hello can someone please solve these 3 and create another example of each for me

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hello can someone please solve these 3 and create another example of each for me I would really appreciate it I have an exam in two days

ven belovw In the last section, there are 5 calculations, similar to those gi 15. Limestone (CaCos) is decomposed by heating to quicklime (CaO) and carbon dioxide. Calculate how many grams of quicklime can be produced from 1.0 kg of limestone Relative atomic masses: Ca = 40 C = 12 O=16. 16. Calculate the pH of a HNOs solution of concentration 0.02 mol dm3. 17. Ammonia is bought as "880 ammonia" (a solution of density 0.880 g cm*), whose content is 28% ammonia (ie, it contains 280 g ammonia per kilogram of solution).

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hello can someone please solve these 3 and create another example of each for me

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