If this same quantity of energy were transferred to 2.5 kg of water at it's boiling point what fraction of the water would be vaporized

Answers

Answer 1

Answer:

Fraction of water that can be vaporized = 0.0961 or 9.61%

Note : The question is incomplete. The complete question is given below:

A serving of Cheez-Its releases 130 kcal (1 kcal = 4.18 kJ) when digested by your body.

If this same quantity of energy were transferred to 2.5 kg of water at its boiling point, what  fraction of the water would be vaporized?

Explanation:

Energy released by a serving of Cheeze-Its = 130 kcal

Since 1 kcal = 4.18 kJ, 130 kcal = 130 * 4.18 kJ = 543.4 kJ

Heat of vaporization (evaporating or condensing) Hv, of water = 2260 J/g

From formula, quantity of heat, Q = mass  * heat of vaporization

mass of water = 2.5 kg = 2500 g

Q = 2500 g * 2260 J/g

Q  = 5650000 J = 5650 kJ

Therefore 2.5 kg of water requires 5650 kJ of heat for complete vaporization

Fraction of water that can be vaporized by 543.4 kJ energy = 543.4/5650

Fraction of water that can be vaporized = 0.0961 or 9.61%


Related Questions

The rows in the periodic table are called periods.
What is true about elements in the same period?
A. They have the same atomic mass.
B. Their magnetism increases in strength from left to right.
C. Their atomic numbers increase by 1 from left to right.
D. They have similar chemical properties.

Answers

Answer: C) Their Atomic Numbers increase by 1 from left to right

Answer: C

Explanation:

Answer this easy science question for brainiest
First come first served:)

Answers

Answer:

The nucleus is a collection of particles called protons, which are positively charged, and neutrons, which are electrically neutral.

Explanation:

Answer:

the person above me is right

hope you do good on your test

Explanation:

Which of the following might be included in a chemical
reaction?



a Molecules
b lons
C Pure elements
d All of the above

Answers

Answer:

D. All of the above

Explanation:

Molecules, ions, and pure elements might be included in a chemical reaction. Therefore, option (d) is correct.

What is a chemical reaction?

A chemical reaction can be described as a reaction that brings the chemical conversion of one chemical substance to another chemical substance. The reactions cause chemical changes that include the rearrangement of electrons in order to create and break bonds between atoms.

The compound or molecules which are primarily utilized in a reaction are called reactants. Chemical reactions give products, which possess characteristics different from the reactants of the reaction.

Chemical reactions take place at a definite rate of reaction at a given concentration, temperature, and pressure. The rate of reaction increases with the rising temperature of the reaction as more activation energy is available for reactant molcules collisions.

Therefore, in a chemical reaction reactants and products can be present as Molecules, ions, and pure elements.

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When scientists first studied electromagnetic energy, many theories were proposed to explain how these waves travel through space. Which statement below best describes how scientists arrived at the current understanding of electromagnetic energy?


Scientists all agreed with a single researcher who proposed the current theory.


Scientists completed internet searches of all available data to arrive at the current theory.


Scientists debated the theories with each other and compared the theories with scientific observations.


Scientists were able to observe the light from the brightest star in space, which verified the current theory

Answers

Answer:   Scientists debated the theories with each other and compared the theories with scientific observations.

         c your welcome

Explanation:

The statement which best describes how scientists arrived at the current understanding of electromagnetic energy is (C)  Scientists debated the theories with each other and compared the theories with scientific observations. hence option (C) is correct.

What is Electromagnetic Energy ?

Electromagnetic energy consists of waves of the electromagnetic field, propagating through space, carrying electromagnetic radiant energy.

It includes radio waves, microwaves, infrared, light, ultraviolet, X-rays, and gamma rays. All of these waves form part of the electromagnetic spectrum.

A unification criterion holds that a theory is empirically successful, and thus confirmed, to the ex- tent that it predicts or explains a large number of empirical results by ap- pealing to only a relatively small number of basic principles.

Theerfore, The statement which best describes how scientists arrived at the current understanding of electromagnetic energy is (C)  Scientists debated the theories with each other and compared the theories with scientific observations. hence option (C) is correct.

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Tendency of an object to float

Answers

Answer:

Buoyancy is the ability or tendency of an object to float in a fluid: a liquid or a gas. This happens because fluid pressure increases with depth. According to Archimedes' Principle, the buoyant force on a submerged object is equal to the weight of the liquid displaced by the object.

Explanation:

Among the groups of elements listed below, which have the same number of electrons in their outermost energy levels?
O NP. As, Sb
None of these
OK, Ca, Rb, Sr
OLI, B, C F
O Na Mg, ALS

Answers

Answer:

N, P, As, Sb

Explanation:

Elements present in the same group having same number of valence electrons. The first option is correct from given options because nitrogen, phosphorus, arsenic and antimony are present in same group thus having same number of electrons in outer most  energy level.

Electronic configuration of N:

N₇: [He] 2s² 2p³

Electronic configuration of P:

P₁₅: [Ne] 3s² 3p³

Electronic configuration As:

As₃₃: [Ar] 3d¹⁰ 4s² 4p³

Electronic configuration Sb:

Sb₅₁: [Kr] 4d¹⁰ 5s² 5p³

Here it is clear from electronic configuration all these elements have five number of valence electrons.

What is the ground state electron configuration for sodium (Na)?

Answers

Answer: Na has a ground-state electronic configuration of 1s2 2s2 2p6 3s1. Removing the 3s electron leaves us with the noble gas configuration 1s2  so a sodium ion is Na+.

Explanation: I HOPE THAT HELPED!

0.28gram of NH3 on decomposition gave 0.25gram of nitrogen and hydrogen. Find the volume of hydrogen evolved at Ntp. (2gram hydrogen at NTP= 22.4liter)

Answers

The volume of H₂ evolved at NTP=0.336 L

Further explanation

Reaction

Decomposition of NH₃

2NH₃ ⇒ N₂ + 3H₂

conservation mass : mass reactants=mass product

0.28 NH₃= 0.25 N₂ + 0.03 H₂

2 g H₂ = 22.4 L

so for 0.03 g :

[tex]\tt \dfrac{0.03}{2}\times 22.4=0.336[/tex]

Tell why someone should visit this planet neptune, what they might be able to see or do, what they will
remember most about their visit, etc. You might want to include things they would need to be
careful of, what clothes, equipment, etc. to bring. Remember, your goal is to persuade
travelers to visit your planet because it’s the “Number One Travel Destination in our Solar
System.” (1 paragraph min.)

Answers

362782bebehhehdhduwkekennebsbdhr

What is the name of the following atoms?
An atom with 3 protons and 4 neutrons what is the name?

Answers

Answer:

an atom with 3 protons and 4 neutrons is a lithium atom

Plate movement is thought to be the result of what ​

Answers

Answer: Plate movement is thought to be driven by a combination of the motion of the seafloor away from spreading ridges due to variations in topography and density changes in the crust.

Hope this helps

what are some non- examples of temperature

Answers

Answer:

Fahrenheit, Cabrowskin, Dixionanon, and Ancomthere. Those are non examples.

What is the mass of an atom with 44 protons, 42 electrons, and 57 neutrons?

Answers

Answer:

The atomic mass is 101.

Explanation:

Protons and neutrons are the only particles that contribute to mass. Electrons do have a mass, but it's so miniscule and insignificant that it doesn't contribute to the mass of an atom. In every instance of calculating atomic mass, add the number of protons to the number of neutrons.

Therefore,

44 + 57 = 101

number of protons + number of neutrons = atomic mass

Also, there can never be a negative amount of protons or neutrons, so if you get a negative number, there's something wrong.

Bonus Information:

Don't confuse mass with charge! As it says in its name, neutrons are neutral or have no charge. Protons (+) and electrons (-) are the only particles that have a charge, so calculating that would be different.

If you were calculating the atomic charge with the same numbers, your answer would be:

44 - 42 = 2

Charge = +2

What To Remember:

M = p + n

C = p - e

C = atomic charge, M = atomic mass, p =protons, n = neutrons, e = electrons

I hope this helps!

Select the correct answer

Giving brainliest

Answers

I believe it’s b sorry if it’s wrong I took this kind of class last year

Answer: is C&A

Explanation:the electric motor converts  electricity in to mechanical energy

the  electric generator converts mechanical energy to electricity so it could not be D.

and they don't use batteries as their main source of power so it could not be B.

hence forth it is C&A

HOPE THIS HELPS!!!!!!1

PLEASE MARK BRAINLIEST!!

The temperature of a sample of gas in a steel tank at 0.30 ATM at 25 Celsius if the pressure W20.59 ATM what would be the final temperature inside the tank in kelvin

Answers

The final temperature : 313.06 °C

Further explanation

Gay Lussac's Law  

When the volume is not changed, the gas pressure is proportional to its absolute temperature  

[tex]\dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}[/tex]

P1=0.3 atm

T1=25 + 273=298 K

P2=0.59 atm

[tex]\tt \dfrac{0.3}{298}=\dfrac{0.59}{T_2}\\\\T_2=586.06=313.06~^oC[/tex]

Which term describes the amount of order in a system

Answers

Answer:

entropy

Explanation:

Explain why the Earth has four different seasons​

Answers

Answer:

Earths rotation

Explanation:

Answer:

because if there was not four diferent season we would not have a day or a night because we would not be moving

Explanation:

Which statement describes a reason people must protect mineral resources?


A.
Minerals are used in only a few products.

B.
Mining has no effect on the natural surroundings.

C.
Minerals are pretty to look at but rarely useful.

D.
There is a limited amount of each mineral available.

Answers

D. There is a limited amount of each mineral available.

Answer:

The answer is D

Explanation:

Determine the mass of 2.86 mole Co(NH3)6Cl3

Answers

Answer:

765 g Co(NH₃)₆Cl₃

General Formulas and Concepts:

Reading the Periodic Table of Elements

Explanation:

Step 1: Define

2.86 mol Co(NH₃)₆Cl₃

Step 2: Define conversions

Molar Mass of Co - 58.93 g/mol

Molar Mass of N - 14.01 g/mol

Molar Mass of H - 1.01 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of Co(NH₃)₆Cl₃ - 58.93 + 6(14.01) + 18(1.01) + 3(35.45) = 267.52 g/mol

Step 3: Dimensional Analysis

[tex]2.86 \ mol \ Co(NH_3)_6Cl_3(\frac{267.52 \ g \ Co(NH_3)_6Cl_3}{1 \ mol \ Co(NH_3)_6Cl_3} )[/tex] = 765.107 g Co(NH₃)₆Cl₃

mol Co(NH₃)₆Cl₃ and mol Co(NH₃)₆Cl₃ cancel outWe are left with grams (mass)

Step 4: Simplify

We are given 3 sig figs. Follow sig fig rules.

765.107 g Co(NH₃)₆Cl₃ ≈ 765 g Co(NH₃)₆Cl₃

Which is the first step that geologists must do to compare rock layers at distant locations?

find the absolute age of rocks at both locations
compare a layer at one location to layers at other locations
identify index fossils in one or more layers at one location
collect fossils from different locations to study the organisms’ lifestyles

Answers

Answer: Comparing rock layers in distant places can be a challenge for geologists since these layers may have different environmental factors that caused different transformations in them.

Therefore, when it is necessary to establish a comparison between layers of rocks in different ligands, geologists must establish steps to make an efficient comparison and have results consistent with reality. To do this, they must first compare a layer in one location with layers in other locations, assign relative age to a layer in one location, and identify index fossils in one or more layers in one location.

Answer:

C

Explanation:

The fence is 2 meters feet tall. How tall
is the fence in centimeters?

Answers

Answer:

2 meters equal 200 centimeters

Explanation:

1 meter is equal to 100 centimeters.

Hope this helped, have a good day!

For a fence is 2 meters feet tall, the fence is 183.92 centimeters tall.

How to find centimeters?

There are 0.3048 meters in 1 foot. So, a 2 meters fence is equal to 2 x 0.3048 = 0.6096 feet tall.

To convert feet to centimeters, multiply the number of feet by 30.48. So, a 0.6096 feet fence is equal to 0.6096 x 30.48 = 183.92 centimeters tall.

Therefore, the fence is 183.92 centimeters tall.

Feet to centimeters:

1 feet = 30.48 centimeters

0.6096 feet × 30.48 centimeters/feet

= 183.92 centimeters

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Choose the statement that is NOT true.
Hundreds of stars with planets have been confirmed using the radial velocity method and the transit method.
The first Earth-size planets ever found outside the solar system were discovered in 2012 by the Kepler Mission team.
Planets orbiting stars in the "habitable zone" are likely to have life existing on them.
More than 50% of the 100 billion stars in the Milky Way galaxy have at least one planet orbiting.

Answers

Answer:

More than 50% of the 100 billion stars in the Milky Way galaxy have at least one planet orbiting.

Explanation:

This is False so this would be your Answer

Answer: planets orbiting stars in the habitabke zone are likely to have life existinv on them

Explanation:

because it is false and i took the quiz

A given mass of gas in a rigid container is heated from 100 °C to 300 °C. Which of the following best describes what will happen to the pressure of the gas? The pressure will

Answers

Answer:

Pressure will increase by a factor of 3.

Explanation:

PV = nRT —> Ideal gas equation.

Taking into account the Gay-Lussac's Law, the pressure will increase by a factor less than three.

Gay-Lussac's law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions against the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.

In summary, when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases.

Mathematically, Gay-Lussac's law indicates that the ratio of pressure to temperature is constant:

[tex]\frac{P}{T} =k[/tex]

Studying two different states, an initial state 1 and a final state 2, it is satisfied:

[tex]\frac{P1}{T1} =\frac{P2}{T2}[/tex]

In this case, a given mass of gas in a rigid container is heated from 100 ° C to 300 ° C, that is, it is heated from 373 ° K to 573 ° K. This indicates that the temperature is increasing by a factor less than three. Since pressure is directly proportional to temperature, pressure must increase in the same proportion.

Finally, the pressure will increase by a factor less than three.

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Hypothesize what would happen if most of the world's phytoplankton and seaweed disappeared? HURRY I NEED THIS NOWWWW PLEASE.

Answers

Answer:

Possible rapid deterioration of natural habitats where phytoplankton and seaweed exist.

Explanation:

Certain basic building blocks are needed for nautical environments to thrive. Assuming, in this context, without most of a certain type of oceanic species, the remaining habitats will suffer.

please help ASAP!!

(I added a pic)

Answers

The middle is noble gases the first one is alkaline metals and then the last one is the only one left

Brain’s family has a compost pile at home they need to put all the weeds the pull up from the garden in it as well as any vegetable waster they gather from the kitchen if they keep it moist all this vegetation will eventually turn into organic soil by the chemical process of decay since decay involves a variety of chemical reactions

Answers

Answer: b. It would happen faster at warmer air temperatures

Explanation:saw another site say this was the answer

confusin helppppppppp????

Answers

anything above 7 is a base and not acidic so

Answer:

d. an acid is the answer

Introduction to atoms) How do I do this

Answers

Answer:

and the answers are

1 electron cloud

2 neutron

3 no charge

4 electron shell

5 proton

6 + charge

7 nucleus

8 neutron

9 - charge

Explanation:

PLEASE GIVE BRAINLIST

The atomic weight of magnesium is 24.What does that mean? ​

Answers

Answer:

because a 24Mg atom has 12 neutrons in its nucleus

The density of mercury is 13.6 g/ml. What is the volume of 386g of mercury?

Answers

The density of mercury is 13.6g/lmL. The volume of a 200 gram sample of mercury will be :

Volume=  

200g/13.6g/mL

​  

Volume=14.7mL

Therefore the correct option will be E

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