Related questions with answers
To translate numbers into characters in Problem 1, you first needed to convert any given integer into an integer between 0 and 26. This is an example of what is called modular arithmetic. In particular, you are using a mod 27 system, since you are limited to the 27 integers from 0 to 26. It is possible to do arithmetic in this system. For example, 2 + 3 = 5 in mod 2, just as in regular arithmetic. But some computations in mod 27 give results that are quite different than those in integer arithmetic.
Perform the following computations in mod 27. Compare your reasoning and results with other classmates. Resolve any differences.
a. Explain why 25 + 9 = 7 in in mod 27.
b. 18 + 14 = ? in mod 27
c. 3 25 = in mod 27
d. 7 = in mod 27
e. 4 5 = in mod 27
f. -5 = in mod 27
A solution of lithium carbonate , a drug used to treat manic depression, is prepared.
(a) How many moles of are present in of the solution?
(b) How many grams of are in of the same solution?
(c) How many milliliters of the solution would be needed to supply of the solute?
(d) If the solution has a density of , what is its mass percent?
in mod because and both have a remainder of .
Recommended textbook solutions
More related questions