Answer:
Explanation:
The frequency and the wavelength of a wave are related by the equation
where
v is the speed
f is the frequency
is the wavelength
For the sound wave in this problem, we have
f = 634 Hz (frequency)
(wavelength)
Therefore, the speed of the wave is
The speed of sound in air depends on the temperature according to the equation
where T is the temperature.
In this problem, we know the speed, so we can calculate the temperature:
Normal faults form tension stress, reverse faults form compression stress, and strike-slip faults form shear stress.
Solution :
It is given that :
The formula of the compound =
And that 4.70 g of the sample contains mol of Br.
It means that :
1 mol of contains = 3 mol of Br
∴ 3 mol of contain in 1 mol of
mol of contains mol of
Thus the mol of = mol
The given mass is = 4.700 g
Therefore, the of
= 298.4 g/mol
So of = of X + 3 x of Br
298.4 g/mol = of X + 3 x 79.90 g/mol
298.4 g/mol = of X + 239.7 g/mol
of X = 58.71 g/mol (since 1 amu = 1 g/mol)
Therefore the atomic mass of the unknown metal = 58.71 g/mol
So the unknown meta is Nickel.
Answer:
11. physical
19. chemical
10. chemical
12. physical
18. chemical
Explanation:
that should be right, I'm not exactly sure though
B. in nuclear power plan<span>ts </span>