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1.

One mole of potassium chlorate (KClO_(3)) is thernally decomposed and excess of aluminum is aluminium oxide (Al_(2)O_(3)) are formed?A. 1B. 1.5C. 2D. 3

Answer» Correct Answer - A
Discussion
2.

A 1.871 gram sample of an unkown metallic carbonate is decomposed by heating to form the metalling oxide and 0.656g of carbon dioxide according to the equation `MCO_(3)(s) rArr MO(s) + CO_(2)(g)` What is the metal?A. CaB. MnC. NiD. Zn

Answer» Correct Answer - D
Discussion
3.

100 L of carbon dioxide measured at 740 mm Hg and `50^(@)C` is produced the complete combination of a sample of pentane. `2C_5H_12+16O_2to10CO_2+12H_2O` What mass of pentane reacted ?A. 342gB. 265gC. 64.4gD. 53.0g

Answer» Correct Answer - D
Discussion
4.

A 0.239g sample of a gas in a 100-ml flask exerts a pressure of 600mm Hg at `14^(@)C`. What is the gas?A. ChlorineB. NitrogenC. KryptonD. Xenon

Answer» Correct Answer - A
Discussion