Answer:
the direction of the motion us constantly changing during motion over any close path, not only circular
For the given 200 g of 95% ethanol solution, ethanol is 190g and water is 10g. We determine the number of moles per component.
ethanol: (190 g ethanol) / (46 g/mole) = 4.13 moles
water: (10 g water)/(18 g/mole) = 0.55 moles
Total moles of the solution is 4.68 moles
Mole fraction of water: = 0.55 moles/4.68 moles = 0.117
Answer:
Cobalt (III) Iodide
General Formulas and Concepts:
<u>Chemistry - Compounds</u>
- Reading a Periodic Table
- Writing Compounds
- Naming Compounds
Explanation:
<u>Step 1: Define</u>
CoI₃
<u>Step 2: Identify</u>
Co is a Transition Metal, has either a charge of 2+ or 3+
I is a Halogen, has a charge of 1-
<u>Step 3: Write name</u>
We need to balance the charges, and in order to do that, we must have a Co³⁺
Cobalt (III) Iodide
There is one significant figure as a significant figure is any number other than 0
if it was 120 then it would be 2
Answer: 2 grams
Explanation:
chemical formula of C6H:
C6H
relative atomic mass of
C:12
H:1
C6:72
H1:12
relative formula mass of
C6H1=73
molar mass of glucose:
73g
the molar mass is the mass of one mole of a substance.
in
26.2g
of C6H there are
26.2 divide by 73g moles present.
there are 0.358 or 35.8*10-1
I gram of NH3 is 17.03052
2 grams of NH3 is 35
