Molar mass H₂O = 18.0 g/mol and O₂ = 32.0 g/mol
2 H₂O --------> O₂ + H₂
(2* 18.0 g ) H₂O ----------> 32 g O₂
72.0 g H₂O ----------------> ?
mass of O₂ = 72.0 * 32 / 36
mass of O₂ = 2304 / 36
= 64 g of O₂
hope this helps!
Answer:
Substances have more kinetic energy in the gas state than in the Solid state.
Gas have more kinetic energy as it flows from here and there.It flows really fast as it have less space between the molecules
Solids have less Kinetic energy as it is hard and can't flow so easily like gas . It has tightly packed molecules
Answer : Nuclear fusion plays an important role in making elements that are heavier than helium.
Explanation : In the given attachment it is clearly observed that nuclear fusion reactions are playing a vital role in making the small elements fuse together to form a higher element as a product. This is observed in those elements which are heavier than helium. The atoms of the elements fuse together and make a larger atomic molecule which is the sum of both the elemental masses.
Answer:
Explanation:
a) photosynthesis
b) Substances used: water, sun, gas and nutrients. Products: glucose and flowers
c) there will be no sunlight or no open environment
Answer:
The correct answer is - option 1. the molarity of H changes by one order of magnitude.
Explanation:
pH is dependent on the concentration of H+ not on the volume of H+ or the salt content. The molarity of H+ changes by one order of magnitude with the change in pH of 1.0 unit that can be an increase or decrease in molar concentration by one order of magnitude or factor of 10.
Order of magnitude refers to the factor of ten or powers of ten. A change in the order is equal to the change of the exponent changes by ± 1