15 pointsss!! Plz help on this question 29
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Chemistry, 22.06.2019 02:00
The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?
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Chemistry, 22.06.2019 08:30
7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 β 4 sentences in your explanation. 8. when a 2.5 mol of sugar (c12h22o11) are added to a certain amount of water the boiling point is raised by 1 celsius degree. if 2.5 mol of aluminum nitrate is added to the same amount of water, by how much will the boiling point be changed? show all calculations leading to your answer or use 3 β 4 sentences to explain your answer. 9. if 5.40 kcal of heat is added to 1.00 kg of water at 100β°c, how much steam at 100β°c is produced? show all calculations leading to an answer. 10. the freezing of water at 0β°c can be represented as follows: h2o (l) β h2o(s) the density of liquid water is 1.00 g/cm3. the density of ice is 0.92 g/cm3. in 3 β 4 sentences explain why applying pressure causes ice to melt.
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Chemistry, 22.06.2019 17:20
Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?
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Chemistry, 23.06.2019 03:30
Select the correct lewis structure for fluorine which is group 7a element?
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Mathematics, 03.12.2019 13:31
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