Answer:
The concentration of the dilute sample will be 0.361 g/ml
Explanation:
If a solution is diluted into 1:10 ratio then the amount of solute of that solution will be decreased by 10 times.
The initial concentration of the stock solution was 3.61g/ml but when the solution is diluted in 1:10 ratio the solute concentration is also decreased by 10 times.SO at present the solute concentration becomes 3.61/10=0.361 g/ml.
A general internet site because there isn't any backing for the information provided
We'll make this a bit simpler.
1 mile = 1.60934km
90.0 million miles.
9.0 x 10^7 miles * (1.60934km / 1 mile) * (1000m / 1km) = 7.70x10^79 m
Answer:4.920 X10^-22J
Explanation:
Energy of infrared radiation = hc/λ
where h=plank's constant=6.626X 10^-34js
c= speed of light = 3.0 x 10^8ms⁻¹
wavelength λ= 4.04x 10^-4m
E = 6.626X 10^-34js X 3.0 X 10^8 ms⁻¹/ 4.04 X 10^-4m
=4.920 X10^-22J
Answer:
50 g NaOH
General Formulas and Concepts:
<u>Chemistry - Solutions</u>
- Reading a Periodic Table
- Using Dimensional Analysis
- Molarity = moles of solute / liters of solution
Explanation:
<u>Step 1: Define</u>
0.500 L
2.50 M NaOH
x moles of solute
<u>Step 2: Define conversions</u>
Molar Mass of Na - 22.99 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of H - 1.01 g/mol
Molar Mass of NaOH - 22.99 + 16.00 + 1.01 = 40 g/mol
<u>Step 3: Find moles of solute</u>
2.50 M NaOH = x moles NaOH / 0.500 L
x = 1.25 moles NaOH
<u>Step 4: Convert</u>
<u /> = 50 g NaOH
<u>Step 5: Check</u>
<em>We are given 3 sig figs. Since our final answer has 2 sigs, there is no need to round.</em>