Engineering, 16.04.2021 19:00 dani3112
When visiting your grandmother, you decide to take a fresh warm bath and wash your hair. However, grandmother lives in Maine, where the tap water is very soft, having a hardness of only 20 mg/L as CaCO3. In order to have an effective shampoo, you want the hardness to be about 80 mg/L as CaCO3. But, you notice that grandma regularly buys bottled mineral water that has the following concentration of major ions, and you have the crazy idea of using the mineral water to adjust the hardness:
Ions mmol/L
Ca2+ 5
Mg2+ 0
Na+ 1
Cl- 1
HCO3- 10
SO42- 0
Required:
If the total volume of the bath tub is 1m3, what volumes of tap and bottled water must you mix together to have your ideal shampoo? If bottled water costs $1 per liter, what bill is grandma going to expect for a bath?
Answers: 1
Engineering, 04.07.2019 08:10
Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed
Answers: 1
Engineering, 04.07.2019 12:10
On a average work day more than work place firs are reorted
Answers: 1
Engineering, 04.07.2019 16:10
The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.
Answers: 1
Engineering, 04.07.2019 16:10
An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)
Answers: 2
When visiting your grandmother, you decide to take a fresh warm bath and wash your hair. However, gr...
Mathematics, 26.07.2019 21:40
Biology, 26.07.2019 21:40
Mathematics, 26.07.2019 21:40
English, 26.07.2019 21:40
Mathematics, 26.07.2019 21:40
Biology, 26.07.2019 21:40
Chemistry, 26.07.2019 21:40
Physics, 26.07.2019 21:40
History, 26.07.2019 21:40