Answer:
CH
Explanation:
Polystyrene is composed only by C and H.
We can calculate the number of C moles contained in the original sample mass (0.00215 g), using the produced mass of CO₂:
0.00726 g CO₂ ÷ 44 g/mol = 1.65x10⁻⁴ mol CO₂As 1.65x10⁻⁴ moles of CO₂ were produced, in the polystyrene sample there were 1.65x10⁻⁴ moles of C.
Now we calculate how many moles of H₂O were produced:
0.00148 g H₂O ÷ 18 g/mol = 8.22x10⁻⁵ mol H₂OThe number of H moles produced is double the amount of H₂O moles, so in the polystyrene sample there were 1.64x10⁻⁴ moles of H.
The number of C and H moles are the same, this means the empirical formula is CH.
What is climate? What are three things that cause the earths climate?
Answer:
The climate has been caused by many natural factors including changes in the sun emissions from volcanoes variations in Earth's orbit and levels of carbon dioxide. Global climate change has typically occured very slowly over thousands or millions of years .The three causes of the Earth's climate are
Industrial activitiesAgricultural activitiesDeforestationthese are the causes of the Earth's climate.
Climate is a average weather in a given area for a long period of time is called a climate
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Answer: The name of the super continent that existed millions of years ago.
Explanation:
Our continents as they exist today were once joined together into a super continent known as Pangea. Over the millennia, the land masses broke off and drifted away creating the location of the continents we know today.
(つ ^‿^ )つ Hey there!
Answer → Is the second answer, The name of the super continent that existed millions of years ago.
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