the answer is d hope this helps
Hey there!
Mass = 3 g
Volume = 3 mL
Density = mass / volume
D = 3 / 3
D = 1,0 g/mL
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.
Answer:
freezing
Explanation:
The process in which a liquid changes to a solid is called freezing or solidification. Energy is taken away during freezing.
Answer:
Mass = 25.2 g
Explanation:
Given data:
Number of formula units of NaHCO₃ = 1.8×10²³
Mass in gram = ?
Solution:
The given problem will solve by using 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 formula unit
1.8×10²³formula unit × 1mol / 6.022 × 10²³ formula unit
0.3 mol
Mass in gram:
Mass = number of moles × molar mass
Mass = 0.3 mol × 84 g/mol
Mass = 25.2 g
