part a;
the equation for molarity, m, is
m=n/v
where v is volume and n is the number of moles of solute.
a certain solution has a molarity of m = 2.73 mol/l and has a volume of v = 0.650 l . what is the value of n?
express your answer numerically in moles.
part b;
the equation for photon energy, e, is
e=hcλ
where h = 6.626×10−34 j⋅s (planck's constant) and c = 2.99×108 m/s (the speed of light).
what is the wavelength, λ, of a photon that has an energy of e = 3.98×10−19 j ?
express your answer numerically in meters.
part c;
the ideal gas equation is
pv=nrt
where p is pressure, v is volume, n is the number of moles, r is a constant, and t is temperature.
you are told that a sample of gas has a pressure of p = 899 torr , a volume of v = 3280 ml, and a temperature of t = 307 k . if you use r = 8.206×10−2 l⋅atm/(k⋅mol) , which of the following conversions would be necessary before you could find the number of moles of gas, n, in this sample?
check all that apply.
view available hint(s)
check all that apply.
convert the pressure to atmospheres (atm).
convert the pressure to pascals (pa).
convert the volume to cubic meters (m3).
convert the volume to liters (l).
convert the temperature to degrees celsius (∘c).
convert the temperature to degrees fahrenheit (∘f).