Chemistry Earth’s atmosphere is an envelope of gases extending to a height of 200 km 100 km 150 km 300 km 200 km 100 km 150 km 300 km ANSWER DOWNLOAD EXAMIANS APP
Chemistry If there is one million Mg2+ ions in MgCl2, how many chloride ions are there? Ten million One million Half a million Two million Ten million One million Half a million Two million ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemical formula of washing soda is Na2SO4.10H2O Na2CO3.10H2O Ca(OH)2 NaHCO3 Na2SO4.10H2O Na2CO3.10H2O Ca(OH)2 NaHCO3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the mass percentage of carbon in carbon dioxide (CO2) 0.273 0.323 0.201 0.158 0.273 0.323 0.201 0.158 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chief constituent of vinegar is Salycylic acid Formic acid Acetic acid Oxalic acid Salycylic acid Formic acid Acetic acid Oxalic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry A subshell with l=2 can take up 8 electron 10 electron 5 electron 3 electron 8 electron 10 electron 5 electron 3 electron ANSWER DOWNLOAD EXAMIANS APP
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