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The melting point of a solid is 90°C. What is the heat required to change 2.5 kg of this solid at 30°C to a liquid?The
1. 2 answers
2. 817 views
If the mass of oxygen is 16 times as large as the mass of hydrogen, what is the distance between the centre of the oxygen atom
1. 1 answer
2. 675 views
A 60 kg skier is coming down a hill that has an incline of 35°.If the force of friction between the ski and the snow is 6 N,
1. 1 answer
2. 560 views
An automobile gasoline tank holds 45 kg of gasoline. When the gasoline burns, 158 kg of oxygen are consumed and carbon dioxide
1. 3 answers
2. 2,147 views
why is it important to add 1M HCl dropwise to the crucible?
1. 1 answer
2. 973 views
HII'd like someone to check explain me the following questions related to the text and how to find them out The following text :
1. 0 answers
2. 461 views
HelloI'm too confused in this A proper set is said to be the elements that are not all included in a set A subset however is
1. 1 answer
2. 542 views