An unknown metal with a mass of 585.6 grams, changes temperature from 46.5°C to 84.5°C when it absorbs 795J of energy. Find specific heat of the unknown metal.

Answers

Answer 1

Answer: So the answer would be um I dont

know the answer right now but message me later on and I will help

Explanation: The equation that relates heat  (q) to specific heat (c_p) , mass (m), and temperature change  (Delta{T}) is shown below.

q=c_p times m times Delta{T}  The heat that is either absorbed or released is measured in joules. The mass is measured in grams. The change in temperature is given by Delta{T}= T_f - T_i , where  T_f is the final temperature and  T_i is the initial temperature. Step 1: List the known quantities and plan the problem .

Known

heat = q = 134 J

mass =  m = 15.0 g

Delta{text{T}} = 62.7^circ text{C} - 24.0^circ text{C} = 38.7^circ text{C}

Unknown

c_p text{of cadmium}= ? text{J}/ text{g}^circ text{C}

The specific heat equation can be rearranged to solve for the specific heat.

Step 2: Solve .

c_p=frac{q}{m times Delta{T}}=frac{134 text{ J}}{15.0 text{ g} times 38.7^circ text{C}}=0.231 text{ J/g}^circ text{C}

Step 3: Think about your result .

The specific heat of cadmium, a metal, is fairly close to the specific heats of other metals. The result has three significant figures.

Since most specific heats are known, they can be used to determine the final temperature attained by a substance when it is either heated or cooled. Suppose that a 60.0 g sample of water at 23.52°C was cooled by the removal of 813 J of heat. The change in temperature can be calculated using the specific heat equation.

Delta{T}=frac{q}{c_p times m}=frac{813 text{ J}}{4.18 text{ J/g}^circ text{C} times 60.0 text{ g}}=3.24^circ text{C}

Since the water was being cooled, the temperature decreases. The final temperature is:

T_f=23.52^circ text{C} - 3.24^circ text{C}=20.28^circ text{C}


Related Questions

what element has the same number valence electrons as strontium?​

Answers

Answer:

Beryllium

Explanation:

They are in the same group

IF YOU ANSWER CORRECTLY U WILL RECIVE BRAINLEIST AND 10 pts! AsAp! thank youuu u will make my day by answering CoRrEcTlY!

Answers

Answer:

6 and 8

Explanation:

how does light emitted from a neon sign differ from sunlight?

Answers

Answer:

Neon emits only a specific color

Explanation:

While sunlight emits all the colors neon light emit a single color

What type of energy is transmitted from the Sun to Earth through space?

Answers

Answer:

solar energy

Explanation:

Kate wrote the steps of the carbon cycle to describe how carbon is cycled through specific organisms. The steps are in random order.

1 - The rabbit decomposes.
2 - The rabbit eats the carrot plant.
3 - The carrot plant takes in carbon dioxide from the air during photosynthesis.
4 - Carbon compounds are returned to the soil.

Which lists the steps in order?

2, 3, 1, 4
3, 2, 1, 4
3, 4, 2, 1
2, 4, 3, 1

Answers

Answer:

3, 2, 1, 4

Further explanation:

The process of photosynthesis is the process of converting carbon dioxide and water into energy in the form of carbohydrates using sunlight. Usually done by plants that have leafy za called chlorophyll.

Carbohydrates themselves are formed from the C-carbon, H-hydrogen and O-oxygen components

Rabbit food is carrots that contain carbohydrates, which are part of the photosynthesis process

3. The carrot plant takes in carbon dioxide from the air during photosynthesis.

Reaction

6CO₂ + 6H₂O ⇒ C₆H₁₂O₆ + 6O₂

2. The rabbit eats the carrot plant.

Rabbits meet their carbohydrate source for energy by eating carrots

1. The rabbit decomposes.

Rabbits in time will experience a process of decomposition

4 - Carbon compounds are returned to the soil.

The carbon content in rabbits will also be decomposed into the soil again

Answer:

3,2,1,4

Explanation:

2 The polar structure of water allows it to act as a solvent for many substances. Which of the
following statements best explains why water is considered polar?
F The unequal sharing of electrons results in the water molecule having a slightly negative
charge near its oxygen atoms and a slightly positive charge near its hydrogen atom.
G The equal sharing of electrons by the hydrogen and oxygen atoms form weak bonds that are
easily broken during dissociation.
H The unequal sharing of electrons results in the water molecule having a slightly positive
charge near its oxygen atoms and a slightly negative charge near its hydrogen atom.
The equal sharing of electrons by the hydrogen and oxygen atoms create a molecule that is
neutrally charged

Answers

Answer:

Explanation:

F is the answer, this is because oxygen is slightly delta negative and hydrogen is slightly delta positive. Which creates the permanent dipole that polar molecules have.

I will give you Brainly if you awser correct if your gonna awser for points pl put I don’t know

Answers

Answer:

C

Explanation:

The answer is B. Trinitrogen Pentaoxide

Why are iron nails attracted to magnets, but not attracted to other iron nails?

Answers


They prefer the path of least resistance due to flux density. With a magnet, the lines of force are peacefully lying with the iron nail

Which of the following is true about chemical reactions?

They are accompanied by changes in energy.
They form new substances with new properties.
both A and B
neither A nor B

Answers

B) they form new substances with new properties.

Answer:

B : THEY FORM NEW SUBSTANCES WITH NEW PROPERTIES .

___CO----> ___C+___O2


what's the answer?!!

Answers

Answer:

2CO >>> 2C + O2

........

Which of the following colors is/are produced when white light from sun is passed through a prism?

Answers

Answer:

Options d.

Explanation:

As white light from the sun is passed through a prism, it is separated into colors - red, violet, yellow, blue, green, orange, and indigo.

Dispersion is the process of the separation of visible light into its different component colors. The light waves are refracted as they enter the prism.

So, option d. is correct.

Please help I really need but this time I'm fr I don't have much time ill mark brainliest

Answers

Answer:

i fi am not wrong the correct answer is  D

Explanation:

Answer:

The answer is D

Explanation:

More height= more potential energy

if freshwater is added to a region, what happens to seawater density and salinity?

Answers

Answer:

The density and salinity goes down.

Explanation:

Salt water is denser than pure water.  As fresh water is added to salt water the concentration of salt goes down.  Since salinity is the amount of salt in the water that would go down with the concentration.  This would also mean that the density goes down since there is less salt per unit of volume which makes it so that there is less mass per unit of volume.  The formula for density is d=m/v so as the mass goes down per unit of volume so does the density.

Let me know if anything is unclear in the comments and we can try to work through it.

Condensation point and freezing point of argon in KELVIN.

Answers

Answer:

Condensation: 423.3 K

Freezing: 83.96 K

(this is all i could figure out :) hope it helps)

Arrange the following elements in order from lowest to highest first ionization energy : AI , Ar, Cs, Na .

Answers

Answer:francium

The first ionization energy varies in a predictable way across the periodic table. The ionization energy decreases from top to bottom in groups, and increases from left to right across a period. Thus, helium has the largest first ionization energy, while francium has one of the lowest.

Explanation:

The least measure of the energy needed to remove the loosely bound electron of an atom or a molecule is called ionization energy.

The correct order from lowest to highest first ionization energy is:

Cs

Na

Al

Ar

This can be explained as:

(Cs) Caesium will have the lowest energy because in the periodic table it comes in the same group as (Na) sodium.

In the group, from top to bottom the ionization energy decreases.

(Al) aluminium and (Ar) argon lies in the same period.

In a period from left to right the ionization energy increases.

Therefore, Cesium will have the least ionization energy as compared to sodium, aluminium and argon.

To know more about ionization energy follow the link:

https://brainly.com/question/2571722

Which pair has identical electron configurations?
S2- and CI
K+ and CI1-
S and Ar
Cl1- and K

Answers

Identical electron configurations : K⁺ and Cl⁻

Further explanation  

In an atom, there are levels of energy in the shell and sub-shell  

This energy level is expressed in the form of electron configurations.  

Charging electrons in the sub-shell uses the following sequence:  

1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p⁶, 5s², 4d¹⁰, 5p⁶, 6s², etc.  

S²⁻ and CI

S²⁻ : [Ne] 3s²3p⁶

Cl : [Ne] 3s²3p⁵

K⁺ and CI⁻

K⁺ : 1s² 2s² 2p⁶ 3s² 3p⁶

Cl⁻ : 1s² 2s² 2p⁶ 3s²3p⁶

S and Ar

S :[Ne] 3s²3p⁴

Ar : [Ne] 3s²3p⁶

Cl⁻ and K

Cl⁻ : 1s² 2s² 2p⁶ 3s²3p⁶

K : 1s² 2s² 2p⁶ 3s² 3p⁶4s¹

Calculate the speed for a car that went a distance of 125
kilometers in 2 hours tiine.

Answers

Answer:

62.5 km/hr

Explanation:

Speed can be found by dividing the distance by the time.

s=d/t

We know the car travelled a distance of 125 kilometers in 2 hours. Therefore:

• d=125 km

• t= 2 hr

Substitute the values into the formula.

s= 125 km/ 2 hr

Divide

s= 62.5 km/ hr

The speed of the car is 62.5 kilometers per hour.

PPLLLSSSSSSS HELLLPPP!!!!! What is runoff?

Answers

Answer:

runoff is he draining away of water (or substances carried in it) from the surface of an area of land, a building or structure, etc.

Explanation:

look up the definition on the internet

How many grams of calcium are in 2.65 g of CaCO3?

Answers

Answer:

2.56

Explanation:

In a short paragraph, explain one thing you've learned from the course this year.

Answers

Answer:

ive learned about the chart , ive learned about the coolest chemicle reactions and how. the can change colors , ive also learned that chenistrey is all around us since the beginning of life ,and how liquid can turn solid

Explanation:

Electromagnetic radiation at its maximum wavelength is _____.

A. Radio waves
B. Infrared
C. X rays
D. None of the above

Answers

Answer:

Option A) Radio waves.

Explanation:

Have a great day.

5. True or False: A growth rate can be only positive and negative, it can never be zero.....
A. True
B. False

Answers

Answer:

True

Explanation:

plzzzz help ASAP !!!!​

Answers

Answer:

sorry can't

Explanation:

Answer:

Try to get a solution from Google

In water acids form ___.
A. Hydrogen gas
B. Hydrogen ions
C. Hydrogen atoms
D. Hydroxide ions

Answers

Answer:

Hydrogen ions

Explanation: acids will produce hydrogen ions, I asked my teacher. Please tell me if we are wrong.

Hydrogen ions

Just because it is.

balancing equations help!!

Answers

1) N2+3H2–> 2NH3
2) 2KClO3–> 2KCl+3O2
3) 2NaCl+F2–> 2NaF+Cl2
4)Pb(OH)2+ 2HCl—> 2H2O+PbCl2
5) 2AlBr3+ 3K2SO4–> 6KBr+Al2(SO4)3
6) is already balanced

If you have any questions just let me know :)

I dont have heat i have
elecromagnetic,
gravitacianal,
nucler and mechanical which one is it

Answers

Answer:

Your answer would be mechanical.

Explanation:

Hope you do good BRAINLYISETTT

When light pases through a prisim,white light will be separated into different colors. which statment best explains this observation?​

Answers

Answer:

It's B

Explanation:

The classic rainbow is made of certain colors, so If a white light passed through a glass prism [and only glass] the rainbow would show because of the colors bending [the naked eye can't see that 0-0]

Also, you know the sky is blue right??  The color blue in that prism when the light shined over was the shortest and wavy color. each color has it's own wave. blue is just the shortest and waviest one.

Which model best represents a pattern?
Antenne UHF
Chaum
RTG
Master
Antenne
grand gain
DAN
REMS
RAD
SAM
Chemin

Answers

Is it grand gain? Sorry, i’m not too good at this.

if u know that answer i will mark has brainliest​

Answers

Answer:

The clear liquid is less dense than the black liquid, which is why it floats on top. If the volume were different, you would visually see more clear liquid than black and vice versa.

The clear liquid is less dense than the black liquid

Answer:

A. The clear liquid is less dense than the black liquid

Explanation:

Since the clear liquid since on top of the black one it's density is less. Whatever liquid has a higher density will sink to the bottom of the flask.

Which is greater 50 degree celcius or 50 degree fahrenheit?with solution plz.....​

Answers

Answer: 50 degrees Celsius is hotter than 50 degrees F. 50 degrees Celsius is half way between freezing and boiling

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