Please answer each question. On December 28, 2019, Jamie and Heather booked a trip to Italy with Primo Tours. The cost of the trip is $5,000.00 per person and the trip has been paid in full. They were supposed to fly to Italy on March 16, 2020.  However, due to the coronavirus, all flights into Italy were cancelled and the country was on lockdown.  Can Jamie and Heather terminate the contract and get a refund of their deposit?  Explain your answer.

Stadium Construction Project Problem: If F takes four days instead of two, what is the critical path of the project? ACTIVITY IMMEDIATE PREDECESSOR DURATION (days) A – 1 B A 4 C A 3 D A 7 E B 6 F C,D 2 G E,F 7 H D 9 I G,H 4

PROJECT CRASHING PROBLEM (all time in Days, all Cost in $): What is the EXACT SEQUENCE of activities to crash, to reduce the project by 4 days, at least cost? Activity Immediate Predecessor Normal Time Crash Time Normal Cost Crash Cost A – 5 4 1000 1400 B – 3 3 800 – C A,B 3 1 600 900 D B 4 2 1600 2000 E C,D 5 3 800 1200 F E 2 1 1300 1400

What volume of 6.0 M HNO3 would be needed to make 500 mL of 0.50 M solution?

A pressure is recorded as 622 torr. What is this pressure in atm?

A solution is made by combining 4.00 g of sugar and 100 mL of water (density = 1.00 g/mL). What is the concentration in % w/w?

Which of the following is the correct Lewis structure for C2H4?

Isotopes differ from each other in what way?

Colloids can be stabilized by emulsifying agents.

If urine has a density of 1.08 g/mL, what would be the mass of a 125 mL urine sample?