1-What is the volume in liters of 1.14x10^21 molecules NO2 at STP? 2-What is the mass of 5.07 mole N2?
3-Convert 35.5g NH3 to particles
4-Convert 18.82 L NO gas (STP) to grams:
5-How many molecules of CH4 are in a 24.7g sample?
6-How many atoms of iodine are in 12.75g of CaI2?
7-How many kilograms of lead (IV) nitrate are present in 2.275x1026 formula units?
8-Convert 27.2g Li2S to liters
9-What is the mass in grams of 75.5L of CO2 gas (at STP)?

The biomedical technique in which a part of the brain is destroyed with electric current is known as a. electroconvulsive therapy b. prefrontal lobotomy c. bilateral cingulotomy d. tardive dyskinesia

For questions 1 and 2, consider the following experimental data.hydrogen emission lines were detected at the following wavelengths (in nm): 121.6102.697.395.093.8question 1use the electromagnetic radiation classifications below and figure 1-1 in the introductory information for this lab (in the lab manual) to determine the nf value for the experimental data provided? wavelength, ? (nm) 650 700 550 600 400 450 500 visible spectrum wavelength, ? (m) 11 10 3 10 10 10 8 10 5 10 10 -10 10 9 10 10 10 10 -12 10 microwave radio infrared x-ray ultraviolet gamma 1020 1019 1018 1 1016 015 1014 01 12 109108 frequency, v (hz)a.1b. 2c. 3d. 4e. 5question 2using the data for the emission line with the longest wavelength, the known value of nf (from question 1 in this prelab), and the value of ni (deduced from the ? and nf values) calculate the rydberg constant for hydrogen (rh) in units of m-1.a) 1.097 x 10-11 m-1b) 5.921 x 107 m-1c) 1.097 x 10-2 m-1d) 9.252 x 106 m-1e) 1.097 x 107 m-1

In in , is to a 28.4-g (1-oz)−23.0 °c to −1.0 °c?