Answer:
Balanced equation:
Explanation:
The chemical reaction between Lead(II) Nitrate and potassium carbonate is as follows.
Ionic equation:
Cancel the same ions on the both sides of the reaction.
The net ionic equation is as follows.
Answer:
True
Explanation:
According to some calculations, the Earth is losing 50,000 metric tons of mass every single year, even though an extra 40,000 metric tons of space dust converge onto the Earth's gravity well, it's still losing weight.
Answer:
true
Explanation:
Answer:no
Explanation:
Answer:
Scandium is a transition metal
Explanation:
phosphate (Ca3(PO4)2), a major component of bone.
% Ca
%P
% 0
Answer:
38.7%
41.3%
20%
Explanation:
The percentage composition helps to know the what percent of the total mass of a compound is made up of each of the constituent elements or groups.
To solve this problem:
Compound:
Ca₃(PO₄)₂
Formula mass = 3(40) + 2[31 + 4(16)]
= 120 + 2(95)
= 120 + 190
= 310
%C = x 100 = 38.7%
%P = x 100 = 41.3%
%O = x 200 = 20%
b. exothermic reaction
c. spontaneous reaction.
d. nonspontaneous reaction.
Answer:
a. endothermic reaction
Explanation:
In an endothermic reaction, heat is absorbed from the environment. This leaves the surrounding at a colder temperature compared to the system.
ΔH, the change in enthalpy is assigned a positive sign because the heat energy level of the final state is higher than that of the initial state.
Some examples are mostly dissolution substances in water.
Answer:
(R) - hexyl acetate
Explanation:
Hello,
This reacción is a nucleophilic substitution SN2.
The configuration (s), means that the groups around the chiral carbon are organized appose to the clock hands movement. But when the reaction happens, these configurations become an (r) configuration, it means the groups around the chiral carbon organize according to the clock hands movement.
Generally, these reactions are related to nucleophilic species, an example is the ion acetate, a conjugated acid which is a weak nucleophilic, for this reason, the transition state is more energetic, it means, less stable than if the reaction occurs with a strong nucleophilic.
Look the image to compare the two configurations of the reactant and product.