According to the stoichiometry and given chemical equation ,5.25 moles of oxygen are used in the reaction to produce 3.5 moles of aluminium oxide.
What is stoichiometry?It is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.
In the given chemical equation, 3 mole of oxygen produces 2 moles of aluminium oxide.
Therefore for 3.5 moles of of aluminium oxide to be produced 3.5×3/2= 5.25 moles of oxygen are used.
Thus, 5.25 moles of oxygen were used in the reaction to produce 3.5 moles of aluminium oxide.
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Question 1 of 10
Match the term in Column 1 to the corresponding statement in Column 2.
BRUH CAN SOMEONE HELP!?!?!?
Which element will gain only one electron during a chemical reaction?
1. nitrogen
2.chlorine
3.carbon
4.oxygen
Answer:
nitrogenExplanation:
SANA PO MAKATULONG PO YUNG SAGOT NA BINIGAY KO
An inherited behavior that helps an animal meet its needs
Answer:
the answer is adaptations
Explanation:
A body part or behavior that helps an animal meet its need in its environment is called an adaptation. All adaptions are inherited traits. Camouflage is an animal's color or pattern that help it blend in with its surroundings.
At a festival, spherical balloons with a radius of
110.cm
are to be inflated with hot air and released. The air at the festival will have a temperature of
25°C
and must be heated to
100°C
to make the balloons float.
3.00kg
of butane
C4H10
fuel are available to be burned to heat the air. Calculate the maximum number of balloons that can be inflated with hot air.
Here are some data you may find useful:
Specific heat capacity of air:
1.009J·g°C
Density of air at
100°C
:
0.946kgm3
Density of butane at
100°C
:
1.898kgm3
Formation enthalpy of butane at
25°C
:
What is the advantage of seeds that can be spread over a wide area?
A. They are more likely to start growing.
B. They may have more competition.
C. They are more likely to develop useful mutations.
D. They may have less competition for resources.
Answer:
I'm fairly sure it's D
Explanation:
If they're more spread out than they're roots in theory should have more space. Sorry if I'm wrong
An unknown gas has a volume of 20L at 140K. What is its volume at STP? Be sure to show the setup and the final
answer and unit.
Show Your Work
Answer:
v₂ = 39L
Explanation:
Given parameters:
Initial volume of gas = 20L
Initial temperature = 140K
Unknown:
Final volume = ?
Solution:
Since the standard temperature of any gas is 273K, the final temperature is this 273K;
Applying Charles's law:
[tex]\frac{v_{1} }{T_{1} }[/tex] = [tex]\frac{v_{2} }{T_{2} }[/tex]
v and T are volume and Temperature
[tex]\frac{20}{140}[/tex] = [tex]\frac{v_{2} }{273}[/tex]
v₂ x 140 = 20 x 273
v₂ = 39L
What does the entropy of a reaction describe?
Answer:
entrophy is a measure of the degree of randomness or disorder of a system
Answer:
The amount of randomness in a system.
Explanation:
took test
Which of the following best describes the particles in an atom?
Answer:
Electrons move around a nucleus.
Explanation:
HELP ASAP WILL MARK BRAINLIEST
Answer:
Its C
Explanation:
Question 3 of 10
The bonds of the products store 22 kJ more energy than the bonds of the
reactants. How is energy conserved during this reaction?
A. The surroundings absorb 22 kJ of energy from the reaction
system.
B. The reaction uses up 22 kJ of energy when bonds break.
C. The reaction system absorbs 22 kJ of energy from the
surroundings.
D. The reaction creates 22 kJ of energy when bonds form.
Answer: The answer is C. The reaction system absorbs 22 kJ of energy from the surroundings.
Explanation: I just took the quiz and it said I got it right.
As per the law of conservation of energy:
C. The reaction system absorbs 22 kJ of energy from the surroundings
Law of conservation of energy:This law of energy states that the energy remains conserved its neither created nor destroyed. It remains conserved throughout the reaction.
when an amount of heat gets absorbed during the reaction from the surroundings this type of reaction is known as an endothermic reaction.
So, for fulfilling law of conservation, same amount of energy must be asborbed.
Thus, option C is correct.
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Please help due in a few minutes
Answer:
Here is the opportunity for
ciaracrudup to have brainliest
since you need another answer
Explanation:
Only smart people are allowed to answer ONLY smart people............... If you can answer this correctly then maybe you are actually yourself!!!
Fill in the blanks: ______ compounds break up into ______ and ______ in solution, which can move freely and carry an _______ current.
Answer:
Fill in the blanks: IONIC compounds break up into ANIONS and CATION in solution, which can move freely and carry an ELECTRICAL current.
18 g of oxygen reacts completely with 4 g of hydrogen we would expect how many grams of water
A. Less than 22 grams
B. More than 22 grams
C. 22 grams because mass cannot be created or destroyed
D. There is no way to tell by this information
Answer:
C. 22 grams because mass cannot be created or destroyed
Explanation:
In this reaction and in any chemical reaction, mass is expected to always be conserved.
According to the law of conservation of matter "in a chemical reaction, matter is neither created nor destroyed but can be changed from one form to another".
Based on this law, the mass of reactants and products must be the same in a chemical reaction. So, the sum of the mass of the reactants must be equal to the mass of the product.Which statement correctly describes a reaction in dynamic equilibrium?
Answer:
The answer is B - At dynamic equilibrium, the reactions continue but the amounts of reactants and products do not change.
Explanation:
got it right on Edge
which environment is characterized by high temperature and low humidity
A. Desert
B. mountain
C. rainforest
D. tundra
Answer:
Desert
Explanation:
Which element has the electron configuration 1s22s22p63s23p3? Nitrogen (N) Oxygen (O) Phosphorus (P) Sulfur (S)
Answer:
Phosphorus
Explanation:
Calcium carbonate, CaCO3, decomposes when heated to
calcium oxide (Cao) and carbon dioxide (CO2). If 100 g of
calcium carbonate is allowed to decompose, 56 g of calcium
oxide is produced. What mass of carbon dioxide is produced
by the decomposition?
Answer:
Approx. 80.g
80
⋅
g
Explanation:
We need a stoichiometric reaction that represents the decomposition of calcium carbonate:
C
a
C
O
3
(
s
)
+
Δ
→
C
a
O
(
s
)
+
C
O
2
(
g
)
↑
⏐
And thus calcium oxide and calcium carbonate are present in equimolar amounts:
Moles of calcium oxide
=
44.5
⋅
g
56.08
⋅
g
⋅
m
o
l
−
1
=
0.794
⋅
m
o
l
.
Given the stoichiometry of the reaction, an equimolar quantity of calcium carbonate MUST have been present.
This represents a mass of
0.794
⋅
m
o
l
×
100.09
⋅
g
⋅
m
o
l
−
1
≅
80
⋅
g
In the decomposition reaction, what does the
Δ
symbol represent?
Explanation:
44 gm mass of carbon dioxide is produced by the decomposition.
What is meant by Decomposition reaction?
Chemical species disintegrate into more straightforward components during decomposition events. Energy input is typically required for decomposition reactions.
For instance, the thermal breakdown of potassium chlorate (KClO3) is a typical method for creating oxygen gas in laboratories.
Calculations:
CaCO3 → CO2 + CaO
depending on the conservation of mass
mass of the product = mass of the reactant
100 g = ( X + 56 )
mass of CO2 = 100 - 56
= 44 g
Thus, 44 gm mass of carbon dioxide is produced by the decomposition.
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An unknown solution has a pH of 7. How would you classify this solution?
hen looking at a cell model, the dots on the endoplasmic reticulum represent-A. golgibodies B. ribosomesC. nucleiD. lysosomes
Answer:
I'm pretty sure it's ribosomes
Explanation:
because the endoplasmic reticulum is where proteins are packaged and made
Describe the relationship of organism With the environment
How does panting help the dog maintain homeostasis?
Panting helps the dog maintain homeostasis because panting is the equivalent of humans sweating. Dogs pant to cool themselves down to reachieve their "normal" body temperature. Homestasis is the individuals sense of equilibrium and a dog panting helps them to acheive their temperature homeostasis.
Linda is learning how to bowl and
wants to increase the acceleration of
the bowling ball when she throws it.
Which of the following best explains
one way that Linda could increase the
acceleration of the bowling ball?
A Throw the ball with greater force
B Throw the ball in a straighter line
C Throw a ball that has greater mass
D Throw the ball with her other
hand
Please help im almost out of time ill mark BRAINLIESTTT
Answer:
The first one is actually Location D
The second one is Location B
I can't read all of the 3rd one, but if it says winter, its B, if it says summer its D
Explanation:
Which statement correctly describes a reaction in dynamic equilibrium? At dynamic equilibrium, the reactions stop and the amounts of reactants and products do not change. At dynamic equilibrium, the reactions continue but the amounts of reactants and products do not change. At dynamic equilibrium, the reactions stop but the amounts of reactants and products are changing. At dynamic equilibrium, the reactions continue and the amounts of reactants and products are changing.
Answer:
At dynamic equilibrium, the reactions continue but the amounts of reactants and products do not change.
Explanation:
At dynamic equilibrium, the reactions continue but according to the law of conservation of mass, the amounts of reactants and products don't change.
At dynamic equilibrium, the reactions takes place, however, the amount of reactants and products do not change.
• Dynamic equilibrium prevails once a reversible reaction takes place.
• In this the transition of the substances between the reactants and products takes place at equivalent rates, thus, there is no net change.
• The formation of products and reactants takes place at such a rate that the concentration of both stays the same.
• It is an illustration of a system in steady state, like in a closed system when reactions do take place, however, at such a rate that the composition of the mixture does not varies with time.
Thus, the statement, that is, at dynamic equilibrium, the reactions continue but the amounts of reactants and products do not change is relevant.
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What is the atmosphere?
Answer:
atmosphere is the mixture of gases that surrounds the Earth.
carbon dioxide and water vapor are variable gases because
Answer:
Their amount is not consistent at all parts of the atmosphere
Explanation:
Carbon dioxide and water vapor exists as variable gases in the atmosphere because their amount varies from one part to the other.
The abundance of variable gases is influenced strongly by activities from the surface. This variability occurs a result of the contribution from from life activities on the surface. Also, due to properties of the gases, they are not evenly distributed. At certain altitudes, the amount of water vapor can be low.Carbon dioxide and water vapor are variable gases because their amount is not consistent at all parts of the atmosphere.
Surface activities have a significant impact on the abundance of variable gases.This variation arises as a result of the input of surface life activities.They are also not uniformly dispersed due to the characteristics of the gases.Water vapor levels might be low at particular heights.Carbon dioxide and water vapor are variable gases because their amount is not consistent at all parts of the atmosphere.For more information:
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Given the speed of light as 3.0 ✕ 108 m/s, calculate the wavelength of the electromagnetic radiation whose frequency is 6.700 ✕ 1012 Hz.
Answer:
Wavelength = [tex]4.48*10^{-5}m[/tex]
Explanation:
Given the following data;
Speed of light, V = 3 * 10^{8}m/s
Frequency, F = 6.700 * 10^{12}Hz.
To find the wavelength
We know that that the speed of light is given by the formula;
[tex] Speed of light, V = wavelength * frequency [/tex]
Making wavelength the subject of formula, we have;
[tex] Wavelength = \frac {speed \; of \; light}{frequency} [/tex]
Substituting into the equation, we have;
[tex] Wavelength = \frac {3 *10^{8}}{6.700 ✕ 10^{12}} [/tex]
Simplifying the equation, we have;
Wavelength = 4.48*10^{-5} m
Therefore, the wavelength of the electromagnetic radiation is [tex]4.48*10^{-5} meters[/tex]
Who was the first person credited with developing an atomic theory based on the results of experiments?
Answer:
John Dalton, an English chemist and meteorologist, is credited with the first modern atomic theory based on his experiments with atmospheric gases.
HELP ASAP, PLEASEEE
If an atom contains 5 positively charged protons and 5 negatively charged electrons the total charge on each atom is zero. In your own words explain why the total charge on the atom is zero.
Answer:
When an atom is electrically neutral, it means that the overall charge of the atom is zero. ... The charge from a proton or electron are of equal strength, therefore if an atom has an equal number of protons and electrons, it will be electrically neutral.
Explanation:
Answer:
Protons have a positive electric charge, and neutrons are neutral which means they have no electric charge. Atoms normally have the same number of protons and electrons. The negative charge of the electron cancels out the positive charge of the proton giving the atom a zero net (or neutral) charge.
Antoine Lavoisier made chemicals react within a closed container. The mass of the container and chemicals after the reaction weighed the same as the container and chemicals before the reaction showing that no mass was lost. This led to the Law of __________________.
Action-Reaction
Elasticity
Atoms
Conservation of Mass
Answer:
Conservation of Mass
Explanation:
I did the test on K12
Answer:
Conservation of Mass
Explanation:
Lavoisier conducted many experiments of this type. He found in all cases that the mass of the reactants is equal to the mass of the products. His conclusion, called the states that in a chemical reaction, atoms are neither created nor destroyed. - www.classzone.com
