Answer:
2.11 molecules of CO₂
Explanation:
Given data:
Mass of CO₂ = 15.2 g
Molecules of CO₂ = ?
Solution:
Number of moles of CO₂:
Number of moles = mass/molar mass
Number of moles = 15.2 g/ 44 g/mol
Number of moles = 0.35 mol
Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ molecules
0.35 mol × 6.022 × 10²³ molecules / 1 mol
2.11 molecules of CO₂
Answer:
Reactants
Explanation:
Does it have a reaction?
Answer:
Explanation:
I need more information to answer this question and a better figure.
1. What is the frequency of the NMR machine?
Possible solution:
1. coupling constant Jab (in ppm) is given by
\nu_{a} - \nu_{b} = 4J_{ab}
2. Jab (in ppm) * Frequency of machine in (MHz)/106 is Jab in Hz
3. for cis vicinal Hydrogen Jab = 6-14 Hz
4. for trans vicinal Hydrogens Jab = 11-18 Hz
Now, considering 2 doublets are centered at 7.14 and 7.28 ppm , it gives
7.14 -7.28 = 4 Jab
thus, Jab = 0.07 ppm
Now if we consider a 100 MHz machine,
Jab = 7 Hz , thus indicating cis product
but if machine is 300 MHz
then Jab = 21 Hz , thus indicating a trans product.
But, most probably I feel it is a trans product. I hope it helps.
Answer:
metallic bonds are defined as those in which metals share valence electrons for example when sodium metallically bonds with itself each atom is sharing the electrons in the third orbital with up to eight other atoms the same thing happens with magnetism or other metals metallically bond to themselves.