Answer:
G° would be negative when temperatures are above 691K
Explanation:
G° could be found as:
G° = H° - TS°
As <em>H° = 98.8 kJ and S° = 143 J/K</em>; G° would be negative when H° < TS°, that is:
H° < TS°
98800J < 143 J/K ₓ T
691K < T
That means <em>G° would be negative when temperatures are above 691K</em>
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I hope it helps!
Sodium is a metal that belongs to group 1 of the periodic table.
<h3>What is my favorite element?</h3>
My favorite element is sodium. Sodium is found in group one of the periodic table. The element is univalent and also forms univalent positive ions. Like every other metal, sodium is able to react with dilute acids to liberate hydrogen gas.
Sodium is a light metal and is known to react with mercury to form the sodium mercury amalgam which is obtained during the electrolysis of sodium chloride. All of the compounds that are formed by sodium are ionic in nature. However the hydrides of sodium are unstable.
Sodium is highly reactive thus it must not be exposed to air since it could ignite spontaneously in air. As such, sodium must be stored under paraffin oil. All the compounds of sodium are ionic in nature.
Learn more about sodium:brainly.com/question/24010534
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Answer:
c = 0.38 J/(g-°C)
Explanation:
Given that,
Mass of copper, m = 5 g
Initial temperature,
Final temperature,
When copper cools, it looses 23.6 J of heat. We need to find the specific heat of copper. The heat lost is given by :
c is specific heat
Hence, the correct option is d.
Answer:
1.Nucleus 2.Cytoplasm 3. Vacuoles 4.chloroplasts 5. Body Cell 6. Cell Wall 7. Membrane
Explanation:
- The nucleus is the control center of the cell.
- The jelly-like substance inside the cell is called as cytoplasm.
- They are found in both animal and plant cells but are much larger in plant cells.
- In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll.
- The rest of the air is mostly nitrogen (79%). Your body cells use the oxygen you breathe to get energy from the food you eat. This process is called cellular respiration. During cellular respiration the cell uses oxygen to break down sugar.
- Plant cells have a cell wall, as well as a cell membrane. In plants, the cell wall surrounds the cell membrane.