Think about a typical school day. In the space provided below, describe how each of the different forms of energy we have learne
2 answers:
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Answer:
Explanation:
The final velocity is given by the following kinematic equation:
Here, is the initial velocity, a is the body's acceleration and t is the motion time. We have to convert the time to seconds:
Now, we calculate the final velocity:
Answer:
zirconium
Explanation:
Given, Mass of AgBr(s) = 23.0052 g
Molar mass of AgBr(s) = 187.77 g/mol
The formula for the calculation of moles is shown below:
Thus,
The reaction taking place is:
From the reaction,
4 moles of AgBr is produced when 1 mole of undergoes reaction
1 mole of AgBr is produced when 1 / 4 mole of undergoes reaction
0.1225 mole of AgBr is produced when mole of
undergoes reaction
Moles of got reacted = 0.030625 moles
Mass of the sample taken = 12.5843 g
Let the molar mass of the metal = x g/mol
So, Molar mass of = x + 4 × 79.904 g/mol = 319.616 + x g/mol
Thus,
Solve for x,
we get, x = 91.2999 g/mol
<u>The metal shows +4 oxidation state and has mass of 91.2999 g/mol . The metals is zirconium.</u>
Answer:
m2 = 83.3 g
Explanation:
by conservation of momentum principle we have
as both sphere has same speed so
from conservation of kinetic energy principle we have
substituting this value in above equation to get m2 value
solving for m2 we get
m_1 = 250 g
m2 = 83.3 g