Chemistry, 18.08.2019 10:20 1940swannabe
Kia is doing an experiment in science lab. she is given a beaker containing 100 g of liquid. the beaker has markings on the side for measuring volume. the water comes up to the 100 ml mark. kia puts the liquid on a hot plate by mistake. by the time she realizes the mistake, half of her liquid has evaporated.
kia still needs 100 g of liquid for her experiment. to find out how much liquid she has to replace, she needs to re-weigh her liquid. however, the balance she used before is now broken. the teacher tells kia that she can tell how much water is left by looking. the water now comes up to the 50 ml mark.
how much mass does kia's remaining water have?
Answers: 2
Chemistry, 22.06.2019 11:00, hannah5143
The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.
Answers: 2
Chemistry, 22.06.2019 20:00, kalcius9698
What is the molarity of the solution produced when 145 g of nacl is dissolved in sufficient water to prepare 2.75 l of solution?
Answers: 1
Chemistry, 22.06.2019 21:40, k3rbycalilung
Tooth enamel consists mainly of the mineral calcium hydroxyapatite, ca_10(po_4)_6(oh)_2. trace elements in teeth of archaeological specimens provide anthropologist with clues about diet and diseases of ancient people. students at hamline university measured strontium in enamel from extracted wisdom teeth by atomic absorption spectroscopy. solutions with a constant total volume of 10.0 ml contained 0.726 mg of dissolved tooth enamel plus variable concentrations of added sr. added sr find the concentration of sr in the 10 ml sample solution in parts per billion = ng/ml. find the concentration of sr in tooth enamel in parts per million = mu g/g.
Answers: 2
Kia is doing an experiment in science lab. she is given a beaker containing 100 g of liquid. the bea...
Mathematics, 11.11.2020 23:00
English, 11.11.2020 23:00
Mathematics, 11.11.2020 23:00
Mathematics, 11.11.2020 23:00
Spanish, 11.11.2020 23:00
Geography, 11.11.2020 23:00
Biology, 11.11.2020 23:00
Mathematics, 11.11.2020 23:00