Answer:
Over ninety percent of all the atoms in the Universe are hydrogen atoms.
Explanation:
Over ninety percent of all the atoms in the Universe are hydrogen atoms. By mass, hydrogen makes up about 75% of all matter in the Universe. Hydrogen atoms are also the smallest and lightest of all the atoms with only one electron and one proton in a common single hydrogen atom (called protium).
Answer: The time is 0.69/k seconds
Explanation:
The following integrated first order rate law
ln[SO₂Cl₂] - ln[SO₂Cl₂]₀ = - k×t
where
[SO₂Cl₂] concentration at time t,
[SO₂Cl₂]₀ initial concentration,
k rate constant
Therefore, the time elapsed after a certain concentration variation is given by:
![t=\frac{ln[SO_{2}Cl_{2}]_{0} - ln[SO_{2}Cl_{2}]}{k}=\frac{ln\frac{[SO_{2}Cl_{2}]_{0}}{[SO_{2}Cl_{2}]} }{k}](https://tex.z-dn.net/?f=t%3D%5Cfrac%7Bln%5BSO_%7B2%7DCl_%7B2%7D%5D_%7B0%7D%20-%20ln%5BSO_%7B2%7DCl_%7B2%7D%5D%7D%7Bk%7D%3D%5Cfrac%7Bln%5Cfrac%7B%5BSO_%7B2%7DCl_%7B2%7D%5D_%7B0%7D%7D%7B%5BSO_%7B2%7DCl_%7B2%7D%5D%7D%20%7D%7Bk%7D)
We could assume that SO₂Cl₂ behaves as a ideal gas mixture so partial pressure is proportional to concentration:
![[SO_{2}Cl_{2}]= \frac{n_{(SO_{2}Cl_{2})}}{V}}=\frac{p_{(SO_{2}Cl_{2})}}{RT}}](https://tex.z-dn.net/?f=%5BSO_%7B2%7DCl_%7B2%7D%5D%3D%20%5Cfrac%7Bn_%7B%28SO_%7B2%7DCl_%7B2%7D%29%7D%7D%7BV%7D%7D%3D%5Cfrac%7Bp_%7B%28SO_%7B2%7DCl_%7B2%7D%29%7D%7D%7BRT%7D%7D)
In conclusion,
t = ln( p(SO₂Cl₂)₀/p(SO₂Cl₂) )/k
for
Answer:
The answer to your question is below
Explanation:
1) 0.143g of Mg into atoms
- Look for the atomic number of Magnesium in the Periodic table
Atomic number = 24.31 g
-Use the Avogadro's number to find the number of atoms
24.31g ------------------- 6.023 x 10²³ atoms
0.143 g ----------------- x
x = (0.143 x 6.023 x 10²³) / 24.31
x = 8.613 x 10²² / 24.31
x = 3.54 x 10²¹ atoms
2) 0.101 kg of Ti into atoms
-Look for the atomic number of Titanium in the Periodic table
Atomic number = 47.87 g
-Use the Avogadro's number to find the number of atoms
47.87 g --------------------- 6.023 x 10²³
101 g ---------------------- x
x = (101 x 6.023 x 10²³) / 47.87
x = 6.08x 10²⁵ / 47.87
x = 1.27 x 10²⁴ atoms
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Answer:
The concentration of dilute solution is 0.72M
Explanation:
According to the given question
V1=30 ml
S1 = 12 M
V2= 500 ml
then S2 =?
we all know that V1S1=V2S2
or S2= V1S1÷V2
or S2 = 30×12÷500
or S2= 360÷500
or S2 =0.72 M.
The concentration of dilute solution is 0.72 M
