Answer:
Molar mass of
N
2
=
28 g/mol
Moles of
40.5 g N
2
gas
=
40.5 g
28 g/mol
=
1.45 mol
1 mol
of any gas at
STP
occupies
22.4 L
of volume.
1.45 mol
of
N
2
gas will occupy
1.45
mol
×
22.4 L
1
mol
=
32.48 L
what happens to matter when a wave travels through it?
is a disturbance which travel through a medium that enables energy to be transferred from one point to another
I need the answers? Pls help!
please help me, or just tell me what laws they are (Boyle's law, Charles
Law, Avogadro's Law, Ideal
Gas Law, or Combined Gas Law) please thank you!
Answer:
Boyle's law states that the volume of a fixed mass of agass at constant temperature is inversely proportional to its pressure
List 5 spheres and give an example of something you would find in each sphere . Ill give 50 points
Sucrose (C₁₂H₂₂O₁₁) is combusted in air according to the following reaction:
C₁₂H₂₂O₁₁(s) + O₂(g) → CO₂(g) + H₂O(l)
How many grams of carbon dioxide would be produced by the complete combustion of 2.05 moles of sucrose in the presence of excess oxygen?
The mass of carbon dioxide that would be produced by the complete combustion of 2.05 moles of sucrose is 1,082.4 g.
Complete combustion of the sucroseThe complete combustion of sucrose in excess oxygen is given as follows;
C₁₂H₂₂O₁₁(s) + O₂(g) → CO₂(g) + H₂O(l)
balanced chemical equation is below;
C₁₂H₂₂O₁₁(s) + 12O₂(g) → 12CO₂(g) + 11H₂O(l)
from the reaction above;
1 mole of sucrose ----------> 12 mole of carbon dioxide
2.05 mole of sucrose ------> ?
= 2.05 x 12
= 24.6 moles
Mass of carbon dioxide1 mole of carbon dioxide = 44 g/mole
24.6 moles = ?
= 24.6 x 44
= 1,082.4 g
Thus, the mass of carbon dioxide that would be produced by the complete combustion of 2.05 moles of sucrose is 1,082.4 g.
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can guys help me to answer it
It is true
I hope it's help u
what is name of:
1.Ca(H2PO4)2,
2.Fe(HSO4)2,
3.(CaOH)2SO4
4.Al(OH)Cl2
1. Calcium hydrogen phosphate
2. Iron(II) Hydrogen Sulfate
3. Calcium hydroxide
4. Aluminum chloride hydroxide
this time, you will use what you have learned from the discussion . i know you can do it!
Which of the following is a correctly written chemical equation that demonstrates the conservation of mass?
Mg + HC1
→
H
2
+
MgC
1
2
Mg + HC1 → H 2 + MgC 1 2
H
2
O
+
C
O
2
→
H
2
C
O
3
H 2 O + C O 2 → H 2 C O 3
KC
1
O
3
→
KC1 +
O
2
KC 1 O 3 → KC1 + O 2
H
2
+
O
2
→
H
2
O
H 2 + O 2 → H 2 O
if I'm not mistaking it would be the second option
How do cell parts work together so the cell can survive and do its job? Describe at least two connections between the different cell parts in plant or animal cells.
Na + __CI2 → _NaCl
How many moles of Cl2 needed to make 2.5 moles NaCl?
Answer:
1.25 moles
Explanation:
You have 2.5 moles of Cl on product side and you need to make that equal on the reactant side. You can see it is Cl2 so you need to half 2.5 by 2 so both sides are equal. 2.5/2=1.25
advanced flow measuring devices ?
I need info about this topic please
Answer:
they are:-
venturi meter.
orfice plate.
Dall tube .
pitot tube.
Averaging pitot tube .
cone meter.
linear resis meter.
Can a molecule with nonpolar bonds ever be polar? Why
why not?
Answer:
A molecule that has only nonpolar bonds and no polar bonds cannot be polar.
Explanation:
However, a molecule that CONTAINS nonpolar bonds is different, because it can contain polar bonds. A molecule that contains nonpolar bonds can be polar as long as it also contains polar bonds.
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Which element of the third period had the highest first ionization energy?
•silicon
•sulfur
•argon
•sodium
Answer:
C.) Argon
Explanation:
This is because ionisation energy increases as we move from left to right in a period. Argon presents in the right most column and Argon is a novel gas and has 8 electrons in outermost orbital. So, it is highly stable. I hope I helped! ^-^
1a) Why do we study gases since reformation
We study gas since reformation in order to
Alter the the properties of hydrocarbon in the process of changing it's molecular structure.Its study also allows us to understand the behavior of matter.What are the properties of gases?Below are some few gas properties:
Diffusibility.CompressibilityExpansibilityLow DensityWhat is gas reformation?Gas reformation is defined production process which builds upon the existing natural gas.
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how many grams of mgcl2 are contained in 500 grams of a 1.0% solution
The mass percentage of the solution that we have in the question is 5 g.
What is percent w/w concentration?Percent w/w (weight/weight) concentration is a way to express the concentration of a solute in a solution as a percentage by mass. It represents the mass of the solute in grams per 100 grams of the solution.
Percent w/w concentration is commonly used in industries such as pharmaceuticals, food and beverage, and cosmetics to measure the concentration of active ingredients or additives in their products.
We know that;
%w/w = weight of the solute/Weight of the solution
Let the weight of the solute be x
1 = x/500 * 100/1
1 = 100x/500
500 = 100x
x = 5 g
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what reaction occurs when bleach mixed with heat
Answer:
ok im eating chips :)
Explanation:
The fumes being released are almost certainly chlorine, which as you have observed, is quite hazardous. Bleach usually contains strong warnings not to mix with any other cleaning chemical, as some of them will tend to rapidly decompose its active ingredient and release a lot of gaseous chlorine
What word is the best description for world population growth over the past 200 years?
Question 1 options:
Arithmetic
Logarithmic
Experimental
Exponential
Answer:
Exponential
Explanation:
Exponential means of an increase or becoming more and more rapid
how many moles of each atom are in 1 mole of oxygen
For one gram atomic weight of oxygen with atomic weight of 16 grams, one mole of oxygen also contains 6.022 × 1023 oxygen atoms.
Explanation:
Hope it help....
Both owls and snakes preying on mice in a forest is an example of
Competition as the owl and snakes are both preying on the mice in a forest so they are both competing for the food source of mice.
What is the meaning of prey?Animals that are carnivores (and some omnivores) must hunt their food. These hunters are called predators, and the animals or insects they hunt are called prey.
Owls are an example of predator organisms. They feed on smaller organisms such as mice. The mice, therefore, serve as prey for the owls.
Hence, competition as the owl and snakes are both preying on the mice in a forest so they are both competing for the food source of mice.
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Why did the colors in the Wells A1 and A3 change a second time in Procedure Steps 7 and 8? Was this because of reversible reactions?
Answer:
yes is it is because of the chemical reciation
Explanation:
m
Answer:
Yes this was because of reversable reactions, they added more drops of HCI and KOH which is the steps before they had added less.
Explanation:
To what temperature must a 2.65 L container filled with 4.47 g of Ar be heated in order to obtain a pressure of 1.24 atm?
The temperature of the container containing the 4.47 g of Ar is 358.16 K
How to determine the mole of ArMass of Ar = 4.47 gMolar mass of Ar = 40 g/mol Mole of Ar =?Mole = mass / molar mass
Mole of Ar = 4.47 / 40
Mole of Ar = 0.11175 mole
How to determine the temperature Number of mole (n) = 0.11175 molesVolume = 2.65 LPressure (P) = 1.24 atmGas constant (R) = 0.0821 atm.L/Kmol Temperature (T) =?The temperature of the container can be obtained by using the ideal gas equation as illustrated below:
PV = nRT
Divide both side by nR
T = PV / nR
T = (1.24 × 2.65) / (0.11175 × 0.0821)
T = 358.16 K
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If 15.00 mL of 0.0100 M Ca(IO3)2 solution are mixed with 0.500 g KI, what is the theoretical yield (in grams) of I2?
The theoretical yield of I2 in the reaction would be 0.23 g
Theoretical yieldThis refers to the stoichiometric yield of a reaction.
From the equation of the reaction:
Ca(IO3)2 + 10 KI + 12 HCl → 6 I2 + CaCl2 + 10 KCl + 6 H2O
The mole ratio of Ca(IO3)2 and I2 is 1: 6
Mole of 15.00 mL, 0.0100 M Ca(IO3)2 = 15/1000 x 0.0100
= 0.00015 mole
Equivalent mole of I2 = 0.00015 x 6
= 0.009 mole
mass of 0.0009 I2 = 0.0009 x 253.809
= 0.23 g
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What mass of H2 is needed to react with 8.75g oh O2 according to the following equation: O2(g)+H2(g)-->H2O(g)?
Answer:
1 mole Oxygen = 2 mole hydrogen0.21 mol oxygen = 0.54 mol hydrogenMass of hydrogen = moles molecularweight
Mass of hydrogen = 0.54 2 Mass of hydrogen = 1.08 grams.
Thus, for reacting with 8.75 grams of oxygen,
1.08 grams of hydrogen is required.
Explanation:
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4 FeS+ 7022 Fe2O3 + 4S02
How many grams sulfur dioxide are
produced if 124 grams of
iron(II) sulfide are used?
Taking into account the reaction stoichiometry, 90.33 grams of SO₂ are formed when 124 grams of iron(II) sulfide are used.
Reaction stoichiometryIn first place, the balanced reaction is:
4 FeS + 7 O₂ → 2 Fe₂O₃ + 4 SO₂
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
FeS: 4 moles O₂: 7 moles Fe₂O₃: 2 moles SO₂: 4 molesThe molar mass of the compounds is:
FeS: 87.85 g/moleO₂: 32 g/moleFe₂O₃: 159.7 g/moleSO₂: 64 g/moleThen, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
FeS: 4 moles ×87.85 g/mole= 351.4 gramsO₂: 7 moles ×32 g/mole= 224 gramsFe₂O₃: 2 moles ×159.7 g/mole= 319.4 gramsSO₂: 4 moles ×64 g/mole= 256 gramsMass of sulfur dioxide formedThe following rule of three can be applied: if by reaction stoichiometry 351.4 grams of FeS form 256 grams of SO₂, 124 grams of FeS form how much mass of SO₂?
[tex]mass of SO_{2} =\frac{124 grams of FeSx256 grams ofSO_{2}}{351.4 grams of FeS}[/tex]
mass of SO₂= 90.33 grams
Then, 90.33 grams of SO₂ are formed when 124 grams of iron(II) sulfide are used.
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An electrolytic cell is set up to plate Zr(s) from a solution containing Zr4 (aq). A current of 7.92 amps is run through this solution for 6.16 hours. The mass of Zr(s) plated out during this process is
The mass of Zr deposited in the process is 41.4 g.
What is electrolytic cell?An electrolytic cell is a chemical cell which produces electrical energy by non-spontaneous chemical processes.
From the question;
Zr^4+(aq) + 4e ------> Zr(s)
We know that;
91 g of Zr is deposited by 4(96500) C
xg of Zr is deposited by (7.92 × 6.16 × 60 × 60) C
xg = 91 g × (7.92 × 6.16 × 60 × 60) C/4(96500) C
x g = 41.4 g
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Select which of the following are renewable resources. Select all that apply.
Question 6 options:
Sunlight
Wind
Oil
Coal
Plants
Explanation:
Sunlight
Wind
Plants
Those option are an example
of a renewable source
how do you revive a person
Answer:
By revive, I assume you're talking about medical assistance.
Explanation:
You can use CPR, where you lay a person back, hold their head up, and push on their chest to the beat "staying alive", in which it keeps their heart beating. If they aren't breathing, you can do mouth to mouth breathing, and continue the process until help arrives or.. the person is no longer with us.
If you have a defibrillator, you can use it on a low amp, or whatever amp you think would be most suitable for the condition of the person.
*yes the person below copy/pasted my thingy. yes its funny.
Answer: i don't even know what you said but i think you said this,
CPR, where you lay a person back, hold their head up, and push on their chest to the beat "staying alive", in which it keeps their heart beating. If they aren't breathing, you can do mouth to mouth breathing, and continue the process until help arrives or.. the person is no longer with us,
If you have a defibrillator, you can use it on a low amp, or whatever amp you think would be most suitable for the condition of the person.
Hope this helps :)
A manual contains instructions for how to build a variety of structures using a set of interlocking bricks. If this scenario is used as a model for genetic information, which statement is correct?(1 point)
Each set of instructions is a protein.
Each set of instructions is a protein.
The manual is a chromosome.
The manual is a chromosome.
The interlocking bricks are the chromosomes.
The interlocking bricks are the chromosomes.
Each structure is a gene.
Each structure is a gene.
If this scenario is used as a model for genetic information, then the statement 'the manual is a chromosome' is correct. A chromosome contains linear arrangements of genes.
What is a chromosome?A chromosome can be considered as a long nucleotide sequence that contains linear arrangements of genes.
In a chromosome, each DNA strand contains a nucleotide sequence that may encode proteins (i.e., different genes).
A chromosome can then be considered as manual containing instructions (genes) for how to build a variety of structures using a set of interlocking bricks (nucleotides).
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Answer:
the manual is a chromosome
Explanation:
