The law of conservation of mass states; Nothing can be created or destroyed. Atoms are just rearranged. According to this, How many grams of CO2 would be produced in the reaction
below?
27 g +
54 g
g +
38g
+
22g
C, H,O2 + NaHCO,
CO2 + NaC, H,O2
+ H2O

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.

Balance the following reaction. as2s3 + 9o2 → 2as2o3 + so2

If a particle has z = 25 and 23 electrons, what is its charge?