H+ refer to acid solution HCI (aq). the presence of H+ ions in a solution cause : b. a reaction with magnesium to release hydrogen gas.
the equation H+ react with magnesium to release hydrogen gas is Mg + 2H + --> Mg(2+) H2(g)
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Given equation:
P + O2 → P2O5
In order for the equation to be balanced, the stoichiometry of the atoms of one kind on the reactant side must be equal to that on the product
Reactants Products
P = 1 P = 2
O = 2 O = 5
The balanced equation would be:
4P + 5O2 → 2P2O5
Reactants Products
P = 4 P = 4
O = 10 O = 10
Ans: D)
Calcium has a chemical symbol of Ca and has an atomic number of 20. This means that a neutral calcium ion will have 20 protons and 20 electrons. As part of Group 2 (alkaline earth metals), a calcium ion will be formed by ejecting 2 electrons from the neutral Ca atom. In chemical equation,
Ca --> Ca²⁺ + 2e⁻
Answer:
erosion
Explanation:
erosion is the term that refers to the process by which land is worn away by natural forces or human activity.
e. ice changed to gas
f.the specific heat of vaporisation is greater than heat of fusion because eventually all the ice changed to gas it becomes vaporisation
