Answer:
2K + 2H₂O → 2KOH + H₂
Explanation:
The reactants are:
Potassium metal = K
Water = H₂O
The products are:
Potassium hydroxide = KOH
Hydrogen gas = H₂
The reaction equation is given as;
Reactants → Products
2K + 2H₂O → 2KOH + H₂
The reaction is a single displacement reaction
A scientific law is a statement based on repeated experimental observations that describes some aspects of the universe. A scientific law always applies under the same conditions, and implies that there is a causal relationship involving its elements.
Answer:
C
Explanation:
∆H°f means the enthalpy change of formation of one mole of substance by its constituent elements under standard conditions.
So in an equation for ∆H°f, we must see 2 or more elements as reactants combining to form a compound.
In the 4 answers, only C represents elements forming a substance (Al(s) + 3/2O2(g) + 3/2H2(g) -> Al(OH)3(s)),
while the others include compounds as one of their reactants.
Answer:
1 mole is equal to 1 moles C6H6, or 78.11184 grams.
Hopefully this helped!
-✩sandwichchan✩
Answer:
E
Explanation:
kinetic energy of linear motion

kinetic energy, K.e= 100joules
mass, m = 2kg
velocity, v =?
substituting the values into the formula :



