How many oxygen molecules are needed to make 10 carbon dioxide molecules according to the following balanced chemical equation?
2 CO + O2 ? 2 CO2
A) 5
B) 1
C) 4
D) 10
E) 2
Answer: A
You might also like to view...
Analysis of stellar spectra shows that most stars consist of 71% ________, 27% ________, and a 2% mix of the other elements.
A. hydrogen; helium B. hydrogen; oxygen C. helium; hydrogen D. oxygen; nitrogen
What are the shortest wavelength X-rays produced by a 50,000-V X-ray tube?
What will be an ideal response?
Current understanding holds that a galaxy's type (spiral, elliptical, or irregular) ________
A) may either be a result of the mass of the protogalactic cloud that formed it or the result of the heavy element abundance in that cloud B) is always determined by the angular momentum of the protogalactic cloud that formed it C) is determined by whether the galaxy is located in a cluster where collisions are likely or outside a cluster where collisions are less likely D) may either be the result of conditions in the protogalactic cloud that formed it or the result of later interactions with other galaxies
For an electron in the M shell, find (a) the largest possible orbital angular momentum it can have, and (b) the smallest possible orbital angular momentum it can have
Express your answers in SI units, and for each case indicate the subshell (s, p, d, ...) of the electron.