Answer:
B
Explanation:
when elements reacts to form a compound the elements properties changes completely. This happens due to the fact that a chemical reaction has taken place. In a chemical change new substances are formed and the properties of the products differ entirely from that of the reactant.
for example if hydrogen combines with oxygen to form water, the property of hydrogen differs from oxygen and also both differs chemically when compared to water.
According to Gay-lussac’s law, if the temperature of a gas increases, then the the pressure ALSO INCREASES.
Answer:
Explanation:
Na₂S₂O₃ + 4Cl₂ + 5H₂O → 2NaHSO₄ + 8HCl.
4 moles 8 moles
4 moles of Cl₂ forms 8 moles of HCl
.25 moles of Cl₂ forms 8 x .25 / 4 moles of HCl
HCl formed = .50 moles .
E is the answer .
Atoms that share electrons in a chemical bond have covalent bonds. An oxygen molecule (O2) is a good example of a molecule with a covalent bond. Ionic bonds occur when electrons are donated from one atom to another.
