Chemistry, 18.02.2022 16:10 30valgolden
Explain the following: The texture of a pencil is smooth. A:chemical change B:chemical equation C:physical property D: physical change
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Chemistry, 21.06.2019 15:30
Which of the following mining methods disrupts the sea floor?
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Chemistry, 21.06.2019 15:50
Which of these reactions are redox reactions? check all that apply.cd + hcl → cdcl2 + h2cucl2 + na2s → 2nacl + cuscaco3 → cao + co2 2zns + 3o2 → 2zno + 2so2 ch4 + 2o2 → co2 + 2h2o
Answers: 3
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 – 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 – 4 sentences to explain your answer. 9. if 5.40 kcal of heat is added to 1.00 kg of water at 100⁰c, how much steam at 100⁰c is produced? show all calculations leading to an answer. 10. the freezing of water at 0⁰c can be represented as follows: h2o (l) ↔ h2o(s) the density of liquid water is 1.00 g/cm3. the density of ice is 0.92 g/cm3. in 3 – 4 sentences explain why applying pressure causes ice to melt.
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Chemistry, 22.06.2019 10:00
In a water molecule, hydrogen and oxygen are held together by a(an) bond. a) double covalent b) ionic c) nonpolar covalent d) hydrogen e) polar covalent
Answers: 1
Explain the following: The texture of a pencil is smooth. A:chemical change B:chemical equation C:ph...
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