<u>Answer:</u> The formation of given amount of oxygen gas results in the absorption of 713 kJ of heat.
<u>Explanation:</u>
To calculate the number of moles, we use the equation:
Given mass of oxygen gas = 83 g
Molar mass of oxygen gas = 32 g/mol
Putting values in above equation, we get:
For the given chemical equation:
<u>Sign convention of heat:</u>
When heat is absorbed, the sign of heat is taken to be positive and when heat is released, the sign of heat is taken to be negative.
By Stoichiometry of the reaction:
When 3 moles of oxygen gas is formed, the amount of heat absorbed is 824.2 kJ
So, when 2.594 moles of oxygen gas is formed, the amount of heat absorbed will be = 
Hence, the formation of given amount of oxygen gas results in the absorption of 713 kJ of heat.
Answer:
[H⁺] = 3.98×10⁻⁷ M
Explanation:
Given data:
pH of blood = 6.40
Hydrogen ion concentration = ?
Solution:
Formula:
pH = - log[H⁺]
by rearranging this formula,
[H⁺] = 10⁻(pH)
By putting values,
[H⁺] = 10 ⁻⁶°⁴⁰
[H⁺] = 3.98×10⁻⁷ M
Answer:
the adjective is the word "famous" because an adjective describes a noun. and ben franklin is the noun here. (or subject.)
Answer:I found out that it is c
Explanation:Find an answer to your question Determine the amplitude or period as requested. Period of y = 4sin 1/3x a. 4 b. Pi/4 c. 4pi/3 d. 6pi.
Answer:
720 000
Explanation:
7.2
×
10
5
is already expressed in
standard form
I believe you mean express as
original number
To do this consider
10
5
or more generally
10
n
where n is an integer.
• If n > 0
move decimal point n places to the right
• If n < 0
move decimal point n places to the left
here n = 5 > 0, hence move decimal point 5 places to the right.
⇒
7
∙
2
→
720000
∙
⇒
7.2
×
10
5
=
720
000
Explanation:
