Answer: The density of the liquid is 
Explanation:
Density is defined as the mass contained per unit volume.
Given : Mass of the unknown liquid = 938 grams
Volume of the unknown liquid = 
Putting in the values we get:
Thus the density of the liquid is and the liquid is dimethyl sulfoxide.
Answer:
Manganese (II) ion, Mn²⁺
Explanation:
Hello,
In this case, given the overall reaction:
Thus, since manganese (II) ion, Mn²⁺ is both at the reactant and products, we infer it is catalyst, since catalysts are firstly consumed but finally regenerated once the reaction has gone to completion. Moreover, since inner steps are needed to obtain it, we can infer that the given rate law corresponds to the slowest step that is related with the initial collisions between Ce⁴⁺ and Mn²⁺
Best regards.
First, you will have to write out and balance the equation, so:
Because we’re looking at a single element reacting with an acid, we know that the reaction must be a single replacement.
Mg + HCl —-> MgCl2 + H2
We use H2, because hydrogen can only exist by itself when covalently bonded to itself, in a diatomic state.
Mg has an oxidation state of +2, while Cl has an oxidation state of -1. Therefore, you need 2 Cl to cancel the charge fully.
Now it needs to be balanced, so you get:
Mg + 2HCl —-> MgCl2 + H2
Now we have molar ratios to do our conversions
So we’ll use stoichiometry to find the theoretical yield for both reactants, and whichever one is the LEAST is the answer.
(32.5g Mg) (1mol/24.3g) (1mol MgCl2/1 mol Mg) (95.3g/1 mol MgCl2) = 127.5g
(32.5g HCl) (1mol/36.5) (1mol MgCl2/2mol HCl) (95.3g/1 mol MgCl2) = 42.4g
So, you will get 42.4 g of MgCl2
<span>Well the solar radiation reaches Earth with more than enough energy in a single square meter to illuminate five 60-watt lightbulbs if all the sunlight could be captured and converted to electricity.</span>
