Answer:
2 Hertz
Explanation:
<em>The frequency would be 2 Hertz.</em>
<u>The frequency of a wave is defined as the rate at which the particles of a medium vibrates when the wave is passed through it while the period of a wave is the time it takes the particles to make a complete cycle of vibration.</u>
The frequency of a wave is inversely related to its period and is defined by the following equation:
f = 1/t, where f is the frequency (in hertz) and t is the period (in seconds).
Hence, if the period of a ripple is 1/2 or 0.5 seconds, the frequency becomes;
f = 1/0.5 = 2 Hertz
Answer:
![\large \boxed{\textbf{32.7 g}}](https://tex.z-dn.net/?f=%5Clarge%20%5Cboxed%7B%5Ctextbf%7B32.7%20g%7D%7D)
Explanation:
We will need a balanced chemical equation with masses and molar masses, so, let's gather all the information in one place.
MM: 102.89 159.81
2NaBr + F₂ ⟶ 2NaF + Br₂
m/g: 25.4
(a) Moles of Br₂
![\text{Moles of Br$_{2}$} = \text{25.4 g Br$_{2}$}\times \dfrac{\text{1 mol Br$_{2}$}}{\text{159.81 g Br$_{2}$}}= \text{0.1589 mol Br$_{2}$}](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%20Br%24_%7B2%7D%24%7D%20%3D%20%5Ctext%7B25.4%20g%20Br%24_%7B2%7D%24%7D%5Ctimes%20%5Cdfrac%7B%5Ctext%7B1%20mol%20Br%24_%7B2%7D%24%7D%7D%7B%5Ctext%7B159.81%20g%20Br%24_%7B2%7D%24%7D%7D%3D%20%5Ctext%7B0.1589%20mol%20Br%24_%7B2%7D%24%7D)
(b) Moles of NaBr
![\text{Moles of NaBr} = \text{0.1589 mol Br$_{2}$} \times \dfrac{\text{2 mol NaBr }}{\text{1 mol Br$_{2}$}} = \text{0.3179 mol NaBr}](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%20NaBr%7D%20%3D%20%5Ctext%7B0.1589%20mol%20Br%24_%7B2%7D%24%7D%20%5Ctimes%20%5Cdfrac%7B%5Ctext%7B2%20mol%20NaBr%20%7D%7D%7B%5Ctext%7B1%20mol%20Br%24_%7B2%7D%24%7D%7D%20%3D%20%5Ctext%7B0.3179%20mol%20NaBr%7D)
(c) Mass of NaBr
![\text{Mass of NaBr} =\text{0.3179 mol NaBr} \times \dfrac{\text{102.89 g NaBr}}{\text{1 mol NaBr }} = \textbf{32.7g NaBr}\\\\\text{The reaction produces $\large \boxed{\textbf{32.7 g}}$ of NaBr}](https://tex.z-dn.net/?f=%5Ctext%7BMass%20of%20NaBr%7D%20%3D%5Ctext%7B0.3179%20mol%20NaBr%7D%20%5Ctimes%20%5Cdfrac%7B%5Ctext%7B102.89%20g%20NaBr%7D%7D%7B%5Ctext%7B1%20mol%20NaBr%20%7D%7D%20%3D%20%5Ctextbf%7B32.7g%20NaBr%7D%5C%5C%5C%5C%5Ctext%7BThe%20reaction%20produces%20%24%5Clarge%20%5Cboxed%7B%5Ctextbf%7B32.7%20g%7D%7D%24%20of%20NaBr%7D)
Answer:
You can learn about common things happening to the environment that aren't good. Such as erosion, and the effects it has on the land surrounding it.
Explanation:
If the American system is the same, group on should be alkali metals and the answer would be frankium