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.
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A population of wood mice lives in a cool, moist temperate forest. Several
years of hot, dry weather have affected the plants in the area, which mice in the
population are most likely to survive this change and pass their genes on to their
offspring
Answer:
The mice that have the better adaptation for a hot and dry environment.
Explanation:
The mice which are most likely to survive this change and pass their genes to their offspring are: those with traits most adapted to the new environment.
What is natural selection?Natural selection can be defined as a biological process in which species of living organisms possess certain traits, qualities, and characteristics that enables them to successfully adapt to environmental factors, survive and reproduce, as well as passing on their genes to their offspring and subsequent generation.
The factors that affect natural selection.Some of the environmental factors that affect natural selection include the following;
PredatorsCompetition for food.Climate changeS-e-x matesBased on natural selection, specific characteristics (traits) and genes are inherited and passed from the parent organism to their offspring.
In conclusion, the mice which are most likely to survive this change and pass their genes to their offspring are those with characteristics (traits) that are most adapted to the new environment.
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What do lysosomes and Golgi bodies have in common
Answer:
they're examples of cell organelles
Explanation:
because it is ♥╣[-_-]╠♥
Given 25.43 g of O2 gas, how many liters of gas will you have at STP?
Answer value
Given :
Mass of O₂, m = 25.43 g.
To Find :
How many liters of gas will you have at STP.
Solution :
Molecular mass of O₂, M.M = 2 × 16 gram/mole
M.M = 32 gram/mole
Number of moles is given by :
n = m/M.M
n = 25.43/32 mole
n = 0.79 mole
Hence, this is the required solution.
What information does an energy diagram give?
A. It shows the transfer of potential energy to kinetic energy.
B. It shows how concentrations of reactants affect the energy.
C. It shows the rate of the reaction as a function of time.
D. It shows the energy requirements needed in order for a reaction to
occur.
The information from diagram shows the energy requirements needed in order for a reaction to
occur.
What is Collision theory?The collision theory states that each and every chemical reaction can occur between particles when the molecules collide each other.
The collision between particles is necessary but it is not sufficient for a reaction to take place. The collisions must be effective.
It is necessary to know the exact nature of an effective collision since this indicates whether particles react with each other and form new products.
According to collision theory, the reaction occur when molecules collide and molecules have sufficient activation energy to cross energy barrier.
Greater the energy, greater will be number of collision. Lesser energy, lesser will be number of collision.
Thus, the given energy diagram shows about the energy required for a reaction to take place.
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Answer: D) it shows the energy requirements needed in order for a reaction to occur.
10. A tracer is a radioactive element whose pathway through which a chemical reaction can be followed. Tracers are commonly used in the medical field and in the study of plants and animals. Radioactive Iodine-131(I131) can be used to study the function of the _____ gland assisting in detecting disease.
a. Adrenal
b. Salivary
c. Pituitary
d. Thyroid
1.The splitting of a heavy, unstable nucleus into two lighter nuclei is called _____.
a. Fission
b. Fusion
c. Radioactive Decay
d. Isotopes
Answer:
A) Fission
Explanation:
Fission is the splitting of a heavy, unstable nucleus into two lighter nuclei, and fusion is the process where two light nuclei combine together releasing vast amounts of energy.
Which element in the halogens group has the highest atomic mass?
Answer:
At
Explanation:
atomic mass increases as you go down a group
An element in the halogens group that has the highest atomic mass is known as Astatine (At).
What group in the periodic table is a halogen?The elements of group 17 are known as Halogens. It includes fluorine, chlorine, bromine, iodine, and Astatine. They have high electronegativities. Due to having 7 electrons in their outermost cells, they are highly reactive.
According to the context of this question, the atomic mass of the chemical element increases down the period. For example, fluorine having an atomic number of 9 have an atomic mass lower than compared to other its members.
Similarly, astatine is found at the lowest of the periodic table in the halogen group, so, it has the highest atomic mass.
Therefore, an element in the halogens group that has the highest atomic mass is known as Astatine (At).
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This is my question.............
Answer:
-3.15 °Celsius I think.
Answer:
-3 C
Explanation:
How can the rate of this reaction be increased
Answer:
If you increase the concentration of a reactant, there will be more of the chemical present. More reactant particles moving together allow more collisions to happen and so the reaction rate is increased. The higher the concentration of reactants, the faster the rate of a reaction will be.
1. Is the charge of nucleus positive, negative
or neutral?
What about the charge of an atom?
Answer:
nucleus contains protons and atom is neutral
Explanation:
as atom contains equal amount of protons and electrons
The reaction taking place in the sun's core _______.
A.
combines oxygen with hydrogen
B.
converts hydrogen to helium
C.
splits atoms of uranium
D.
burns carbon
The reaction that is taking place in the sun's core is the nuclear fusion of hydrogen to helium.
What is nuclear fusion?Nuclear fusion is a reaction where combination of two elements takes place, which in return releases or absorbed heat energy.
In the core of the sun high amount of heat energy is present as the result of the nuclear fusion of hydrogen to helium, and it is a exothermic process. i.e. it releases heat energy.
Hence, option (B) is correct it means in the sun's core conversion of hydrogen to helium takes place.
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When a solar eclipse happens, who can see it
1. Anyone around the equator
2. Anyone on the moon
3. Anyone who’s in the moons shadow
Answer:
1
Explanation:
Answer:
1.
Explanation:
. .. ......... . ........
helppp nowwww plsss!!!
Answer:
it is D
Explanation:
A tree for one is a renewable resource, but. It said "farmed trees" therefore the best way to farm trees it well, to farm them. But to sustainably farm them you would need to replace what you destroyed to be able to keep farming in the future.
Answer:
New trees are planted to replace those that are cut down is the correct answer.
have a nice day! (^o^)
Which factor will most likely increase the survival chances of an organism
living in an environment that is undergoing rapid changes?
Having a diverse gene pool will most likely increase an organism's chances of survival in an environment that is undergoing rapid change.
What is Gene Pool?The gene pool is the set of all genes or genetic information, in any population that is a particular species. It refers to the combination of all genes including alleles present in a reproductive population or species.
A larger gene pool has wider genomic diversity which is better able to respond to environmental challenges. It can consider any type of population. For example, a frog in a pond, a tree in a forest, etc.
The gene pool increases when a mutation changes a gene which leads to the survival of mutation.
Thus, having a diverse gene pool will most likely increase an organism's chances of survival in an environment that is undergoing rapid change.
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25 POINTS PLS ANSWER
Through which gas in the table do sound waves travel the fastest?
A. Ammonia Speed of sound 415
B. Air(dry) Speed of sound 346
C. Methane Speed of sound 450
D. Nitrous oxide speed of sound 263
Answer:
The answer would be methane if the problem is asking for the fastest
Explanation:
I hope this helps answer your question
:D
Answer: Methane
Explanation:
Took the quiz and got it right
Name of SiO3? Please hurry lol
5. Write the chemical equation for each of the following reactions:
a. ammonium chloride + calcium hydroxide →
calcium chloride + ammonia + water
b. C6H14 + oxygen →
carbon dioxide + water
What is electro-magnetic radiation?
It is a kind of radiation including visible light ,radio waves, gamma rays, and x-rays in witch electric and magnetic fields vary simultaneously. Hope that helps :)
How are behavioral adaptations and structural adaptations similar
Structural adaptations are physical features of an organism like the bill on a bird or the fur on a bear. Other adaptations are behavioral. Behavioral adaptations are the things organisms do to survive. For example, bird calls and migration are behavioral adaptations.
Copper reacts with silver nitrate to produce silver and copper(II) nitrate according to the equation below: Cu + 2AgNO3 →Cu(NO3)2 + 2Ag Calculate the number of moles of copper(II) nitrate produced when 5 moles of copper react. Type your answer as a number with 1 significant figure. Make sure to include the correct units in your answer. Units are a type of measurement i.e. gram (g) or mole (mol). Do not include the chemical formula in your answer. Answer:
Answer:
[tex]5\; \rm mol[/tex] of [tex]\rm Cu(NO_3)_2[/tex] would be produced (assuming that reaction does not run out of [tex]\rm AgNO_3[/tex] until all the [tex]\rm Cu[/tex] was converted.)
Explanation:
Make sure that the equation for this reaction is indeed balanced:
[tex]\rm Cu + 2\, AgNO_3 \to Cu(NO_3)_2 + 2\, Ag[/tex].
The coefficient of [tex]\rm Cu[/tex] and [tex]\rm Cu(NO_3)_2[/tex] are not shown. That implies that the coefficient of both species would be [tex]1[/tex]. In other words, the actual equation for this reaction should be:
[tex]\rm 1\; Cu + 2\; AgNO_3 \to 1\; Cu(NO_3)_2 + 2\; Ag[/tex].
Coefficient of [tex]\rm Cu[/tex] in this equation: [tex]1[/tex].
Coefficient of [tex]\rm Cu(NO_3)_2[/tex] in this equation: [tex]1[/tex].
Thus, the ratio between the coefficient of [tex]\rm Cu(NO_3)_2[/tex] and that of [tex]\rm Cu[/tex] would be [tex](1 / 1 ) = 1[/tex].
Assume that [tex]\rm Cu[/tex] is the limiting reactant of this reaction (that is: this reaction runs out of [tex]\rm Cu\![/tex] before running out of any other reactant.) This coefficient ratio would be equal to the ratio between:
[tex]n(\rm Cu(NO_3)_2)[/tex], the number of moles of [tex]\rm Cu(NO_3)_2[/tex] produced, and[tex]n(\rm Cu)[/tex], the number of moles of [tex]\rm Cu[/tex] consumed.Hence, under the assumption that [tex]\rm Cu[/tex] is the limiting reactant:
[tex]\displaystyle \frac{n(\rm Cu(NO_3)_2)}{n(\rm Cu)} = \frac{\text{coefficient of $\rm Cu(NO_3)_2$}}{\text{coefficient of $\rm Cu$}} = \frac{1}{1} = 1[/tex].
The question states that [tex]5\; \rm mol[/tex] of [tex]\rm Cu[/tex] was available. That is: [tex]n({\rm Cu}) = 5\; \rm mol[/tex]. Assume that [tex]\rm Cu\![/tex] is indeed the limiting reactant.
[tex]\begin{aligned} n({\rm Cu(NO_3)_2}) &= \frac{n(\rm Cu(NO_3)_2)}{n(\rm Cu)} \cdot n(\rm Cu) \\ &= 1 \times (5\; \rm mol) = 5\; \rm mol\end{aligned}[/tex].
Hence, under this assumption, [tex]5\; \rm mol[/tex] of [tex]\rm Cu(NO_3)_2[/tex] would be produced.
a. If you have 1.80 mol of H2, how many grams of NH3 can be produced
Answer:14.5 g
Explanation:N2 + 3H2 → 2NH2 0.60 mole of N, and 1.80 mole of H, were present as reactants. Only 14.5 g of NH3 are produced.
1. Given the following equation: Cu + 2 AgNO3 ---> Cu(NO3)2 + 2 Ag
a. If 12.6 moles of silver (Ag) were produced, how many moles of copper (Cu) were used?
Carbon-14 is used in radiocarbon dating.
The half-life of carbon-14 is 5.73E3 years. If a sample of carbon-14 has an activity of 0.350 Ci, what is the difference in activities between this sample and the same sample after 1.719E4 years?
Answer:
0.30625 Ci
Explanation:
From the question given above, the following data were obtained:
Half-life (t½) = 5.73E3 years
Original activity (Nₒ) = 0.350 Ci
Time (t) = 1.719E4 years
Difference in activities =?
Next, we shall determine number of half-lives that has elapse. This can be obtained as follow:
Half-life (t½) = 5.73E3 years = 5.73×10³ years
Time (t) = 1.719E4 years = 1.719×10⁴ years
Number of half-lives (n) =?
n = t / t(½)
n = 1.719×10⁴ / 5.73×10³
n = 3
Thus, 3 half-lives has elapsed.
Next, we shall determine the activity after 1.719E4 years. This can be obtained as follow:
Original activity (Nₒ) = 0.350 Ci
Number of half-lives (n) = 3
Activity remaining (N) =?
N = 1/2ⁿ × Nₒ
N = 1/2³ × 0.350
N = 1/8 × 0.350
N = 0.125 × 0.350
N = 0.04375 Ci
Finally, we shall determine the difference in activities. This can be obtained as follow:
Original activity (Nₒ) = 0.350 Ci
Activity remaining (N) = 0.04375 Ci
Difference in activities =?
Difference in activities = Nₒ – N
Difference in activities = 0.350 – 0.04375
Difference in activities = 0.30625 Ci.
what happens when carbon dioxide is passed through water?
Answer:
it results in the formation of a salt called calcium carbonate and the solution becomes or appears to be milk-like. It is because calcium carbonate is insoluble in water.
When salt dissolves in water, the water molecules are attracted by dissolves salt particles. This attraction is called ?
When salt dissolves in water, the water molecules are attracted by dissolves salt particles. This attraction is called dissociation.
Hope this helps you. Do mark me as brainliest.
The attraction of salt particles to water is called adhesion.
ADHESION:Adhesion is the attraction of water molecules to unlike particles i.e. not water. Adhesion can also be defined as the attraction between two unlike molecules or particles. According to this question, salt dissolves in water when water molecules are attracted by dissolved salt particles. This means that the attraction is between two unlike particles (water and salt).Therefore, the attraction of salt particles to water is called adhesion.
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What is the limiting reactant in a chemical reaction?
A. the reactants that runs out first
B. the product formed first
C. the reactant that slows the rate of reaction
D. the product formed in smallest quantity
If 2.5 moles of sulfur dioxide are created, how many moles of oxygen are necessary?
hellpp
Directions: Write True if the statement is correct, and false if it is incorrect.
1. The molecular formula can be calculated from the empirical formula if the molar
2. The molar mass represents the total mass, or 100 % of the compound.
mass is unknown.
3. Molecular formula gives the relative number of atoms of each element in the compound. 4. We can obtain the molecular formula from the empirical formula if we know the
molecular weight of the compound.
5. If a compound's chemical formula cannot be reduced any more, then the empirical formula is the same as
the molecular formula.
Answer:
Explanation:I think that there should be no explaing and straight to the showing.
What is the most likely outcome of an increase in the atmospheric temperature?
What type of molecule provide cells with energy
A- carbohydrate
B- nucleus acid
C- protein
D- water
Answer:
Explanation:
C other awnser is correcto
Answer:
The correct answer is C-Protein
Explanation:
Trust me bro, I know things ;)