Chemistry, 15.02.2021 19:00 shubbs1038a
This is a steel penny from 1943. A steel penny will weigh 2.72 g and is
magnetic. This penny weighs 2.74 grams and sticks to a magnet. Therefore,
this is likely a steel penny. Identify the RULE in this claim, evidence and
reasoning
Answers: 3
Chemistry, 23.06.2019 03:30, alecnewman2002
The molar mass of iron(fe) is 55.8 g/mol. what is the mass in grams of 2.25 moles of iron?
Answers: 1
Chemistry, 23.06.2019 07:30, jonquil201
Using this reversible reaction, answer the questions below: n2o4 2no2 (colorless) (reddish-brown) -as the temperature increased, what happened to the n2o4 concentration? -was the formation of reactants or products favored by the addition of heat? -which reaction is exothermic? right to left or left to right? -if the change of enthalpy of this reaction when proceeding left to right is 14 kcal, which chemical equation is correct? n2o4 2no2 + 14 kcal n2o4 2no2, hr = +14 kcal n2o4 + 14 kcal 2no2 n2o4 2no2, hr = -14 kcal
Answers: 1
This is a steel penny from 1943. A steel penny will weigh 2.72 g and is
magnetic. This penny weighs...
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