Answer:
he formula mass of ammonia is 14 + 1 3 = 17. The number of moles in 36 g ammonia is 36/ 17 = 2.11mol. A mole is 6.02 10, so the number of hydrogen atoms in a 2.11 moles of ammonia is 2.11 *6.02*10^23 = 1.27 *10^24 atoms
Explanation:
The answer you’re looking for is
C.
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Answer: OXYGEN
Explanation:
As density is given as,
d = P M / R T
Solving for M,
M = d R T / P ------ (1)
Data Given:
d = 1.25 × 10⁻⁶ g/cm³ = 0.00125 g/L
R = 0.08206 L.atm.mol⁻¹.K⁻¹
T = 40 °C + 273 = 313 K
P = 1.00 × 10⁻³ atm
Putting values in eq. 1,
M = (0.00125 g.L⁻¹ × 0.08205 atm.L.mol⁻¹.K⁻¹ × 313 K) ÷ 1.0 × 10⁻³ atm
M = 32.10 g/mol
Result:
Molecular Mass of O₂ is 32 g/mol.
The Ionic and polar covalent bonds are strongly attractive.
<span>star is born when clouds of dust and elements are gathered together in a certain space due to gravity, more and more mass and therefore pressure builds. when the pressure becomes enough to overcome the electronic repulsive force between two hydrogen nuclei, they are forced together and massive amounts of energy are given off forming helium atoms. this energy is then used to fuse other nuclei together. this could be compared to the way human life starts, where instead of 2 nuclei joining together to start a life cycle, two gametes, or sex cells are joined together. </span>