You calculate that 213,000 m/s is the answer to a problem. what can you conclude about your answer?
a.
it has six significant figures.
b.
it has three significant figures.
c.
it’s not possible to know how many significant figures are in an answer without knowing its accepted value.
d.
it is not possible to know how many significant figures are in an answer without knowing its percent error.

At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

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.

Nonpoint source pollution is difficult to control because it