Ok we trying this again. so just in case if the picture isnt showing, here are the questions:
1. Given the unbalanced equation:
C12H22O11 = C + H2O
If you produced 34.55 moles of C, how many moles of water were produced as well?
2. Given the unbalanced equation:
Cr + H2SO4 = CrSO4 + H2
If you want to make 14.81 moles of CrSO4, how many moles of Cr do you need?
Answers
Answer:
1. 31.68 moles of water, H₂O
2. 14.81 moles of Cr
Explanation:
1. Determination of the number of mole of water, H₂O.
The balanced equation for the reaction is given below:
C₁₂H₂₂O₁₁ —> 12C + 11H₂O
From the balanced equation above,
1 mole of C₁₂H₂₂O₁₁ produced 12 moles of C and 11 moles of H₂O.
Next, we shall determine the number of mole C₁₂H₂₂O₁₁ needed to produce 34.55 moles of C. This can be obtained as follow:
From the balanced equation above,
1 mole of C₁₂H₂₂O₁₁ produced 12 moles of C.
Therefore, Xmol of C₁₂H₂₂O₁₁ will produce 34.55 moles of C i.e
Xmol of C₁₂H₂₂O₁₁ = 34.55 / 12
Xmol of C₁₂H₂₂O₁₁ = 2.88 moles
Thus, 2.88 moles of C₁₂H₂₂O₁₁ is needed.
Finally, we shall determine the number of mole of water, H₂O produced from the reaction. This can be obtained as follow:
From the balanced equation above,
1 mole of C₁₂H₂₂O₁₁ produced 11 moles of H₂O.
Therefore, 2.88 moles of C₁₂H₂₂O₁₁ will produce = 2.88 × 11 = 31.68 moles of H₂O.
Thus, 31.68 moles of water, H₂O were obtained from the reaction.
2. Determination of the number of mole of Cr needed.
The balanced equation for the reaction is given below:
Cr + H₂SO₄ —> CrSO₄ + H₂
From the balanced equation above,
1 mole of Cr reacted to produce 1 mole of CrSO₄.
Finally, we shall determine the number of mole of Cr needed to produce 14.81 moles of CrSO₄. This can be obtained as follow:
From the balanced equation above,
1 mole of Cr reacted to produce 1 mole of CrSO₄.
Therefore, 14.81 moles of Cr will also react to produce 14.81 moles of CrSO₄.
Thus, 14.81 moles of Cr is needed for the reaction.
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Explanation:
Answer:
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Answer:
C. Its Value Does Not Depend On Which Reactions Are Added
Explanation:
I Just took the test
The true statement of the enthalpy of a reaction is its value does not depend on which reaction is added. The correct option is C.
What is enthalpy?
Enthalpy is a term of thermodynamics. It is the total internal energy and product of the pressure and volume of a system. It can not be calculated, but can be changed.
Thus, the correct option is C, its value does not depend on which reaction is added.
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A wooden plank has a mass of 100kg force of 20 n was used to move it what is its acceleration
Answers
Answer:
a= 0.2m/s²
Explanation:
Fnet = ma
20 = 100a (divide both sides by 100)
a = 0.2m/s²
A wooden plank has a mass of 100 kg force of 20 Nwllhave the acceleration of 0.2 m/s².
What is Acceleration ?Acceleration is the rate of change of the velocity of an object with respect to time.
Accelerations are vector quantities.
The orientation of an object's acceleration is given by the orientation of the net force acting on that object.
We know,
F= ma ,
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Therefore, A wooden plank has a mass of 100 kg force of 20 Nwllhave the acceleration of 0.2 m/s².
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Rust forming on a piece of iron is an example of which of the following? *
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Calculate the following:)
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Answer:
I think it's 1.55 x 10^40
Explanation:
i hope dis helps<3
3. An energy pyramid is shown.
Red-
The energy lost at each level is consumed by organisms in
the top level.
tailed hawks
Mexican free-tailed bats
Energy is transferred from organisms in one level to those
in the level above.
Water boatmen
Energy is transferred down each level of the energy
pyramid
Algae
Which sentence best describes how energy flows through this pyramid?
The organisms at the bottom level provide energy directly
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Answer: it’s c
Explanation:
Do elements in the same group have same principle number?
Answers
The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups. The elements in each group have the same number of valence electrons. As a result, elements in the same group often display similar properties and reactivity.
Answer:
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Explanation:
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Aluminum, silicon, sulfur, & chlorine, , ,
Carbon, selenium, iodine, & radon
Oxygen, germanium, indium & mercury
Nitrogen, arsenic, antimony & bismuth
Answers
Nitrogen, arsenic, antimony & bismuth
Explanation:
Phosphorus belongs to the 15th group, that is nitrogen family.
Natures are decided by the number of valence electrons.
In a family, all elements have same outer electronic configuration or you say number of electrons.
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Answer:
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Explanation:
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Answer:
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https://screenshot.best/A7QIKV.lnk
Explanation:
If using a microscope allows you to see substances in a mixture, that mixture is _____
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Answer:
That means that mixture is HeteroGeneous.
Explanation:
Hope this Helps!
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Answer:
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Explanation:
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Where is most of an atom's atomic mass?
Answers
Answer:
The nucleus contains the majority of an atom's mass because protons and neutrons are much heavier than electrons, whereas electrons occupy almost all of an atom's volume. The diameter of an atom is on the order of 10−10 m, whereas the diameter of the nucleus is roughly 10−15 m—about 100,000 times smaller.
Explanation:
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Explanation:
4NO + 3O2 + 2H2O = 2.4 moles of NO 2.4 moles of O2 and 2.4 moles of H2O react and 2.0 moles of HNO3 are recovered from the reaction. what is the percent yield of this reaction ?
Answers
Answer:
83%
Explanation:
Percent yield is 100 times the ratio between actual yield (2.0moles HNO₃) and theoretical yield. To find theoretical yield:
As you can see in the reaction:
4NO + 3O₂ + 2H₂O → 4HNO₃
4 moles of NO are required when 3 moles of O₂ and 2 moles of H₂O reacts. As equal moles of each reactant are added, the limiting reactant is NO because is the substance that requires more moles to react.
2.4 mol NO produce 2.4 mol HNO₃-Because 4 moles of NO produce 4 moles of HNO₃. That means theoretical yield is 2.4 moles and percent yield is:
2.0 moles / 2.4 moles * 100 = 83%
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Answer:
The answer is Conduction.
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Web
D
O A D
B. A
C. B
В
D C
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Answer:
C. B
Explanation:
The correct plate is showing n the green color that is of South America and is a major tectonic plate. The plate belongs to the south American continent and forms the southernmost part of the mid-Atlantic ridge. According to the plate movement, it's still moving to the west away from the Atlantic ridges due to the seafloor spreading. Has The plate has an approx area of 43,600,000 km square.what does the J.J.Thomson model represent?
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Answer:
J.J. Thomsons model represents the structure of an atom.
J.J. Thomson's experiments with cathode-ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged particles.
Instructions:
Balance chemical equations on bach side by multiplying the molecular or ionic compounds by a
coefficient.
_C3_H8
+
O2
CO2
H2O
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Answer: the answer is b
Explanation:
Answer:
Explanation:
B answer
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Explanation:
Answer:
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Explanation:
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Answer:
4:10
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6:10
b:c
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The lcm of 3 and 6 is 6.
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a:b:c
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hence a:c = 4:10
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Answer:
Shape and volume
hope this helps
have a good day :)
Explanation:
which of the following acts as a catalyst in catalytic converters?
A. Wood
B. Metal
C. Water
D. Gas
Answers
Answer:
B. Metal
Explanation:
The catalyst used in the converter is mostly a precious metal such as platinum, palladium and rhodium. Platinum is used as a reduction catalyst and as an oxidation catalyst. Although platinum is a very active catalyst and widely used, it is very expensive and not suitable for all applications.
Hope it helps plz mark brainlist :)
Match the words and the definitions (15 points for you, please answer quickly <3)
Question 1 options:
Umbra
Eclipse
Penumbra
Corona
1.
The outer, larger, lighter shadow
2.
During a solar eclipse, the moon covers the sun, a small ring of fire is visible around the edge
3.
to vanish
4.
the inner, darkest, cone-shaped shadow is
Answers
Umbra is cone shaped, darkest, inner shadow, eclipse means to vanish, when moon covers sun during solar eclipse, ring of fire visible is called as corona, and larger, lighter shadow of outside is called penumbra. Thus, 1. D, 2. C. 3. B, 4. A are correct.
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The ring of light visible around edges, during solar eclipse, it is called as corona. Therefore, option 1. D, 2. C. 3. B, 4. A are correct.
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definition of diameter?
Answers
Answer:
a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.
Explanation:
a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.
i need this answer today help pls
Answers
Answer:
A. 28 days
Explanation:
Answer:
about 29.53 days
So, 28 days.
Explanation:
If you want the exact, It takes 27 days, 7 hours, and 43 minutes. Yes, i was bored so i calculated it. I'm good with astrology.
How has the atom changed since Rutherford’s Early Atomic Model?
Answers
Answer:
the atom has changed in many ways, we have found sizes, masses, electrons, neutrons, and more.
Explanation:
which of the following acts as a catalyst in catalytic converters?
A. Wood
B. Metal
C. Water
D. Gas
Answers
Answer: B. Metal
Explanation: The catalyst used in the converter is mostly a precious metal such as platinum, palladium and rhodium Hope This Helped (=^･-･^=)
How many moles of O2will be produced from 6.2 moles of water?
Answers
Answer:
I hope This will help you....and please mark me as Brilliant
Explanation:
The formula, H2O tels us that there are the same number of moles of Oxygen as there are of water. The (understood )molecular coefficient of H2O is 1. The (understood ) coefficient of O in the formula is also 1. The number of moles of oxygen is the same as the number of moles of water. This is moles of oxygen atoms. If the question wants moles of oxygen gas, O2, then it will be half as many I think that is what they want, so I would answer 3.1 moles of O2.
Calculate the energy of interaction between a lithium ion and a magnesium ion at a distance of 4.55x10^-10 m