3 years ago

What is the frequency of a wave?

1 answer:

4 0

Wavelength is also measured in metres (m) - it is a length after all. The frequency, f, of a wave is the number of waves passing a point in a certain time. We normally use a time of one second, so this gives frequency the unit hertz (Hz), since one hertz is equal to one wave per second.

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Fredrick is doing a lab on pH. He uses many household items to determine the pH of his items. Which of his actions best describe

Kruka [31]

Explanation:

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3 0

3 years ago

The concentration of dye in Solution A is 25.527 M. You have 13 mL of water at your disposal to make the dilutions. The solution

Lady bird [3.3K]

Answer:

38825.472 M

Explanation:

Using

C1V1=C2V2

To make solution B,

C1 = 25.527 M, V1 = 13 mL

C2 = 25.527 x 8 = 204.216 M

V2 = 13 X 12 = 156 mL

To make solution C'

C1 = 8 X 202.216 M = 1617.728

V1 = 8 X 156mL = 1248 mL

V2 = 4 X 13 = 52 mL

C2 = C1V1 / V2

=1617.728 X 1248 / 52

=38825.472 M

7 0

3 years ago

Gas expands as it heats up. We call this phenomena...

ra1l [238]

I believe the answer is thermal expansion.

7 0

3 years ago

Read 2 more answers

Example of obtuse angle

marishachu [46]

Answer:

when the degree is less than 90

8 0

3 years ago

The enthalpy change for the reaction of titanium metal with gaseous iodine is given by the following thermochemical equation: 2

julia-pushkina [17]

Answer : The enthalpy change for the reaction is, 419.5 kJ

Explanation :

According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.

The given chemical reaction is,

$2Ti(s)+3I_2(g)\rightarrow 2TiI_3(s)$ $\Delta H=-839kJ$