I personally, would remove " Lamp oil is a very polar substance " And replace it with what the article you wrote, was about. For example, lets say you wrote about why people love ice cream, you could have the ending sentence say. " And that's why I wrote about why people love ice cream" Or something along those lines. I'd write a few more facts about it first, don't just have one sentence saying a fact without any supporting detail, hope this helps! :)
Answer:
d = 54.4 g/cm³
Explanation:
Given data:
Radius of sphere = 135.9 pm
Mass = 5.71 ×10⁻²² g
Volume = 4/3 ×πr³
Density = ?
Solution:
Volume = 4/3 ×πr³
Volume = 4/3×3.14× (135.9×10⁻¹²m)³
Volume = 4.2 × (135.9×10⁻¹²m)³
Volume = 1.05 ×10⁻²⁹m³
Volume = 1.05 ×10⁻²⁹×10⁶ cm³
Volume = 1.05 ×10⁻²³cm³
Density:
d = m/v
d = 5.71 ×10⁻²² g/1.05 ×10⁻²³cm³
d = 54.4 g/cm³
Answer:
if your eyes are exposed to a hazardous chemical you should use the eye wash station. The first few seconds after exposure to a hazardous chemical are critical.
Molarity (M) = moles of solute (mol) / Volume of the solution (L)
Molarity of the given solution = 6.00 M
Volume taken to prepare 2.00 M = 175 mL
moles in 175 mL = 6.00 M x 0.175 L
= 1.05 mol
Hence, moles of HCl in 2.00 M solution = 1.05 mol
By applying formula,
2.00 M = 1.05 mol / Volume
Volume = 0.525 L
Hence, volume needed to prepare the solution = 0.525 L
Volume of 6.00 M solution + volume of water = 0.525 L
Hence, the volume of water needed to add = 0.525 L - 0.175 mL
= 0.350 L = 350 mL