Which of the following is an example of physical change?
a. mixing baking soda and vinegar tog...
Chemistry, 17.09.2019 19:00, andrewmena05
Which of the following is an example of physical change?
a. mixing baking soda and vinegar together, and this causes bubbles and
foam.
b. a glass cup falls from the counter and shatters on the ground.
c. lighting a piece of paper on fire and the paper burns up and leaves ashes.
d. baking a birthday cake for your mother.
Answers: 1
Chemistry, 22.06.2019 08:00, tchase0616
What is the molarity of 60.0 grams of naoh dissolved in 750 milliliters of water? a) 1.1 m b) 2.0 m c) 12 m d) 75 m
Answers: 1
Chemistry, 22.06.2019 14:30, clemsongirl5392
Select all that apply. using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 (s) pb+2(aq) + 2cl -(aq). the concentration of the products yield a ksp of 2.1 x 10-2:
Answers: 2
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
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