Answer:
Yes.
The nuclear equation {226/88 Ra → 222/26 Rn + 4/2 He} is balanced. As we know that an alpha particle is identical to a helium atom. This implies that if an alpha particle is eliminated from an atom's nucleus, an atomic number of 2 and a mass number of 4 is lost.
Therefore, the equation will be reduced to:
226 - 4 = 222
88 - 2 = 86
Hence, the equation is balanced.
Explanation:
Answer:
Acceleration, rate at which velocity changes with time, in terms of both speed and direction. A point or an object moving in a straight line is accelerated if it speeds up or slows down. Motion on a circle is accelerated even if the speed is constant, because the direction is continually changing.
Time graph plots acceleration values on the y-axis, and time values on the x-axis. In this graph, the acceleration remains constant at 2.0 m/s/s for 10 seconds. Acceleration is defined as a change in an object's velocity, so if an object is accelerating at 2 m/s/s, then every 1 second, the object will gain 2 m/s.
<u>Answer:</u> The volume of nitrogen gas at STP is 44.8 L.
<u>Explanation:</u>
The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation for it follows:
...(1)
We are given:
Given mass of 
= 130.0 g
Molar mass of = 65.01 g/mol
Using equation 1:
For the given chemical equation:
By the stoichiometry of the reaction:
2 moles of produces 3 moles of nitrogen gas
At STP:
1 mole of a gas occupies 22.4 L of volume
So, 2 moles of nitrogen gas will occupy 
of volume
Hence, the volume of nitrogen gas at STP is 44.8 L.
Answer:
The answer to your question is pOH = 4.48
Explanation:
Data
pOH = ?
[KOH] = 3.32 x 10⁻⁵ M
pOH measures the concentration of [OH⁻]. [OH⁻] measures the alkalinity of a solution.
Process
1.- Write the formula to calculate pOH
pOH = -log[OH⁻]
2.- Substitution
pOH = -log[3.32 x 10⁻⁵]
3.- Simplification
pOH = -(-4.48)
4.- Result
pOH = 4.48
Br2 5mol take a 10 mol Br atoms mol
