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PSYCHO15rus [73]
2 years ago
8

A sample of metal has a mass of 5. 2 g and absorbs 20. 0 j of energy as it is heated from 30. 0°c to 40. 0°c. What is the identi

ty of the metal?
Chemistry
1 answer:
kiruha [24]2 years ago
6 0

The identity of the metal is copper.

<h3>What is specific heat?</h3>

The amount of energy needed to raise the temperature of one gram of a substance by one degree Celsius.

Using the formula of specific heat

H = mcdT

Where, H = Heat absorbed

m = mass of the metal

c = specific heat capacity of the metal

dT = temperature change

Putting the values in the equation

20 J = 0.0052 Kg × c × ( 40.0°C - 30.0°C)

c = 20 J/0.0052 Kg × ( 40.0°C - 30.0°C)

c = 385 JKg-1°C-1

Thus, the metal is copper.

Learn more about specific heat

brainly.com/question/11297584

#SPJ4

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anyanavicka [17]

Answer:

Friction is a force that slows down moving objects.

Explanation:

i got you

5 0
4 years ago
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At 25◦C and atmospheric pressure the volume change of mixing of binary liquid mixtures of species 1 and 2 is given by)2545(2121x
lions [1.4K]

The question is incomplete. The complete question is:

At 25◦C and atmospheric pressure the volume change of mixing of binary liquid mixtures of species 1 and 2 is given by the equation:

ΔV = x1x2(45x1 + 25x2)

Where ΔV is  in cm3-mol-1. At these conditions, the molar volumes of pure liquid 1 and 2 are V1= 110 and V2= 90 cm3-mol-1. Determine the partial molar volumes 1VE and 2VE in a mixture containing 40 mole percent of specie 1.

Answer:

1VE = 117.92 cm³.mol⁻¹, 2VE = 97.92 cm³.mol⁻¹

Explanation:

In the equation given, x represents the molar fraction of each substance, thus x1 = 0.4 and x2 = 0.6. Because of the mixture, the molar partial volume of each substance will change by a same amount, which will be:

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ΔV = 7.92 cm³.mol⁻¹

1VE - V1 = 7.92

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1VE = 117.92 cm³.mol⁻¹

2VE - V2 = 7.92

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3 0
3 years ago
How to convert 250 in scientific notation
cricket20 [7]
In scientific notation, a number is less than ten but more than one.

Move the decimal point from 0, 250.000 <- this is the same as 250 to between 2 and 5.

I had to move two spaces.

2.5^2

I hope this helps!
~kaikers
4 0
3 years ago
The pH scale for acids and bases ranges from _____.
Elza [17]
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pH + pOH = 14

So pH = 14 – pOH and pOH = 14 – pH 

8 0
3 years ago
Read 2 more answers
How many grams of Ba(OH)2 will dissolve in 100g of water at 75 degree Celsius
netineya [11]
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Hope this could help. Have a nice day.
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