The conversion factor is added to the original given unit so that you can end up with the final unit. Basically, the conversion unit does not change the value because the factor is just equal to 1. You just manipulate the units by cancelling them.
Among the given choices, the fraction which is equal to 1 is 10⁻³ g/ 1 mg, because there are 1,000 mg per 1 g. In reverse, that would be 10⁻³ of a gram.
The equation of the reaction for the formation lithium oxide from lithium and oxygen is given as:
<h3>What is the equation for the formation of Lithium oxide?</h3>
Lithium oxide is a compound formed from the reaction between lithium and oxygen.
The equation for the chemical reaction is given below:
Therefore, the reaction between lithium and oxygen yields lithium oxide.
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Answer
Hi,
Ranking these compounds in order of decreasing acid strength applying periodic trend will be; HI, HCL, H2S; LiH
Explanation
When ranking these compounds according their acid strength we use the acid association constant (pKa) of each compound at room temperature and observer them.When the constant is lower, the more the acidic the compound is.In the above case, comparing the pKa values;
HI= -10
HCL= -8
H2S=7
LiH=42
Hope this helps!
Number of grams in 1 mole = 6.23 * 10^23
Now, in 15, it would be: 15 / 6.23 * 10^23 = 2.5 * 10^-24 moles (approx.)
In short, Your Answer would be Option C
Hope this helps!