Answer:
The appropriate speed will be "20 m/s".
Explanation:
The given values are:
Wavelength,
λ = 5.0 M
Frequency,
f = 4 Hz
Now,
The speed of the wave will be:
⇒
On putting the values, we get
⇒
⇒
solution is attached below in figure .
and table is in word document
Answer:
0.33 moles
Explanation:
to find the number of moles,
moles = number of atoms / avogadro's number ie 6.02 x
moles = 2.0 x / 6.02 x
moles = 0.33 mol
K₂SO₄ + CaI₂ → CaSO₄ + KI
K: 2 K: 1
S: 1 S: 1
O: 4 O: 4
Ca: 1 Ca: 1
I: 2 I: 1
↓
K₂SO₄ + CaI₂ → CaSO₄ + 2KI
K: 2 K: 2
S: 1 S: 1
O: 4 O: 4
Ca: 1 Ca: 1
I: 2 I: 2