Answer:
0.5 M
Explanation:
First we have to start with the <u>molarity equation</u>:
We need to know the<u> amount of moles and the litters</u>.
If we have 100 mL we can convert this value to “L”, so:
Now we can continue with the moles, for this we have to know the <u>formula of sodium sulfate</u> 
, with this formula we can <u>calculate the molar mass</u> if we know the atomic mass of each atom on the formula (Na: 23 g/mol, S: 32 g/mol, O: 16 g/mol). We have to multiply each atomic mass by the amount of atoms in the formula, so:
In other words:
Now we can <u>calculate the moles</u>:
Finally, we can <u>calculate the molarity:</u>
I hope it helps!
Answer:
2.95 * 10^23 atoms
Explanation:
The number of atoms in a mole is always equal to <u>Avogadro's constant</u>, which is <u>6.02214076×10²³ mol⁻¹</u>.
To find the number of atoms in 0.490 moles of barium, multiply it with <u>Avogadro's constant</u>:
0.490 mol * 6.02214076×10²³ mol⁻¹ ≈ 2.9508 * 10^23
Convert to SigFigs (if necessary):
2.95 * 10^23
Answer:
17.2 minutes is the value of the turnover number.
Explanation:
Using Michaelis-Menten equation:
![V = V_{max}\times \frac{[S]}{ (Km + [S])}](https://tex.z-dn.net/?f=V%20%3D%20V_%7Bmax%7D%5Ctimes%20%5Cfrac%7B%5BS%5D%7D%7B%20%28Km%20%2B%20%5BS%5D%29%7D)
Where :
= max rate velocity
[S] = substrate concentration
= Michaelis-Menten constant
V = reaction rate
= catalytic rate constant
= initial enzyme concentration
We have :
is the rate is obtained when all enzyme is bonded to the substrate. is termed as the turnover number.
17.2 minutes is the value of the turnover number.
Answer:
6 protons, 6 neutrons, and 6 electrons.
Explanation:
