A chemical formula shows the kinds and numbers of <u>atoms</u> in the smallest representative unit of a substance.
<u>Explanation:</u>
In chemistry, a formula unit is the empirical formula of "ionic or covalent network solid compound" that is used as an independent entity for "stoichiometric calculations". This formula is a representation of a molecule that uses chemical symbols.
The unit is the lowest whole number ratio of ions represented in an ionic compound. It gives the numbers of atoms representing the "smallest representative" unit of a substance. The number of atoms also tells us about the chemical and physical properties of the compound formed.
Answer:
What are we supposed to do
Explanation:
Answer:
K₂Cr₂O₇(s) ⇒ 2 K⁺(aq) + Cr₂O₇²⁻(aq)
Explanation:
Potassium dichromate (K₂Cr₂O₇) is a strong electrolyte, that is, when dissolved in water (the medium), it dissociates in cation potassium (K⁺) and anion dichromate (Cr₂O₇²⁻). The balanced dissociation equation is:
K₂Cr₂O₇(s) ⇒ 2 K⁺(aq) + Cr₂O₇²⁻(aq)
Answer:
The correct answer is option e. "be glycosylated".
Explanation:
Proteins can either enter to the Golgi apparatus facing the endoplasmic reticulum (cis-Golgi proteins) or facing the plasma membrane on the cell (trans-Golgi proteins). The difference between trans-Golgi proteins and cis-Golgi proteins is that the latter are glycosylated. Glycosylation takes place in the rough endoplasmic reticulum, therefore proteins that enter trough this organelle, most likely undergo this post-translation modification.
Substituting the values into the equation:
2.7 x 10⁻⁵ = k(0.1)²
k = 2.7 x 10⁻³ M⁻¹s⁻¹