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inn [45]
3 years ago
7

What element is least likely to be found in nature

Chemistry
1 answer:
Doss [256]3 years ago
5 0

Answer:

uranium, caesium, potassium, beryllium,

Explanation:

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Describe at least two ways that a researcher can minimize experimental errors in an investigation
snow_tiger [21]
Experimental errors occurs in the execution of experiment design. Example of experimental errors are  mistakes in data entry, systematic error, and random error caused by environmental conditions. Did you even heard about type I and type II error? Because that may be the 2 ways you are looking for.  
A false positive is called a Type I error, and it is the type of error that incorrectly rejecting the null hypothesis in the favor of the alternatives.
A false negative is what you called Type II error, it is the opposite of type I error and it is the false acceptance of the null hypothesis. A type II errors are not seen to be as problematic as type I error, type I error is more serious than type II error, because you have wrongly rejected the null hypothesis.
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Which term refers to the maximum number of organisms of a particular species that can be supported by an environment?
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O A Population density
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3 years ago
The reaction A+B-> C+D rate=k[A][B]^2 has an initial rate of 0.0810 M/s. What will the initial rate be if [A] is halved and [
makkiz [27]
The first to do is to isolate the constant, k, to one side. The rate expression would then be:

k = rate/ <span>[A][B]^2 

This constant, k, will be the same for the given reaction at a certain temperature. Then, we can relate a second rate to this reaction.

</span>rate1/ [A1][B1]^2 = rate2/ [A2][B2]^2 

First question:
0.0810 / [A1][B1]^2 = rate2/ <span>[A2/2][3B2]^2 
rate2 = (</span>0.0810 [A2/2][3B2]^2 )/ [A1][B1]^2
rate2 = 0.3645 M/s

Second Equation:
0.0810 / [A1][B1]^2 = rate2/ <span>[A2/2][3B2]^2 
rate2 = (</span>0.0810 [3A2][B2/2]^2 )/ [A1][B1]^2
<span>rate2 = 0.0608 M/s</span>
3 0
3 years ago
Molybdenum v phosphate formula
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The formula is Mo₃(PO₄)₅
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3 years ago
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The following name is wrong. Draw the structure based on it and correct the name: 1,1,1−trimethylheptane
Nana76 [90]

2,2-Dimethyloctane is the correct name.

Eight C atoms make up the longest continuous carbon chain, hence the term "octane" for this molecule.

<h3>Description of the chemical structure</h3>
  • There are 31 bonds in the 2,2-Dimethyloctane molecule overall (s) There are 5 rotatable bonds and 9 non-H bonds (s).
  • Skeletal formula, which is the accepted notation for organic compounds, is another name for the 2D chemical structure illustration of 2,2-Dimethyloctane.
  • Skeletal formula, which is the accepted notation for organic compounds, is another name for the 2D chemical structure illustration of 2,2-Dimethyloctane.
  • In the 2,2-Dimethyloctane chemical structure, the carbon atoms are implied to be at the corner(s) and hydrogen atoms coupled to carbon atoms are not mentioned; instead, it is assumed that each carbon atom is connected to enough hydrogen atoms to form four bonds.
  • Based on the ball-and-stick model, which shows both the three-dimensional position of the atoms and the bonds tying them together, the 3D chemical structure image of 2,2-Dimethyloctane is created.
  • In order to provide a clearer picture of the atoms and bonds throughout the 2,2-Dimethyloctane chemical structure model, the radius of the spheres is thus smaller than the rod lengths.
<h3>Molecular Formula - C_{10} H_{22}</h3><h3>Chemical Properties</h3>
  • Calculated Log P: 6.434 
  • Molecular Weight: 142.2838
  • Bonds That Rotate: 9  
  • H  Acceptors : 
  • H Donors: 0
<h3>uses </h3>

2,2-Dimethyloctane, a gasoline hydrocarbon byproduct of aerobic biodegradation.

learn more about Dimethyloctane here

<u>brainly.com/question/16050000</u>

#SPJ4

4 0
2 years ago
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