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WINSTONCH [101]
2 years ago
11

What is additional in an isotope with an atomic mass that is two units larger than the standard atomic mass of the element?

Chemistry
1 answer:
tatuchka [14]2 years ago
3 0

Wassup Girl,

Question:What is additional in an isotope with an atomic mass that is two units larger than the standard atomic mass of the element?  

answer:two more electrons

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For the following reaction, the equilibrium constant Kc is 2.0 at a certain temperature. The reaction is endothermic. What do yo
jeyben [28]

Answer:

The correct answer is : 'the concatenation of NO will increase'.

Explanation:

Any change in the equilibrium is studied on the basis of Le-Chatelier's principle.

This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

If the temperature is increased, so according to the Le-Chatlier's principle , the equilibrium will shift in the direction where increase in temperature occurs.

2NOBr(g)\rightleftharpoons 2NO(g) + Br_2(g)

As, this is an endothermic reaction, increasing temperature will add more heat to the system which move equilibrium in the forward reaction with decrease in temperature. Hence, the equilibrium will shift in the right direction.

So, the concatenation of NO will increase.

7 0
3 years ago
Which has a greater density, a pound of feathers or a pound of gold
artcher [175]

Answer:

Explanation:

Hello!!

Please remember that density=mass/volume.

In this case, we have the same mass for the feathers and the gold (1 pound).

So, if the mass is the same for both we have:

Df*Vg=Dg*Vf    where f means feathers and g means gold.

In this case we see density is inversely related to volume. Both materials have the same mass. So which one have a bigger volume?

For this take a pound of feathers and submerge in a known volume of water. Note the displacement. Do the same for a pound of gold. Whichever has the smaller displacement, has the greater density.

In this case, Gold has the greatest density.

3 0
3 years ago
Why can it be difficult to demonstrate the Law of Conservation of Mass in action when a chemical reaction takes place in an open
rjkz [21]

Answer:

In simple words, in an open system, the system that has external interactions. Such interactions can take the form of information, energy, mass etc. So keeping this definition in mind, the law of conservation of mass in open system is difficult because when chemical reaction takes places things change form and some things are released as energy, That energy than escapes the system and interacts with other surrounding. This is why it is difficult to demonstrate Law of Conservation of Mass because the changes in mass due to chemical reaction cannot be accounted for properly since the lost mass (in form of energy) was lost to environment.

Whereas, in closed system, all components occur inside a closed container or something where external interactions are minimal to none so the energy lost due to chemical reaction does not escape the system thus it can be accounted for properly to demonstrate the law of conservation of Mass.

Explanation:

Too many words but should get the point across hopefully!

3 0
3 years ago
Sulfur hexafluoride, a dense gas, is held in two separate containers in a storage room at an atmospheric pressure of 755 mmHg an
dimaraw [331]

Explanation:

As it is given that both the given containers are at same temperature and pressure, therefore they have the same density.

So, mass of SF_{6} in container- 1 is as follows.

    5.35 mol x molar mass of SF_{6}

            = 7.61 mol x 146.06 g/mol

             = 1111.52 g

Therefore, density of SF_{6} will be calculated as follows.

            Density = \frac{mass}{volume}  

         density = \frac{1111.52 g}{2.09 L \times 1000 ml/L}

                       = 0.532 g/mL

Now, mass of SF_{6} in container- 2 is calculated as follows.

        4.46 L x 1000 mL/L x 0.532 g/mL

            = 2372.72 g

Hence, calculate the moles of moles SF_{6} present in container 2 as follows.

  No. of moles = \frac{mass}{\text{molar mass}}  

                        = \frac{2372.72 g}{146.06 g/mol}

                        = 16.24 mol

Since, 1 mol SF_{6} contains 6 moles F atoms .

So, 16.24 mol  SF_{6} contains following number of atoms.

                = 16.24 mol \times 6

                = 97.46 mol

Thus, we can conclude that moles of F atoms in container 2 are 97.46 mol.

7 0
3 years ago
What bond type is expected between C & H given that their electronegativity difference is 0.4?
Olenka [21]

Answer:

Since they have an electronegativity difference of 0.4 then they will form a Covalent Bond.

7 0
3 years ago
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