Observe: Set Temperature to 24°C, Light intensity to 50%, and CO2 level to 200 ppm. Move the Temperature slider up and down. Were you able to increase oxygen production? (Return the slider to 24°C when finished.) Move the Light intensity slider back and forth. Were you able to increase oxygen production? (Return the slider to 50% when finished.) Move the CO2 level slider back and forth. Were you able to increase oxygen production? (Return the slider to 200 ppm when finished.)

3 1/4 %

explanation:

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally