Answer:
Explanation:
El mol está relacionado con la masa de un elemento de la siguiente manera: un mol de átomos de carbono-12 tiene 6.02214076 × 1023 átomos y una masa de 12 gramos. En comparación, un mol de oxígeno consta, por definición, de la misma cantidad de átomos que el carbono-12, pero tiene una masa de 15.999 gramos.
Answer:
r the first one was the first one was the first one was the first one was the first one was w and I have to say it was a great place 33rd and I have to say it was a great place for him ccjfjtjtjgjcfnfjrjru and I think he's a good team and I think he's
Explanation:
- d the same thing as the one that I was a great place for me j CV
(g) + OH(g) = (aq) (nitric acid)
Given,
Pressure of = 4.5x10-8 atm,
volume = 1.3x109 L, and
temp = 10ºC + 273 = 283K
moles. NO2 =? = n
PV = nRT
n = PV/RT = (4.5x10-8 atm)(1.3x109 L) / (0.0821 Latm/Kmol) (210K)
n = 3.4x10-18 moles NO2 = mols HNO3
mass HNO3 = 3.4 x 10 18 moles x 31 g/mol = 1.05 x 10 16 g.
<h3>Nitric acid</h3>
The inorganic substance nitric acid has the formula HNO3. This mineral acid is extremely corrosive. [5] Even though the chemical is colorless, older samples often have a yellow tinge from breakdown into nitrogen oxides. Nitric acid is 68 percent concentrated in water in the majority of commercially available products. Fumigating nitric acid is the term used to describe a solution that contains more than 86 percent HNO3. Depending on the quantity of nitrogen dioxide, fuming nitric acid is further classified as red fuming nitric acid at concentrations above 86 percent or white fuming nitric acid at concentrations above 95 percent. The main chemical used in nitration, or adding a nitro group usually to an organic molecule, is nitric acid.
How many grams of nitric acid are produced from this reaction if it reduces the partial pressure of no2 from a 1. 3×109l volume of air over a city by 4. 5×10−8atm when the temperature is 10∘c?
Learn more about nitric acid here:
brainly.com/question/26015251
#SPJ4
Answer: The mass of product left in the test tube will be less than the initial measured mass of the reactants.
Explanation: This is because one of the products of the reaction is a gas (hydrogen) and it escapes as the reaction happens in an open system.
This is the reaction,
Mg(s) + 2HCl(aq) --------> MgCl2(aq) + H2(g)
So, evidently, only MgCl2 is left in the reaction test tube together with unreacted reactants.
But, the hydrogen gas that escapes accounts for the lesser mass at the end of the reaction.
The mass in the test tube at the end of the reaction + the mass of Hydrogen gas that escapes = the mass of reactants before the reaction; consolidating the law of conservation of mass.
U-238 has 92 protons, 146 neutrons, and 92 electrons.
Rn-222 has 86 protons, 136 neutrons, and 86 electrons.
U-238 is Uranium 238 and Rn-222 is Radon 222.