What force causes
venus to travel along a curved path instead of moving in a straight line
The force that causes
Venus to travel along a curved path instead of moving in a straight line is the
gravitational force between the Sun and the Venus. The more massive a body is,
the more it attracts bodies near it.
Answer:
An exact number is a value that is known with complete certainty. Like for Examples of exact numbers are counted numbers of objects or certain unit conversions. For example, there are exactly 3 feet in 1 yard. There are exactly 12 eggs in a dozen. A class may contain exactly 25 students.
Explanation:
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Metallic solids or metallic structures experience metallic bonds which are the forces of attractions between the sea of electrons and the nucleus of the metallic atoms. They share a network of highly delocalized electrons.
I therefore think that the packing efficiency decreases as the number of nearest neighbors decreases.
Answer:
The answer to your question is below
Explanation:
I just write the formulas of the reactants and products and balanced the reactions.
a)
3H₂(g) + N₂(g) ⇒ 2NH₃
b)
2K + 2H₂O ⇒ 2KOH + H₂ (g)
c)
2Al(s) + Fe₂O₃ ⇒ Al₂O₃ + 2Fe
d)
Fe₂O₃ + 2Al ⇒ Al₂O₃ + 2Fe
e)
Ba(OH)₂ + 2HBr ⇒ BaBr₂ + 2H₂O
f)
CaCO₃ + Δ ⇒ CaO + CO₂
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