Answer: -
Substance A is carbon dioxide and Substance B is oxygen.
Explanation: -
Photosynthesis reaction involves the process of conversion of light energy of the sun into chemical energy by the green chlorophyll found in plants leaves.
The chemical equation for the process is
6 CO₂ +6 H₂O → C₆H₁₂O₆ + 6O₂
As we can see Carbon dioxide CO₂ reacts with water H₂O to form glucose. Oxygen is the gaseous product formed.
Thus Substance A is carbon dioxide and Substance B is oxygen.
Answer:
Carbohydrates
Explanation:
Carbohydrates are organic compounds that contain only carbon, hydrogen, and oxygen. They are the most common of the four major types of organic compounds. There are thousands of different carbohydrates, but they all consist of one or smaller units called monosaccharides.
Answer:
The answer is -224C
Explanation:
When a temperature of 49K is converted into Degrees Celsius, it turns into -224C
Answer:
There will be one Al3+ ion.
There will be 3 NO3- ions
Explanation:
Dissociation equation:
Al(NO₃)₃ → Al³⁺ + 3NO₃¹⁻
When aluminium nitrate dissociate it produces one silver ion (Al³⁺) and three (NO₃¹⁻) ions.
Properties of Al(NO₃)₃:
It is inorganic compound having molecular mass 169.87 g/mol.
It is white odor less compound.
Its density is 4.35 g/mL.
Its melting and boiling points are 120°C and 440°C.
It is soluble in water.
It is sued to treat infections.
It is used in the photographic films.
It s toxic and must be handled with great care.
Answer:
The mass of silver block = 73.95 g
Explanation:
Given,
For water:
Mass = 100.0 g
Initial temperature = 24.8 °C
Final temperature = 26.2 °C
Specific heat of water = 4.184 J/g°C
For silver:
Mass = x g
Initial temperature = 59.4 °C
Final temperature = 26.2 °C
Specific heat of water = 0.2386 J/g°C
Heat gain by water = Heat lost by silver
Thus,
Where, negative sign signifies heat loss
Or,
So, 
<u>Hence, the mass of silver block = 73.95 g</u>
