CHEMISTRY HIGH SCHOOL

What is not part of the cell theory except organism

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What has the same number of valence electrons in the outermost shell?“These ____ have the same number of valence electrons in their outermost shell.”


Word bank-
Groups
Families
Periods
Electrons

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Answer:

Groups

Explanation:

Elements with the same number of valence electrons are found in the same column(group) of the Periodic Table.

Match each molecular formula to the corresponding empirical formula. 1) C₄H₈O₂ 2) C₄H₁₂O₄ 3) C₂H₁₀O₂ A) CH₃O B) CH₅O C) C₂H₄O

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So empirical formulas would be the most simplified version where the proportions of the elements are the most simplified version. The best way to think of this would be like a recipe. If you want to make one cake and it says use two eggs then when you want two cakes you use four eggs. Each element works similarly. 1) divide by two as the greatest common factor (GCF) between 4,8, and 2 is 2 making 1) simplify to C2H4O so 1) C4H8O2 is the molecular formula of C)C2H4O. Then for 2) C4H10O4 we think of the GCF again. Biggest factor or GCF between 4,12,and 4 is 4, so divide the numbers in C4H12O4 by 4 making CH3O which is choice A) CH3O making 2) the molecular formula of A). Lastly do the same thing but from process of elongation 3) would be the molecular formula of B) CH5O. :) hope this helps :)))

Final answer:

The molecular formula C4H8O2 corresponds to the empirical formula C2H4O, C4H12O4 corresponds to CH3O, and C2H10O2 corresponds to C2H5O.

Explanation:

In chemistry, an empirical formula represents the simplest whole-number ratio of atoms in a compound, while a molecular formula represents the actual number of atoms in a molecule of the compound. To match each molecular formula to the corresponding empirical formula, divide the subscripts in the molecular formula by their greatest common factor. Hence:

  1. C4H12O4 matches with B) CH3O
  2. C2H10O2 fits with C) C2H5O

Learn more about Empirical and Molecular Formulas here:

brainly.com/question/32469611

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The best method to improve air quality is to

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Stop littering and polluting
Hi There!

The best method to improve air quality? I'm going to do indoor. :P

•Circulate, Circulate

•Renovate Wisely

•Filter Refresher

•Common Scents

•Clean 

Permafrost soil (gelisol) is _______.a. resistant to erosion
b. fragile
c. rich in microorganisms
d. a fast developing soil.

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Permafrost soil (gelisol) is b) fragile. 

Option B, fragile, is the right answer.

The Permafrost soil (Gelisol) are found very harsh and cold weather such as Arctic and Antarctic. The Gelisol are simply corroded soils, fragile and their finding near the extreme ice covers presents them valuable indicators of the early symbols of global warming. Permafrost in these soils found within two meters of the surface of the soil.

Which of the following instruments is used to measure air pressure? A. Thermometer
B. Barometer
C. Hygrometer
D. Anemometer

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The barometer is used to measure air pressure. 

Answer: Barometer 
A barometer measures air pressure

The first barometer was invented in the early 1600. The first barometer had mercury in a small basin with an upside down glass tube placed in the mercry.

The cenozoic era is also referred to as the

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The Cenozoic era is also referred to as the Age of Mammals, or Age of Birds, because mammals and birds dominated. 
The Cenozoic era is also referred to the ... Age of Mammals
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