The mass of Li2O : 104.58 grams
<h3>
Further explanation
</h3>
Given
3.5 moles of Li2O
Required
The mass
Solution
The mole is the number of particles contained in a substance
1 mol = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass
mol(n) = mass(m) : MW(molecular weight)
Input the value :
mass = mol x MW Li2O
mass = 3.5 mol x 29,88 g/mol
mass = 104.58 g grams
mass = 2.957 g
Answer:
<u>Effect of adding heat to the reactions</u>
1. Shift the Reaction <em><u>backward</u></em> in First graph.
2.Shift the Reaction <em><u>forward</u></em> in second graph.
<u>Other ways to change the rate of a chemical reaction are :</u>
1. Addition of Catalyst
2.Increase in surface area
3. Increase in concentration of reactant.
Explanation:
Graph 1
It shows that the reaction is exothermic in which heat is released.
According to Le-Chatelier's rule : If temperature is increased
(heat is added) in an exothermic reaction , it will shift in backward direction.
Graph 2.
It shows that the reaction is endothermic in which heat is absorbed (taken)
According to Le-Chatelier's rule : If temperature is increased
(heat is added) in an endothermic reaction , it will shift in forward direction.
The answer is powder because if it was a small crystal it the molecules are tightly compact same with the small cube but there less compact, powder is loose and more spread out and easier to mix so it would react the fastest
Answer: fusion
Explanation:
Nuclear fission : It is defined as a process which involves the conversion of a heavier nuclei (which is an unstable nuclei) into two or more small nuclei (which is a stable nuclei) along with release of high amounts of energy.
Example: The energy released from the process of nuclear fission which is converted into electrical energy that is used in our homes and factories.
Nuclear fusion : It is defined as a process which involves the conversion of two small nuclei to form a heavy nuclei along with release of energy.
Example: It occurs in sun and stars where the isotopes of hydrogen called as Tritium and Deuterium combine together to form a neutron and a helium atom.