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_Total mass of reactants = total mads of products
therefore , law of conservation of mass is followed

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- Mass can neither be created nor destroyed in a chemical reactions.

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Differentiate between an open and a closed system

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Differentiate between an open and a closed system

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An open system can exchange both energy and matter with its surroundings.

A closed system, on the other hand, can exchange only energy with its surroundings, not matter.

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In 2017, the UAE launched ‘Energy Strategy 2050’, which is considered the first unified energy strategy in the country that is based on supply and demand. The strategy aims to increase the contribution of clean energy in the total energy mix from 25 per cent to 50 per cent by 2050 and reduce carbon footprint of power generation by 70 percent and also seeks to increase consumption efficiency of individuals and corporates by 40 per cent.

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Sodium carbonate + ethanoic acid =carbon dioxide + water + sodium ethanoate
5.3 + 6 = 2.2 + 0.9 + 8.2
11.3 = 11.3
Hence, Total mass of reactants = Total mass of products
By- Nandana and Eshita