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kodGreya [7K]
3 years ago
9

The equation for the chemical reaction shown is not balanced. What number should replace the question mark to balance this equat

ion?
2KBr + ?Pb(NO3)2 → 2KNO3+ PbBr2

A.
The equation is balanced as is.

B.
A 6 is required.

C.
A 3 is required.

D.
A 2 is required.
Physics
1 answer:
Fudgin [204]3 years ago
7 0
The equation is balanced as it is.
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C

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Which of these letters is the symbol for current in equations A: c B: i C: r D: t
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3 years ago
What is the kinetic energy of a 120-cm thin uniform rod with a mass of 450 g that is rotating about its center at 3.60 rad/s?
goldfiish [28.3K]

Answer:

1.05 J.

Explanation:

Kinetic Energy: This is the energy possessed by a body due to its motion. The S.I unit of kinetic energy is Joules (J). The formula of kinetic energy is given as

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Where Ek = kinetic energy, m = mass of the uniform rod, v = liner velocity of the rod.

But,

v = αr .......................... Equation 2

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