts with 6 mol of water to form 6 mol of oxygen gas and 1 mol of glucose. the heat absorbed in this reaction is 2200 kJ.

How much heat is required for 40g water to boil and turn into vapour?

A balloon with mass m is decending down with an acceleration a (where a lt g ) . How much mass should be removed from it so that it strts moving up with an acceleration a?