Basaltic rocks contain approximately 45 to 52 percent silica. about how many kilograms of silica would you predict to be in a 92-kg boulder of basalt?

To find the answer, we can use the percentage above to find the amount of silica in 92kg of boulder of basalt.

If the Basalt is with 45 percent of silica:

92×45%
=41.4kg

If the Basalt is with 52 percent of silica:

92×52%
=47.84kg

We can then take the average to predict the amount of silica by using the lowest and highest approximation:

(41.4+47.84)÷2
=89.25÷2
=44.62kg

Therefore,the answer is 44.62kg.

Hope it helps!

The investiture controversy began as a power struggle between pope gregory vii (1072–85) and henry iv, holy roman emperor (1056–1106).[2] a brief but significant struggle over investiture also occurred between henry i of england and pope paschal ii in the years 1103 to 1107, and the issue played a minor role in the struggles between church and state in france, as well.by undercutting the imperial power established by the salian emperors, the controversy led to nearly 50 years of civil war in germany, and the triumph of the great dukes and abbots. imperial power was finally re-established under the hohenstaufen dynasty. historian norman cantor: