Which balance should be used to a. weigh approximately 10g of NaCl

b. weigh 10.1 g of NaCl

The statement that most describes one way global winds affect weather and climate is a. polar easterlies move cool air to mid-latitudes. this is correct because the closer an area is to the equator the hotter it is, therefore if the polar winds are being moved towards the mid-latitudes it cools them down. 

1. h-br , because h oxidation number is +1 and br oxidation number is -2 so it has the most polar bond 

Ithink it could be  d. ultra (u) or  a. primary (p)