Answer:
2.209g/mL
Explanation:
The density of a substance is defined as the ratio between its mass (Generally in grams) and its volume (Generally in mililiters).
The volume dispensed in a buret is: Final volume - Initial volume. In the problem:
45.91mL - 35.00mL = <em>10.91mL</em>
As the mass of solution dispensed is <em>24.10g</em>, density is:
24.10g / 10.91mL = <em>2.209g/mL</em>
I hope it helps!
I got 9.25527 for the pKa
<span>then for the Henderson-Hasselbalch equation: </span>
<span>9.00=9.25527+log(.600/acid) </span>
10^(-.25527)=(.600/acid)correct to this line. Then
0.5556 = 0.6/acid and
acid = 0.6/0.5556 = 1.08 which is the reciprocal of your number)
<span>.5556/.600M=acid </span>
<span>acid=.925925...M </span>
<span>(.925925)*2.10L= Molarity</span>
The answer is 0.8830 mol C3H8.
Here's how the answer was generated:
We do know that all the choices are in moles, in that case, we divide the 38.95 g of propane (C3H8) by the molar mass which is:
C = 12.01
H = 1.01
C3H8 = 3 * 12.01 + 8 * 1.01 = 44.11
Divide 38.95 g by 44.11 g/mol and the answer will be 0.8830 mol C3H8.
Answer:
Element Symbol Atomic Mass # of Atoms Mass Percent
Chlorine Cl 35.453 2 29.670%
Calcium Ca 40.078 1 16.770%
Oxygen O 15.9994 8 53.559%
Explanation:
Answer:
True
Explanation:
because it never stops doing it