Volume of solute = 25 mL
Volume of solvent = 150 mL
% = ( volume of solute / volume of solvent ) x 100
% = ( 25 / 150 ) x 100
% = 0,166 x 100
= 16.6 % v/v
hope this helps!
q = mCΔT
The correct specific heat capacity of water is <em>4.187 kJ/(kg.K)</em>.
ΔT = q/mC = 87 kJ/[648.00 kg x 4.187 kJ/(kg.K)] = 87 kJ/(2713 kJ/K) = 0.032 K
Tf = Ti + ΔT = 298 K + 0.032 K = 298.032 K
Answer:
The entropy change in the environment is 3.62x10²⁶.
Explanation:
The entropy change can be calculated using the following equation:
![\Delta S = \frac{Q}{k_{B}}(\frac{1}{T_{f}} - \frac{1}{T_{i}})](https://tex.z-dn.net/?f=%5CDelta%20S%20%3D%20%5Cfrac%7BQ%7D%7Bk_%7BB%7D%7D%28%5Cfrac%7B1%7D%7BT_%7Bf%7D%7D%20-%20%5Cfrac%7B1%7D%7BT_%7Bi%7D%7D%29)
Where:
Q: is the energy transferred = 5.0 MJ
: is the Boltzmann constant = 1.38x10⁻²³ J/K
: is the initial temperature = 1000 K
: is the final temperature = 500 K
Hence, the entropy change is:
Therefore, the entropy change in the environment is 3.62x10²⁶.
I hope it helps you!
Answer:
Alkane
Explanation:
Alkenes have CH in their condensed formulas and alkynes have C in their condensed formulas. There are only CH3 and CH2 so it's an alkane.
Answer:
<u>A. Jupiter , Saturn , Uranus and Neptune are mainly composed of gases more that solids and liquids.</u>
Explanation:
- The four planets- Jupiter , Saturn , Uranus and Neptune are called the outer planets of the solar system.
- <em>These planets are relativitely larger than the earth and other small planets and since these are primarily made up of gases , the are also called "</em><u><em>GAS GIANTS </em></u><em>"</em>
This is the largest planet in the solar system . There is not much solid surface at the Jupiter at all ! It is mainly made up of Hydrogen , some helium and other elements. The outer layer of the planet is made up of gas.
It is the second largest planet. This is also mainly composed of hydrogen and helium. But there is also ice of ammonia and water.
Uranus is a frozen , gaseous planet with a molten core. It contains 83% Hydrogen , 15% Helium and 2% methane which makes it gaseous enough
Neptune , like Uranus has an internal structure that is differentiated between a rocky core consisting of silicates and metals. It's atmosphere consists of Hydrogen, Helium and Methane.