The pollution in the cities darkened basically everything, meaning the lighter colored moths were more visible, and were targeted. The dark ones, as a rule, lived whereas the light ones did not. This is an example of evolution.
The rate of reaction of uncatalyzed reactions is mainly dependent on two factors:
1) Concentration of reactants
The greater the concentration of reactants that is present, the faster the reaction will take place
2) Temperature
Due to increased collisions of reactant molecules, elevating the temperature of a reaction mixture increases the rate of reaction
I think the answer is 2/5 or 0.4
Answer:
2HNO3 + Ca(OH)2 ===> Ca(NO3)2 + 2H2O
Explanation:
This a neutralisation reaction. The first thing to note is that this type of reaction forms salt and water.
Note that the formula of water is H2O. So write this at the right hand side.
==> H2O
Next note that the salt should contain the acid radical (NO3) and the metallic part of the base (Ca) written well following the rule for writing chemical equation; thus
==> Ca(NO3)2 + H2O
The next step is to write the reactants at the right hand side of the equation;
HNO3 + Ca(OH)2 ==> Ca(NO3)2 + H2O
The final step is to count the number of atoms in each side of the equation to make sure they are equal and balanced.
In the above equation, H atoms are three at the left hand side add 2 to to H- containig compound on both side as to balance up. Thus
2HNO3 + Ca(OH)2 ===> Ca(NO3)2 + 2H2O
The equation 2HNO3 + Ca(OH)2 ===> Ca(NO3)2 + 2H2O is balance.
Answer:
based on this ball and stick model how many oxygen atoms are there in a milecule of 2 propanol
Explanation:
