Answer:
Photosynthesis is Endothermic reaction.
Explanation:
Photosynthesis:
It is the process in which in the presence of sun light and chlorophyll by using carbon dioxide and water plants produce the oxygen and glucose.
Word equation:
Carbon dioxide + water + energy → glucose + oxygen
Chemical equation:
6H₂O + 6CO₂ + energy → C₆H₁₂O₆ + 6O₂
it is known from balanced chemical equation that 6 moles of carbon dioxide react with the six moles of water and created one mole of glucose and six mole of oxygen.
water is supplied through the roots, carbon dioxide collected through stomata and sun light is capture by chloroplast.
The energy required for this reaction is taken from sun.
While other given reactions are exothermic reactions.
2)
Answer:
Exothermic
Explanation:
Exothermic reaction:
The type of reactions in which energy is released are called exothermic reactions.
In this type of reaction energy needed to break the bonds are less than the energy released during the bond formation.
For example:
When acid and base are react heat is produced. The flask in which reaction is proceed is warm when we touch it. It indicate the exothermic reaction.
Chemical equation:
NaOH + HCl → NaCl + H₂O + heat
3)
Answer:
Heat is released
Explanation:
Exothermic reaction:
The type of reactions in which energy is released are called exothermic reactions.
In this type of reaction energy needed to break the bonds are less than the energy released during the bond formation.
For example:
Chemical equation:
C + O₂ → CO₂
ΔH = -393 Kj/mol
it can be written as,
C + O₂ → CO₂ + 393 Kj/mol
From our environment. I'm a vegan, so I get my food from plants, nuts, and grains. Other people might eat meat, so they get their food from plants and animals.
If this helps, can you mark me as brainliest please?
Barium Cynanide is the compound
The reaction is,
H2S + I2 --------------> 2 HI +S
Molar weight of H2S = 34 g per mol
Molar weight of HI =128 g per mol
Molar weight of I2 =254 g per mol
Moles of H2S in 49.2 g = 49.2 /34 mol = 1.447 mol
So according to stoichiometry of the reaction, number of I2 mols needed
= 1.447 mol
The mass of I2 needed = 1.447 mol x 254 g
