Answers
since the unit for the heat of fusion is kJ/mol, you're going to have to convert the grams into moles in order to cancel out the unit. After that, you can solve like normal.
Specific heat capacity of a substance is the amount of heat required to raise the temperature by one degree Celsius of one gram of a substance. Therefore, the amount of heat required to melt 2108 g of water is 703.7kJ.
What is Enthalpy?Enthalpy term is basically used in thermodynamics to show the overall energy that a matter have. Mathematically, Enthalpy is directly proportional to specific heat capacity of a substances.
Mathematically,
q = n ×ΔH
where
q = amount of heat=?
ΔH = enthalpy=6.010 kJ/mol
n = no of moles
n = w / M.M
w = given mass
M.M = molar mass
moles of water=2108 g ÷18g/mol
=117.1 mol
substituting all the given values in the above equation, we get
q =6.010 kJ/mol ×117.1 mol
=703.7kJ
Therefore, the amount of heat required to melt 2108 g of water is 703.7kJ.
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Related Questions
Filtration is the most appropriate method for separating a solution of water and which substance?
A. alcohol
B. salt
C. sand
D. sugar
Answers
Answer:
Sand
Explanation:
If you get salt or sugar in your water, you have to legit desalinate it to get the water and item out. You need to evaporate the water by increasing temperature and then lower temperature to separate the substances.
If you have alcohol, you need to distill it by trapping it and stuff.
With sand, the molecules are much larger which lets you separate the substances easily.
For example, on a beach, you can slap a handful of sand in your pail, but the sand sinks to the bottom right? You can just pour out the water.
Where does water pollution come from
Answers
Answer:Water pollution can come from a variety of sources. Pollution can enter water directly, through both legal and illegal discharges from factories, for example, or imperfect water treatment plants. Spills and leaks from oil pipelines or hydraulic fracturing (fracking) operations can degrade water supplies.
Explanation:
a 2.00 mL sample of a substance A has a density of 18.4g/mL and a 5.00 mL sample of substance B has a density of 35.5g/mL. do you have an equal mass of substances A and b?
this question made my brain hurt. please explain :(
Answers
Answer:
no
Explanation:
make use of this formula to find the mass of each sample.
m=density*volume
Iron has a density of 7.86 g/cm3. Calculate the volume (in dL) of a piece of iron having a mass of 4.59 kg .
Answers
k = 10^3
1 cm^3 = 10^-2 dL
Solutions
Density = (mass)/(volume)
Volume = (mass)/(density)
Volume = (4.59 × 10^3g)/(7.68g/cm³)
Volume = 583.97 cm³
Volume = (583.97 cm³)(10^-2 dL/1 cm³)
So volume = 5.84 dL approximately
what is the chemical formula of (Sodium hydroxide ) ??
Answers
[tex]\huge{ \color{black}{ \boxed{ \color{hotpink}{Answer}}}}[/tex]
what is the chemical formula of (Sodium hydroxide ) ??
⚘ NaOHSodium hydroxide, Sodium oxidanide[tex] \: [/tex]
[tex]\large\tt\:⚘ \: MishiChaeYoon \: ⚘[/tex]
Answer:
The formula of Sodinm hydroxide is NaOH
Hope it helps
List of choices for questions 20-24: A. (1) CH3MgBr, (2) H3O , (3) CH3MgBr, (4) H3O B. (1) LDA, (2) CH3I, (3) H3O C. (1) CH3MgBr, (2) H3O , (3) NaBH4, (4) H3O D. (1) DIBAH, (2) H3O E. (1) NaOH, heat, (2) SOCl2, (3) CH
Answers
Answer:
h30
Explanation:
The lines of latitude are measured
from a line at the center of the Earth
called the
Answers
Answer:
parallels
Explanation:
hope it may help you
calculate the number of moles in 2.5 particle NaOH
Answers
Answer:
1.5055×10²⁴
Explanation:
................................
Which is an example of a three
dimensional measurement of
volume?
A. 120 cubic meters
B. 120 grams
C. 120 miles per hour
D. 120 units
Answers
Answer:
It's A. 120 cubic meters
Is this right:) please tell me
Answers
Answer:
I think that:
The tendency of an object to resist changes in motion: inertia
Attractive force:gravity
And everything else is right
Explanation:
I am not a physicist
But I passed physics with an A
Which of these outcomes is conclusive evidence that mixing sugar in water is a physical change?
Answers
Answer:
» Water changes from colorless to a pale colored solution.
» The solubility of water reduces because a saturated solution is formed.
» The freezing point of water decreases. [colligative property]
» The boiling point of water elevates [colligative property]
» The vapour pressure of water lowers [colligative property]
Explanation:
[tex].[/tex]
Is it me or is this year moving very fast?
Does anyone even remember Easter?
Answers
Answer:
I think you are moving fast my friend,but i don't remember Easter.
Answer:
yo fr i dont even remember last year christmas
Explanation:
What are the differences of a physical change and a chemical change?
Answers
Answer:
a physical change only changes the look of something whereas a chemical change occurs when one thing has a reaction and it forms a new substance.
Which of the following represents the electronic structure of three elements in the periodic table
A. 2.8.1 2.8.3 2.8.4 B. 2.8 2.8.1 2.8.2
C. 2.7 2.8 2.8.1 D. 2.1 2.8.1 2.8.8.1
Answers
Answer:
a
Explanation:
idieiiwwjjwjwjwissisisieiwiwiजिदिेिौिेजदजेजेनसनजसझधिै
Describe the differences between models and scientific laws and theories. (
Answers
Answer:
Scientific laws and theories have different jobs to do. A scientific law predicts the results of certain initial conditions. ... In simplest terms, a law predicts what happens while a theory proposes why. A theory will never grow up into a law, though the development of one often triggers progress on
Explanation:
The density of aluminum is 2.70 g/mL. What is the mass of a 15.9 cm X 11.6 cm X 7.3 cm block of aluminum?
Answers
Hi, the answer is 3510g
Step-by-step explanation:-
We know that density of a substance tells us the mass of exactly one unit of volume of given substance. In this question,
Aluminium density = 2.70g/mL
So,
V = L x W x H = 1300 cm³ = 1300 mL
m = D x V = (2.70 / 1300) = 3510g
1.List three (3) importance of photosynthesis to our ecosystem. a) b) c)
Answers
Answer:
It is the number one source of oxygen in the atmosphere. It contributes to the carbon cycle between the earth, the oceans, plants and animals. It contributes to the symbiotic relationship between plants, humans and animals. It directly or indirectly affects most life on Earth
Answer:
three importance are
it helps in fixing and balancing the amount of carbon dioxide and oxygen in the atmosphere
it provides the nutrition to the plant
it helps the. plant in its growth
Which of the following words means "the degree to which a measurement is precise and reliable"?
a. variable
b. accuracy
c. parameter
d. constant
Answers
a mixture , the different parts of which vary in composition and properties
Answers
Answer:
heterogeneous mixture
Explanation:
(a) A mixture with the same composition and properties throughout is called a homogeneous mixture. (b) A mixture, the different parts of which vary in composition and properties, is called a heterogeneous mixture.
Are ALL acids and based
harmful to humans?
Answers
The temperature of 150 mL of water is 25°C. What must happen for the temperature of the
water to increase to 35°C?
A. Thermal energy must be transferred to the water to increase the average kinetic
energy of the water molecules.
B. Thermal energy must be transferred from the water to decrease the average
kinetic energy of the water molecules.
C. Water must be removed to decrease the thermal energy.
D. More water must be added to increase the thermal energy.
Answers
Answer:D
Explanation:
Is thallium, TI, a solid, liquid, or gas?
Answers
Answer:
Thallium is a Solid
Hope it helps
Mark me as Brainliest plz!
:DD
compared to those
5. Electrons farther away from the nucleus in an atom have
closer to the nucleus.
O A. lower energy
OB. higher energy
O C. the same energy
O D. higher or lower energy, depending on the element
Answers
Explanation:
higher or lower energy, depending on the element
Answer:
B
Explanation:
why does beryllium not liberate hydrogen from acid readily
Answers
What kinds of questions cannot be answered by chemistry
Answers
I think?
The mass of an atom of element x is equivalent to the total mass of 7 hydrogen atoms
Answers
Assuming equimolar quantities of reactants, which compound will react to the greatest extent with boron trifluoride (BF3) in a Lewis acid-base reaction
Answers
NH3 is an example of a Lewis Base that will react extensively with BF3 to form the compound BF3NH3
To solve such this we must know the concept of acid-base reaction. Therefore, NH[tex]_3[/tex] is the compound that will react to the greatest extent with boron trifluoride (BF[tex]_3[/tex]) in a Lewis acid-base reaction.
What is chemical reaction?Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.
NH[tex]_3[/tex] is an example of a Lewis Base that will react extensively with BF[tex]_3[/tex] to form the compound NH[tex]_3[/tex] + BF[tex]_3[/tex] → [B (NH[tex]_3[/tex])F[tex]_3[/tex]].
Therefore, NH[tex]_3[/tex] is the compound that will react to the greatest extent with boron trifluoride (BF[tex]_3[/tex]) in a Lewis acid-base reaction.
Learn more about the chemical reactions, here:
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What is 47.35 dL= mL?
Answers
Answer:
4.735 litres
Explanation:
10 dL = 1 litre
47.35 dL = 47.35/10 = 4.735 litres
Rain soaks into the soil or runs off into oceans, rivers, and lakes. ___________ which process is this
Answers
Answer:
The water falls to the earth as precipitation, such as rain, hail, sleet, and snow. When precipitation reaches the earth's surface, some of it will flow along the surface of the land and enter surface water like lakes, streams, and rivers, as runoff. The rest of it soaks or percolates into the soil, called
the internacional system of units is based on ?
Answers
Answer:
The international system of units is basic on 7 units.
Hope it helps you.