Chemistry, 24.02.2020 17:40 Kekkdkskdkdk
When some food is taken from a refrigerator at t=0 minutes, its temperature is 0∘C. After t=3 minutes in a 20∘C room its temperature has increased to 11∘C. What is the temperature of the food at t=8 minutes?
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In apex! a liquid heated beyond a certain temperature becomes
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For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)
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When some food is taken from a refrigerator at t=0 minutes, its temperature is 0∘C. After t=3 minute...
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