Let's assume ideal gas behavior for simplicity. We could use the equation below:
PV=nRT
Solve for n or the number of moles.
n = PV/RT = (3×10⁻³ atm)(1 L)/(0.0821 L·atm/mol·K)(250 K)
n = 1.462×10⁻⁴ moles ozone
For every 1 mole of any substance, Avogadro stipulated that there is an equivalent of 6.022×10²³ molecules. Thus,
# of ozone molecules = 1.462×10⁻⁴ mol * 6.022×10²³ molecules/1 mol
<em># of ozone molecules = 8.8×10¹⁹</em>
Answer:
Ionic bonds are a type of linkage formed from the attraction between oppositely charged ions. The atom that has lost an electron becomes a positively charged ion (called a cation) while the atom that picks up the extra electron becomes a negatively charged ion (called a anion).
Explanation:
I don't exactly know the answer to your question but this is what I know.
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Answer:
10 atm.
Explanation:
Using the combined gas law equation as follows;
P1V1/T1 = P2V2/T2
Where;
P1 = initial pressure (atm)
P2 = final pressure (atm)
V1 = initial volume (L)
V2 = final volume (L)
T1 = initial temperature (K)
T2 = final temperature (K)
According to the information provided in this question,
P1 = 5 atm
P2 = ?
V1 = 4L
V2 = 2L
T1 = 25°C = 25 + 273 = 298K
T2 = 25°C = 298K
Using P1V1/T1 = P2V2/T2
5 × 4/298 = P2 × 2/298
20/298 = 2P2/298
Cross multiply
298 × 20 = 298 × 2P2
5960 = 596P2
P2 = 5960 ÷ 596
P2 = 10 atm.
Answer:
(D) (I) the H—X bond is stronger than the H—Y bond, and (II) X is less electronegative than Y.
Explanation:
A large Ka value indicates a strong acid because it means the acid is largely dissociated into its ions. A large Ka value also means the formation of products in the reaction is favored. As the electronegativity of an atom increases from left to right across a row, the acidity increases.
The higher the electronegativity of an atom, greater is its tendency to pull towards itself the pair of electrons that form the bond. This, in true effect, leads to a reduction in the bond length and therefore makes it harder cleave.
Answer:
Explanation:
This question is incomplete. However, let's understand what a single displacement reaction is and what occurs during such reactions.
A single displacement reaction is a reaction in which a more reactive element displaces/replaces a less reactive element in a compound. The reactions below depict a single displacement reaction.
A + BC ⇒ AC + B
2Al + Fe₂O₃ ⇒ Al₂O₃ + 2Fe
During chemical reactions, heat is either absorbed from the environment (endothermic reaction) or given off into the environment (exothermic reaction). <u>During bond formation (in a reaction), heat is released into the environment (exothermic) while when bonds are broken, heat is absorbed from the environment (endothermic).</u>
During single displacement reaction, heat is given off, hence single displacement reaction is an exothermic reaction because it involves the formation of a bond (for the compound formed in the product).
Please note that <u>it can be argued that bonds were also broken in the reactants before new ones are formed in the products, however the bonds broken in the reactant do not require much heat from the environment because the more reactive element ordinarily has a higher activity than the displaced element thus, the entire reaction produces heat (exothermic) when the new bond is being formed</u>.
What is usually observed during a single displacement reaction is the release of heat and this shows the reaction is an exothermic reaction.