Convection currents in Earth's mantle are caused by the rise of hot material rising towards the crust, becoming cooler and sinki
1 answer:
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<u>Answer:</u> The heat released for the given process is -1892 kJ
<u>Explanation:</u>
The processes involved in the given problem are:
Pressure is taken as constant.
To calculate the amount of heat released at same temperature, we use the equation:
......(1)
where,
q = amount of heat released = ?
m = mass of water/ice
= latent heat of fusion or vaporization
To calculate the amount of heat released at different temperature, we use the equation:
.......(1)
where,
q = amount of heat released = ?
= specific heat capacity of medium
m = mass of water/ice
= final temperature
= initial temperature
Calculating the heat absorbed for each process:
- <u>For process 1:</u>
Converting the latent heat of fusion in J/kg, we use the conversion factor:
1 kJ = 1000 J
So,
We are given:
Putting values in equation 1, we get:
- <u>For process 2:</u>
We are given:
Putting values in equation 2, we get:
Total heat absorbed =
Total heat absorbed =
Hence, the heat released for the given process is -1892 kJ
Answer:
0.295 g Co
General Formulas and Concepts:
<u>Chemistry - Atomic Structure</u>
- Reading a Periodic Table
- Using Dimensional Analysis
- Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
Explanation:
<u>Step 1: Define</u>
3.01 × 10²¹ atoms Co
<u>Step 2: Identify Conversions</u>
Avogadro's Number
Molar Mass of Co - 58.93 g/mol
<u>Step 3: Convert</u>
<u /> = 0.294552 g Co
<u>Step 4: Check</u>
<em>We are given 3 sig figs. Follow sig fig rules and round.</em>
0.294552 g Co ≈ 0.295 g Co