name two organic and two inorganic acids.
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December 2022
what are the following called? (a) the phenomenon in which a substance combine with oxygen giving out heat and light.
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December 2022
how are carbon dioxide and nitrogen used for life processes
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December 2022
if a diver inhales air deep under the sea, a gas dissolves in his blood,and this gas bubbles out when he comes up. name the gas.
what is acid rain? it's harmful effects
name the gas used for filling food packages.
What happen when nitrogen dioxide react with water?
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December 2022
is the pH of lemon juice or beleaguered higher or lower than 7
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December 2022
you have a red litmus paper but you need a blue one form some purpose how old you convert the red litmus paper into blue one?
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December 2022
state any three favorable condition for digging an Artesian well.
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December 2022
what are the following called? the reaction in which a substance adds on oxygen.
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December 2022
what is the substance called which show different colour in acidic and basic solution?