Answer:
B)H2SO4
Explanation:
Pentru Că așa vrea soarta
Answer:
C. A Roman numeral placed after the transition metal identifies its
oxidation state.
Explanation:
A. A superscript on the transition metal identifies its oxidation state
in the formula.
This is wrong! Superscript are usually not written in formula of compound and for those that have superscripts, it refers to the oxidation number of the compound as a whole.
B. The subscript of the transition metal in the formula identifies its
oxidation state.
This is wrong! Subscripts shows how many atoms of the element is present.
C. A Roman numeral placed after the transition metal identifies its
oxidation state.
This is correct! Examples include; manganese (II) oxide, Potassium manganate (VII) etc
D. The total charge of the negative ion identifies the oxidation state
of the transition metal.
This is wrong! Because there are cases of other metals or cations being present in the compound aside the transition metal
Answer:
the solid melted and gained energy
it also looks like some of the water evaporated
Explanation:
p.s. also the molecules expanded
Answer:
increasing the pressure of the reactant mixture
Explanation:
according to the collision theory , the number of collisions that take place per unit volume of the reaction mixture is called collision frequency. The effective collisions are ones which result into the formation of products. It depends on energy factor: For collision to be effective, the colliding molecules must have energy more than a particular value called as threshold energy. increasing the temperature of the reactant mixture, the reactant molecules will gain kinetic energy and thus will increase the number of effective collisions.
Answer:
they are more likely to get sick from the same disease