Answer:
154.44 Kg of H₂
Explanation:
We'll begin by converting 139 Kg of water to grams. This can be obtained as follow:
1 kg = 1000 g
Therefore,
139 kg = 139 kg × 1000 g / 1 Kg
139 Kg = 139000 g
Next, the balanced equation. This is illustrated below:
2H₂ + O₂ —> 2H₂O
Next, we shall determine the mass of H₂ that reacted and the mass of H₂O produced from the balanced equation. This can be obtained as follow:
Molar mass of H₂ = 2 × 1 = 2 g/mol
Mass of H₂ from the balanced equation = 2 × 2 = 4 g
Molar mass of H₂O = (2×1) + 16
= 2 + 16
= 18 g/mol
Mass of H₂O from the balanced equation = 2 × 18 = 36 g
SUMMARY
From the balanced equation above,
4 g of H₂ reacted to produce 36 g of H₂O.
Next, we shall determine the mass of H₂ needed to produce 139 kg (i.e 139000 g) of H₂O. This can be obtained as follow:
From the balanced equation above,
4 g of H₂ reacted to produce 36 g of H₂O.
Therefore Xg of H₂ will react to produce 139000 g of H₂O i.e
Xg of H₂ = (4 × 139000)/36
Xg of H₂ = 154444 g
Finally, we shall convert 154444 g to kg this can be obtained as follow:
1000 g = 1 Kg
Therefore,
154444 g = 154444 g × 1 Kg / 1000 g
154444 g = 154.44 Kg
Thus, 154.44 Kg of H₂ is needed to produce 139 Kg of water H₂O
due to the change in the number of electrons, the metal and nonmetal atoms both become _____
Decay chains exist because
Which of the following solutions would have [Fe3+] = 0.020 M?
A. 0.40L of 0.050 M Fe(NO3)3
B. 0.80 L of 0.020 M Fe2(SO4)3
C. 0.50 L of 0.040 M FeC6H4O
D. 0.50 L of 0.010 M Fe(C204)3
Answer:
None of the given options
Explanation:
Let's go case by case:
A. No matter the volume, the concentration of Fe(NO₃)₃ (and thus of [Fe³⁺] as well) is 0.050 M.
B. We can calculate the moles of Fe₂(SO₄)₃:
0.020 M * 0.80 L = 0.016 mol Fe₂(SO₄)₃Given that there are two Fe⁺³ moles per Fe₂(SO₄)₃ mol, in the solution we have 0.032 moles of Fe⁺³. With that information in mind we can calculate [Fe⁺³]:
0.032 mol Fe⁺³ / 0.80 L = 0.040 MC. Analog to case A., the molar concentration of Fe⁺³ is 0.040 M.
D. Similar to cases A and C., [Fe⁺³] = 0.010 M.
Thus none of the given options would have [Fe⁺³] = 0.020 M.
HELP
NOW
Balance this equation: C2H5OH(1)+O2(g)—> CO2(g)+H2O(g)
Answer:
C2H5OH +O2(g)_CO2(g)+H2O(g) (unbalanced)
C2H5OH +3O2(g)_2CO2(g)+3H2O(balanced)
PLZZZZZZZZ HELP How many moles of nitrogen gas are in a 10.0 L container at STP?
22.4 moles
10.0 moles
6.02×1023 moles
0.45 moles
Answer:
0.45 moles
Explanation:
1 mole of gas at s.t.p gives 22.4dm3 when converted to litre it will be 22.4l/ x mole of N2 will give 10.0l the answer is equal to 0.45mole
Fe2O3 + CO → Fe + CO2 If 2 moles of Fe2O3 react with 9 moles of CO, how many moles of each product are formed?
Answer: B. 4 moles Fe and 3 moles CO2
Explanation:
write a balanced chemical reaction
that is FeO3 + 3 CO → 2 Fe + 3CO2
2 moles of Fe2O3 reacted with 3 x2=6 moles of Co to form Fe and CO2 therefore CO was in excess and Fe2O3 was limiting reagent.
use the mole ratio to determine the moles of each product.
that is the mole ratio 0f Fe2O3 : Fe is 1:2 therefore the moles of Fe = 2x2=4 moles
the mole ratio of Fe2CO3 : CO2 is 1: 3 therefore the moles of Co2 = 2 x3 = 6 moles
If 2 moles of Fe2O3 react with 9 moles of CO, moles of each product is formed will be 6 moles.
What is a mole?A standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, etc, is referred to as mole.
According to the given scenario, the first one should create a chemical reaction that is balanced
FeO3 + 3 CO 2 Fe + 3CO2 is the formula.
Because 2 moles of Fe2O3 reacted with 3 x2=6 moles of Co to produce Fe and CO2, CO was in excess and Fe2O3 was the limiting reagent.
To calculate the moles of each product, use the mole ratio.
That is the Fe2O3 mole ratio: Because Fe is a 1:2 element, the mole of Fe is 2x2=4 moles.
Because the mole ratio of Fe2CO3 to CO2 is 1:3, the moles of Co2 are 2 x 3 = 6 moles.
Thus, If 2 moles of Fe2O3 react with 9 moles of CO, moles of each product is formed will be 6 moles.
For more details regarding moles, visit:
https://brainly.com/question/26416088
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How many total moles of ions are released when 0.0341 moles of Na2HPO4 dissolves completely in water
Answer:
0.1023 moles
Explanation:
We have this reaction
Na2HPO4 → 2Na+ + NPO4-
1 mole gives us 3 ions
Na+ has 2 ions to it
NPO4 has 1 ion
2 + 1 = 3
We multiply 3 with the number of moles to get the answer to this question
3 x 0.0341
= 0.1023 moles
So we conclude that total moles released when dissolved in water is equal to 0.1023
How many grams of 02 will be formed from 6.5 moles of KCLO3
Answer:
312 g of O₂
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
2KClO₃ —> 2KCl + 3O₂
From the balanced equation above,
2 mole of KClO₃ decomposed to 3 moles of O₂.
Next, we shall determine the number of mole of O₂ produced by the reaction of 6.5 moles of KClO₃. This can be obtained as follow:
From the balanced equation above,
2 mole of KClO₃ decomposed to 3 moles of O₂.
Therefore, 6.5 moles of KClO₃ will decompose to produce = (6.5 × 3)/2 = 9.75 moles of O₂.
Finally, we shall determine the mass of 9.75 moles of O₂. This can be obtained as follow:
Mole of O₂ = 9.75 moles
Molar mass of O₂ = 2 × 16 = 32 g/mol
Mass of O₂ =?
Mole = mass / Molar mass
9.75 = Mass of O₂ / 32
Cross multiply
Mass of O₂ = 9.75 × 32
Mass of O₂ = 312 g
Thus, 312 g of O₂ were obtained from the reaction.
Answer:
3.1 × 10² g
Explanation:
Step 1: Write the balanced decomposition reaction
KClO₃ ⇒ KCl + 1.5 O₂
Step 2: Calculate the moles of O₂ formed from 6.5 moles of KClO₃
The molar ratio of KClO₃ to O₂ is 1:1.5.
6.5 mol KClO₃ × 1.5 mol O₂/1 mol KClO₃ = 9.8 mol O₂
Step 3: Calculate the mass corresponding to 9.8 moles of O₂
The molar mass of O₂ is 32.00 g/mol.
9.8 mol × 32.00 g/mol = 3.1 × 10² g
Many factors would bring advantages when using fuel cells in cars but which factors present a drawback?
Answer:
B. hydrogen storage
Explanation:
Answer: B hydrogen storage
Explanation:
correct on edge 2020
Help me please TwT. I really need it TwT
Answer:
The air moves to the low pressure system creating wind.
Hope this helps! :)
What container appeared to have the least volume of liquid despite all three holding the same volume
Answer:
Beaker
Explanation:
The correct answer is Beaker
In a reaction of iron and oxygen to produce iron (III) oxide, 12.5 grams of iron was consumed. The limiting reagent is ____ (compound) if 5.2 grams of oxygen was present. The theoretical yield (amount that is produced) is ____ (mass to the second decimal)
Blank 1:
Blank2:
Answer:
The limiting reagent is O₂ if 5.2 grams of oxygen was present. The theoretical yield is 17.25g of Fe₂O₃
Explanation:
The reaction is:
4Fe + 3O₂ → 2Fe₂O₃
We convert the mass of each reactant to moles:
12.5 g . 1mol / 55.85g = 0.224 moles of Fe
5.2g . 1 mol/ 32g = 0.1625 moles of oxygen.
We analyse the stoichiometry.
4 moles of Fe react to 3 moles of O₂
Then 0.224 moles of Fe will react to (0.224 . 3)/4 = 0.1678 moles of O₂
I need 0.1678 moles of O₂ and I only have 0.1625. Oxygen is the limiting reactant.
Now we go to the products:
3 moles of O₂ can produce 2 moles of Iron (III) oxyde
Then, 0.1625 moles of O₂ may produce (0.1625 . 2)/3 = 0.108 moles of Fe₂O₃
We convert the moles to mass:
0.108 mol . 159.7g /1mol = 17.25 g
Which element would have similar properties to Sulfur? Chlorine O a ob Fluorine Oxygen Nitrogen
Answer:
sir/ma'am, i know i'm a NOOB at this kind of stuff but i believe it's oxygen.
Explanation:
i can't really remember the answer since it's been a week or so that i done this problem, it's between nitrogen and oxygen, though, i believe it's oxygen.
if ya don't believe me or trust me, then here's the link to help ya:
https://socratic.org/questions/what-elements-would-have-similar-properties-to-sulfur#628367
helpppp nowwww plsss!!
Answer:
A
Explanation:
if the earth slows down then that will give more time to the sun meaning days/nights will be longer
C + O2 = CO2
If 12g of C reacts with 40g of O2, How much CO2 will be formed? State the law which governs your answer. (5 Mark)
PLEASE ANSWER FAST
Answer:
44 grams of CO₂ will be formed.
Explanation:
The balanced reaction is:
C + O₂ → CO₂
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:
C: 1 moleO₂: 1 moleCO₂: 1 moleBeing the molar mass of each compound:
C: 12 g/moleO₂: 32 g/moleCO₂: 44 g/moleBy stoichiometry the following mass quantities participate in the reaction:
C: 1 mole* 12 g/mole= 12 gO₂: 1 mole* 32 g/mole= 32 gCO₂: 1 mole* 44 g/mole= 44 gThe limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.
If 12 grams of C react, by stoichiometry 32 grams of O₂ react. But you have 40 grams of O₂. Since more mass of O₂ is available than is necessary to react with 12 grams of C, carbon C is the limiting reagent.
Then by stoichiometry of the reaction, you can see that 12 grams of C form 44 grams of CO₂.
44 grams of CO₂ will be formed.
what is an animal that eats producers called?
Answer:
A consumer
Explanation:
Answer:
primary consumers
Explanation:
how many atoms are in 2.00 moles of Helium
Answer:
maybe try 4.002602, good luck
Measurements show that unknown compound has the following composition: element mass 62.1 % carbon, 10.5 % hydrogen and 27.6 % oxygen. Write the empirical chemical formula of this compound?
Answer:
C3H6O
Explanation:
The percentage composition of the elements in the compound are given as follows:
62.1 % carbon = 62.1g of C
10.5 % hydrogen = 10.5g of H
27.6 % oxygen = 27.6g of O
Next, we convert each mass to mole by dividing by their molar/atomic mass
C = 62.1/12 = 5.175mol
H = 10.5/1 = 10.5mol
O = 27.6/16 = 1.725mol
Next, we divide each mole value by the smallest mole value (1.725)
C = 5.175mol ÷ 1.725 = 3
H = 10.5mol ÷ 1.725 = 6.086
O = 1.725mol ÷ 1.725 = 1
The empirical ratio approximately of C:H:O is 3:6:1, hence, the empirical formula is C3H6O
WILL GIVE BRAINLIEST!!!!
Any type or form of energy can change into any other type of energy. This is referred to as _____.
A. energy transformations
B. law of conservation of mass
C. law of conservation of energy
D. mechanical energy
Answer:
C
Explanation:
The Law of Conservation of energy is that energy can be transformed from one form to another, but can be neither created or destroyed.
Please hurry I'm in a test... 50 pts :)) HIGH SCHOOL CHEMISTRY
Reactant P contains 50 J of energy, and reactant Q contains 35.3 J of energy. The reactants combine to form product PQ, which contains 104 J of energy. What is the energy transformation?
Energy is absorbed because the product has more energy than the reactants have.
Energy is absorbed because the product has less energy than the reactants have.
Energy is lost because the product has more energy than the reactants have.
Energy is lost because the product has less energy than the reactants have.
Answer:
A. Energy is absorbed because the product has more energy than the reactants have.
Here the energy of both reactants is combined together and not released.
Use stoichiometry to determine how many moles of O2 are needed
to completely react with 2.25 moles of C3H8. Please show your work
Answer:
11.25 moles of O₂.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
C₃H₈ + 5O₂ —> 3CO₂ + 4H₂O
From the balanced equation above,
1 mole of C₃H₈ reacted with 5 moles of O₂.
Finally, we shall determine the number of mole of O₂ needed to react with 2.25 moles of C₃H₈. This can be obtained as follow:
From the balanced equation above,
1 mole of C₃H₈ reacted with 5 moles of O₂.
Therefore, 2.25 moles of C₃H₈ will react with = 2.25 × 5 = 11.25 moles of O₂.
Thus, 11.25 moles of O₂ is needed for the reaction.
Thermal Energy Transfer Lab Edge
2021
help
please
Explanation:
same✊ raaaate meee please
Describe how to calculate the Rf value for a spot on a TLC plate.
Answer:
In thin-layer chromatography, the retention factor (Rf) is used to compare and help identify compounds. The Rf value of a compound is equal to the distance traveled by the compound divided by the distance traveled by the solvent front (both measured from the origin).
can someone please help me!
Answer:
Explanation:
C defo
7. What is the maximum amount of NaCl that can be
dissolved (in 100g of water) at 90°C?
Answer:
Maximum amount of NaCl that can be Dissolved in 100g of water at 90'C
Explanation:
In fact, you can expect to be able to dissolve no more than 40 g of sodium chloride per 100 g of water at 80∘C . So, at 80∘C , you will have an unsaturated solution if you dissolve less than 40 g of sodium chloride, and a saturated solution if you dissolve about 40 g of sodium chloride
Answer:
The maximum amount of NaCl that can be Dissolved in 100g of water at 90'C
Explanation:
In fact, you can expect to be able to dissolve no more than 40 g of sodium chloride per 100 g of water at 80∘C . So, at 80∘C, you will have an unsaturated solution if you dissolve less than 40 g of sodium chloride, and a saturated solution if you dissolve about 40 g of sodium chloride.
5. Which diagram represents the alignment of the Earth, Moon and Sun during a spring
tide?
Answer:
the second one
Explanation:
I believe its thhe second one because isnt it when the earth is closest to the sun its winter.
i know its seems weird but that's what I learned
There are reasons for alignment. The second diagram represents the alignment of the Earth, Moon and Sun during a spring tide.
What is the alignment of the Earth moon and sun during a spring tide?Spring tides is known to often take place when the Earth, the Sun, and the Moon are said to be in one line.
This brings about a rise in the gravitational pull on the oceans. Few times, the Sun and Moon are known to be opposite sides of the Earth.
When you see the second diagram, you will see that they are on the same side and line.
Learn more about alignment of the Earth moon from
https://brainly.com/question/17255020
Please help!! Also please provide an explanation
Answer:
Chlorine
Explanation:
chlorine is the element that shows similar chemical properties as bromine because this element is in the same group in the periodic table show similar properties they belong to 17th group.
What are the two cell division stages in the mitotic phase of the cell cycle?
Please help!!! Is the following example of synthesis? 2H2 + O2 —> 2H2O
Answer:
hahahaa i can get the points
Explanation:
yes it is again LOL thanks
Account for the difference in the shape and color of the potential maps for ammonia and the ammonium ion.
Answer:
Explained below.
Explanation:
The difference between the two of them will be considered from their electrostatic potential maps.
First of all the major difference is that ammonia molecule(NH3) has a lone lone pair of electron on the N atom.
Due to the this lone pair of electron on the N - atom of ammonia, it's bond angle will be slightly lesser than that of ammonium ion.
Therefore, In the electrostatic potential map of NH3, the charge distribution will not be symmetrical for the fact that there is electron rich N atom and so the N atom will be more red than the 3 hydrogen atoms (H atoms).
Whereas, the electrostatic potential map of NH4+ (ammonium ion) will be symmetrical due to the even/symmetrical distribution of all the 4 hydrogen atoms surrounding the central Nitrogen atom.
Also, the Nitrogen atom here in ammonium ion will have a lower electron density than the Nitrogen atom that's present in ammonia molecule due to the bonding existing between the lone pair electron and the Hydrogen atom