Answer:
Explanation:
You are not really helped by what is hold the liquid. Beakers and cylinders come on a lot of sizes. I hate to be crabby about things like that, but you really need to be aware that the question is slightly flawed (not your fault).
The beaker, you'd be like to get 1 sig digit. You have to be awfully careful about claiming more. So the and is 50 mL, but that mL is a guess and the 50 is not totally accurate, but what would you say the second digit is? 48 or 47? You don't really know. Maybe even 49.
The graduated cylinder is a little better. Read the bottom of the meniscus (the bottom of the 1/2 bubble). I think you can get 2 sig digs., so the answer is 36 mL. But everything also depends on what you have been told.
Answer:
.259 g
Explanation:
PV = nRT
n = PV / RT
= .986 x 0.144 / .082 x 293.6
= .005897 moles
= .005897 x 44 g
= .259 g
Season it well! (: Even salt can make a ton of a difference, honestly! Just try not to add too much of anything if it's meant to be healthy and you're just trying to lose weight!
Good luck, rockstar!
We should indicate first and foremost the assumption of ideal gas behavior so that we can use the ideal gas equation written below:
PV = nRT
For this problem,let's solve for V. Rearranging the equation,
V = nRT/P
Substituting the values,
V = (1 mol)(0.0821 L-atm/mol-K)(30 + 273 K)/1.2 atm
<em>V = 20.73 L of N₂ gas</em>
Answer:
molarity of a solution = 1.192 M
Explanation:
- molarity [=] mol compound / L solution
∴ mass NaCl = 195 g
∴ molar mass NaCl = 58.44 g/mol
⇒ moles NaCl = (195 g)*(mol/58.44 g) = 3.34 mol
∴ Volumen solution = 2.8 L
⇒ Molarity NaCl solution = (3.34 mol)/(2.8 L) = 1.192 M
