What are the answer choices???
Explanation:
1 g = 1000 mg
1 liter = 1000 ml
In sol. 1000 ml, there is NaCl 8500 mg
In sol. 15 ml, there is NaCl 8500/1000× 15 = 127.5 mg
B). 2 Hours
Explanation if the older brother can run 6 MPH and it’s takes him a hour and twenty minutes you automatically can say it’s at least 6 miles then you have to see how many he can run in 20 minutes which is roughly 2 miles so that would mean he run for 8 miles if the younger brother can run 4 MPH then you just have to add that by 2 too see how long it will take to run 8
Answer B, because clear ,pure substances makes more sense then others, i searched it all up and came up b, please give brainliest!! good luck
Answer:
Electricity is made at a generating station by huge generators. The current is sent through transformers to increase the voltage to push the power long distances. The electrical charge goes through high-voltage transmission lines that stretch across the country.