The balanced chemical equations are as follows:
- AlBr₃ + K → 3 KBr + Al
- FeO + PdF₂ → FeF₂ + PdO
- P₄ + 6 Br₂ → 4 PBr₃
- 2 LiCl + Br₂ → 2 LiBr + Cl₂
<h3>What are balanced chemical equations?</h3>
Balanced chemical equations in which the moles of atoms of elements taking part in a reaction are balanced on both sides of the equation.
The balancing of chemical equations follows the law of conservation of mass which states that matter can neither be created nor destroyed.
In balancing of chemical equations, the following steps are follows:
- ensure that the all the substances involved are written in the equation
- do not alter the formula of compounds or molecules
- add numerical coefficients in front of the compounds and molecules to ensure that the moles of atoms of elements are balanced on both sides of the equation
In conclusion, a balanced chemical equation obeys the law of conservation of mass.
Learn more about balancing of chemical equations at: brainly.com/question/17056447
#SPJ1
A mineral found in a bridge is iron
Chemical reactions can be broadly classified into two categories from the context of heat requirement. These include; endothermic and exothermic reactions.
Endothermic reactions proceed with the absorption of heat while exothermic reactions are accompanied by the evolution of heat.
1) Oxidation of iron involves reaction of elemental iron with oxygen to form iron oxide (rust). This is essentially a corrosion reaction in which the metallic bonds in Fe are broken and new bonds between Fe and O are formed, This is an exothermic reaction
4Fe + 3O2 → 2Fe2O3
Ans D)
2) The process of condensation i.e. phase change liquid to solid (or gas to liquid) involves release of heat to the surroundings, hence it will be an exothermic reaction.
Ans B)
3) Specific heat is the amount of heat required to raise the temperature of 1 g of a substance by a 1 C. Typically, liquids and gases are used as coolants. For a coolant to be efficient, it must have a high specific heat.
Ans B)
In order to calculate the final volume of the gas, we may apply Charles Law, which states that for a fixed amount of gas subject to a fixed amount of pressure, the volume and temperature of a gas are directly proportional. This is:
V/T = constant
Using this equation,
5/298 = V/278
V = 4.66 L
The final volume of the gas is 4.66 liters
Answer:
Dominant traits are always expressed when the connected allele is dominant, even if only one copy exists. Recessive traits are expressed only if both the connected alleles are recessive.
Explanation:
Freckles, cleft chin and dimples are all examples of a dominant trait.
