<span>Is it on the Activity 5? "drop it like a hot spot'' .
</span><span>In the activity "Drop it Like its "hot spot", it can be seen that the surface of the paper which is directly in contact with the test tube became wet considering that the paper represents the earth's crust and the water is the magma coming from the earth's . </span>
Answer:
If NaOH of a known concentration neutralizes HCl of an unknown concentration, then you can use the volumes to determine the concentration of the HCl, because, at the equilibrium point, the number of moles of HCl equals the number of moles of NaOH.
Explanation:
I just finished the assignment.
Answer:B
Explanation: I’m sure it is.
Answer:
11.29 kJ (to 4 sf)
Explanation:
Here, ammonia is the limiting reactant.
For the reaction to occur once, 4 moles of ammonia must be consumed.
Thus means that the reaction can occur 0.1579/4=0.039475 times.
Therefore, (286)(0.039475) = 11.29 kJ (to 4 sf)
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