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WINSTONCH [101]
2 years ago
12

If different masses of water are heated to the same temperature, which sample will absorb more energy? Base your argument on the

definition of heat and what you learned from the experiment. Here is the definition of heat: heat is seen as a form of energy arising from the random motion of the molecules of bodies, which may be transferred by conduction, convection, or radiation.
Please help me do this problem! I will give 100 points!
Chemistry
1 answer:
MArishka [77]2 years ago
5 0

Answer:

Heat, energy that is transferred from one body to another as the result of a difference in temperature.

Explanation:

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3 years ago
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A buffer solution is composed of 7.50 mol of acid and 4.75 mol of the conjugate base. If the pKa of the acid is 4.90 , what is t
Mamont248 [21]

Answer:

The correct answer is: pH= 4.70

Explanation:

We use the <em>Henderson-Hasselbach equation</em> in order to calculate the pH of a buffer solution:

pH= pKa + log   \frac{ [conjugate base]}{[acid]}

Given:

pKa= 4.90

[conjugate base]= 4.75 mol

[acid]= 7.50 mol

We calculate pH as follows:

pH = 4.90 + log (4.75 mol/7.50 mol) = 4.90 + (-0.20) = 4.70

7 0
2 years ago
a metal object has a mass of 9.0g and a volume of 1.5ml. what is the density of the object? density= mass/volume​
weeeeeb [17]

The density of the metal object=6.0\frac{g}{m l}

Given:

Volume of the metal object=1.5ml

Mass of the metal object=9.0g

To find:

Density of the metal object

<u>Step by Step Explanation: </u>

Solution:

According to the formula, Density of the metal object can be calculated as

\rho=\frac{m}{v}

Where, m=mass of the metal object

\rho =density of the metal object

v=volume of the metal object

We know the values of v=1.5ml and m=9.0g

Substitute these values in the above equation we get

\rho=\frac{m}{v}

\rho=9.0/1.5

=6.0\frac{g}{m l}

Result:

Thus the density of the metal object is 6.0\frac{g}{m l}

4 0
3 years ago
VERY EASY HELP ASAP!! THANK YOU!!
vesna_86 [32]

Answer:

9 g/cm³

Explanation:

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Physical properties of glass bottle
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Glass is a hard substance that consists of sand, soda ash and limestone. When these substances are heated together, their molecules bond to form the substance we know as glass. We use glass for many purposes, and glass bottles have become a popular method of storage, as well as being used in chemical experiments.

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3 years ago
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