The energy of a photon is equal to the product of planck's constant,h and speed of light,c over the wavelength,y. Hence, e=h*
. h is equal to 6.6261*10^-34 Js, c is equal to 3*10^8 m/s and y= 12.7 cm or 0.127 m. Substituting, energy is equal to 1.5652*10^-24 Joules.
Answer:
4.27 moles of NaCl
Explanation:
Molar mass of NaCl = 23 + 35.5 = 58.5 g/mol
Number of moles of NaCl(table salt) = 250 grams /58.5 g/mol
= 4.27 moles of NaCl
Answer:
N2 = 588.95 mm Hg
O2 = 158.36 mm Hg
Ar = 6.787 mm Hg
Explanation:
Their percentage represents their mole fraction.
N2= 78.1% = 0.781
O2 = 21.0% = 0.21
Ar = 0.9% = 0.009
Barometric pressure is 754.1 mm Hg
Partial pressure for each will be,
For N2 = 0.781 x 754.1 = 588.95 mm Hg
For O2 = 0.21 x 754.1 = 158.36 mm Hg
For Ar = 0.009 x 754.1 = 6.787 mm Hg
Answer:
Swedish physicist Johannes Rydberg
Explanation:
1. 5
5 electrons
Hydrogen shares its only electron with Carbon to get a full valence shell. Now Carbon has 5 electrons. Because each Carbon atom has 5 electrons--1 single bond and 3 unpaired electrons--the two Carbons can share their unpaired electrons, forming a triple bond
2. Fat
3. Carbon serves as the
