CO2 (g)+ CO2(g)+ C2H5OH(l) how many molecules of carbon dioxide are produced when 1.00 g of sucrose ferments?.

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?

Calculate the expected ph values of the buffer systems from the experiments (a,b,c,d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.