Question 2 (6.5 points)
Solar Eclipse: Choose ALL that apply
Earth casts a shadow on the moo...
Chemistry, 18.03.2022 01:30 sayedaly2096
Question 2 (6.5 points)
Solar Eclipse: Choose ALL that apply
Earth casts a shadow on the moon
Moon moves between the sun and Earth
The Earth is directly between the moon and sun
The moon blocks out the light of the sun and casts a shadow onto the Earth
Answers: 2
Chemistry, 22.06.2019 09:30
Why do cells appear different in distilled water than they do in 10% salt water?
Answers: 2
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How many moles of sulfuric acid (h2so4) are needed to react completely with 6.8 moles of lithium hydroxide (lioh)? 2lioh + h2so4 → li2so4 + 2h2o a. 3.4 mol h2so4b. 6.8 mol h2so4 c. 10.2 mol h2so4 d. 13.6 mol h2so4
Answers: 3
Chemistry, 22.06.2019 21:40
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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