2 Mg + O2 --> 2MgO What is the greatest amount of MgO (in moles) that can be made with 7.8 moles of Mg and 4.7 moles of O2? Next, convert 4.7mol O2 to mol MgO. How many moles of MgO are produced with 4.7 mol of O2? (Answer a numerical value only) *

1 a

2 d

3 a

4 c

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.

there is none because earth is stationary and flat.

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them