It's B, because a negative charged Ion is an anion. And since it's 1- ,one valence electron is been added to H. So it has 2 valence electrons.
The first step is to use the formula from Boyle's Law.
[(351 L)(1.0 atm)]/(181L) = 1.94 atm.
To determine the depth of the location where the diver was working, 1.94 is multiplied by 10. Therefore, the location of the underwater archaeological site is 19.4 meters below the surface.
The limiting reactant is the substance which gets used up completely, before the other reactants get consumed in the reaction. Once the system runs out of the limiting reactant, the reaction cannot continue to make products.
Answer:
1.89 × 10⁻³ M
Explanation:
In a UV Visible Spectrometer, we can determine the concentration of a species using Beer-Lambert law.
A = ε × l × c
where,
- c: concentration of the species
We can find [CoCl₄²⁻] from this expression.
A = ε × l × c
c = A / ε × l
c = 1.147 / 409.7 M⁻¹ cm⁻¹ × 1.48 cm
c = 1.89 × 10⁻³ M
Answer:
1.4063 moles of oxygen are required
Explanation:
Based on the chemical equation:
4Al + 3O₂ → 2Al₂O₃
<em>4 moles of aluminium react with 3 moles of oxygen.</em>
<em />
To solve this question we need to convert the moles of aluminium to moles of oxygen using the chemical reaction:
1.875 moles Al * (3 moles O₂ / 4 moles Al) =
<h3>1.4063 moles of oxygen are required</h3>