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expeople1 [14]
4 years ago
8

Examples of two substances being mixed and the ​

Chemistry
1 answer:
yKpoI14uk [10]4 years ago
6 0

Answer:

ocean water liquid and steel solid

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The temperature of a 95.4 g piece of Cu increases from 25.0 °C to 48.0 °C when the Cu absorbs 849 J of heat. What is the specifc
melisa1 [442]
<h3>Answer:</h3>

0.387 J/g°C

<h3>Explanation:</h3>
  • To calculate the amount of heat absorbed or released by a substance we need to know its mass, change in temperature and its specific heat capacity.
  • Then to get quantity of heat absorbed or lost we multiply mass by specific heat capacity and change in temperature.
  • That is, Q = mcΔT

in our question we are given;

Mass of copper, m as 95.4 g

Initial temperature = 25 °C

Final temperature = 48 °C

Thus, change in temperature, ΔT = 23°C

Quantity of heat absorbed, Q as 849 J

We are required to calculate the specific heat capacity of copper

Rearranging the formula we get

c = Q ÷ mΔT

Therefore,

Specific heat capacity, c = 849 J ÷ (95.4 g × 23°C)

                                        = 0.3869 J/g°C

                                        = 0.387 J/g°C

Therefore, the specific heat capacity of copper is 0.387 J/g°C

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3 years ago
What is 30% NaOH test​
pogonyaev

Sodium hydroxide solution 30% CAS 1310-73- 2 Suprapur® - Find MSDS or SDS, a COA, data sheets and more information.

CAS number:

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A synthetically-produced narcotic medication, drug, or agent similar to the opiate morphine, but not derived from opium; used to
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A synthetically-produced narcotic medication, drug, or agent similar to the opiate morphine, but not derived from opium; used to relieve pain
Yes
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3 years ago
Explain why elements with less protons require fewer neutrons to be stable compared to elements with more protons.​
Solnce55 [7]

Answer:

The reason for this is because of the repulsive force between protons: The stronger the repulsion force, the more neutrons are needed to stabilize the nuclei.

Explanation:

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3 years ago
CAN SOMEBODY HELP ME WITH THIS QUESTION PLEASE !! ?
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hope it helps you......

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