1.) how many grams is 1.09 moles of Mg3N2? 2.) How many moles are in 7.55 g of KBr?
3.) what is the mass, in grams, of 0.48 moles of Na2O?
4.) how many moles is 14 grams of SrCI2?

1. 110 grams

2.0.06 moles

3. 129.1 grams

4. 0.08 moles

Explanation:

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.