What will the final temperature of the a block of brass with a mass of 30.6 g is at 87.4°C
after it's added to 62.3 g of water at 28.3°C. The specific heat of aluminum is 0.380
J/gºC.

Answers

Answer 1

The final temperature of the block of brass with a mass of 30.6 g at 87.4°C is 30.82°C.

SPECIFIC HEAT CAPACITY:

The amount of heat absorbed or released by a substance can be calculated using the following formula:

Q = m × c × ∆T

Q(water) = - Q(metal)

(m × c × ∆T) water = - (m × c × ∆T) metal

According to this question;

METAL:

m = 30.6gc = 0.380 J/g°C∆T = T - 87.4°C

WATER:

m = 62.3gc = 4.184J/g°C∆T = T - 28.3°C

62.3 × 4.184 × (T - 28.3) = - {30.6 × 0.380 × (T - 87.4)}

260.7T - 7376.8 = - {11.63T - 1016.3}

260.7T - 7376.8 = -11.63T + 1016.3

260.7T + 11.63T = 1016.3 + 7376.8

272.33T = 8393.1

T = 8393.1 ÷ 272.33

T = 30.82°C

Therefore, the final temperature of the block of brass with a mass of 30.6 g at 87.4°C is 30.82°C.

Learn more at: https://brainly.com/question/11194034?referrer=searchResults


Related Questions

Two students, Janelle and Corey, are ready to test their designs.

Janelle made her solar oven by lining a piece of poster board with aluminum foil, shaping it into a cone, and placing it over a piece of black paper in an empty box. The food will go in a plastic sandwich bag on top of the black paper in the center of the cone. The image shows Janelle's cone oven.

cone shaped solar oven
Corey made his solar oven by lining the inside of a shoe box with black paper, placing a piece of plastic wrap over the bottom of the shoe box, and lining the lid of the box with aluminum foil. He used a pencil to prop the lid open at an angle. The food will go on the black paper under the plastic wrap. The image shows Corey's shoe box oven.

shoe box solar oven
Janelle's and Corey's designs both use aluminum foil, black paper, and either a plastic bag or plastic wrap. What is the purpose of each of these materials in the designs?

Answers

Anwser

my anwser is both will absorb and the will retain

Janelle made her solar oven by lining a piece of poster board with aluminum foil, shaping it into a cone, and placing it over a piece of black paper in an empty box. The food will go in a plastic sandwich bag on top of the black paper in the center of the cone. The image shows Janelle's cone oven.

cone shaped solar oven

Corey made his solar oven by lining the inside of a shoe box with black paper, placing a piece of plastic wrap over the bottom of the shoe box, and lining the lid of the box with aluminum foil. He used a pencil to prop the lid open at an angle. The food will go on the black paper under the plastic wrap. The image shows Corey's shoe box oven.

shoe box solar oven

Janelle's and Corey's designs both use aluminum foil, black paper, and either a plastic bag or plastic wrap so that means that they both absorb and they will retain and is u ever do it do not put it under a shave

How does energy move through a wave? 3 evidence and reasons supporting you answer.

Answers

Sound, energy and radio travel in waves


What will be the primary result of the continuation of the
geologic processes indicated at this location?
Earth's magnetic field will reverse direction.
New oceanic crust will form.
o Continental crust will be forced downward.
Earth's circumference will increase.

Answers

Answer:

B

Explanation:

new oceanic crust will form.

The formation of a new oceanic crust will be the primary result of the continuation of the geologic processes. Therefore, option (B) is correct.

What is the oceanic crust?

The oceanic crust can be described as the uppermost layer of the oceanic portion of the tectonic plates. The oceanic crust is composed of the upper oceanic crust, with pillow lavas complex, and the lower oceanic crust, made of troctolite, and ultramafic cumulates.

The oceanic crust lies above the rigid uppermost layer of the mantle. The crust and the rigid upper mantle layer together compose the oceanic lithosphere.

The oceanic crust is rich in iron and magnesium and composed of mafic rocks. It is thinner than the continental crust less than 10 Km thick but it is denser with 3.0 g/cm³ as opposed to the continental crust.

The oceanic crust displays a symmetrical pattern of positive and negative magnetic lines emanating from the mid-ocean ridge.

Learn more about the oceanic crust, here:

https://brainly.com/question/5637320

#SPJ2

How many eggs are in 3 dozen eggs? Use the dimensional analysis for this for practice.

Answers

Answer:

36 eggs

Explanation:

12 eggs in each carton

12 + 12 + 12 = 36 eggs

or 3 * 12 = 36 eggs

Hope this helps, have a nice day/night! :D

The pathogen below is a single-celled organism without a nucleus that can cause illness in a humans.

Answers

Answer:

bacteria

Explanation:

The pathogen below is a single-celled organism without a nucleus that can cause illness in a humans.

What's a suitable assumption for a simple distillation lab?​

Answers

Answer:

Must be stable and relatively insoluble in boiling water.

Explanation:

it must be stable and relatively insoluble in boiling water and a must-have vapor pressure in boiling water that is of the order atmosphere at or more compound satisfy these conditions that will generally not separate from each other but we'll be separated from everything else.

Which of the following correctly compares the radii of Na and Na+? (4 points)

Group of answer choices

Na has a smaller radius than Na+ because Na has expanded its electron cloud.

Na has a larger radius than Na+ because Na has lost its outermost energy shell.

Na has a smaller radius than Na+ because Na+ has expanded its electron cloud.

Na has a larger radius than Na+ because Na+ has lost its outermost energy shell.

Answers

Answer:

D. Na has a larger radius than Na+ because Na+ has lost its outermost energy shell.

Explanation:

The radius is larger because the diameter of Na+ is larger.

Sodium has smaller atomic  radius than sodium cation because sodium has expanded electron cloud.

What is atomic radius?

Atomic radius is defined as the  distance between outermost shell and the nucleus. Atomic radius varies across the periodic table where in groups it increases due to the fact that new shells are added on moving sown the group.

While in a period it decreases from left to right across the periodic table as electrons are added to the same shell which causes contraction of the atom.In case of comparison between an atom and a cation an atom has smaller atomic radius due to presence of electrons while in case of ions atomic radius is smaller as they have less number of electrons.

Atoms have expanded electron cloud while the electron cloud in case ions is small , the reason being the presence of large number of electrons in case of atoms and less number of electrons in case of ions.

Learn more about atomic radius,here:

https://brainly.com/question/14544878

#SPJ5

Give one example of a pure substance.

Answers

Answer:

some example includes:

gold, copper, oxygen, chlorine, diamond

Explanation:

What are the consequences of increased nitrogen and phosphorus into water systems? (Site 3).

Answers

Answer:

But when there is too much phosphorus and nitrogen into water systems, it can speed up the process of eutrophication ( increase in the concentration of minerals and nutrients, which enhances the growth of algae, which causes algal blooms). Due to this, dissolved oxygen level is declined as not enough light penetrates in the water body.

Explanation:

A wave is moving towards shore with a velocity of 5.0 MS if it’s frequency is 2.5 Herz what is the wave length

Answers

Answer:

2 m

Explanation:

The wavelength of a wave can be found by using the formula

[tex]\lambda = \frac{c}{f} \\[/tex]

where

c is the speed of the wave

f is the frequency

From the question

c = 5 m/s

f = 2.5 Hz

We have

[tex] \lambda = \frac{5}{2.5} = 2 \\ [/tex]

We have the final answer as

2 m

Hope this helps you

given that the radiusof anion a2- is 0.290 nm, what would you expect the radius of a and a2+ to be

Answers

This problem is providing the ionic radius of an anion, A²⁻ as 0.290 nm and asks for that of the cation A²⁺ in comparison to the former.

Firstly, we need to recall the concept of ionic radius, as the distance between the nucleus and the outermost electron shell of an ion. In such a way, we can have two scenarios:

1. Anions result from the gain of electrons exhibited by a nonmetal, which means they turn out bigger than the neutral atom.

2. Cations result from the loss of electrons exhibited by a metal, which means they turn out smaller than the neutral atom.

With the aforementioned, we infer that the cation A²⁺, will me smaller than the anion A²⁻, which means it will have an ionic radius smaller than 0.290 nm.

Learn more:

https://brainly.com/question/12026272https://brainly.com/question/19032815

What property determines whether an acid is a strong acid or a weak acid?
The dissociation of the ions
The total number of molecules
The pH of the acid

Answers

Answer:

the pH of the acid is the property that determines whether an acid is a strong acid or a weak acid

Can you use volume alone to predict whether an object will sink or float? Explain your answer

Answers

Answer:

Can volume alone be used to predict whether an object will sink or float? -No, you need both mass and volume to find its density to see if it can float.

How could you break down the compound calcium carbonate into the elements that make it up ?
A. by melting
B. by crushing
C. with filter
D. with chemical changes

Answers

Answer:

A. By melting

Explanation:

You can break it down by thermal decomposition which is basically melting it and thats because many metal carbonates can take part in thermal decomposition reactions.

Plz help I’m pretty confused on this question

Answers

Answer:

Bohr model A

Explanation:

It has more valance electrons therefore has more interaction between the atoms and has more electronegativity.

what is the unique characterization of a ph buffer?

Answers

it has a definite pH value

3. What must you have when you pray?​

Answers

Answer:

when you pray you will feel a peace and happiness in your heart

How much mass does 1 mol of O2 gas have?

Answers

Answer: 15.99 x2g

Explanation:

Solve the following problems to determine the empirical formula. Show the complete
factors to calculate number of moles, then the molar ration and finally the empirical formula.
1. Calcium bromide is a compound used in photography and the manufactur of fire extinguishing
materials. Analysis of a 20.00 gram sample of calcium bromide yields 4,02 grams of calcium and
15.95 grams of bromine. Calculate the number of moles of both calcium and bromide, then
determine the mole ratio to write an empirical formula for calcium bromide,

Answers

The empirical formula of the compound (calcium bromide) is CaBr₂

From the question given above, the following data were obtained:

Ca = 4.02 g

Br = 15.95 g

Empirical formula =?

Divide by their molar mass to obtain their mole

Ca = 4.02 / 40 = 0.1005 mole

Br = 15.95 / 80 = 0.199 mole

Divide by the smallest to obtain the mole ratio

Ca = 0.1005 / 0.1005 = 1

Br = 0.199 / 0.1005 = 2

Therefore, the empirical formula of calcium bromide is CaBr₂

Learn more: https://brainly.com/question/14710108

A student graphed the position of a cart during a 7-second time interval.
Which statement best describes the cart?

A.
The cart was stationary except for a short burst of acceleration of 0.5 m/s².

B.
The cart accelerated at a constant rate of approximately 0.8 m/s².

C.
The cart was stationary with a velocity of 0 m/s for the entire 7 seconds.

D.
The cart moved at a constant velocity of 0.5 m/s for the entire 7 seconds.

Answers

Hi!
Answer: D the cart moved at a constant velocity of 0.5m/s for the entire 7 seconds.

The cart accelerated at a constant rate of approximately 0.8 m/s². Option (B) is correct.

Option B is the best description based on the graphed position data during the 7-second time interval. The cart's acceleration can be determined by analyzing the shape of the position-time graph.

If the cart was stationary, the position-time graph would be a horizontal line (option C). If the cart moved at a constant velocity, the graph would be a straight line inclined at a constant angle (option D).

However, the graph likely shows a curved line, indicating changing position over time. This suggests that the cart experienced acceleration. To further confirm, calculate the acceleration:

Acceleration (a) = Δv / Δt,

where Δv is the change in velocity and Δt is the change in time.

Given the time interval is 7 seconds, and the initial and final velocities are likely different, you can calculate the average acceleration. If the average acceleration is approximately 0.8 m/s², then option B is correct.

The graphed data aligns with the scenario of constant acceleration, supporting option B.

To learn more about acceleration  here

https://brainly.com/question/2303856

#SPJ3

please help me

Type the correct answer in the box. Spell all words correctly.

What does Dalton's atomic theory propose?

A ______ causes rearrangement of atoms.​

Answers

chemical reaction :)

The difference between Physical/Chemical properties and Physical/Chemical changes

Answers

Physical changes can be reversed and chemical changes can’t be reversed. A physical property is a characteristic which can be identified without changing the substance but to identify a chemical property, you do have to change the substance.

Physical changes can be reversed and chemical changes can’t be reversed. A physical property is a characteristic which can be identified without changing the substance but to identify a chemical property, you do have to change the substance.

The same quantity of each solute is added to water. Which solution will have the greatest number of H30+ ions at equilibrium?
(1 point)
O weak acid
O strong acid
O strong base
O weak base

Answers

Answer is strong acid

( i will give you brainliest who ever answers the question first and the right answer!!!)

What do you predict would happen if you brought a negatively charged balloon next to an uncharged piece of paper?

A. The balloon will attract the paper.
B. The balloon will repel the paper.
C. Nothing will happen.
D. The paper will repel the balloon.

Answers

Answer: A

Explanation:

Answer:

B. The ballon will repel the paper

Please help!! I don’t know what to do.

Answers

Answer:

C

Explanation:

No reaction because not enough moles of silver are present for the reaction to occur.

What increases the concentration of H+ in water ?

Answers

Answer:

Acid

Explanation:

acid
Non-neutral pH readings result from dissolving acids or bases in water. An acid is a substance that increases the concentration of hydrogen ions (H+) in a solution, usually by having one of its hydrogen atoms dissociate.

The majority of which type of dancing was created in African American communities? Tap Ballet Ballroom Swing. Plz help thx <3

Answers

Answer: if it’s a multiple choice then it should be swing dances

Explanation:While the majority of swing dances began in African American communities as vernacular African American dances, some influenced swing-era dances, like Balboa, developed outside of these communities.

please anyone please this is due today!! help for a BRAINLIEST
For today's assignment, you need to balance and classify each of the following equations as synthesis, decomposition, single replacement, double replacement, or combustion.

Answers

Answer:

Explanation:

Im sorry all i know is that #3 is for sure combustion

Write a balanced chemical equation for the standard formation reaction of gaseous hydrogen bromide (hbr)

Answers

[tex]\\ \sf\longmapsto H_2+Br_2\longrightarrow HBr[/tex]

Balanced equation

[tex]\\ \sf\longmapsto H_2+Br_2\longrightarrow 2HBr[/tex]

On reactant side:-

H=2Br=2

On products side

H=2Br=2

The balanced chemical equation for the synthesis of hydrogen bromide is [tex]\rm H_2\;+\;Br_2\;\rightarrow\;2\;HBr[/tex].

What is a balanced chemical equation?

The balanced chemical equation has been given as the reaction in which the number of atoms for each element on the product and the reactant side is equal.

The HBr has been formed with the reaction of the hydrogen and the bromine. The balanced chemical equation for the reaction has been:

[tex]\rm H_2\;+\;Br_2\;\rightarrow\;2\;HBr[/tex]

Learn more about the balanced chemical equations, here;

https://brainly.com/question/8062886

Calculate the energy of a photon of light emitted from a hydrogen atom when an electron falls from level n

Answers

Answer:  E

1

E

4

=

Δ

E

=

2.18

×

10

18

J

(

1

n

2

f

1

n

2

i

)

=

2.18

×

10

18

J

(

1

1

2

1

4

2

)

=

2.18

×

10

18

J

(

15

16

)

=

 

2.04

×

10

18

J

After you obtain the energy, then you can realize that that energy has to correspond exactly to the energy of the photon that came in:

|

Δ

E

|

=

E

photon

=

h

ν

=

h

c

λ

where  

h

is Planck's constant,  

c

is the speed of light, and  

λ

is the wavelength of the incoming photon. Thus, the wavelength is:

λ

=

h

c

E

photon

=

(

6.626

×

10

34

J

s

)

(

2.998

×

10

8

m/s

)

2.04

×

10

18

J

=

9.720

×

10

8

 

m

=

 

97.20 nm

Explanation:

Other Questions
Mountain ranges often appear on the edges of continents. What theory does this support?Mountains were formed when Earths crust cooled and Earth shrank.Mountain ranges were formed when continents collided.Mountain ranges did not exist millions of years ago.Mountain ranges were formed only by glaciers. Gwen works for the US Postal Service as a delivery driver. What task might be part of Gwens job?A. inspecting meat packing companies for health violationsB. arranging the funding of a new museumC. investigating claims of illegal stock market tradingD. organizing and loading packages onto a truck What is an equation of the line that passes through the points (-6, -2) and(-3, 2)? Paris est la (1)________ de la France. Sa population est de plus de (2)______ d'habitants. Paris est divise en vingt (3)_______ . Le Louvre, un des plus grands muses du monde, est un ancien palais royal. L'uvre la plus clbre de sa collection est (4)________ . Avec plus de six millions de visiteurs par an, (5)________ est un autre monument clbre. Elle attire le plus grand nombre de visiteurs en France. Sous les rues de (6)_________ , dans (7)_______ , il y a environ (8)________ de squelettes provenant d' (9)________ de Paris et de ses environs. Pour visiter Paris, le mtro est un systme de transport efficace. Les premires entres du mtro de style Art Nouveau datent de (10)_______ . Elles sont l'uvre de l'architecte Hector Guimard. which areas of the brain monitor and adjust activities of the motor pathways? A large solar farm has 21 700 solar panels and generates 5.0 MW of power. 1.0 MW = 1.0 106 W Calculate the average power each panel produces. identify the sentence that contains a dangling modifier that could be corrected by locating the words that are describing the subject and then adding the missing subject please i can't find the answer to this riddle u guys i need help i beg 1kg red-hot iron is put into 1 L of cool water. Explain in detail what will happen to the temperatures of both objects. It is 9 kilometers from Charlie's house to the nearest mailbox. How far is it in meters?Be sure to include the correct unit in your answer. A neuron conducting an impulse from the CNS to the detrusor muscle of the urinary bladder would be classified as a(n) ____________ neuron ab when a = 2 and b = 1/2 Step 1: Choose Your Point of ViewFirst, you must choose one of the following types of persons and write your letter from their point of view:young teenage girl of the citizen classslaveboy of the citizen classyoung soldiervery wealthy person of the citizen classStep 2: Choose Your DestinationSecond, you must choose one of the following destinations:an Athenian visiting Spartaa Spartan visiting AthensStep 3: Write Your Letter To HomeYour letter must:be written from the perspective of a slave, young teenage boy or girl citizen, solider or wealthy citizenbe at least two paragraphscompare how the city you are visiting is the same or different as your home city for each of the following categories: geography, social structure, and government A non-proportional timetion is represented by y-2x.7 which table represents this function?34.A1315179121647915DBim43292330134. Count the following atomsNEED ANSWER ASAP Describe how the graph of y= 2x is the same and different from the graph of y=2x+8 If I have dual citizenship should I say yes on my college applications? 5. In 'About Russell," how does the author choose to characterize Mommy? Choose thebest answer.A kind and caring woman who fights for what's best for her children.A tough and pessimistic woman who does not support her children.A funny and vibrant woman who advocates for the importance of mental HealthO Aster but fair woman with high expectations and loose morals.6. Which of the following sentences best supports your answer to question 5?O "In my mind, I explained the chess-board as a shrine maintained by our mother.She needed to remember that she had children who once played games in herhouse.""If we complained about indiscernible ailments as children, Mommy would say,"Don't go looking for trouble, because it will find you.""Mommy, who was listening from the living room said, That ain't nothing'.""For one thing, Mommy didn't fuss too much when he got a part-time job throughthe Youth Corps, and her objections to his joining the track team at school wereclearly ceremonial."7. What is the most likely reason Williams-Garcia continues to mention the chess boardthat remained set up at her home long after the game had been played?It is during a chess game that she first realizes Russell has mental healthconcernsThe entire family wants to remember Russell as he was when he was happy andsuccessful; they do not want to acknowledge his mental illness.She wants to relive the moment when she was smart enough to beat her olderbrotherThe chessboard symbolizes Russell's intelligence, maturity, success, andhappiness How do you Find cross products with multiplication?I will give 500 pts and Brainliest! which materials are good for constructing bridges and tall buildings