Answer:
f = V / λ
Explanation:
In this formula, f represents frequency, V represents the velocity of the wave, and λ represents the wavelength of the wave
Answer:
1. Convert the mass of A to moles dividing in molar mass
2. Convert the moles of A to moles of D (2mol A = 3mol D)
3. Convert the moles of D to mass multiplying by its molar mass
Explanation:
As you can see in the equation, 2moles of A produce 3 moles of D, the equation is:
2mol A = 3mol D
But in the problem you are having the mass of A and you need the mass of D. That means you require to convert the mass of A to moles. With the moles of A you can find the moles of D and, as last, you need to convert the moles of A to mass.
To convert mass to moles or vice versa you must use <em>Molar Mass. </em>That means, the answer is:
<h3>
1. Convert the mass of A to moles dividing in molar mass</h3><h3>
2. Convert the moles of A to moles of D (2mol A = 3mol D
)</h3><h3>
3. Convert the moles of D to mass multiplying by its molar mass</h3><h3 />
Answer : The mass of NaCl needed would be, 86.1 grams.
Explanation :
Formula used for Elevation in boiling point :
or,
where,
= change in temperature =
= boiling point constant =
m = molality
i = Van't Hoff factor = 2 (for NaCl electrolyte)
= mass of solute (NaCl) = ?
= mass of solvent (water) = 1001 g
= molar mass of solute (NaCl) = 58.5 g/mol
Now put all the given values in the above formula, we get:
Therefore, the mass of NaCl needed would be, 86.1 grams.
<span>Conduction of electricity takes place when there are ions in the medium. The pure water has no ions to conduct electricity. When it has dissolved ions it will conduct electricity. In the case of dry soil it is very resistive to electricity. But when wet it has ions in water molecules among the soil particles. Then the soil becomes a conductor of electricity.</span>
Cooks should use sea salt in recipes instead of regular table salt.