Answer:
D 4P +3O₂ → 2 P₂O₃
Explanation:
In this problem, we need to convert the mass of phosphorus and oxygen to moles trying to find the ratio of reaction (The moles of P that reacts per mole of O₂):
Moles P:
12.4g P * (1mol P / 31g) = 0.4 moles
Moles O₂:
9.6g * (1mol / 32g) = 0.3 moles
The ratio of reaction is:
0.4 mol / 0.3 mol = 1.33 = 4 moles of P / 3 moles of O₂
That means 4 moles of P react with 3 moles of O₂ and the reaction that represents this ratio is:
D 4P +3O₂ → 2 P₂O₃The reaction of 12.4 g Phosphorous with 9.6 grams of Oxygen will be represented as [tex]\rm 4\;P\;+\;3\;O_2\;\rightarrow\;2\;P_2O_3[/tex]
In a chemical equation, the stoichiometric values are the moles of the molecules involved in the reaction. For the reaction of Phosphorous and oxygen, the moles of both elements are to be calculated.
Moles = [tex]\rm \frac{weight}{molecular\;weight}[/tex]
Moles of Phosphorous = [tex]\rm \frac{12.4}{31}[/tex]
Moles of Phosphorous = 0.4
Moles of oxygen = [tex]\rm \frac{9.6}{16}[/tex]
Moles of oxygen = 0.6
Moles of [tex]\rm O_2[/tex] = 0.3
The equation will be:
[tex]\rm 0.4\;P\;+\;0.3\;O_2\;\rightarrow\;2\;P_2O_3[/tex]
[tex]\rm 4\;P\;+\;3\;O_2\;\rightarrow\;2\;P_2O_3[/tex]
The correct reaction will be D.
For more information about the chemical equation, refer the link:
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What is the name of the warm phase associated with melting ice and higher sea level? PLSSSSSSS ILL GIVE 5 STARS PLSSS JUST PLS HELP ME ITS FOR MY MIDTERM REVIEW ;-; ITS DUE TODAY!!! PLSSS
Global Warming
Explanation:
The melting of the polar ice caps due to mostly negative human interactions with the environment.
What is the net force of the diagram?
why is the symbol Ar used in the electron configuration of potassium, and what does it represent?
Answer:
It represents the noble gas that precedes the period before Potassium.
Explanation:
Period before potassium is 3, the noble gas in that period is Ar (Argon). So when condensing the electron configuration of Potassium, Argon can account for 18 electrons instead of writing out 18 electrons in full form from 1s2, 2s2 etc.
If the current flowing from the supply is 0.12 A, what current will flow through 10 ohms resistor?
Worth 20 points and will mark brainliest!
If the resistor is in series to the voltage supply then 0.12A current will also flow through it.
(How the resistor is placed in relation to the supply is unknown)
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Question 2
2 pts
(02.03 MC)
John writes a definition for speed and time,
Speed: Speed is the distance an object moves in an amount of time
Time: The amount of time is measured in seconds, minutes, or hours
Which statement is correct about John's definitions? (2 points)
Both definitions are incorrect.
Both definitions are correct.
The definition for speed is correct, the definition for time is incorrect.
The definition for time is correct, the definition for speed is incorrect.
Answer:
yes
Explanation:
the definition for time is correct, the definition for speed is incorrect
What is the mass of .550 mL of alcohol (density = 82.0 g/mL)
Answer:
1.223 g/ml
Explanation:
Draw the Lewis structure for SO2. How
many single bonds, double bonds, triple
bonds, and unshared pairs of electrons are
on the central atom, in that order?
1. 3, 0, 0, 1
2. 2, 1, 0, 0
3. 4, 0, 0, 0
4. 1, 1, 0, 1
5. 0, 0, 1, 1
6. None of these
7. 0, 1, 1, 0
8. 2, 0, 0, 2
9. 0, 2, 0, 0
10. 1, 0, 1, 0
Answer:
It should be 9
Explanation:
That’s how I remember drawing them I took chemistry last year. Tell me if it’s good.
Which of the following is not an advantage of asexual reproduction?
A. Quick
B. only involves one parent
C. genetic sameness
D. genetic variation
Answer:
a
Explanation:
do all-stars mak energy through fusions
what is the correct name for the compound MgBr?
Answer:
Magnesium bromide
Explanation:
its just the answer give brianliest
How do secretions of apocrine glands differ from those of the eccrine sweat glands
PLEASE HELP DUE IN EXACTLY 15 mins!! i will give you branliest
[tex]2032533 \sq22222rt[2]{?} [/tex]
If a parent cell has 24 chromosomes , how many chromosomes will each daughter cell have? Then compare the chromosomes in the parent cell and the daughter cells.
Answer:
If a cell has 24 chromosomes before cell division then daughter cell resulting from mitotic division will have 24 chromosomes while daughter cell resulting from the meiotic division will contain 12 chromosomes each.
Explanation:
The speed of light is 300,000,000 m/s. What is the frequency of microwaves with a wavelength of 0.01 meter?
Answer:
30,000,000,000 Hz
Explanation:
I searched it up and got 3 x 10^10 and thats 30000000000
An acid that can donate only one hydrogen ion is called a _____ acid.
Answer:monoprotic
Explanation:
If 0.20 bushel is 1 dozen apples and a dozen apples has a mass of 2.0 kg, what is the mass of 0.50 bushel of apples?
Answer:
Mass of 0.50 bushel = 5 Kg
Explanation:
Given data:
Number of apples in 0.20 bushel = 1 dozen
Mass of 1 dozen apple = 2.0 Kg
Mass of 0.50 bushel apple = ?
Solution:
First of all we will calculate the number of dozen of apple in 0.50 bushel.
(1/0.20) ×0.50 = 2.5 dozen
Mass of 0.50 bushel = 2.5 dozen × 2.0 Kg/1 dozen
Mass of 0.50 bushel = 5 Kg
Tanisha is mixing powdered orange drink mix into a cup. She wants to make sure the orange taste is strong, so she adds a lot of powdered mix. As she is mixing, she notices that the powdered mix starts to float around in the water in clumps, and some settles on the bottom of the cup. Predict why this would happen.
A.
The powder is too old to dissolve in the water.
B.
No more powder will dissolve in the water.
C.
The powder needs to be shaken to fully dissolve.
D.
The powder does not fully dissolve because the water is too warm.
Answer:
B. No more powder will dissolve in the water.
Explanation:
If a lot of powder is added to the water, then a fully saturated solution would be created. This means that no matter how much more powder is added or how strong the mix is shaken, no more powder will disolve. The powder will instead remain in solid form in the solution.
Answer:
Heat up the water first because it increases solubility of the powdered mix.
Explanation:
Took the test on Edg. Hope this helps!! :)
You discovered a new compound with the following formula: H(O) Pe. Using the information below, what would be the correct name for this compound?
*H(O) is an Alkaline Earth Metal.
*Pe is classified as a Halogen.
Answer:
Home personide.
Explanation:
In relation of Magnesium and Chlorine, MgCl2 is called Magnesium chloride
which example is a weak base?
ethyl alcohol, ammonia, potassium hydroxide or vinegar?
Answer:
potassium
Explanation:
b/c electronegativitu
Test Yourself
1- Which is larger:
a) Million or billion?
b) A part of million or a part of billion?
2- Which is more harmful: concentration of a poisonous substance (lead) in
drinking water to be a part of a billion or a part of a million?
Answer:
billion is larger \ part if billion
The measure of the speed of the moving or
vibrating particles is called the
Answer:
Temperature
Explanation:
It's called temperature.
This is because, in any substance an increase in temperature means that the particles on the average will move with greater speeds, or that they have greater kinetic energy while a decrease in temperature means that the particles on the average will move with lesser speeds, or that they have lesser kinetic energy.
please help me ASAP PLEASE
What is the name for the compound formed between nitrogen and magnesium. (show your work)
Answer:
the compound formed between nitrogen and magnesium is Magnesium Nitride
What is the rise in sea level between 1930 and 2003?
A)
About 20cm
B)
About 16cm
C
About 12cm
Answer:
about 16
Explanation:
its 20 - ( approximately 5)
= approximately 16
Answer:
It should be (C) about 12cm
The chemical formula for the ionic compound aluminum sulfite is Al2(SO3)3. Explain why there are 2 cations for every 3 anions in this compound.
Please help lol
Answer: It is a 2:3 ratio because Al has a +2 charge and S and O both have a -2 charge. It takes 2 Al to bring 3 SO3 to a neutral state.
Explanation:
Observe Record the appearance (colors,
textures, etc.) of the reactants in the data table.
How many reactants are there?
DONE
Answer:
1
Explanation:
By observing the appearance (colors, textures, etc.) of the reactants in the data one reactant is there.
What is reactant?A reactant is a substance or can say a chemical compound that is present at the start of a chemical reaction. The substance(s) to the right of the arrow are called products.
For example we take a reaction-
O₂(g) + H₂(g) → H₂O(g)
Here, O₂ and H₂ are the reactants and H₂O is the product.
A reactant is present 100% initially and after sometimes it reduces gradually to form product according to chemical kinetics.
Given, the picture shown and the colour and texture of the reactant is shown.
Therefore, By observing the appearance (colors, textures, etc.) of the reactants in the data one reactant is there.
Learn more about chemical reactions, here:
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What is the atomic number of this element?
Answer:
7
Explanation:
ATOMIC NUMBER IS NUMBER OF PROTONS
PROTONS have positive charge
Answer:
7
Explanation:
sorry i accidentally put a 2 first
why is water considered a pure substance?
a. each water molecule is identical
b. water can be broken down by physical means
c. water molecules are made up of different types of atoms
d. water can be combined with other substances by physical means
heLp
Name and draw the lewis dot diagram for CuO
Answer:
lewis dot diagram for cuo is a bulletin dot above cu
Explanation:
Molecular Formula : CuO
name : Copper Oxide or cupric oxide
A student heats a 2.5 g sample of calcium carbonate in a test tube. What mass of calcium oxide remains in the test tube when the reaction is complete?
CaCO3(s) = CaO(s) + CO2(g)
Select one:
a. 1.4 g CaO
b. 2.1 g CaO
c. 2.5 g CaO
d. 1.0 g CaO
Answer:
1.4 g CaO
Explanation:
Given data:
Mass of calcium carbonate = 2.5 g
Mass of Cao remain in tube = ?
Solution:
Chemical equation:
CaCO₃ → CaO + CO₂
Number of moles of CaO:
Number of moles = mass/molar mass
Number of moles = 2.5 g/ 100 g/mol
Number of moles = 0.025 mol
now we will compare the moles of CaO with CaCO₃.
CaCO₃ : CaO
1 : 1
0.025 : 0.025
Mass of CaO:
Mass = number of moles × molar mass
Mass = 0.025 mol × 56 g/mol
Mass = 1.4 g
Answer:
1.4g CaO
Explanation:
Did the exam and got it right. Hope this helps