b.The reaction cannot occur because water is a reactant.
c.Copper has a higher activity than hydrogen and cannot replace it.
d.The reaction proceeds too slowly to create products.
The reason why H₂O +Cu does not proceed to a product is that
copper has a lower activity than hydrogen and cannot replace it (answer A)
Explanation
Replacement reaction is type of a reaction in which element react with compound and take place of another element in that compound.
That is the more reactive element replaces the less reactive element from it's compound.
Since H₂ is more reactive than Cu in reactivity series therefore no reaction occur between H₂O +Cu since Cu cannot replace H₂ from its compound.
Answer:
Exergonic process
Explanation:
A reaction in which the change in free energy is negative is what is termed an exergonic reaction. Energy is released into the surrounding medium in this type of reaction.
When pellets of NaoH is dissolved in water, energy in the form of heat is released into the medium and the solution gets hot.
Hence, the dissolution of NaoH in water is said to be exergonic.
a. 1.07 x 10^-1 atoms
b. 6.47 x 10^2 atoms
c. 3.35 x 10^22 atoms
d. 3.61 x 10^24 atoms
8. How many atoms are present in 2.0 x 10^6 mol of carbon?
a. 3.3 x 10^-18 atoms
b. 4.0 x 10^-17 atoms
c. 1.0 x 10^29 atoms
d. 1.2 x 10^30 atoms
9. what mass is present in sample of AgNO3 containing 3.14 x 10^19 formula units?
a. 5.21 x 10^-5 g
b. 8.86 x 10^-3 g
c. 1.13 x 10^2 g
d. 1.92 x 10^4 g
10. How many molecules are present in 36.6 L of SO2 gas at STP?
a. 1.36 x 10^-21 molecules
b. 1.63 x 10^0 molecules
c. 1.54 x 10^22 molecules
d. 9.84 x 10^23 molecules
TRUE
FALSE
B. nuclear separation.
C. nuclear fission.
D. nuclear fusion.
Answer is: C. nuclear fission.
Nuclear fission is a nuclear reaction or a radioactive decay where nucleus of atom split into smaller ligher nuclei.
Nuclear fission is exothermic reaction which release large amounts of energy (electromagnetic radiation or as kinetic energy, which heat reactors where fission reaction take place).
Answer: The process of splitting of an atom into two lighter atoms is called is called nuclear fission.
Explanation:
There are two types of nuclear decay reactions:
Hence, the process of splitting of an atom into two lighter atoms is called is called nuclear fission.