Answer:
A because science is not to be a math subject
Answer:
B. CH₅N
Explanation:
The combustion reaction of a compound CₐHₓNₙ with O₂ is:
CₐHₓNₙ + O₂ → a CO₂ + X/2 H₂O + n NO₂
Where 1 mole of CₐHₓNₙ with an excess of O₂ produce a moles of CO₂, X/2 moles of H₂O and n moles of NO₂
Thus, you need to convert the mass of CO₂ and H₂O to moles to find the C:H ratio and determine a possible empirical formula thus:
Moles CO₂ (Molar mass 44g/mol):
44g ₓ (1mol / 44g) = 1 mole CO₂ = 1 mole C
Mole of H₂O (Molar mass 18g/mol):
45g ₓ (1 mol / 18g) = 2.5 moles H₂O = 5 moles H
Thus, in the compound you have 5 moles of H per mole of C, and a possible empirical formula is:
B. CH₅N
The only structure that meet this C:H ratio
Answer:
The starting number is 78.
Explanation:
(x / 3) / 2 = 13
divide a number by 3 (x / 3)
divide in half (x / 3) / 2
You get 13 (x / 3) / 2 = 13
Reverse the problem.
13 * 2 = 26
26 * 3 = 78
x = 78
Plug in the number.
(78 / 3) / 2 = 13
78 / 3 = 26
26 / 2 = 13
Personally I think it’s easiest to read over just the definitions over and over and then go back to the words and say oh yeah that’s this definition also make sure u don’t memorize them in order IT WONT BE THAT WAY ON THE TEST anddd quizlet is ur bff bc they usually have any or most sets or vocab
The emblem which signifies progress and holds a promise tomorrow will bring a new day, glowing with opportunity is rising sun.
Given that the emblem signifies progress and holds a promise tomorrow will bring a new day, glowing with opportunity.
We are required to give the name of the emblem.
An emblem is basically an abstract or representational pictorial image that represents a concept, like a moral truth, or an allegory, or a person, like a king or saint.
The emblem which signifies progress and holds a promise tomorrow will bring a new day, glowing with opportunity is rising sun.
Hence the emblem which signifies progress and holds a promise tomorrow will bring a new day, glowing with opportunity is rising sun.
Learn more about promise at brainly.com/question/926522
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