Answer: is a single replacement reaction.
Explanation:
A chemical reaction in which one element of a compound is replaced by another element is called single replacement reaction.
For example,
Here, fluorine element in the compound is replaced by the element bromine.
Therefore, it is a single replacement reaction.
Thus, we can conclude that is a single replacement reaction.
Answer:
B.
Explanation:
pH = 5.1 has an acid
A. H2O(L) - neutral
B. HC2H3O2(AQ) - acid pH<7
C. Ca(OH)2(AQ) - base pH>7
D. NH3(AQ)- base pH>7
Answer:
Gold has been used to make ornamental objects and jewelry for thousands of years. Gold nuggets found in a stream are very easy to work and were probably one of the first metals used by humans. Today, most of the gold that is newly mined or recycled is used in the manufacture of jewelry.
Answer:
Explanation:
CH₄ + H₂O(g) ⇒ CO(g)+3H2(g)
Equilibrium constant
K₁ = [CO][H₂]³ / [CH₄][H₂O]
CO(g)+H₂O(g) ⇒ CO₂(g) + H₂(g)
Equilibrium constant
K₂ = [CO₂][H₂] / [CO][H₂O]
CH₄(g)+2H₂O(g) ⇒ CO₂(g)+4H₂(g)
Equilibrium constant
K = [CO₂][H₂]⁴ /[CH₄][H₂O]²
= [CO][H₂]³ / [CH₄][H₂O] X [CO₂][H₂] / [CO][H₂O]
K₁ x K₂
K = K₁ x K₂
True because freshwater is regular water