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Anarel [89]
4 years ago
13

What are the formulas?

Chemistry
2 answers:
shtirl [24]4 years ago
7 0
Formulas are like steps to solve an equation but in cemistry a formula is 2 or more elements combined to make something

sergey [27]4 years ago
6 0
Formulas are like equations. They are very similar
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Why is energy a conceptual model?
alexgriva [62]

Answer:

Conceptual energy modeling does not produce the same accurate results as energy modeling with building elements

3 0
3 years ago
Which correctly summarizes the trend in electron affinity?
ra1l [238]

The answer is it tends to be more negative down a group. This is because as you go down the periodic table, the elements have more electron shells in their atoms. This makes the outermost shells less attracted to the nucleus due to their greater distances from the nucleus. Therefore, these shells are less likely to attract electrons (hence lower electron affinity) and are even more likely to lose electrons from their outer electron orbits.

4 0
4 years ago
Read 2 more answers
Fill in the [?]: 5,481 g = [?] lb. ​
Sophie [7]

Answer:

12.084 lb

Explanation:

1 gram = 0.00220462 lb

multiply number of grams by 0.00220462

Ex. 2000 g x 0.00220462 = 4.409 pounds

5 0
3 years ago
What is an exothermic reaction?
blsea [12.9K]
DescriptionAn exothermic reaction is a chemical reaction that releases energy through light or heat. It is the opposite of an endothermic reaction. Expressed in a chemical equation: reactants → products + energy. Exothermic Reaction means "exo" meaning releases and "thermic" means heat.
3 0
3 years ago
The two reactions above, show routes for conversion of an alkene into an oxirane. If the starting alkene is cis-3-hexene the con
gtnhenbr [62]

Answer:

Product A: cis; no

Product B: cis: no  

Explanation:

Two common methods of forming oxiranes from alkenes are:

  • Reaction with peroxyacids
  • Formation of a halohydrin followed by reaction with base

1. Reaction with peroxyacids

(a) Stereochemistry

The reaction with a peroxyacid is a syn addition, so the product has the same stereochemistry as the alkene.

The starting alkene is cis, so the product is <em>cis</em>-2,3-diethyloxirane.

(b) Configuration

The product is optically inactive because it has an internal plane of symmetry.

It will not rotate the plane of polarized light.

2. Halohydrin formation

(a) Stereochemistry

The halogenation of the alkene proceeds via a cyclic halonium ion.

The backside displacement of halide ion by alkoxide is also stereospecific, so a cis alkene gives a cis epoxide.

The product is <em>cis</em>-2,3-diethyloxirane.

(b) Configuration

The cyclic halonium ion has an internal plane of symmetry, as does the product (meso).

The oxirane will not rotate the plane of polarized light.

 

8 0
4 years ago
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