The molar concentration will be greater than 0.01 M
.
Since more of the compound was measured out than what was calculated, you can think of the solution as being 'stronger' than what it was calculated to be. Since a 'stronger' concentration results in a number that is higher, the molarity of this solution is going to be greater than 0.01 M.
Planets reflect sunlight. Most planets are close enough to the sun that they can reflect its light and that is why you can see them. Some planets that are far from the sun do not light up because they have no light to reflect.
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Since the compound has 1.38 time that of oxygen gas at the same conditions of temperature and pressure, we have the relationship:
MW/MWoxygen = 1.38
MW = 44.16
Since there is water formed during the reaction, the formula of the compound must be:
XaHb
where a and b are the coefficients of each element.
If the compound reactions with oxygen forming water and an oxide of the element X, the combustion reaction must be:
XaHb + ((2a + (b/2))/2) O2 = a (XO2) + (b/2)(H2O)
Using dimensional analysis:
10 (1/44.16) (b/2 / 1) (18) = 16.3
Solving for b:
b = 8
The compound now is XaH8. Most probably, the compound is C3H8 since it has a molecular formula of 44 and it reacts with O2 to form water and CO2.
Answer:
Nickel(II) cyanide is an inorganic compound with a chemical formula Ni(CN)₂
Explanation:
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Answer:
1. d[H₂O₂]/dt = -6.6 × 10⁻³ mol·L⁻¹s⁻¹; d[H₂O]/dt = 6.6 × 10⁻³ mol·L⁻¹s⁻¹
2. 0.58 mol
Explanation:
1.Given ΔO₂/Δt…
2H₂O₂ ⟶ 2H₂O + O₂
-½d[H₂O₂]/dt = +½d[H₂O]/dt = d[O₂]/dt
d[H₂O₂]/dt = -2d[O₂]/dt = -2 × 3.3 × 10⁻³ mol·L⁻¹s⁻¹ = -6.6 × 10⁻³mol·L⁻¹s⁻¹
d[H₂O]/dt = 2d[O₂]/dt = 2 × 3.3 × 10⁻³ mol·L⁻¹s⁻¹ = 6.6 × 10⁻³mol·L⁻¹s⁻¹
2. Moles of O₂
(a) Initial moles of H₂O₂
![\text{Moles} = \text{1.5 L} \times \dfrac{\text{1.0 mol}}{\text{1 L}} = \text{1.5 mol }](https://tex.z-dn.net/?f=%5Ctext%7BMoles%7D%20%3D%20%5Ctext%7B1.5%20L%7D%20%5Ctimes%20%5Cdfrac%7B%5Ctext%7B1.0%20mol%7D%7D%7B%5Ctext%7B1%20L%7D%7D%20%3D%20%5Ctext%7B1.5%20mol%20%7D)
(b) Final moles of H₂O₂
The concentration of H₂O₂ has dropped to 0.22 mol·L⁻¹.
![\text{Moles} = \text{1.5 L} \times \dfrac{\text{0.22 mol}}{\text{1 L}} = \text{0.33 mol }](https://tex.z-dn.net/?f=%5Ctext%7BMoles%7D%20%3D%20%5Ctext%7B1.5%20L%7D%20%5Ctimes%20%5Cdfrac%7B%5Ctext%7B0.22%20mol%7D%7D%7B%5Ctext%7B1%20L%7D%7D%20%3D%20%5Ctext%7B0.33%20mol%20%7D)
(c) Moles of H₂O₂ reacted
Moles reacted = 1.5 mol - 0.33 mol = 1.17 mol
(d) Moles of O₂ formed
![\text{Moles of O}_{2} = \text{1.33 mol H$_{2}$O}_{2} \times \dfrac{\text{1 mol O}_{2}}{\text{2 mol H$_{2}$O}_{2}} = \textbf{0.58 mol O}_{2}\\\\\text{The amount of oxygen formed is $\large \boxed{\textbf{0.58 mol}}$}](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%20O%7D_%7B2%7D%20%3D%20%5Ctext%7B1.33%20mol%20H%24_%7B2%7D%24O%7D_%7B2%7D%20%5Ctimes%20%5Cdfrac%7B%5Ctext%7B1%20mol%20O%7D_%7B2%7D%7D%7B%5Ctext%7B2%20mol%20H%24_%7B2%7D%24O%7D_%7B2%7D%7D%20%3D%20%5Ctextbf%7B0.58%20mol%20O%7D_%7B2%7D%5C%5C%5C%5C%5Ctext%7BThe%20amount%20of%20oxygen%20formed%20is%20%24%5Clarge%20%5Cboxed%7B%5Ctextbf%7B0.58%20mol%7D%7D%24%7D)