How many liters of a 15% NaCl solution should be mixed with 1 L of a 20% NaCl solution to obtain a 16% NaCl solution?
What will be an ideal response?
Let x = the amount of 15% NaCL solution.
0.15(x) + 0.20(1) = 0.16(x + 1)
0.15x + 0.20 = 0.16x + 0.16
0.04 = 0.01x
x = 4 L
You might also like to view...
Answer the following statement(s) true (T) or false (F)
1. An appropriate exercise duration depends primarily on exercise frequency. 2. Lubricating fluid is spread through the joints during warm-up. 3. Men build larger muscles than women do through weight training because men have higher levels of testosterone. 4. In a weight training program, a heavy weight and low number of repetitions builds muscular strength. 5. In a program to build flexibility, each stretch should be held for two minutes.
Answer the following statement(s) true (T) or false (F)
1. One who fluctuates regularly between emotional highs and lows shows strength in the emotional dimension of wellness. 2. Medical care has no place in the wellness lifestyle. 3. It is possible to be physically disabled and live a wellness lifestyle. 4. African American and Hispanic women have higher obesity rates than any other group of women. 5. A key ingredient in wellness living is having a lot of money and nearby medical centers.
The seminal vesicles secrete fluid called:
A) sputum. B) discharge. C) semen. D) urine.
Marijuana affects which neurotransmitters?
a. Acetylcholine c. Dopamine b. Norepinephrine d. All of the above