Volume percent = Volume of solute
----------------------------------
Volume of the solution
2 Volume of the solute
------- = ------------------------------
100 250
Volume of the solute = 2 x 250
------------
100
= 5 mL.
Hope this helps!
Answer. Chemical formula of ghee: (C17H33 Coo)3 C3H5 • Chemical Reaction: (C17H31Coo)3 C3H5 + 3H2 (C17H33 Coo)3 C3H5
Answer is 2 : 1.
<em>Explanation;</em>
Reaction between NH₃ and O₂ can give N₂ and H₂O as products. The balanced reaction equation is
4NH₃ + 3O₂ → 2N₂ + 6H₂O
According to the balanced equation, 4 molecules of NH₃ react with 2 molecules of N₂.
Hence, the stoichiometric ratio between NH₃ and N₂ is 2 : 1.
Stoichiometric ratio = molar ratio
Hence, molar ratio between NH₃ and N₂ is 2 : 1. This can be written as
moles of NH₃ / moles of N₂ = 2 / 1
Answer:
The "2" applies only to the sodium, and sugar is a substance
Explanation:
The amount of atoms in an element are written using small letters after the element they refer to.
Firstly, Ionic solids can't conduct electricity, this is because of the close packed structure partly caused by the strong attraction between the delocalised electrons and the positively charged ions in the lattice structure (the close packed structure is also partially due to the fact it is in a solid state, it's not just solely to the ionic bonds). As the structure is so close packed, the ions are not free to move so electricity cannot be conducted.
Secondly, high melting and boiling points (counts as a physical property as it can be observed) as there is high attraction between the oppositely charged entities in the ionic lattice, added to by the sheer number of ionic bonds and resulting electrostatic attraction in a lattice (aka strong and plentiful ionic bonds) mean lots of energy is needed to overcome these bonds in order to change state.
Thirdly, they are usually hard and brittle as the lattice is a huge structure that is held rigidly in place by the strong electrostatic attraction arising from the ionic bonds.