Answer to Question #74668 in General Chemistry for Tinkerbell

Question

I need help with 5 chemistry questions and would need work to be shown. A. Measure out 0.130 moles of salt (NaCl) into a blue, dry cup. You need to convert to mass in grams. Show work:
B. Put 4.03x10^23 molecules of water into a clear cup. You need to convert to mass in grams. Show work:
C. Obtain a small sample of metal from your teacher. Determine how many atoms it contains. Show work: the metal sample weighs 142g
1. Your metal element is trading at $0.000656/g on the stock market. What is the value of your sample of metal?
2. Restate the mathematical relationship between number of moles and masses, or number of molecules and mass, as a complete sentence below: