How much heat (in joules) does it take to melt 21 grams of ice at 0°celsius?

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?

Ok, so i have 2 questions. try to answer them both: (the topic is fire) 1) how can you represent the chemical reaction of fire? 2) what kind of bond is formed in this chemical reaction