Answer:
C6H12O6 + 6O2 - 6CO2 + 6H2O + ENERGY
Explanation:
Let me know if I'm right
Answer:
0,727 mL
Explanation:
We add x mL of the 95% ethanol solution to 1 mL: C1=0,95 and V1=x mL
As we already had 1 ml of solution, now we'll have (1 + x) mL of the 40% ethanol solution: C2=0,4 and V2=1+X mL
Now, using the C1V1=C2V2 equation:
(0,95)x=0,4(x+1)
0,95x=0,4x + 0,4
0,95x-0,4x=0,4
0,55x=0,4
x=0,4/0,55=0,727 mL
Therefore, we need to add 0,727 mL of a 95% ethanol solution to the enzyme solution to obtain a final concentration of 40% ethanol.
Density is calculated using the following rule:
density = mass / volume
therefore:
mass = density * volume
mass of Hg = 13.6 * 60.2 = 818.72 grams
From the periodic table:
molar mass of Hg = 200.59 grams
number of moles = mass / molar mass
number of moles of Hg = 818.72 / 200.59 = 4.08 moles
each mole contains Avogadro's number of atoms.
Therefore,
number of atoms in the given sample = 4.08 * 6.022 * 10^23
= 2.456976 * 10^24 atoms
Answer:
D. 6.3 x 10-5 mol/L NaOH
Explanation:
Alizarin yellow is an indicator that is yellow when pH < 10.1. In the same way, thymol blue is blue when pH > 9
That means the pH of the solution is between 9 - 10.1
Any acid as HCl could have a pH of these.
The solution of 3.2x10⁻⁴M NaOH has a pH of:
pOH = -log[OH-] = 3.49
pH = 14-pOH = 10.51. The pH of the solution is not 10.5
Now, the solution of 6.3x10⁻⁵M NaOH has a pH:
pOH = -log[OH-] = 4.2
pH = 14-pOH = 9.8
The pH of the solution could be 9.8. Right option is:
<h3>D. 6.3 x 10-5 mol/L NaOH</h3>
Answer:
68.22656
Explanation:
I think this is the answer.
Hope it's correct!
