A lab is mixing saline solution for a hospital. Saline solution is salt water at the same salt concentration as blood or tears, so it can be safely used in medical applications. Saline solution is normally 0.9% salt by volume. The lab originally mixed 50 L of solution but their tests showed that it was only 0.32% saline concentration. a) To fix the solution, the lab techs open a water spigot and drip 0. 4 L/min into the solution. They also add 0.01 L/min of salt to the solution. How long (in minutes) must they add to the solution until it reaches the correct concentration?
b) If the water and salt taps were allowed to continuously run, what would the final
concentration of the saline solution be if left alone for a long period of time?
c) Now suppose they must mix the saline solution, but it has to be done within 30 minutes. The only way to mix it faster is to increase the rate at which salt is added. What does the rate of salt addition have to be to reach 0.9% saline in 30 minutes?

the reason why your question keeps getting deleted because this is not a school related question : )

i will answer your question though.

i never tried church's

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

ask for details followreport by buttfacelily 2 minutes ago

answers

rauschg

rauschg · hand

know the answer? add it here!

step-by-step explanation:

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: