Liquids is a type of matter which tend to become less soluble in water as the temperature rises. Therefore, the correct option is option B.
What is solubility?The ability of a material, the solute, to combine with some other substance, the solvent, is known as solubility in chemistry. Insolubility, or the solute's inability to create such a solution, is the opposite attribute.
The concentration of a solute inside a saturated solution—a solution where no more solute can indeed be dissolved—is typically used to gauge the degree of a substance's solubility in a particular solvent. The two compounds have been shown to be just at solubility equilibrium at this time. For some solutes or solvents, there will be no inherent limit, where in case the two materials are be "miscible in any quantities". Liquids is a type of matter which tend to become less soluble in water as the temperature rises.
Therefore, the correct option is option B.
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Substance A is mixed with water and donates 0.4% of its H+ ions. Which of the following BEST describes Substance A? (See picture provided.)
Answer:
Explanation:
honesty i just know it has to be b or d because bases don’t donate. acids donate.
Substance A is mixed with water and donates 0.4% of its H⁺ ions, therefore given substance is a weak acid & show poor conduction of electric current.
What are acids?According to the Arrhenius theory of acids and bases, acids are those species which gives H⁺ ion to the solution.
In the question it is given that, substance A is mixed with water and it donates H⁺ ion, from this it is clear that given substance is acid. It is also mention that it donates only 0.4% of its H⁺ ion means partial dissociation is observed, so we conclude that this acid is weak in nature. And due to weak dissociation and less number of available H⁺ ion it did not conduct electricity effectively.
Hence, option (D) is correct i.e. it is weak acid and a poor conductor of electric current.
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How many moles are present in 34 grams of Cu(OH)2? Show How you got the Answer
Answer:
0.347
Explanation:
moles= mass/molecular mass
moles= 34/64+(16×2)+(1×2)
moles=34/98
= 0.347 (3.s.f)
Do anyone kno the answer?
Answer:
I think it's c
Explanation:
because matter and energy come from water I think
When the equation C2H4 + O2 -> 4 CO2 + H2O is balanced using the smallest whole numbers, what is the coefficient of the O2?
Answer:
3
Explanation:
The unbalanced equation between ethene and oxygen is as follows:
C2H4 + O2 → CO2 + H2O
This equation is unbalanced, however, to balance it, we must ensure that the number of atoms of each element on the reactant and product side are equal.
Hence, based on the explanation above, the balanced equation is as follows;
C2H4 + 3O2 → 2CO2 + 2H2O
In this balanced equation, there are;
- 2 moles of carbon on both sides
- 4 moles of hydrogen on both sides
- 6 moles of oxygen on both sides
According to this question, the coefficient of O2 in the balanced equation is 3.
How many grams of MnO, are needed to prepare 10.0 liters of Cl2, gas at 22 C and 710 torr according to the following reaction?
MnO2 + 4NaCl + 2H2SO4 2Cl2 + MnSO4 + Na2SO4 + 2H2O
Answer:
15.5 g of MnO
Explanation:
The reaction is:
MnO₂ + 2NaCl + 2H₂SO₄ → Cl₂ + MnSO₄ + Na₂SO₄ + 2H₂O
We use the Ideal Gases Law to determine the moles of produced chlorine
P . V = n . R .T
We convert T° to Abs. value → 22°C + 273 = 295K
We convert Torr to atm → 710 Torr . 1atm /760 Torr = 0.934 atm
We replace: 10 L . 0.934 atm = n . 0.082 . 295K
( 10 L . 0.934 atm ) / (0.082 . 295K) = n → 0.386 moles
As the NaCl and the acid are in excess, we assume the MnO is the limiting reactant, and ratio is 1:1. so:
0.386 moles of chlorine came from 0.386 moles of MnO
We convert moles to mass: 0.386 . 40.3g/mol = 15.5 g
which of the following has the most NaCl (MM=58.44)
a. 50 mL of 4.1 M solution
b. 10 mL of a 1.8 M solution
c. 1 mole
d. 9.35 grams
Answer:
Option C - 1 mole
Explanationa) no of moles of solute = 4.1×0.05
moles = O.205
so the mass of of sodium chloride present is 0.205×58.44
Mass of NaCl = 11.98 g
b) no of moles of solute = 1.8×0.01= 0.018
so the mass of of sodium chloride present is 0.018×58.44
Mass of NaCl = 1.05g
C) number of moles of solute is 1 mole
mass of solute is =58.44g
d) mass =9.35g
So the conclusion is that 1 mole is the correct answer!!!!
Substance A is mixed with water and donates 0.4% of its H+ ions. Which of the following BEST describes Substance A?
A.
It is a strong base and a very poor conductor of electric current.
B.
It is a strong acid and a very good conductor of electric current.
C.
It is a weak base and a very good conductor of electric current.
D.
It is a weak acid and a poor conductor of electric current.
Answer:
D
Explanation:
Substance A is mixed with water and donates 0.4% of its H⁺ ions, therefore given substance is a weak acid & show poor conduction of electric current.
What are acids?According to the Arrhenius theory of acids and bases, acids are those species which gives H⁺ ion to the solution.
In the question it is given that, substance A is mixed with water and it donates H⁺ ion, from this it is clear that given substance is acid. It is also mention that it donates only 0.4% of its H⁺ ion means partial dissociation is observed, so we conclude that this acid is weak in nature. And due to weak dissociation and less number of available H⁺ ion it did not conduct electricity effectively.
Hence, option (D) is correct i.e. it is weak acid and a poor conductor of electric current.
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What is the name of this hydrocarbon
Answer:
the IUPAC name of the following compound is 2,3 dimethyl pentane!
250J of heat was added to a 2 g block of metal. The temperature of the metal was increased by 139.4K. What is the specific heat capacity of the metal?
Use the below equation to calculate specific heat capacity.
Include three decimal places and do not use units in your answer.
cmetal = Q/mΔT
Answer:
0.897
Explanation:
What is the concentration of a solution with a volume of .45 L that contains .9 moles of Iron (II) chloride?
Answer:
the concentration of the solution is 2 mol/L.
Explanation:
Molarity is defined as the concentration of a solution expressed in terms number of moles of solute per liter of solution.
Mathematically Molarity is expressed as follow;
[tex]Molarity = \frac{Moles \ of \ solute}{Liters \ of \ solution} \\\\[/tex]
Given;
Volume of the solution, V = 0.45 L
Moles of the solute, n = 0.9 moles
The concentration of the solution [tex]= \frac{0.9}{0.45} = 2 \ mol/L[/tex]
Therefore, the concentration of the solution is 2 mol/L.
How much energy is transferred from a plant to an herbivore that eats it? A. 5% B. 10% C. 20% D. 90%
Answer:
B. 10%
Explanation:
Science there’s a picture
Answer:
D)
Explanation:
seems like the most logical option out of all listed.
Which of the following gas samples would have the largest volume, if all samples are at the same temperature and pressure?
1) 5*10^23 molecules of O2
2) 263 grams of Xe
3) 0.403 moles CH4
4) they would all have the same volume
Answer:
d
Explanation:
they would all have the same volumes
A schoolbus accelerates to 65 mph and enters the freeway. It travels
for 2.3 hours at that speed while on the freeway. What's the distance
travelled on the freeway?
Answer:
Distance cover by school bus = 149.5 miles
Explanation:
Given:
Velocity of school bus = 65 mph
Time taken by school bus = 2.3 hours
Find:
Distance cover by school bus
Computation:
Distance cover = Velocity x Time taken
Distance cover by school bus = Velocity of school bus x Time taken by school bus
Distance cover by school bus = 65 x 2.3
Distance cover by school bus = 149.5 miles
A sample of gas at 250 K has a pressure of 0.857 atm and a volume of 115 L. How many moles of gas are in the sample?
Answer:
0.208 mol
Explanation:
Assuming the gas sample behaves like an ideal gas, we can solve this problem by using the following formula:
PV = nRTWhere:
P = 0.857 atmV = 115 Ln = ?R = 0.082 atm·L·mol⁻¹·K⁻¹T = 250 KWe input the data:
0.857 atm * 115 L = n * 0.082 atm·L·mol⁻¹·K⁻¹ * 250 KAnd solve for n:
n = 0.208 molThe nucleus in the center of an atom contains ___ and __ ?
Answer:
protons and neutrons
Explanation:
The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).
8. What is involved in building and running the mine
Answer:
Explanation:
minimizing environmental effects.
ensuring public health and safety.
preserving water quality.
establishing new landforms and vegetation.
removing waste and hazardous material.
stabilizing land to protect against erosion.
How many molecules are in 88g of carbon dioxide?
Answer:there are 44 grams
DNA would be found within which classification of biological molecules?
proteins
lipids
nucleic acids
carbohydrates
Answer:
Nucleic acids
Answer:
Nucleic acids is the correct answer hope it helps
________ interference occurs when two or more waves overlap with the same direction of displacement and build up a single, larger wave.
Multiplicative
Destructive
Instructive
Constructive
Answer:
Constrictive
Explanation:
If a microwave uses 96kj of energy in 2 minutes, what is the power rating?
Answer:
2-7
Explanation:
What is the relationship between the streams velocity and the rate of erosion?
Earth science
Answer:
If the water velocity decreases, the rate of erosion increases
Explanation:
C12H26O + SO3+NaOH ----> C12H25NaSO4+ H2O
If you need 11900 g of C12H25NaSO4 (Sodium Lauryl Sulfate) how many grams of C12H26O (Triglyceride) do you need?
Answer:
We can solve this by the method of which i solved your one question earlier
so again here molar mass of C12H25NaSO4 is 288.372 and number of moles for 11900 gm of C12H25NaSO4 will be = 11900/288.372
which is almost = 41.26 moles
so to get one mole of C12H25NaSO4 we need one mole of C12H26O
so for 41.26 moles of C12H25NaSO4 it will require 41 26 moles of C12H26O
so the mass of C12H26O = 41.26× its molar mass
C12H26O = 41.26×186.34
= 7688.38 gm!!
so the conclusion is If you need 11900 g of C12H25NaSO4 (Sodium Lauryl Sulfate) you need C12H26O 7688.38 gm !!
Again i d k wether it's right or wrong but i tried my best hope it helped you!!
all the mixture are harmful for us. is this statement true? justify with two examples
Answer:
no.it is false.some are useful.like mixture of h2 and O 2 to form water.
Answer:
no some of mixture are useful
Explanation:
h2 and o2 to form water
A 0.582 mol sample of an ideal gas is at 15°C and 18.8 atm. Calculate the volume for this gas.
Answer: The volume for this gas is 0.732 L.
Explanation:
Given : No. of moles = 0.582 mol
Temperature = [tex]15^{o}C = (15 + 273) K = 288 K[/tex]
Pressure = 18.8 atm
Using the ideal gas equation, volume for the given gas is calculated as follows.
PV = nRT
where,
P = pressure
V = volume
n = number of moles
R = gas constant = 0.0821 L atm/mol K
T = temperature
Substitute the values into above formula.
[tex]PV = nRT\\18.8 atm \times V = 0.582 mol \times 0.0821 L atm/mol K \times 288 K\\V = \frac{0.582 mol \times 0.0821 L atm/mol K \times 288 K}{18.8}\\= \frac{13.761}{18.8}\\= 0.732 L[/tex]
Therefore, it can be concluded that the volume for this gas is 0.732 L.
Sally adds 3.13 moles of argon to a 5.29 liter balloon that already contained 4.21 moles of argonWhat is the volume of the balloon after the addition of the extra gas?
What is the initial reactant for a fusion reaction in the sun?
a) Iron-56
b) Hydrogen-1
Hydrogen
Pog Pog Pog I'm a PogChamp
Hydrogen-1 serves as the starting reactant in fusion reactions in the sun. This is due to the sun's composition, which is around 70% hydrogen and 28% helium with 2% heavier components. As a result, hydrogen-1 is both the most prevalent and most likely to be employed in a fusion process in the sun.
What is the way to make helium-4 ?Two hydrogen-1 nuclei are fused together to create a helium-4 nucleus in the sun's fusion reaction, which releases energy in the process. This is the most significant energy source in the sun and is known as the proton-proton chain reaction.
When two hydrogen-1 nuclei collide to generate a deuterium nucleus, a gamma ray is released as a result, starting the reaction. Then, this deuterium nucleus strikes another.A helium-3 nucleus is created from a hydrogen-1 nucleus, which also produces a gamma ray.
The reaction is finally finished when two helium-3 nuclei meet to produce a helium-4 nucleus, producing two gamma rays in the process. Since hydrogen-1 is the most prevalent element in the sun and the element that is most likely to be employed in the proton-proton chain reaction, it is the first reactant for a fusion process in the sun.
A deuterium nucleus is created by the collision of two hydrogen-1 nuclei, which is followed by a sequence of further processes that ultimately result in the development of a helium-4 nucleus.
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Benzene is a liquid with boiling point equal to 80°C. At this temperature, it is found that particles of benzene
vapors are more energetic than particles of liquid benzene. How will you explain this observation?
Answer:
Explanation:
Particles of benzene vapors are more energetic because of benzene vapours have gained extra energy in the form of latent heat of vaporisation. Hence it is more energetic.
Plz help question is in attachment
Answer:
The total mass will be same of both side!!!!! ig so
Science study island
Answer:
C)
Explanation:
They can move at rates of up to four inches (10 centimeters) per year, but most move much slower than that. Different parts of a plate move at different speeds. The plates move in different directions, colliding, moving away from, and sliding past one another. Most plates are made of both oceanic and continental crust.