Styles Short Answers What two compounds are mixed together to form calcium carbo
ID: 1030953 • Letter: S
Question
Styles Short Answers What two compounds are mixed together to form calcium carbonate, Caco:(s)? State their name and formula. (0.5 pts) Na2CO3(ag) and CACI2(aa) sodium carbonate and Calcium chlonde What is the concentration of the above two compounds? (0.5 pts 1. 2 3. What are hydrated molecules? (0.5 pts) 4. How many water molecules are attached to a compound that is a hexahydrate? (0.5 pts) 5 What does anhydrous mean? (0.5 pts 6. The liquid that is collected in the beaker while fitering is called what? (0.5 pts) 7. The solid that is collected in the filter paper cone is called what? (0.5 pts) 8. What acid will easily dissolve CaCO(s) (0.5 pts) 9. Write a balanced MOLECULAR equation for the reaction between sodium carbonate and calcium chloride. (1 ptExplanation / Answer
1) Balanced equation
2 C3H8O3 + 7 O2 ---> 6 CO2 + 8 H2O
Answer is B) 2
2) Mass of carbon = 23.1 g
180 g (1 mole) of carbon will have avagadro number ( 6.023 * 1023 ) of atoms
No. of moles = 23.1 g / 180 g = 0.1283 moles
No of atoms = 6.023 * 1023 * 0.1283 * 6 moles = 4.64 * 1023 atoms
Answer is B)