Answer: Calcium carbonate is another example of a compound with both ionic and covalent bonds. Here calcium acts as the cation, with the carbonate species as the anion. These species share an ionic bond, while the carbon and oxygen atoms in carbonate are covalently bonded
Explanation:
Answer:
4
Explanation:
Given reaction is
2A + 3B -> 2C
From the above reaction for every 2 moles of A, 2 moles of C is formed and therefore for every mole of A reacted, 1 mole of C is formed
Now in this case we have 4 moles of A and excess amount of B
So in this case the limiting reagent is A and the excess reagent is B
As in this case A is the limiting reagent so for 4 moles of A reacted, 4 moles of C is formed
But formation of 4 moles of C is just expected because it is just the maximum amount of C formed as during the reaction there can be losses as well if the reaction is not done properly
The concentration of this acid in moles per litre : 17.41
<h3>Further explanation</h3>
Given
99.5% acetic acid
density=ρ=1.05 g/ml
Required
the concentration (mol/L)
Solution
99.5% dan density 1.05 g/ml (MW acetic acid = 60 g/mol)
F₂ + 2NaBr→ 2NaF +Br₂
The chemical equation above show the conservation of matter because
The number of F atoms in the reactants equal the number of F atoms in the product (answer C)
<u><em>Explanation</em></u>
According to the law of mass of matter conservation, the number of atoms in the reactants side should be equal to number of atoms in products side.
For example in reaction above the number of F atoms in reactants side equal the number of F atoms in the products side.Therefore the equation above show the conservation of matter.
The moles of OH- ions from the Ba(OH)2 must equal the moles of H+ ions from the HNO3 in order for them to neutralize. You must multiply volume (in liters) by the molar to get number of moles. There is 0.90 molar of OH- because there is twice as many OH- as there is Ba(OH)2. The molarity of H+ is unknown.
Let X be the unknown molarity
(0.0182 L)(0.90 M) = (0.0385 L)(X M)
X = 0.43 M (2 significant figures)
So the molarity of H+ ions, and therefore HNO3 is 0.43 M