Let A=(12302400-5)(1-73012001)(1008-30042).  Find det A.  

chromium(III) hydrogen sulfate

In an experiment 0.500 g of nickel were found to react with 0.204 g of oxygen.  What is the  empirical formula for this compound? 

Which of the following is NOT identified correctly?

In an experiment 0.500 g of nickel were found to react with 0.204 g of oxygen.  What is the  empirical formula for this compound? 

CBr4

What is the ion symbol and charge for the cesium ion when it forms?

If you have 5.0 moles of laughing gas (N2O) at STP, how many liters would this be?  Report to proper number of significant figures.

CONGRATULATIONS… You finished the Exam and our Course!!   Before submitting your Exam, please make sure you:  Rip up your scrap paper, Periodic Table & Ion Chart in front of the WebCam.  Submit your Exam.   It has been a pleasure having you in class and I wish you the best as you continue your studies!  Enjoy the holidays–stay safe and healthy!! Hope to have you in class again!!

What is the name for an atom that has lost or gained electrons and acquired a charge?