Answer:
22.25 °C
Explanation:
Determine the final temperature when a 25.0 g piece of iron at 85.0 °C is placed into 75.0 grams of water at 20.0 °C.
Answer:
5 will come in blank
4KMnO₄ ----------> 2K₂O + 4MnO + 5O₂
Explanation:
Reaction:
4KMnO₄ ----------> 2K₂O + 4MnO + ____O₂
this reaction is the dissociation reaction in which KMnO₄ is break down into its component.
KMnO₄ upon dissociation gives Potassium oxide, manganese oxide and liberate oxygen
Balance Chemical Equation:
A balanced chemical equation is that in which the the number of the reactant atoms equal to the number of the product atom.
For example if the oxygen at the reactant side is 4, the number of oxygen should be 4 on the product side.
So for this purpose we have to balnce the reaction and number of atoms on each side of the arrow
if we see the given Equation
Numbers of atom on reactant Side:
K = 4
Mn = 4
O = 16
Numbers of atom on reactant Side:
K = 4
Mn = 4
O = 6 instead of blank oxygen molecule
so from the above data we have 10 oxygen less.
If we put the 5 in the blank then we will have 10 oxygen and equation will be balanced
So the balanced Equation will be
4KMnO₄ ----------> 2K₂O + 4MnO + 5O₂
Answer: OA is a balanced equation.
Explanation: For an equation to be balanced, the number of atoms and the total charge of each element in the reaction, of the product and reactant side must be the same.
Considering OA; 6 atoms of nitrogen is present in the reactant side. Shifting to the product side, 6 atoms of nitrogen is also present. Taking the other element in the reaction into account, the number of atoms of each element balances on both sides.
He. it is a noble gas and therefore has a full outer shell of electrons. it does not need to gain or loose any.
Answer:
only 1 parent is needed! and the offspring is a identical copy of the parent
