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Hafsat

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A light bar is pivoted at its centre and weight of 5n and 10n.placed 3cm and 2cm respectively from the pirot on the side and
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Find, correct to nearest naira,the compound interest on N85750 for 3 years at 5%?
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determine the mass of carbon4oxide produced from burning 104g of ethyne
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2. 2,243 views

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Response today
2C2H2 + 5O2 ==> 2H2O + 4CO2 RMM of C2H2=26g therefore 1mol of C2H2 = 26g Since 2mol of C2H2 required 5mol of oxygen 2mole of C2H2 = 2 ×26=56g & 5mol of O2= 5×32=160g Hence 52g of C2H2 ==>160g of O2 7g of C2H2 ==>Xg of O2 Cross multiply X=160×78÷52
111g = 1×6.03

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