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harina [27]
2 years ago
10

15. Nadia wrote the following sentence in her report on Pluto: "Pluto is a dwarf planet because it has a spherical shape

Chemistry
1 answer:
snow_tiger [21]2 years ago
7 0

Answer:

B. Pluto's orbit is not clear of other objects

Explanation:

Pluto is a dwarf planet and considered as ninth planet of the solar system.

A large body whose orbit do not clear the neighbourhood is classified as a dwarf planet. The gravity of Neptune limit the orbit of Pluto and shares its orbital neighbourhood with many Kuiper belt objects.

Hence, the correct answer is "B. Pluto's orbit is not clear of other objects".

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The standard enthalpy of formation of BrCl(g) is 14.7 kJmol-1 . The standard enthalpies for the atomization of Br2(l) and Cl2(g)
natita [175]

Explanation:

Equation of the reaction:

Br2(l) + Cl2(g) --> 2BrCl(g)

The enthalpy change for this reaction will be equal to twice the standard enthalpy change of formation for bromine monochloride, BrCl.

The standard enthalpy change of formation for a compound,

ΔH°f, is the change in enthalpy when one mole of that compound is formed from its constituent elements in their standard state at a pressure of 1 atm.

This means that the standard enthalpy change of formation will correspond to the change in enthalpy associated with this reaction

1/2Br2(g) + 1/2Cl2(g) → BrCl(g)

Here, ΔH°rxn = ΔH°f

This means that the enthalpy change for this reaction will be twice the value of ΔH°f = 2 moles BrCl

Using Hess' law,

ΔH°f = total energy of reactant - total energy of product

= (1/2 * (+112) + 1/2 * (+121)) - 14.7

= 101.8 kJ/mol

ΔH°rxn = 101.8 kJ/mol.

8 0
3 years ago
Which of a following elements has the Smallest atomic radius 1. Ge 2. SI 3. Carbon 4. Sn​
Artyom0805 [142]

Answer:

carbon

Explanation:

Atomic radius represents the distance from the nucleus to the outer shell of an element.

8 0
3 years ago
cuando las particulas estan separadas una de la otra se dice que su estado de agregacion o fisico es?
Mamont248 [21]

Answer:

english:

Solid is the state in which matter maintains a certain volume and shape; liquid is the state in which matter conforms to the shape of its container, but varies only slightly in volume; gas is the state in which matter expands to fill the volume and shape of its container.

español:

Sólido es el estado en el que la materia mantiene cierto volumen y forma; el líquido es el estado en el que la materia se adapta a la forma de su recipiente, pero varía sólo ligeramente en volumen; el gas es el estado en el que la materia se expande para ocupar el volumen y la forma de su recipiente.

7 0
3 years ago
Read 2 more answers
A magnet moved near a coil of wire can cause a(n)
Phantasy [73]
When a magnet moves near a coil of wire it can cause an A. electric current
7 0
3 years ago
Read 2 more answers
Sort the examples based on whether they describe a physical change or a chemical reaction. growth of a seed into a seedling tarn
Pepsi [2]

Answer: I did the research myself since I couldn’t find the answers.

Physical change:

Wax melting from applied heat

Grinding wheat to make flour

Adding copper with gold to make jewelry

Chemical Reaction:

Growth of a seed into a seedling

Making caramel by burning sugar

Tarnishing of silver

Explanation:

Thanks google

4 0
3 years ago
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