HELP ME FAST How many moles are in 325 g of MgCO3?

0.161 moles
0.269 moles
1.98 moles
3.85 moles

Which statement describes how phase changes can be diagrammed as a substance is heated? the phase is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the phase is on the x-axis. the time is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the time is on the x-axis.

What happens to the atomic radius when an elctron is lost

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland