when 0.20 m nh4cl (aq) and 0.20 m naoh(aq) are mixed, the reaction represented by the equation above occurs and a strong smell of ammonia, nh3 is observed. based on this information, which of the following statements is true? And Why??

Answer:

for what school? It's different for all sadly :(

Explanation:

Answer:

24.6g of NaCl

Explanation:

Expression of the reaction:

            2NaCl →  2Na  +  Cl₂

Given parameters:

Mass of Cl₂  = 15g

Unknown:

Mass of NaCl  = ?

Solution:

To solve this problem, we have to use mole relationships.

 Find the number of moles of the mass of the given specie;

    Number of moles  = [tex]\frac{mass}{molar mass}[/tex]  

     Molar mass of Cl₂  = 2(35.5) = 71g/mol

   Number of moles  = [tex]\frac{15}{71}[/tex]   = 0.21mole

Now;

 From the balanced reaction equation;

        1 mole of Cl₂ is produced from 2 moles of NaCl;

      0.21 mole of Cl₂ will be produced from 0.21 x 2 = 0.42mole of NaCl

So,

  Mass of NaCl = number of moles x molar mass

    Molar mass of NaCl  = 23 + 35.5 = 58.5g/mol

 Mass of NaCl  = 0.42 x 58.5 = 24.6g of NaCl

Answer:

Emission spectra may be used in studying stars in order to determine what atoms makeup the individual star produces, due to the fact that each atom’s emission spectra biunique, one can observe the spectra emitted by the star and identify the atoms that are released by the light the star produces.

The emission spectrum can tell the elements present in the source of light. Therefore, this method can be used to get information about the element present in the stars.

Electromagnetic radiations interact with atoms or molecules of matter, the electrons absorb energy and jump to a higher energy state of atoms by losing their stability.

They need to move from the higher energy state to the lower energy level to regain their stability. These atoms or molecules emit radiations in several regions of the electromagnetic spectrum. The spectrum of radiation emitted by electrons in the excited state is called the emission spectrum.

The emission spectrum of a chemical element is the spectrum of frequencies of electromagnetic radiation emitted when an atom transitions from a high-energy state to a lower-energy state. The emitted energy is unique for every element and is the characteristic of the element.

Learn more about the emission spectrum, here:

https://brainly.com/question/12472637

#SPJ2

Answer: the correct answer is C velocity.

Explanation: I just got the answer wrong on the exam.

Answer:The Anwser is C; velocity

Explanation:

Explanation: Honestly, I have no idea and I've never learned this, but I think it's because of air resistance and currents? Going downwind would mean the plane's rate would be the speed of the wind + the speed of the plane itself. Going upwind, the plane's rate would be the speed of the plane - the speed of the wind. Thus, going one way (e. g. California to New York) could take less time than going the other way.

Answer:

YES

Explanation:

the main reason why bonds form is because the elements wants to be more stable so in a covalent bond the electrons are shared between two elements so they can fulfill or at least "feel" like they have fulfilled there outer shell.

Answer:

I think its D

Explanation:

It doesn't go straight up

Answer:

a because it comes 20 to 100c

Answer:

its c

Explanation:

Answer:

elimination:it is the act of discharging or excreting waste product from body is elimination.

substitution:the act/action of replacing someone or something with another person or thing.

Explanation:

conducting goodnluck

Answer:

C. Conduction

Explanation:

direct contact of particles will always be conduction.

Answer: potassium chloride

Answer:

a CUT stands for Circuit Under Test.

Explanation:

Answer:

A

Explanation:

Cs has a higher rate of reaction because it's easier to remove an electron from it, thereby leading to faster reactivity

Answer:

It's A but can i have brainliest pls i kinda need it

Explanation: