Answer:
the answer is D =decreasing the temperature ️️️
Which functional group is shown below?
cd
R
O-R
A. Amino
B. Hydroxy!
C. Ether
D. Ester
Ester functional group is the given image. Therefore, the correct option is option D among all the given options.
What is functional group?A functional group in organic chemistry is a substituent and moiety inside a molecule that triggers the molecule's distinctive chemical processes. No matter how the rest of a molecule is made up, the very same functional group would experience the same or a similar set of chemical events.
This permits the planning of chemical synthesis as well as the methodical prediction of chemical changes and the behavior of chemical molecules. Other functional groups close by can affect a functional group's reactivity. Retrosynthetic analysis can be used to design organic synthesis by using functional group interconversion. Ester functional group is the given image.
Therefore, the correct option is option D.
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Answer: D. Ester
Explanation:
the crane dropped the 75 kg mass with velocity of 3.2m/s. Calculate the kinetic energy of the mass
Answer:
click the link
Explanation:
Which chemical equation represents a synthesis reaction?A.HCl + LiOH → LiCl + H2OB.2Na + MgCl2 → 2NaCl + Mg.H2CO3 → H2O + CO2D.C + O2 → CO2
Answer:
H20 +CO2 >H2CO3
Explanation:
Please don't report me just want to help and if this helped please leave a heart.
The chemical reaction that represents a synthesis reaction is C +O2 → CO2.
What is a synthesis reaction?A synthesis reaction is a type of chemical reaction in which new compounds or substance are formed from the interaction of two elements.
It is the formation of new substances or products.
Therefore, The chemical reaction that represents a synthesis reaction is C +O2 → CO2.
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What is one thing people can do to protect biodiversity?
Which is a process that involves collecting information and ideas that are supported by belief or opinion?
science
systematics
pseudoscience
hypothesis
Answer:
The answer is C
Explanation:
I did it on edge
Here is number 1 thank you again
Answer: i believe the answer is stayed the same
I hope u get this right
GIVE ME BRAINLIEST!!!!
nah im jk lol
ANYWAY HAVE A GREAT DAY!
Answer:
okie then you too
A certain reaction is exothermic in the forward direction and has a greater number of molecules on the product side. Which actions should be used to increase the yield of the products?
Increase the temperature and increase the pressure.
Increase the temperature and decrease the pressure.
Decrease the temperature and decrease the pressure.
Decrease the temperature and increase the pressure.
Answer:
increase in the temperature and decrease in pressure will do because it need to liberate heat
how many moles are in 52 grams of o2
Answer:
1.625 moles
Explanation:
mole=mass/molar mass
mole= 52/25
What characteristic of the light is affected by the amplitude of the light
wave
(A) color
(B) brightness
Answer:
I think B but I'm not sure.
Answer: Amplitude of the light wave impacts brightness; the wavelength is what impacts/is associated with color.
Calculation of the number of grams of salt and water of 10 grams of eye drops, if the weight of the salt in the solution is 0,25%
Answer:
See Explanation
Explanation:
Let the mass of salt be x
Let the mass of solution be 10 g
Percentage by mass of salt = 0,25%
So;
Percent concentration of salt = mass of salt/mass of solution * 100
0.25 = x/10 * 100
0.25 * 10/100 = x
x= 0.025 g of salt
Let the mass of water be y
Since mass of solution = mass of salt + mass of water
10 g = 0.025 g + y
y = 10 g - 0.025 g
y = 9.975 g
N2 + 3H2 3H2 -> 2NH3
A H = -92.2 kJ
During the above reaction, energy is -
A) absorbed
B) created
C) destroyed
D) released
Given that the enthalpy change ΔH for the reaction is negative, energy is released during the reaction (Option D)
Data obtained from the questionEquation: N₂ + 3H₂ —> 2NH₃Enthalpy change (ΔH) = –92.2 KNature of energy=?How to determine the nature of the energyFrom the data given above, we can see that the enthalpy change (ΔH) for the reaction is negative.
This simple means that heat energy is lost to the environment.
Therefore, we can conclude that the during the reaction, energy is released (Option D)
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there are 4 wavelengths that are emitted from a hydrogen atom that can be seen by the human eye. Two of the wavelengths are the same color. what color are they?
a) red, blue, and violet
b) orange, yellow, and green
C) red, orange, and yellow
D) blue, indigo, and violet
Answer:
The correct answer is - a) red, blue and violet.
Explanation:
In the visible spectrum, the hydrogen atom emits four different wavelengths that are visible to the human eye. The four wavelengths are these lines are 656 nm, 486 nm, 434 and 410 nm. Shorter wavelengths are not visible to human eyes fall in ultravoilet lights at less than 400 nm.
The H-α line is the red color wavelength at 656 nm, the blue color has two different wavelengths that are 486 nm sometimes called cyan, and 434 nm, and violet at 410 nm.
witch one is bigger 25yd or 75ft
Answer: in 25 yards there is 75 feet. Witch is the same to say that 25 yards is 75 feet.
Explanation:
Answer:
25yd is bigger
Explanation:
Explain the volume of ideal gasses as related to the molar concept.
Answer:
n = Initial volume/22.4L
Explanation:
The molar concept is simply one that is used to find the Number of moles and explain the relationship it has with avogadro's number, molecular mass, molar mass e.t.c.
Now, in terms of molar mass, number of moles is given by the formula;
n = mass of the sample/molar mass
In terms of avogadro's number, number of moles is;
1 mole = avogadro's number = 6.02 × 10^(23)
Now, when dealing with ideal gases, the molar volume of an ideal gas is 22.4 L.
Now the relationship between this volume and the mole concept is that the number of moles is gotten by dividing the initial volume by this molar volume.
Thus;
n = Initial volume/22.4L
If you want to make 8.00 moles of AlF₃ how many moles of F₂ will you need, using the following balanced chemical equation? 2 Al + 3 F₂ → 2 AlF₃
Answer:
You will need 12.0 moles of F₂
Explanation:
Based on the chemical equation, 2 moles of AlF₃ are produced when 3 moles of F₂ are added in an excess of Al.
Using this expression: 2mol AlF₃ = 3mol F₂ we can find the moles of F₂ as follows:
8.00 mol AlF₃ * (3mol F₂ / 2mol AlF₃) =
You will need 12.0 moles of F₂Silicon is a metalloid element commonly found in Earth's crust. It helps form many different compounds, which have a variety of different properties and applications.
One type of silicon-containing minerals is asbestos. Asbestos is resistant to heat and electricity, leading to its widespread use in manufacturing and the construction industry. Asbestos insulates buildings and makes them fire resistant. However, despite its usefulness, exposure to asbestos fibers or dust carries serious health risks that can cause respiratory disease or cancer.
Another silicon-containing compound is orthosilicic acid. Unlike asbestos, orthosilicic acid seems to benefit human health. This compound readily dissolves in water and is biologically stable enough to be used in the human body. Scientists have found evidence that orthosilicic acid plays an active role in the maintenance of strong bones.
The information above shows that silicon has both beneficial and detrimental effects on the human body. Given this information, think about other examples of materials or substances that can be both beneficial and detrimental at the same time. Research and write about two examples. Be sure to provide evidence to support your point of view.
Answer:
1. Zinc
Zinc also plays a vital role in our body because it is the main component of all cells and also provides protection against microbes. It is also needed for the production of DNA and protein. Zinc is good to take when you are feeling sick with a cold or even a sore throat. But Zinc in excess amount can cause copper deficiency, upset stomach aches, and diarrhea
2.Iron
Iron is a major component of hemoglobin which is responsible for the transportation of oxygen from the lungs to all cells of the body. Women take to iron a lot to give them energy after childbirth because they become iron deficient. Iron in excess can have a negative effect on our body such as it causes liver disease (cirrhosis, cancer), heart attack, diabetes and sometimes it causes death.
Explanation:
A new chemistry teacher arrives in her new room and discovers that the room was left in total chaos by her predecessor. While organizing the room, she finds a box on a shelf in the prep room labeled "Electrochemistry demonstration". The box contains some metal strips, and a solution in a bottle. The metal is labeled "Metal E" and the solution is labeled "1 M nitrate salt of E". In an attempt to organize the activity, she looks throughout the room for similar samples. She manages to find samples of metals and their nitrate solutions labeled A, B, C and D in addition to the original sample. In a file cabinet, she finds a paper labeled "Electrochemistry Activity" which lists five metals: zinc, aluminum, magnesium, silver and tin She is not able to find anything that identifies which metals correspond to which letters. She makes some quick observations, summarized below.
Answer:
D in addition to the original sample. In a file cabinet, she finds a paper labeled "Electrochemistry Activity" which lists five metals: zinc, aluminum, magnesium, silver and tin She is not able to find anything that identifies which metals correspond to which letters. She makes some quick observations, summarized below.
Explanation:
What is the electron configuration of a ground-state Nb2+ ion? Select one: a. 1s22s22p63s23p64s23d104p65s24d1 b. 1s22s22p63s23p64s23d104p64d3 c. 1s22s22p63s23p64s23d104p65s14d2 d. 1s22s22p63s23p64s23d104p64d5 e. 1s22s22p63s23p64s23d104p65s24d3
Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Therefore, the electronic configuration of Nb²⁺ is [Kr]4d³.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.
The systematic distribution of electrons in the various atomic orbitals is called its electronic configuration. The atomic number of Nb is 41. The electronic configuration of Nb is [Kr] 4d⁴ 5s¹. The electronic configuration of Nb²⁺ is [Kr]4d³. Nb²⁺ also has an odd number of valence electrons. The superscripts represents the number of electrons in each orbitals.
Therefore, the electronic configuration of Nb²⁺ is [Kr]4d³.
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If the temperature of a gas changes but the number of moles and volumes remain which is the values must also change ?
Answer:
As the pressure rises, the volume also rises. As the volume lower, the pressure lowers.
Describe how the calcium atom and the oxygen atom forms calcium oxide
You should give the charge on each ion formed
Answer:
Calcium atom has two valency electrons in its outermost energy level and these participate in bonding with the two of the six valency electrons in the outermost energy level of oxygen atom.
Calcium loses these two electrons and it gains a charge of +2 while Oxygen atom gains these two electrons and gains a charge of -2 hence gains stability
[tex]Ca {}^{2 + } \: \: and \: \: O {}^{2 - } [/tex]
As a result, Calcium oxide is formed due to ionic or electro valent bonding.
[tex]CaO[/tex]
Can the ratio of hydrogen to oxygen change if a solute is dissolved in the water
Answer:
Water molecules feature the combinations of hydrogen and oxygen atoms in a 2:1 ratio. Since they are present in a fixed ratio of mass, water molecules obey the law of constant proportions. Water is formed when two molecules of the diatomic hydrogen gas, combine with one molecule of the diatomic oxygen gas to produce two molecules of water
2. What volume of a 1.60 mol/L stock solution of calcium chloride would you use to make a 530 mL of a
0.34 mol/L solution? (2 marks)
Answer:
112.625 mL
Explanation:
Applying,
ML = M'L'.................... Equation 1
Where M = Initial molarity or concentration of calcium chloride, L = initial volume of calcium chloride, M' = Final molarity of calcuim chloride, L' = Final volume of calcuim chloride.
make L the subeject of the equation
L = M'L'/M................ Equation 2
From the question,
Given: M = 1.60 mol/L, M' = 0.34 mol/L, L' = 530 mL
Substitute these values into equation 2
L = (0.34×530)/1.60
L = 112.625 mL
solid iron with copper (II) sulfate. Assume the iron will form a +2 charge on the product side. Write the balanced equation for this reaction
Answer:
hey here is the answer to your question.
Explanation:
1) Write a balanced equation for the reaction occurring. (*Iron occurs in a few different oxidation states, but I will assume we're referring to Fe(II) or Fe2+)
Fe + CuSO4 -> Cu + FeSO4
2) Calculate the number of moles of each reactant.
Fe: 1.924 g * (1 mol / 55.85 g) = 0.03455 mol Fe
CuSO4: 0.1363 L * (0.0750 mol / 1 L) = 0.01022 mol CuSO4
3) Determine the limiting reactant. Because we have fewer moles of copper(II) sulfate and are reacting both reactants in a 1:1 ratio, we will run out of copper(II) sulfate first, making it the limiting reactant.
4) Convert moles of the limiting reactant to moles and grams of product of interest.
0.01022 CuSO4 (1 mol Cu / 1 mol CuSO4 ) (63.55 g Cu / 1 mol Cu) = 0.6495 g Cu
How do chemical bonds form between the atoms in a molecular compound
There are two types of chemical compound one is covalent compound and other is ionic compound. Therefore, ionic bond is formed by complete transfer of electron and covalent bond is formed by partial sharing of electron.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
An ionic compound is a metal and nonmetal combined compound. Ionic bonds are formed by complete transfer of electron from one element to another element. Covalent compound are formed by elements whose electronegativity difference is very low. Covalent bond is formed by sharing of electron.
Therefore, ionic bond is formed by complete transfer of electron and covalent bond is formed by partial sharing of electron.
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When agno3 was added to test tube d it reacted with cl to form agcl precipitate. Did this result in a shift to the right or the left
Answer:
Reaction will move rightwards.
Explanation:
Hello there!
In this case, according to the proposed question, it turns out possible for us to figure out the effect of the addition of silver nitrate, by using the following representative equation for the formation of the silver chloride precipitate:
[tex]Ag^+(aq)+Cl^-(aq)\rightleftharpoons AgCl(s)[/tex]
Now, due to the addition of silver nitrate, we will be actually adding silver ions to the solution, which means that, in terms of the Le Ch atelier's principle, the reaction will shift to the right towards the formation of more silver chloride precipitate.
Best regards!
Indique el valor de los números n,l,m y s para el último electrón de ₇N.(1 pt c/u) n = _____ l = _____ m = _____ s =_____
Answer:
n = 2
l = 1
m = 1
s = +1/2
Explanation:
₇N tiene la configuración electrónica;
1s2 2s2 2p3
Esto implica que este último electrón tiene los siguientes números cuánticos;
n = 2
l = 1
m = 1
s = +1/2
Este último electrón estará en un orbital de 2pz como lo muestran los números cuánticos enumerados anteriormente.
What is the number of grams of N2(g) that contains 9.02 x 10^23 molecules?
.....................................................................................
Copper metal is placed in a solution of silver nitrate. Write out the net ionic of the net equation for the reaction that occurs.
Answer:
[tex]Cu(s)+2Ag^+(aq)\rightarrow Cu^{2+}(aq)+2Ag(s)[/tex]
Explanation:
Hello there!
In this case, according to the given description of the reaction whereby copper metal reaction a solution of silver nitrate; it turns out possible for us to write out the resulting net ionic equation by firstly write the complete molecular equation:
[tex]Cu(s)+2AgNO_3(aq)\rightarrow Cu(NO_3)_2(aq)+2Ag(s)[/tex]
Now, we write the complete ionic equation, by taking into account that just the aqueous species are ionized:
[tex]Cu(s)+2Ag^+(aq)+2(NO_3)^-(aq)\rightarrow Cu^{2+}(aq)+2(NO_3)(aq)+2Ag(s)[/tex]
And finally, we cancel out the nitrate ions as the spectator ones in order to obtain:
[tex]Cu(s)+2Ag^+(aq)\rightarrow Cu^{2+}(aq)+2Ag(s)[/tex]
Regards!
Population doubles in ever decreasing time periods, especially since 1850. What is responsible for this trend?
The use of fossil fuels for electricity.
The larger the population the larger the increase.
Humans eliminated or controlled all their natural predators.
Answer: The larger the population the larger the increase.
Explanation:
After the agricultural explosion of the 18th and 19th centuries, the human population grew exponentially. The thing about exponential growth is that the larger the population that is increasing, the larger the increase.
As more children were born, these children gave birth to even more children which ensured that human population doubled in little time. For instance, two people give birth to 2 children who then give birth to 2 children each - we now have 8 people. Compare this to two people giving birth to 5 children who then give birth to 4 children each.
The latter became the norm after 1850 and is why the population kept growing faster.
Answer:
Its A^^
Explanation: