You want to make 100 mL of a .1 M sodium chloride solution. You have a 1 M stock sodium chloride solution on hand already that you need to mix with water to obtain this .1 M solution. A) How many mL of stock solution do you need?
B) how many mL of water do you need?

10 mL of stock solution and 90 mL water

Explanation: 1M NaCl = 1mol/L

to make 0.1M solution needs 0.1mol/L

= 0.01mol per 100mL

0.01 mol is in 10 mL of 1M solution

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

six grader is what i am ssorry