Answer:
Which of the following is the best explanation for why the name is incorrect?
- The longest chain was not chosen.
- 4−tert−butyloctane
Explanation:
Let's think in the condensed formula:
CH₃C(CH₃)₂CH((CH₂)₃CH₃)CH₂CH₂CH₃.
We see that in the second carbon, we have two methyls and in the third carbon a butyl group.
But the name is incorrect because the longest chain was not chosen.
For IUPAC rules we have to determine:
- The longest main chain.
- From two chains of equal length, we may choose the most branched chain.
- It must be numbered starting from the end that has the closest branch.
- Each remainder is named as a substitute for the main chain
If we draw the alkane we have:
CH₃
|
CH₃ - C - - CH - - CH₂ -- CH₂ -- CH₃
| |
CH₃ CH₂
|
CH₂
|
CH₂
|
CH₃
The carbon in black, is the first carbon, if we start to number from the underlined carbon, we would have the first branch at carbon 5. We have 8 carbons, so if we start to count from the black carbon (carbon 1), the branch will be at the carbon 4, that's the main chain.
So finally, at the carbon 4 we have a tertiary carbon (it is a single carbon which is joined with 3 others carbons, and the single carbon is it joined to the main chain). That is the tert-butyl group.
As it is in the fourth position, we can say that the alkane's name is 4−tert−butyloctane.
Notice that tert-butyl is a common name but it is available by IUPAC.
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2. Calculate the volume for the following object If you know that the object has a mass of 24 grams and the density is 12 g/ml.
Answer:
2 ml=2 cm³
Explanation:
volume=mass/density
1ml= 1cm³
= 24g/12g/cm³
= 2 cm³
Answer:
2 ml=2 cm³
Explanation:
volume=mass/density
1ml= 1cm³
= 24g/12g/cm³ = 2 cm³
please mark me brainiest you said you would!
what happens when salt water freezes.
Answer:
salt water freezes just like fresh water, but at lower temperatures. Fresh water freezes at 32 degrees Fahrenheit but seawater freezes at about 28.4 degrees Fahrenheit , because of the salt in it. When salt water freezes, however, the ice contains very little salt because only the water part freezes.
Which of the is an example of climate???
Help pls?
List the color of the stars from hottest to lowest:
Answer:
Blue 25,000 K
White 10,000 K
Yellow 6000 K
Orange 4000 K
Red 3000 K
Explanation:
k = kelvin
What do potassium, titanium, and iron have in common?
How many cm is equal to 1450 nm?
a
1.45 x 10-8.cm
b 1.45 x 1010 cm
С
1.45 x 1014 cm
d
1.45 x 10-4 cm
Answer:
The answer is D; 1.45 x 10^-4
[ 6.5 ] In the space below, briefly explain why the average times for the two CO2 molecules you calculated should have been similar (or at least not significantly different). If a CO2 molecule starts out surrounded by other CO2 molecules, does this influence how quickly it will reach the other side of the leaf? You might find it helpful to reset the simulation and to re-examine the initial configurations of molecules. Collisions influence how molecules move, but do molecules only collide with other molecules of the same substance?
Answer:
This question is incomplete
Explanation:
This question is incomplete but there are two parts to this question that can generally be answered without the missing parts.
(1) If a CO₂ molecule starts out surrounded by other CO₂ molecules, does this influence how quickly it will reach the other side of the leaf?
What controls how quickly a CO₂ molecule/molecules enter into the leaf to the other parts of a leaf is the stomata on the leaf. Stomata are tiny openings on a plant leaf that allows for gaseous exchange (the release of oxygen and the absorption of CO₂) in the leaf.
(2) Collisions influence how molecules move, but do molecules only collide with other molecules of the same substance? NO
One of the kinetic theory of gases states that gases collide with one another and against the walls of the container. It should however be noted that, gas molecules of a particular substance can collide with gas molecules of other substances, so far they are within the same container.
Can someone help mw tho this please It would mean the world to me!!!
Answer:
the train
Explanation:
mechanical
A rectangular block of copper metal weighs 2695 g. The dimensions of the block are 4.8 cm by 5.5 cm by 6.4 cm. From this data, what is the density of copper? (Hint: Remember that volume = length x width x height)
Given parameters:
Mass of rectangular block of copper metal = 2695g
Dimensions of the block = 4.8cm x 5.5cm x 6.4cm
Unknown;
Density of the copper = ?
To solve this problem, we apply the density formula.
Density is an intensive property of all matter. It is defined as the mass per unit volume of any substance.
Mathematically,
Density = [tex]\frac{Mass}{Volume}[/tex]
The unit is usually in kg/m³ or g/cm³
Now, we need to derive the volume since mass is given already.
Volume of the rectangular block = length x width x height
= 4.8cm x 5.5cm x 6.4cm
= 168.96cm³
Let's solve for the density now;
input the parameters and solve;
Density of rectangular copper block = [tex]\frac{2695}{168.96}[/tex]
= 15.95g/cm³
The density of the copper rectangular block is 15.95g/cm³
Name and describe the process by which stars create energy.
Answer: Nuclear fusion- The simple answer is that deep inside the core of the Sun, enough protons can collide into each other with enough speed that they stick together to form a helium nucleus and generate a tremendous amount of energy at the same time.
How many moles are in 2.23 X 10^50 molecules of H2?
Answer:2.23
⋅
10
50
X
,
H
2
Explanation:
During the 1800s, when most of the elements were being
discovered, many chemists tried to classify the elements
based on their:
a Similarities
b Atomic mass
c Atomic numbers
d None of the above
Answer:
A; There Similarities
If a someone wanted to construct a telescope to observe infrared light in the galaxy who
would best be able to build it
physical engineer
thermal engineer
optical engineer
chemical engineer
Question 13
ipts
Answer:
optical engineer
Explanation:
Answer:optical engineer
Explanation: HOPE IT HELPS YOU .PLEASE GIVE BRAINLIEST THANKS . .
Do malfunctioning cells cause cancer?
this is science btw
Answer:
When certain faults appear in a cell's DNA it can send it into overdrive, making the cell grow and divide more than it should. But while faulty genes are a common thread across cancers, not all cancers have the same faulty genes. And not all cells that carry faulty genes will turn cancerous.
If im wrong correct me
Come up with your own definition for the word science
Answer:
You play with chemical
Explanation:
Answer:
S= super
C=cool
I=igloo
E=eggs
N=nuts
E=ello
Explanation:
well yes there ya go.
Which of the following ideas helps explain the factors that affect island colonization of and species richness for a region?
I. Species-area effect
II. Rescue effect
III. Target effect
IV. Time/stability hypothesis I and II
Il and III
I, II, IV
I, II, III, IV
Answer:
Its I, II, III, IV
Explanation:
I took the test
I, II, III, and IV factors that affect island colonization and species richness for a region. Hence, option D is correct.
What is colonization?Colonialism is defined as “control by one power over a dependent area or people.”
Immigration to an island is affected by the distance of the island from a source of colonists. Usually, this source is the mainland (and it will be for this lesson), but it can also be other islands. Islands that are more isolated are less likely to receive immigrants than islands that are less isolated.
Hence, the species-area effect, rescue effect, target effect and time/stability hypothesis affect island colonization and species richness for a region.
Learn more about the colonization here:
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Where can you find the number of electrons of an
element?
Answer:
Subtract the charge from the atomic number. When an ion has a positive charge, the atom has lost electrons. To calculate the remaining number of electrons, you subtract the amount of extra charge from the atomic number. In the case of a positive ion, there are more protons than electrons.
Explanation:
Answer:
Explanation:
electrons is same as the amount of protons. and protons are also same as the atomic #.
A large television requires a force of 390 N to be lifted. An average person can lift with a force of 50
N- how many average people would it take to move this large television? (Answer with a number)
5 people
10 people
8 people
Which electrons determine the reactivity of the atom?
Which of the following is an application of Newton's Third Law of Motion?
A. A skydiver falls away from a plane toward the ground.
B. A truck accelerates more slowly when it is fully loaded than when it is empty.
C. A ball sits on the ground until a player kicks it. The nonzero net force sets the ball in motion.
D. A rocket can accelerate when it pushes gas backward. The reaction force pushes the rocket forward.
Answer:
C
Explanation:
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Questions
Vacuoles are round organelles found in both plant and animal cells. Their primary function is to -
produce food and energy for the cell.
control the activities of the cell.
transport materials between parts of the cell.
O
store water, waste, and nutrients for the cell.
Answer:
store water, waste, and nutrients for the cell
When writing equations the mass on the left of the arrow must
equal the mass on the right of the arrow.
Answer:
When writing equation the mass on left side of equation must be equal to the mass on right side. True
Explanation:
The chemical reactions always follow the law of conservation of mass.
Law of conservation of mass:
According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.
Explanation:
This law was given by french chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
For example:
In photosynthesis reaction:
6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂
there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass because total mass is equal on both side of equation.
Which model is useful in showing the reactivity of potassium?
Answer:we need the pic bro
Explanation:
formula for the chemical reaction of limescale
Explanation:
(Ca)² +( CO3)²− ⇋ CaCO3
Which of the following does NOT indicate a chemical reaction occurred? A. A gas being produced B. A solid being formed when mixing two liquids C. a sudden unexpected chnage in temperature D. A solid melting into a liquid
Answer:
D) A solid melting into a Liquid.
what is the percent yield of NH3 when 15.0 grams of nitrogen gas react with an excess of hydrogen gas to produce 15.4 grams of NH3?
Answer:
84.6%
Explanation:
The percent yield of NH₃ when 15.0 grams of nitrogen gas reacts with an excess of hydrogen gas to produce 15.4 grams of NH₃ is 84.57%.
What is the percent yield?"Percent yield is the deviation in the percent of theoretical yield to the percent of actual yield."
Percent yield = actual yield / theoretical yield x 100
The chemical equation will be
N₂ + 3H₂ = 2NH₃
In the reaction, the limiting reagent is N₂, and the percent yield is calculated by the limiting reagent.
By the reaction, we can see that 1 mol of N₂ produces 2 mol of NH₃
28 grams of N₂ will produce 34 grams of NH₃
15.0 N₂ will produce 34 x 15 / 28 = 18.21 grams of NH₃
The actual yield is 15.4
The theoretical yield is 18.21
Percent yield = 15.4 / 18.21 x 100 = 84.57%.
Therefore, the percent yield of NH₃ is 84.57%.
To learn more about percent yield, refer to the link:
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Which element is a non reactive gas?
Lead (82)
Argon (18)
Gold (79)
Nitric acid is made by a sequence of reactions, shown below. 4NH3(g) +5O2(g) = 4NO(g) + 6H2O(g)
2NO(g) + O2(g) = 2NO2(g)
3NO2(g) + H2O(g) = 2HNO3(g)+ NO(g)
If the first reaction occurs with 96.2% yield, the second reaction occurs with a 91.3% yield and the third reaction proceeds with a 91.4% yield, calculate the following:
(a) The grams of nitric acid produced from 1216 grams of ammonia. (b) The percent yield for the overall process
Answer:
(a) [tex]m_{HNO_3}=2412gHNO_3[/tex]
(b) [tex]Y=80.3\%[/tex]
Explanation:
Hello.
(a) In this case, by starting with 1216 grams of ammonia, we can firstly compute the yielded moles of NO in the first reaction considering the given yield as a fraction (0.962):
[tex]n_{NO}=1216 g NH_3*\frac{1molNH_3}{17gNH_3}*\frac{4molNO}{4molNH_3}*0.962=68.81molNO[/tex]
Next, in the second chemical reaction we compute the yielded moles of NO₂ with the 91.3-percent:
[tex]n_{NO_2}=68.81molNO*\frac{2molNO_2}{2molNO}*0.913=62.82molNO_2[/tex]
Finally, for the percent yield of the last chemical reaction and the molar mass of nitric acid (63 g/mol) we compute the yielded grams of nitric acid:
[tex]m_{HNO_3}=62.82molNO_2*\frac{2molHNO_3}{3molNO_2} *\frac{63gHNO_3}{1molHNO_3}*0.914\\ \\m_{HNO_3}=2412gHNO_3[/tex]
(b) In this case, we compute the moles of NO, NO₂ and the grams of nitric acid as well as the previous literal yet removing the percent yields since we are going to compute theoretical yields:
[tex]n_{NO}=1216 g NH_3*\frac{1molNH_3}{17gNH_3}*\frac{4molNO}{4molNH_3}=71.53molNO[/tex]
[tex]n_{NO_2}=71.53molNO*\frac{2molNO_2}{2molNO}=71.53molNO_2[/tex]
[tex]m_{HNO_3}=71.53molNO_2*\frac{2molHNO_3}{3molNO_2} *\frac{63gHNO_3}{1molHNO_3}*0.914=3004gHNO_3[/tex]
Thus, the overall percent yield is:
[tex]Y=\frac{2412g}{3004g} *100\%\\\\Y=80.3\%[/tex]
Best regards.
Draw the structure of the product that is formed when the compound shown below undergoes a reaction with PhMgBr and then is treated with water.
Answer:
please find the attached file.
Explanation:
Explain the "Law of Conservation of Mass". Provide an example to support your explanation
Answer:
The law of conservation of mass states that mass is neither created nor destroyed by chemical reactions the law of conservation of mass was created in 1789 by a French chemist who discovered that matter cannot be created or destroyed in a chemical reaction according to the law conservation of mass the mass of the products in a chemical reaction must equal the mass of the reactants.113 grams when you mix baking soda and vinegar you get a chemical reaction and gas is produced after the reaction the mass of the products is still 113 grams the same as the mass of the reactants the mass of the array Acton's was not created or destroyed it was merely rearranged the balanced equation for this reaction.
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