Answer:
2.74 M
Explanation:
Given data:
Mass of sodium chloride = 80.0 g
Volume of water = 500.0 mL
Molarity of solution = ?
Solution:
Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.
Formula:
Molarity = number of moles of solute / L of solution
Now we will convert the mL into L.
500.0 mL× 1 L /1000 mL = 0.5 L
In next step we will calculate the number of moles of sodium chloride.
Number of moles = mass/molar mass
Number of moles = 80.0 g/ 58.4 g/mol
Number of moles = 1.37 mol
Molarity:
M = 1.37 mol/ 0.5 L
M = 2.74 M
Answer:
1,081.1 units of heparin should be given to 298 lb person.
Explanation:
We are given:
Weight of the person = 298 lb = 135.143 kg
Conversion factor used:
1 lb = 0.4535 kg
Number of unit of heparin to be given in an hour = 8.0 units/kg
Number of units given to the patient weighing 135.143 kg :
1,081.1 units of heparin should be given to 298 lb person.
Answer:Amplitude in a longitudinal wave
Explanation:Wave amplitude of a longitudinal wave is the distance between particles of the medium where it is compressed by the wave. Wave amplitude is determined by the energy of the disturbance that causes the wave. A wave caused by a disturbance with more energy has greater amplitude.
Answer:
This is a tricky one because this person was a massive part of your life, and now they're not. You're probably feeling hurt, confused, lonely and angry all at once. I have been here too and it's horrible so my thoughts are with you! For me, I had to make peace with it. It sounds silly but unfortunately there's not much we can do to try and win them back. If someone can go from being your best friend to all of a sudden hating you then they probably don't care about you as much as they should, and you're probably better off without them :) Seek people who actually care for you, and want to spend time with you. Friendships come and go, and as much as it hurts, if you can accept this and cherish your real friendships (the ones where you can go years without seeing eachother, but are there like a shot when you need them) then the pain should diminish. Good luck :)
Explanation:
I think it’s “Removed from”
