Chemistry High School

How much energy is required to melt 2 kg of copper? Use the table below and
this equation: Q = ml fusion
A. 9460kJ
B. 414kJ
C. 4730kJ
D. 125.6kJ

How Much Energy Is Required To Melt 2 Kg Of Copper? Use The Table Below Andthis Equation: Q = Ml FusionA.

Answers

Answer 1

Answer: 414 kJ

Explanation:

Answer 2

Answer: 414 kJ

Explanation: a p e x

How Much Energy Is Required To Melt 2 Kg Of Copper? Use The Table Below Andthis Equation: Q = Ml FusionA.

Related Questions

What is the volume of 80 grams of gold?​

Answers

Answer:

Volume of 80 grams of Gold

centimeter³ 4.14 milliliter 4.14

foot³ 0 oil barrel 2.6 × 10-5

Imperial gallon 0 US cup 0.02

inch³ 0.25 US fluid ounce 0.14

liter 0 US gallon 0

meter³ 4.14 × 10-6 US pint 0.01

metric cup 0.02 US quart 0

metric tablespoon 0.28 US tablespoon 0.28

metric teaspoon 0.83 US teaspoon 0.84

Which hand is negatively charged? Ο Α. OB. Oc. OD. ​

Answers

Answer:

it would be OA that is negatively charged

how many atoms of argon gas are in 137 ml container at the pressure in the container is 8.80 X 10^5 mmhg and the temperature to 794 K​

Answers

Answer:

#Ar atoms = 1.47 x 10²²

Explanation:

PV = nRT => n = PV/RT

P = 8.80 X 10⁵ mmHg =  8.80 X 10⁵ mmHg/760mmHg·atm⁻¹ = 11.58atm

V = 137ml = 0.137 Liter

n = ? moles Ar = ? moles Ar x 6.02 x 10²³ Atoms Ar/mole Ar

R = 0.08206 L·atm/mol·K

T = 794K

PV = nRT => n = PV/RT = 11.58atm·0.137L / 0.08206L·atm/mol·K·794K

=> n = 0.0243mole Ar = 0.0244mole Ar x 6.02 x 10²³ atoms Ar/mole Ar

= 1.47 x 10²² atoms Ar

Which represents the greatest mass of fluorine?

Answers

there is no image so there's no way for me to know an answer

Answer:

You need to add a image for me to answer it love

13. What is Delta G for the reaction N2(g) +O26) -- 2NO where Delta S = 0.02442 kJ/K at
303.0 K and AH = 180.7 kJ. Use Delta G = Delta H - TDelta S.
A. 173.3 kJ
B. 7.399 kJ
C.-173.3 kJ
D. 258.87 kJ

Answers

Answer:

9

Explanation:

i think

HELP ASAP!!!
can someone help be determine the formulas for reactants and products as well as balance the equation, and what type of reaction is presented!!!!
I will make you the brain list!!!

Answers

Answer: owa owa

Explanation: owa owa owa owa

Which statement describes elements?
A. Each element is made up of the same type of atoms.
B. Each element is made up of different types of atoms.
C. All elements exist only in the liquid phase.
D. All elements are solid metals.

Answers

Answer:

B

Explanation:

PLEASE HELL QUICKLY I WILL MARK BRAINLIEST

Answers

Answer: b is the answer

1. Which of these is not a natural part of

Soil is a mixture of minerals, organic matter, water and air. The minerals come from bits of broken-down
rock. Organic matter is material that is alive or used to be alive. It includes leaves, twigs, bugs and many
microscopic, or tiny, organisms like bacteria and fungi. In fact, there are more microorganisms in a handful
of soil than there are people on the planet. Soil is needed for life to exist on Earth. It contains many
nutrients that help plants grow. Then the plants provide nutrients that help animals grow

A. pebbles of different sizes
B. plastic bottle caps
C. dead worms
D. plant roots

Answers

B because plastic is not natural at all everything else is
B should be correct

2. How would type of substance affect the rate of reaction?

Answers

I really don’t know Actually I have to learn:(

neeeeeed helpppppp will give brainiest

Answers

Answer:

I think it is c

Explanation:

When water turns into water vapor it goes into the air so it must be lighter

Answer:

5

Explanation:

Copper carbonate decomposes to make _____________ oxide and _____________ dioxide

Answers

Answer:

Copper carbonate decomposes to copper oxide and carbon dioxide.

Explanation:

copper oxide carbon dioxide

1. What is the unit for electrical
conductivity?

Answers

Answer:

Siemens Per

Explanation:

S/m(Siemens per meter).

Answer:

The unit for electrical conductivity, is Siemens per meter in SI units. S/m

When a predator population increases what happens to the prey population? Increase Decrease Dies Stays the same

Answers

Answer: as the number of predators increases, more prey are captured. as a result the prey population starts to decrease.

Identify the product(s) of the following reaction:
H
2
​2
​​ CO
3
​3
​​ → H
2
​2
​​ O + CO
2
​2
​​
A
H
2
​2
​​ CO
3
​3
​​
B
H
2
​2
​​ and O
3
​3
​​
C
H
2
​2
​​ O and CO
2
​2
​​
D
O and O
2
​2
​​

Answers

Answer:

H20

Explanation:

means water but might not help

Calculate the net force of the problem below and determine the direction it will travel

Answers

Answer:

Where is the Net force u were supoose to put below we cant anwser with nothing being displayed

Explanation:

Answer: need more info

Explanation:

CHEMISTRY HELP USING GAS LAWS

A 75.0 mL sample of sulfur dioxide gas exerts 200. mm Hg pressure at 30.0°C. What pressure in mmHg does it exert at 35.0°C if the volume expands to 80.0 mL? ​

Answers

Answer:

is there choices to choose from u can provide me?

If a scale floated by and an astronaut stood on it, what would the scale say?

1.0kg
2.1/6 normal weight
3.9.8 m/s2
4.1/6 normal mass

Answers

Can you show a picture instead so I can see

I am a celestial body that does not produce light. I orbit a planet

Answers

A moon would be the correct answer.

Provide a brief description of how the respiratory system works

Answers

Answer:

The lungs and respiratory system allow oxygen in the air to be taken into the body, while also letting the body get rid of carbon dioxide in the air breathed out. When you breathe in, the diaphragm moves downward toward the abdomen, and the rib muscles pull the ribs upward and outward.

Explanation:

How is the division of animal/human cells different from the division of plant cells?

Answers

Animal cell is big and human cell are very small, it can’t even be seen by are naked eye :)

How many mm Hg is 9 atms?

Answers

6840.00 mmHg

(Please mark me brainliest! thank you in advance!!)

What is a mixture? Plz help

Answers

Answer:

a substance made by mixing other substances together.

Explanation:

Answer:

a mixture is different things put together

Explanation:

What is the mass of zinc required to combine with 0.5 mol of chlorine to produce zinc chloride,ZnCI[subscript 2]?

[Relative atomic mass : Zn = 65]
​

Answers

Answer:

16.25g

Explanation:

Equation for the reaction = Zn + 2Cl = ZnCl2

1 molecule of Zn = 2 molecule of Cl

x mole of Zn = 0.5mol of Cl

mole of Zn = 0.25mol

mass of Zn = 0.25 * 65 = 16.25g

The mass of zinc required to combine with 0.5 mol of chlorine to produce zinc chloride is 16.25g.

What is mass?

Mass is the quantity of matter in a physical body.

The reaction is Zn + 2Cl = ZnCl₂

The ratio of moles of Zn and Cl

1 : 2

m, mol of Zn is equal to 0.5 mol of Cl

Moles of Zn = 0.25 mol

Multiply the mole of Zn and the relative atomic mass of Zn

Mass of Zn = 0.25 × 65 = 16.25 g.

Thus, the mass of zinc is 16.25 g.

Learn more about mass

https://brainly.com/question/19694949

What is the boiling point (in °C) of a 0.195 m
aqueous solution of K2S?
Enter your rounded answer with
3 decimal places.
Kb for water = 0.512 °C/m


Please hurry

Answers

Answer:100.3

Explanation:

Which of the following is an example of a parasite?
a. A flea that bites an animal and sucks its blood to survive.

b. An orchid flower that sits on a tree branch

c. The bacteria that live in human intestines and help humans digest things.

d. An Egyptian plover that cleans a crocodile's teeth.

hmm helpo?

Answers

c
a parasite is an organism that lives inside a host and benefits from taking away nutrients at the others expense

Answer:

a sorry if im wrong

Explanation:

9.31*10^3=_*10^5

please if you could explain it as well, i’m so confused and struggling

Answers

0.0931
9.31 x 10^3 is 9310
So 0.0931 x 10^5 equals to 9310.
When the raised power increases shift the decimal to the left hand side. If the raised power decreases then shift it to the right hand side.
Hope this helps

Given the following equation:

8 Fe + S8 ---> 8 FeS

What mass of iron is needed to react with 106.0 grams of sulfur?

Answers

Answer27.9 gFeS

Explanation:

Note: This is for 16.0 Grams of Sulfer

Where do fronts always form?
Fronts form over water and move inland.
Fronts form at boundaries between air masses.
Front form at high altitudes and descend toward Earth's surface.
Fronts form around locations with severe weather.

Answers

D. ... with severe weather

how can i solve this question? can you pls help me ​

Answers

Answer:

what's the question ?

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