Which of these is the correct definition of genetic modification/genetic engineering? A. Altering the DNA of an organism at the molecular level

B. Choosing individuals to mate based on desired characteristics

C. Observing genetic changes in populations over time based on adaptive traits

D. Extracting stem cells to differentiate into specialized tissues

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Phosgene (carbonyl chloride), cocl2, is an extremely toxic gas that is used in manufacturing certain dyes and plastics. phosgene can be produced by reacting carbon monoxide and chlorine gas at high temperatures: co(g) cl2(g)⇌cocl2(g) carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 477 ∘c . at equilibrium, the concentrations were measured and the following results obtained: gas partial pressure (atm) co 0.830 cl2 1.30 cocl2 0.220 what is the equilibrium constant, kp, of this reaction