Determine which elements or compounds are missing from the following reaction equation: ______ + bromine → lead bromide A. silve
2 answers:
Answer : The correct option is, (C) lead
Explanation :
Balanced chemical reaction : It is defined as the reaction in which the atoms of individual elements present on the reactant side must be equal to the product side.
As per question, when lead react with bromine then it gives lead bromide as a product.
The balanced chemical reaction will be,
Or,
Hence, the element missing from the following reaction is, lead.
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Answer:
The relative velocity of the motorcycle to a passenger in the car is 30 km/h
Explanation:
The question relates to the principle of relative velocity and reference frames
The given parameters are;
The velocity of the motorcycle, v₁ = 120 km/h
The velocity of the car, v₂ = 90 km/h
The relative velocity of an object X with regards to another object Y is the velocity the object X will seem to be moving with to an observer in the rest frame of object Y written as =
-
Therefore, the relative velocity of the motorcycle to the car is = v₁ - v₂, which give;
= 120 km/h - 90 km/h = 30 km/h
The relative velocity of the motorcycle to a passenger in the car = 30 km/h.