Match with correct  a. Single displacement  b. Synthesis  c. Combustion  d. Decomposition  e. Double displacement

QUESTION 3 Chemical reactionc most comonly do work on their surroundings by a. having gases as reagents only O b. producing a lot of heat C. Forming neutral solutions from acids and bases d. forming gas phase products

Answer questions 2 & 3

Match with correct  a. Single displacement  b. Synthesis  c. Combustion  d. Decomposition  e. Double displacement

Why are the changes of state (e.g., boiling) not a chemical reaction A. Changes of state create new substances B. Changes of state do not create new substance  C. Changes of state are always reversible D. Changes in state cannot always be detected E. Changes of state do not involve chemicals

5) If all the NaHCO3 in bag 2 reacted, calculate the number of moles of gas produced? tates) E Focus

100% Normal text Arial 11 B 1 - 1 2 3. 4 I5 6 7 8 T9 1 10 11 I 12 13 2. Copper (1) carbonate heptahydrate has the chemical formula a) CUCO3.5H20 b) CU2CO3.5H2O c) CuCoz. 7H20 d) Cu2CO3. 7H20 B. A double displacement reaction may be defined as: a) two or more simple substances producing a more complex substance *b) a more complex substance breaking down into simpler ones c) one element replacing another element in a compound d) a reaction involving two ionic compounds where the cations and anions replace each other Neutralisation occurs when: a) an acid is mixed with water b) a base is mixed with water c) a salt is mixed with an acid d) an acid is mixed with a base 山TOA Ai étv Book Pro

7. 5.00 mL of stock solution is diluted to 25.00 mL, producing solution ALPHA. 10.00 mL of solution ALPHA is diluted to 25.00 mL, resulting in solution BETA. 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. a. Determine the dilution factor in producing solution ALPHA from the stock solution. b. Determine the dilution factor in producing solution BETA from the solution ALPHA. C. Determine the dilution factor in producing solution GAMMA from the stock solution BETA. d. Determine the overall serial dilution factor in producing solution GAMMA from the stock solution.

need help with 9 and 10

12. For each reaction below, the starting mass/volume of each reagent is provided as well as the final mass of product isolated. Calculate the theoretical and percent yield for each reaction. a. b. OH OH + l MW 122 1.50 g CI MW 141 d 1.21 g/mL 0.250 mL MW 60.1 7.40 g 1. PhMgBr MW 181 905 mg 2. HCI H3PO4 OH Ph MW 164 1.86 g Ph MW 260 547 mg + H₂O