Answers
Answer:
The answer to part c is the amount of moles of FeBr₃ that will be formed is approximately 0.179 moles
Explanation:
The given chemical reaction is 2Fe + Br₂ → 2FeBr₃
The mass of iron, Fe, in the reaction = 10 g
a) The amount of moles of iron that reacted = The mass of iron in the reaction/(The molar mass of iron)
The atomic mass of iron = 56 amu
Therefore, one mole of iron = 56 grams
The amount of moles of iron that reacted = 10/(56) ≈ 0.179
The amount of moles of iron that reacted ≈ 0.179 moles
b) The amount of moles of bromine that reacted = 3/2 × The amount of moles of iron that reacted
∴ The amount of moles of bromine that reacted = 3/2 × 0.179 ≈ 0.2685
The amount of moles of bromine that reacted ≈ 0.2685 moles
c) The amount of moles of FeBr₃ that will be formed = The amount of moles of iron in the reaction ≈ 0.179 moles
d) The mass of one molecule of FeBr₃ = Mass of 1 atom of iron, Fe + 3 × The mass of 1 atom of bromine, Br
∴ The mass of one mole of FeBr₃ = 56 + 3 × 80 = 296
The mass of one mole of FeBr₃ = The molar mass of FeBr₃ = 296 grams
The mass of FeBr₃ formed = The molar mass of FeBr₃ × The number of moles of FeBr₃ formed
∴ The mass of FeBr₃ formed = 296 × 0.179 ≈ 52.984
The mass of FeBr₃ formed ≈ 52.984 grams
Related Questions
The size of an atom would be described in _______.
Answers
Answer:
atomic radius
Explanation:
so radius
Answer:
Explanation:
The average size of an atom is about 100 picometers or one ten-billionth of a meter. Almost all of the mass of an atom is in its nucleus; almost all of the volume of an atom is occupied by electrons. The number of protons (also known as its atomic number) determines the element. Varying the number of neutrons results in isotopes.
Mu Cephei is no longer considered a main sequnce star. This means it has run out of:
A:hydrogen
B:Helium
C:Oxygen
D:Iron
Answers
Answer:
A: Hydrogen
Explanation:
Plz give me brainliest it really helps!
1. In which area are you most likely to find plants that can tolerate water that has a constantly
changing salt content?
A. a freshwater stream
B. an estuary
C. a a pond
D. a coral reef
Answers
Answer:
I would think B, an estuary. But I'm not sure.
Explanation:
The area where the plants should be find in which the water should be tolerated should be estuary.
What is an estuary?An estuary refer to the enclosed body with respect to the brackish water that have one or more rivers or streams that should be flow into it. Also, there should be free connection to the open sea. It should be considered as the transition zone that lies between the river environment and maritime environment
Therefore, we can conclude that the option b is correct.
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which type of stress causes rocks to fold?
A.) compression
B.) shearing
C.) strike-slip-
D.) tension
Answers
Answer:
A. compression
Explanation:
the rock is unable to move causing it to stress
Answer: a. Compression
Please help......A 0.01 g bullet travels with a velocity of 1500 m/s. What is its momentum?
Answers
Answer:
hope this helps you
Explanation:
Example 1: A 20 kg object has a velocity of 4.5 m/s in the positive x direction. ... What is the momentum of a 3000 kg truck traveling at 25 m/s? 2. A 1500 kg ferryboat has a momentum of 25000 kg∙m/s. ... *A 0.01 kg bullet has a speed of 700 m/s before it strikes a 0.95 kg wooden block ... We will be going outside so please.
A coffee cup calorimeter contains 153.21 g of water at 22.50 °C. A 65.454 g piece of iron is heated to 101.62 °C. The piece of iron is added to the coffee cup caloriemter and the contents reach thermal equilibrium at 25.68 °C. The specific heat capacity of iron is 0.449 Jg·K and the specific heat capacity of water is 4.184 Jg·K. How much heat, , is lost by the piece of iron?
Answers
Answer:
Q = 2232J
Explanation:
In the system, the energy that is lost by the iron is:
Q = S*ΔT*m
Where Q is heat, S is specific heat of iron ΔT is change in temperature and m is mass of the piece of iron.
S = 0.449J/gK
ΔT = 101.62°C - 25.68°C = 75.94°C
m = 65.454g
Q = 0.449J/gK*75.94°C*65.454g
Q = 2232J
what describes a property of all elements
Answers
what is the mass of 1.25 mol of zinc
Answers
Answer:
1 mole is equal to 1 moles Zinc, or 65.38 grams.
Explanation:
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What do the cells do with the things they absorb
Answers
Answer:
Use them as nutrients probably
Sodium atom with electronic configuration 2,8,1 achieves stable electronic configuration by losing one electron thereby achieving stable electronic configuration of the nearest Noble gas
(argon/ neon/ helium).
Answers
Which is a compound?
A. Orange and black shirts in a drawer
B. An alloy of copper and iron
C. Silicon and carbon in a molecule
D. A copper statue
please help, on a pex ! brainliest and an extra 50 points if right
Answers
Explanation:
c Silicon and carbon in a molecule
The bond between sodium and chlorine in the compound sodium chloride (NaCl) is a/an:
Answers
Ples help is it Fission, Fusion, or Both 1. Incredibly high amounts of energy are released. ____ 2. Results in a nuclear change. ______ 3. The end product is heavier. _____ 4. Two nuclei become one. ____ 5. The end product is lighter. ____
Answers
Answer:
1. fission
2. both
3. fusion
4. fusion
5. fission
Explanation:
Fission refers to the splitting of a single nucleus into two or more small nuclei while fusion refers to the combination of two or more small nuclei into one heavy nucleus.
When a single heavy nucleus splits, energy is released and the end products are 2 or more lighter nuclei. On the other hand, when several light nuclei fuse into one nucleus, energy is absorbed and the end product is one heavy nucleus. Both fission and fusion result in a nuclear change.
In sexual reproduction, a genetic mutation can ONLY be passed down to the offspring if it occurs in the sex cells.
True
False
Answers
Please help me label this.
Answers
Answer:
+ - protons
the green one- nutrons
black ones- electron
the rings are the energy level
The middle layer is the nucules
Which of these elements is the most chemically reactive?
A.
strontium (Sr)
B.
beryllium (Be)
C.
radium (Ra)
D.
calcium (Ca)
Answers
The most chemically reactive element among the listed elements is Radium (Ra). The correct option is C. radium (Ra)
The elements listed are alkaline earth metals, that is, they belong to group 2 of the period table.
The reactivity of alkaline earth metals increases down the group. That is, the reactivity increases with increase in atomic mass.
Among the listed element, radium (Ra) has the greatest atomic mass and it is the last element as we go down the group.
Hence, the most chemically reactive element among the listed elements is Radium (Ra). The correct option is C. radium (Ra)
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What is the amplitude ?
Answers
Answer: The amplitude is a measure of the strength or intensity of the wave
Explanation: when looking at a sound wave, the amplitude will measure the loudness of the sound.
aluminum hydroxide + sodium nitrate reaction type
Answers
Answer:
.
Explanation:
how does eating contribute to the flow of energy in a ecosystem
Answers
Answer:
Eating contributes to the flow of an ecosystem because in a food web/chain, there is always a consumer. Starting from the very bottom of the food web/chain, all organisms eat to pass on the energy to the next cosumer. For example, a grasshopper eats some grass. That grass is made into energy. Then, a possum eats that grasshopper, the energy from the grasshopper converting to the energy of the possum. Then a giant snake comes along and eats the possum. The energy keeps flowing up and up the food chain as animals consume(and be consumed).
-Carbon bonds in food are broken, which releases energy.
-Weathering breaks down rocks into chemicals like sulfur and nitrogen. -Consumers make food using light energy from the sun.
-Energy is absorbed as heat when plants make food
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Mars
What is the orbit of the Mars?
Is the Sun at the center of the Mars’s orbit?
Describe the motion of Mars throughout its orbit? Does it move at constant speed?
Answers
Answer:
Mars has an orbit with a semimajor axis of 1.524 astronomical units (228 million km), and an eccentricity of 0.0934 The planet orbits the Sun in 687 days and travels 9.55 AU in doing so making the average orbital speed 24 km/s.
The eccentricity is greater than that of every other planet except Mercury, and this causes a large difference between the aphelion and perihelion distances—they are 1.6660 and 1.3814 AU
Explanation:
Answer: i hope this helps :)
-- 687 days
-- After years of analysis, Kepler discovered that Mars's orbit was likely to be an ellipse, with the Sun at one of the ellipse's focal points. This, in turn, led to Kepler's discovery that all planets orbit the Sun in elliptical orbits, with the Sun at one of the two focal points.
-- From our point of view as we race around the Sun, Mars is falling behind; consequently, we see Mars moving in a retrograde direction from night to night across the sky. Since the Earth always moves around the Sun faster than Mars, you might imagine that Mars's motion will always be retrograde.
-- Basically, that planets do not move with constant speed along their orbits. Rather, their speed varies so that the line joining the centers of the Sun and the planet sweeps out equal parts of an area in equal times. The point of nearest approach of the planet to the Sun is termed perihelion
If 150 g of sucrose dissolved in a 1.50 L water what is the molarity of a solution
Answers
Answer:
0.2923 molar
Explanation:
M = given mass /(molar mass× volume)
150/342(1.5)
150/513
0.2923M
What kind of reaction is KI(ag) + AgNO3 (aq) → Agl(s) + KNO3aq)?
A. A decomposition reaction
B. A synthesis reaction
C. Asingle-replacement reaction
D. A double-replacement reaction
Answers
Answer:
D
Explanation:
D is the correct answer
Which is a diatomic molecule?
Na-CI
o=O
H-F
Si-O
which one
Answers
When water goes from its liquid state to a gas which are being broke
Answers
Answer:
Studies have revealed that evaporation—the process by which water changes from a liquid to a gas—from oceans, seas, and other bodies of water (lakes, rivers, streams) provides nearly 90% of the moisture in our atmosphere. Most of the remaining 10% found in the atmosphere is released by plants through transpiration.
Explanation:
Help as fast possible I’ll mark you bbrainlist
Answers
Answer:
the farther they are the longer there cycle is. closer they are shorter time.
1. Two substances, both solids, start at the same temperature. You transfer
the same amount of energy into both solids, but substance 1 becomes a
liquid before substance 2. Which substance has a stronger molecular
attraction?
A Substance 1
B Substance 2
Please help I will give you Brainlyest
Answers
Answer:
B substance 2
Explanation:
1. Two substances, both solids, start at the same temperature. You transfer
the same amount of energy into both solids, but substance 1 becomes a
liquid before substance 2. Which substance has a stronger molecular
attraction?
A Substance 1
B Substance 2
Please help I will give you Brainlyest
Substance 2 has a stronger molecular attraction.
What are solids?Solid is one of the four fundamental states of matter. The molecules in a solid are closely packed together and contain the least amount of kinetic energy. A solid is characterized by structural rigidity and resistance to a force applied to the surface.
Both solids are supplied with an equal amount of energy. Out of both substances, substance 2 has a stronger molecular attraction due to which it can not easily change into a liquid while substance 1 has a lesser molecular attraction so supplying of few amounts of heat will change substance 1 into a liquid state.
Hence, Substance 2 has a stronger molecular attraction.
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Which of the following is an example of a physical change in digestion?
water being absorbed in the large intestines
enzymes break down food nutrients
nutrients are broken down into different molecules
saliva breaking down carbohydrates
Answers
Answer:
The answer would be C
Explanation:
I got it right on E D G E N U I T Y
2021
help me please i need help cuz its due today
Answers
Answer:
I believe the answer is a. I hope this helps
help help help plsss
Answers
Answer:
4.58×10^3
3.72×10^7
Explanation:
3.8×10^2 =380
+ 4.2×10^3=4200
= 4580 = 4.58×10^3
What are the atoms found at the bottom of the periodic table known as?
