Chemistry, 18.03.2021 03:20 emilypzamora11
PLEASE ANSWER AWARDING 50 POINTS FOR WHO EVER IS RIGHT:
Kerry made some copper sulphate crystals. She wrote a description of what
she did.
I heated some dilute sulphuric acid in a beaker and added some copper
oxide to it.
I stirred the mixture until it became a clear blue colour. I added more
copper oxide until no more would react and then filtered the mixture into
a dish.
A black solid was left on the filter paper. I left the solution in the dish for a
week and saw that the liquid had evaporated and blue crystals were left.
question: Why did Kerry Filter the mixture?
Answers: 2
Chemistry, 22.06.2019 00:40
Base your answer on the information below and on your knowledge of chemistry. nitrogen dioxide, no2, is a dark brown gas that is used to make nitric acid and to bleach flour. nitrogen dioxide has a boiling point of 294 k at 101.3 kpa. in a rigid cylinder with a movable piston, nitrogen dioxide can be in equilibrium with colorless dinitrogen tetroxide, n2o4. this equilibrium is represented by the equation below. 2no2(g) n2o4(g) + 58kj at standard pressure, compare the strength of intermolecular forces in no2(g) to the strength of intermolecular forces in n2(g).
Answers: 2
Chemistry, 22.06.2019 05:50
What are transitions between a liquid and a solid called? identify which way they are transitioning
Answers: 2
Chemistry, 23.06.2019 01:30
Magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. trial 1: trial 2: data mass of empty crucible with lid trial 1: 26.688 trial 2: 26.681 mass of mg metal, crucible, and lid trial 1: 26.994 trial: 2 26.985 mass of mgo, crucible, and lid trial 1: 27.188 trial 2: 27.180
Answers: 1
PLEASE ANSWER AWARDING 50 POINTS FOR WHO EVER IS RIGHT:
Kerry made some copper sulphate crystals. S...
Mathematics, 03.12.2019 05:31
Biology, 03.12.2019 05:31
Mathematics, 03.12.2019 05:31
English, 03.12.2019 05:31
Social Studies, 03.12.2019 05:31
Mathematics, 03.12.2019 05:31
Physics, 03.12.2019 05:31
English, 03.12.2019 05:31
Mathematics, 03.12.2019 05:31