<h2>Let us explain about green house gases</h2>
Explanation:
Green house effect
It can be explained as :
- The sun emit radiations that consist of infra red rays , ultra violet rays and visible light .
- The infra red rays (responsible for heating ) when come from sun , it travels through atmosphere and reaches earth surface .
- On striking the earth surface , it gets reflected and reflected infra red ray has greater wavelength .
- Then this reflected rays moves back through atmosphere .
- On doing so , they encounter certain gas molecules like carbon dioxide , methane etc .
- This gases absorb these rays and do not let them to escape through them .
- As a result, they get trapped .
- As we have already mention that they cause heating effect , due to this property they raise the temperature of atmosphere leading global warming .
Covalent bonds do not involve electron transfer because in covalent bonds, the electrons are shared between the atoms to form the molecule rather than being transferred to form ions as it is in the case of ionic bonds.<span />
Answer:
Because there is trapped air inside the cube of ice
Explanation:
when water freezes it has water molecules and air molecules and as it freezes they move slower and slower until it freezes and they become stuck
Answer:
The mass of the reactants compared with the mass of the products should be the same if the reactants are in stoichiometric amounts.
Explanation:
In this question, they ask about chemical reactions and the comparison of the mass of reactants and products. Firstly, it is necessary to introduce the mass conservation principle.
Mass conservation principle mentions that in a chemical reaction, the total mass of reactants is equal to the total mass of products (if the reaction is fully developed). It means mass is not created or destroyed, only transforms from reactants to products.
For example, the mass of sodium plus the mass of chlorine that reactswith the sodium equals the mass of the product sodium chloride.Because atoms are only rearranged in a chemical reaction, there mustbe the same number of sodium atoms and chlorine atoms in both thereactants and products.
Finally, we can conclude that The mass of the reactants compared with the mass of the products should be the same if the reactants are in stoichiometric amounts.
