Three different compounds are represented by particle diagrams. Determine the molar mass of each and the number of moles that are present if 51.7 grams of each is available.

Three different compounds are represented by particle diagrams. Determine the molar mass of each and determine the mass if 3.31 moles of each compound is available.

Use your Periodic Table to answer the following questions.

During one of the Unit 2 labs, Mr. Glynch’s lab procedure reads “Add 7.94 x 10²² molecules of Cu(NO₃)₂ to the beaker.” Well ahead the rest of the class, Jenna and Jada quickly figure out that they must calculate the mass from the number of molecules. They quietly do the calculation, make the measurement, and add the Cu(NO₃)₂ molecules to the beaker before giving their signature “STEM Rocks” cheer. What mass did Jenna and Jada add to the beaker?

Having not followed Mother’s orders regarding tooth brushing, Matt is in chair at Dr. Luvtadril’s dental office. Prior to the work being done at the excavation site, the dentist provides Matt 3.05 x 10²¹ molecules of N₂O anesthesia for pain relief.

Sulfur hexafluoride, SF₆, has the opposite effect that helium has upon the pitch of a person’s voice. Inhaling SF₆ into the lungs and then speaking lowers the pitch of one’s voice incredibly low. During Last Tuesday’s chemistry lab, Carly was protecting the lab table (and not her eyes) with her goggles. Mrs. Stymone grabbed her SF₆ pen from her locked table drawer, inhaled 4.49 x10²⁰ molecules of SF₆, and approached Carly’s lab table. In the voice of the head football coach, she sternly commanded Carly to “Put your googles on now.” What mass of SF₆ did Mrs. Stymone inhale prior to this intimidating gesture?