Answer: -
219.375 g of NaCl is present in a 0.75 M solution with a volume of 500.0 milliliter
Explanation: -
Volume of NaCl solution = 500 mL
= 500/1000 = 0.5 L
Strength of NaCl solution = 0.75 M
Number of moles of NaCl = Strength of NaCl x Volume of NaCl
= 0.75 M x 0.5 L
= 3.75 mol
Molar mass of NaCl = 23 x 1 + 35.5 x 1
= 58.5 g / mol
Mass of NaCl = Molar mass x number of moles
= 58.5 g / mol x 3.75 mol
= 219.375 g
The limiting reagent is Copper (Cu)
First, balance the reaction before determining the limiting reactant.
Cu + 2Ag
Cu(NO3)2 + 2Ag from NO3
Take the beginning material amount and calculate the number of moles of one of the products to identify the limiting reactant. The limiting reactant is the one that produces a product with the fewest moles.
5.50×1.00/2.00=2.75
The limiting reactant is the one that is consumed first and sets a limit on the quantity of product(s) that can be produced. Calculate how many moles of each reactant are present and contrast this ratio with the mole ratio of the reactants in the balanced chemical equation to get the limiting reactant.
Copper is the limiting reactant since there are only 2.50 mol of it and only 2.50 mol of AgNO3 will result from the reaction.
Learn more about the limiting reagent brainly.com/question/14795543
#SPJ4.
Answer:
A strong alkali is 100% ionised.eg÷sodium hydroxide.
A week alkali is not 100% ionised.eg÷ammonia
A concentrated acid contains a large amount of acid in a given volume.
<u>Answer:</u> The frequency of the radiation is 33.9 THz
<u>Explanation:</u>
We are given:
Wave number of the radiation,
Wave number is defined as the number of wavelengths per unit length.
Mathematically,
where,
= wave number =
= wavelength of the radiation = ?
Putting values in above equation, we get:
Converting this into meters, we use the conversion factor:
1 m = 100 cm
So,
- The relation between frequency and wavelength is given as:
where,
c = the speed of light =
= frequency of the radiation = ?
Putting values in above equation, we get:
Converting this into tera Hertz, we use the conversion factor:
So,
Hence, the frequency of the radiation is 33.9 THz