Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product structures, draw the curved electron-pushing arrows for the following reaction or mechanistic steps. Be sure to account for all bond-breaking and bond-making steps. 1 1 H سلام H H Select to Add Arrows 1 HCI, CH3CH2OH 1

What is the molecular formula of the CHN-containing compound, M^+=80?

11. Gallium has two naturally occurring isotopes. 69 Ga (amu 68.9257) is the more abundant isotope, at 60.4% and 71 Ga (amu 70.939) has abundance 39.6%. Calculate the atomic weight of gallium, Ga. Show work and significant figures

6. Use the following data to calculate the molar mass of naturally occurring silicon: Isotope             Isotopic Molar Mass                  Abundance 28Si                   27.97693 g/mol             92.23% 29Si                   28.97649 g/mol             4.67% 30Si                   29.97376 g/mol             3.10%

28. a) 60u Calculate the molecular mass of HNO3 b) 63u c) 65u

2. What is the mass percent of iron in Fe(NO3)3 • 9H2O?

5 & 6 &7 plz

what is the proper chemical name

Which one of the following has the smallest mass percent of F in the compound? A) SF₆ B) NaF C) XeF₂ D) KrF₄

2. CHEMISTRY SUBJECT. You can expect a APPROVE RATING from me Ma'am. I promise