CHEMISTRY HIGH SCHOOL

Classify the following reactions and complete the given below
A) NaCl + AgNO3 - NaNO3 + AgCl

Answers

Answer 1
Answer:

Answer:

chemical equation balance.

Explanation:

if you need more explanation , comment.

Related Questions

The chemical formula below shows how salt is produced.HCl + NaOH -----> NaCl + H2O Which substances are the reactants?
Mendeleev saw trends in the physical and chemical properties of elements when he organized them by _____.
Which environmental changes occur faster?A.volcanic eruption B.regrowth of forest after volcanic eruption
Why did Rutherford conclude that the atom was mostly empty space?
Predict the changes in the number of particles based the diagram.A) Pressure is indirectly related to moles. B) Volume is proportionally related to moles. C) Moles remains constant as pressure changes. D) Temperature is directly related to the moles.

Which substance is a reactant(s)
O2 only
MgO only
Mg and O2
Mg only

Answers

Reactants in all these elements are Mg and O2

You fill a balloon with 2.50 moles of gas at 25°C at a pressure of 1.49 atm. What is the volume of the balloon?

Answers

You need to use the ideal gas equation: 

PV = nRT

P is pressure (in atm or bar)

V is volume (in L)

n is the number of moles (in mol)
 
R is an experimentally determined ratio of about 0.82 

T is the temperature (in Kelvin)

Note: For all gases, you need to convert Celsius or Fahrenheit to Kelvin.

25C + 273.15 = 298.15K

Get V alone.

V = (nRT)/(P)

Plug in the values you have.

V = (2.50 mol * 0.82 * 298.15 K)/(1.49 atm)

you get:

V = 611.2075L

A fun fact: the gas used to fill up a balloon is Helium. 

chlorine has 7 outer energy level electrons and argon has 8. what is the difference in the reactivity of these two elements?

Answers

chlorine is more reactive than argon, because argon is not reactive at all. Chlorine only has to gain 1 valence electron
Chlorine is highly reactive as it seeks to gain an extra electron to balance its outer shell (max 8) and argon is stable because it has a stable outer shell

A bullet of mass 50g is fired from a gun at a speed of 250ms. What is the kinetic energy possessed by the bullet?

Answers

Answer: the kinetic energy possessed by the bullet is 1562.5 Joules (J).

Explanation:

Ammonia and sulfuric acid react to form ammonium sulfate. Determine the starting mass of each reactant if 20.3 g of ammonium sulfate is produced and 5.89g of sulfuric acid remains unreacted.

Answers

Answer: The mass of ammonia is 5.236 g and that of sulfuric acid is 15.064 g

Explanation:

  • Calculating the mass of ammonia:

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}      .....(1)

Given mass of ammonium sulfate = 20.3 g

Molar mass of ammonium sulfate = 132.14 g/mol

Putting values in equation 1, we get:

\text{Moles of ammonium sulfate}=(20.3g)/(132.14g/mol)=0.154mol

The chemical equation for the reaction of ammonia and sulfuric acid follows:

2NH_3+H_2SO_4\rightarrow (NH_4)_2SO_4

As, sulfuric acid remains unreacted, which means it is an excess reagent and its starting mass cannot be determined from ammonium sulfate.

By Stoichiometry of the reaction:

1 mole of ammonium sulfate is produced by 2 moles of ammonia.

So, 0.154 moles of ammonium sulfate is produced by = (2)/(1)* 0.154=0.308mol of ammonia.

Now, calculating the mass of ammonia from equation 1, we get:

Molar mass of ammonia = 17 g/mol

Moles of ammonia = 0.308 moles

Putting values in equation 1, we get:

0.308mol=\frac{\text{Mass of ammonia}}{17g/mol}\n\n\text{Mass of ammonia}=5.236g

  • Calculating the mass of sulfuric acid

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.  

This also means that total mass on the reactant side must be equal to the total mass on the product side.

Let the mass of sulfuric acid be 'x' grams

We are given:

Mass of ammonium sulfate = 20.3 grams

Mass of ammonia = 5.236 grams

Total mass on reactant side = 5.236 + x

Total mass on product side = 20.3 g

So, by applying law of conservation of mass, we get:

5.236+x=20.3\n\nx=15.064g

Hence, the mass of ammonia is 5.236 g and that of sulfuric acid is 15.064 g
2NH₃    +    H₂SO₄     ⇒     (NH₄)₂SO₄
34.06g  :     98.08g      :      132.14g
     x               y                 20.03g

x = [20.03g*34.06g]/132.14g = 5.16g

5.16g + y = 20.03g  ⇔  from stoichiometric ratio
20.03g - 5.16g = y
y = 14,87g + 5.89g = 20.76g  ⇔ 5.89g of sulfuric(VI) acid remains unreacted

Starting mass:

mNH₃ = 5.16g
mH₂SO₄ = 20.76g

Reflecting and refracting telescopes are used to gather radiation from space. Which of these statements best explains why a refracting telescope is made smaller than a reflecting telescope?A. Small lenses cause less distortion in images than big lenses.

B. Small lenses cause more distortion in images than big lenses.

C. Small telescopes gather more radiation from space than big telescopes.

D. Small telescopes produce clearer images of distant objects than big telescopes.

* PLEASE ONLY ANSWER THIS QUESTION IF YOU KNOW YOUR ANSWER IS 100% CORRECT * Thank you! :)

-Also- I have heard there is "no right answer" to this question from others, but I still need to answer it, (preferably correctly!)

Answers

I think the correct answer from the choices listed above is option A. A refracting telescope is made smaller than a reflecting telescope because small lenses cause less distortion in images than big lenses.  They are not subject to chromatic aberration because reflected light does not disperse according to wavelength.

Answer:A

Explanation:Test
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