Answer:
1 moles Carbon Dioxide = 44.0095 gram using the molecular weight calculator and the molar mass of CO2
Explanation:
The molecules in 0.87 mole of carbon dioxide are 5.2 x 10²³.
What are moles?The mole is a SI unit of measurement that is used to calculate the quantity of any substance.
If there are 6.023 × 10²³ molecules present in one mole of carbon dioxide then for 0.87 moles
[tex]6.023 \times 10^2^3 \times 0.87 = 5.2 \times 10^2^3[/tex]
Thus, the molecules in 0.87 mole of carbon dioxide are 5.2 x 10²³
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how do I calculate the density
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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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:
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
how many moles are in 52 grams of o2
Answer:
1.625 moles
Explanation:
mole=mass/molar mass
mole= 52/25
7. List all of the variables that you controlled or kept the same.
Salt water
Answer:
Temperature is a common type of controlled variable. If a temperature is held constant during an experiment, it is controlled. Other examples of controlled variables could be an amount of light, using the same type of glassware, constant humidity, or duration of an experiment.
Explanation:
GIVE ME BRAINLIEST!!!!
nah im jk lol
ANYWAY HAVE A GREAT DAY!
Answer:
okie then you too
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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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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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
Help I got only 15 minutes left
Answer:
90g
Explanation:
I hope this helps plz give brainliest ! :D
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:
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:
Here is number 1 thank you again
Answer: i believe the answer is stayed the same
I hope u get this right
If air resistance is negligible, the sum total of potential and kinetic energies of a freely falling body _______
Answer:
Mechanical energy
Explanation:
Given that,
Potential energy of an object is given by :
P = mgh
The kinetic energy of an object is given by :
[tex]K=\dfrac{1}{2}mv^2[/tex]
Where
m is mass
h is height
v is velocity of the object
The sum of potential and kinetic energy is equal to total energy or the mechanical energy.
Hence, if air resistance is negligible, the sum total of potential and kinetic energies of a freely falling body is equal to mechanical energy.
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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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!
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.
What is one thing people can do to protect biodiversity?
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.
This symbol could be the dot diagram for which element listed below?
If you have 250mL of an 11M solution and add enough water to dilute it to 7 M, then what is the final volume of the solution?
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
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
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 F₂The reaction between solid aluminum and liquid bromine is exothermic. This reaction creates
the product aluminum bromide.
What equation includes the correct formulas and demonstrates conservation of mass?
A Al(s) + Br2(1) - AlBr3(s)
B Al(s) + Br(l) - AlBr(s)
C Al(s) + 3Br(1) - AlBr3(s)
D
2Al(s) + 3Br2(1) - 2AlBr3(s)
Answer:
correct answer is d)
Explanation:
This answer demonstrates law of conservation of mass because the mass of the products is equal to the mass of reactants with the help of the coefficients which is the process known as balancing. This answer also includes the correct formulas, as Br is a gas so it MUST be written as Br2. hope this helps:)
2Al(s) + 3Br2(1) - 2AlBr3(s) is the correct formulas and demonstrates conservation of mass.
What is Conservation of Mass?Every action has an equal and opposite response, states Newton's Third Law. This indicates that any force applied to an item will have an equal and opposite-directed response force of the same magnitude. A force pair is the collective name for these connected forces.
Each individual object will have a different force pair with each other object in systems of numerous objects where all things interact. In the case of charged particles, the charge of each object will dictate the direction of each force in the force pair.
Similar charges will cause particles to repel one another by directing their forces away from one another. With their forces pointing in the same direction, particles with opposing charges attract one another.
Therefore, 2Al(s) + 3Br2(1) - 2AlBr3(s) is the correct formulas and demonstrates conservation of mass.
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which has a lower freezing point oxygen or ethonal
Answer:
Ethanol
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
Which of the following are physical properties?
Radioactivity
Color
Temperature
Flammability
Texture
Reactivity
Answer:
Explanation:
The properties that are observed or measured without changing the composition of matter are called physical properties.
color, Temperature, Texture are the physical properties as the composition of matter remains the same.
On the other hand, Radioactivity, Flammability and Reactivity comes under chemical property as during the chemical reactions there might be some changes in the properties.
If 2 carbon atoms, underwent fusion. What element would you get?
Answer:
Two Helium atoms
If two carbon atoms underwent fusion (of 600 million kelvin) you would get two helium atoms.