For 6.44 x 10^23 atoms:
That amount is 1.07 moles of Cl atoms
multiply the number of moles by the molar mass of Cl which is 35.45
That equals 37.9 grams of Cl. You only use 1 decimal place because there are only 3 significant digits.
Now if it is a text book problem that says chlorine gas, it may be referring to atmospheric Cl gas which is Cl2
In that case, its just 1.07 moles x 70.9 (molar mass of Cl2)
That turns out to be 75.9 g Cl2
If a light bounced off at a 40 degree angle it would bounce off at an 80 degree angle. Hope i am right
Answer:
Its official chemical symbol is O, and its atomic number is 8, which means that an oxygen atom has eight protons in its nucleus
Explanation: I hope this helps!!!!!
Answer:
pH = 9.25
Explanation:
Reaction of ammonia (NH₃) with hydrochloric acid (HCl) is:
NH₃ + HCl → NH₄⁺ + Cl⁻
As equal volumes of a 0.020M solution of NH₃ and a 0.010M solution of react, molarity of NH₃ after reaction is 0.010M and 0.010M of NH₄⁺.
For the buffer NH₄⁺/NH₃ H-H equation to find pH of solution is:
pH = pKa + log₁₀ [NH₃] / [NH₄⁺]
pH = 9.25 + log₁₀ [0.010M] / [0.010M]
<em>pH = 9.25</em>