Well, by definition,
molarity
=
moles of solute
volume of solution
Please show work when you’re doing this! Thank you
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.
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 is the mass of 7.10 x 10^22 molecules of SO3?
Answer:
it is 80.06 g/mol
Explanation:
What is the total number of potassium atoms of this chemical equation? 2CrCO6s+4KOHaq→KHCr2CO10aq+K2CO3aq+KHCOOaq+H2Ol
Answer:
4
Explanation:
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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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this time, you will use what you have learned from the discussion . i know you can do it!
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....
The synthesis reaction to form boron hydride is: 2B(s) + 3H, (g) – B,H,(9) AH = +36 KJ.
What is the enthalpy value for the manipulated reaction: 1/2B, H,(9) - B(s) + 3/2H, (g)?
Answer:-18 KJ
Explanation:
The second reaction is obtained from the first when the first reaction is divided by 2 and reversed. The enthalpy change for the second reaction is -18 kJ.
What is enthalpy?The term enthalpy is defined as the heat absorbed or evolved in a reaction. It could be positive or negative.
If we look at the two reactions as shown in the question, we can see that the second reaction is obtained from the first when the first reaction is divided by 2 and reversed.
Hence, it the follows that the enthalpy change for the second reaction is -18 kJ.
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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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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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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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How many grams of O2 are needed to completely burn 69.3g C3H8?
Answer:
C3H8 + 5O2 --> 3CO2 +4H2O
no.of moles of C3H8=64.3/(3*12+8) =1.461363636moles
no.of moles of O2=1.461363636*5 =7.306818moles
mass of O2= 7.306818*(16*2)=233.81g
Explanation:
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:
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
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! ^-^
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:
which of the following is a cycloalkane?
Answer:
a
Explanation:
Answer:
cyclopentane cyclobutene cyclohexane cycloheptane
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.
helppppppppppppppppppp
Answer:
a. brightness of light
b. the light intensity on the sensor goes below 100( reduces)
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
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 :)
List 5 spheres and give an example of something you would find in each sphere . Ill give 50 points
please help!
The amount of available energy decreases with each step up the energy pyramid. How is this related to the fact that there are so many more producers than consumers on Earth?
Answer:
The energy decreases as you move from the bottom to the top of the energy pyramid. 90% of the energy entering each step of the pyramid is used up by the consumers, only 10% of the energy get stored. So, when the next level on the pyramid eats them, that 10% gets passed down to them Use the diagram below to answer the question.
Explanation:
I am sorry if I am wrong
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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.
Learn more about natural gas:
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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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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
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
