How does the glass of a greenhouse model the carbon dioxide and other gases in earthís atmosphere?
1. the glass absorbs light and releases energy in the form of heat.
2. the glass allows light in and traps much of the radiated heat.
3. plants in a greenhouse absorb energy from the sunlight and can grow through the winter.
4. the glass blocks incoming light and reduces the amount of heat absorbed by the plants inside. ( 4 or one is my answer but im unsure of it)

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

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

How many grams of sodium chloride are in 250ml of a 2.5m naci solution