How many moles of MgCO3 are present in 252.939 grams of MgCO3?

3

Explanation

because

As temperature increases, the GRAIN SIZE of marble will also increases. Marble is a non foliated metamorphic rock. Metamorphic rocks are rocks that had change forms as a result of heat and pressure. Temperature and pressure have diverse effects on metamorphic rocks, but for marble, as the temperature increases, the grain size of the rock also increases.