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worty [1.4K]
2 years ago
10

What is an example in which a scientists might calculate the mean of a data set

Chemistry
1 answer:
gayaneshka [121]2 years ago
3 0
An example is just when they have a a group o numbers, for any reason, and they want to find the average of then all

an example being um idk...numbers resulting from an experiment trying to find different densitys or something and they wanted to find the average density
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On the basis of chemical structure, which solid will most easily conduct electricity?
Marizza181 [45]

Answer:

Fe

Explanation:

The electrical conductivity depends mainly on the type of chemical bonds between the atoms of a compound.

In the case of MgF2, FeCl3 and FeO3, these have the type of ionic bond. This means that in the atoms of the compound there is an electron transfer, to keep eight electrons in the outermost layer and thus resemble the electronic configuration of the inert gas closest to each of the two elements, due to this ions of opposite charges are formed that are held together by electrostatic forces. These types of compounds are good conductors of electricity, however, to have this property, they must be dissolved in water or molten.

In the case of Fe, however, the type of union between atoms is metallic. In this type of junction, valence electrons are quite free inside the metal, which makes it easy for them to move. For this reason, this compound will conduct electricity in a solid state.

6 0
2 years ago
Enter the expression 147N α, where α is the lowercase Greek letter alpha
GuDViN [60]

Core reactions that occur:

¹⁴₇N + ⁴₂He → ¹⁷₈O + ¹₁H

Can be written :

¹⁴₇N (α, H) ¹⁷₈O  , α = ⁴₂He

<h3>Further explanation </h3>

Fusion and fission reactions are reactions involving atomic nucleus reactions

Fission reaction is a nucleation division reaction by firing a particle usually neutron so that it gets smaller particles of atomic nuclei.

A fusion reaction is a combining reaction of 2 atomic nuclei. Usually what is often used is a reaction between the hydrogen isotope that will form Helium

At the core, the reaction applies the law of eternity

  • 1. energy

the energy before and after the reaction is the same

  • 2. atomic number

the number of atomic numbers before and after the same

  • 3. mass number

the number of mass numbers before and after the same

Particles that play a role in core reactions include

  • alpha α particles ₂He⁴
  • beta β ₋₁e⁰ particles
  • gamma particles γ
  • positron particles ₁e⁰

In general, the core reaction equation can be written:

<h3> X + a ---> Y + b + Q </h3>

X = target core

a = particle fired

Y = new core

b = the particle produced

Q = heat energy

or can be written simply

<h3> X (a, b) Y </h3>

In the ¹⁴₇N atomic nucleus, a fusion reaction occurs with ⁴₂He which produces isotopes of Oxygen and ¹₁H protons.

¹⁴₇N + ⁴₂He → ¹⁷₈O + ¹₁H

This reaction can be written down

¹⁴₇N (α, H) ¹⁷₈O

<h3> Learn more </h3>

the half-life of the element Lokium

brainly.com/question/13091874

nuclear decay reaction

brainly.com/question/4207569

Plutonium - 239

brainly.com/question/10125168

Keywords: Fusion and fission reactions, alpha ₂He⁴, nuclei

7 0
2 years ago
Read 2 more answers
Consider the reaction below. 2Al2O3 4Al + 3O2 How many moles of oxygen are produced when 26.5 mol of aluminum oxide are decompos
Aloiza [94]

 The moles  of  oxygen  that are produced when 26.5 mol  of Al2O3  decomposes  is  39.8 mol


<u>calculation</u>

<u> </u> 2Al2O3  + 4Al +3 O2


  •  use the mole  ratio  of Al2O3  to O2  to determine the moles of  O2.
  • that is   from  the  equation above the mole ratio of Al2O3 : O2 is 2:3  
  • the moles of O2  is therefore=n 26.5 mol  x3/2= 39.8  moles
3 0
2 years ago
Read 2 more answers
15)A photon has a frequency of 2.68 x 106 Hz. Calculate its energy.
Verizon [17]

Answer:

Explanation:

A photon has a frequency (ν) of 2.68 x 10. 6. Hz. ... Calculate the energy (E) and wavelength (λ) of a photon of light with a frequency (ν) of 6.165 x 10. 14 ... Calculate the wavelength and energy of light that has a frequency of 1.5 x 10. 15. Hz.

4 0
2 years ago
Read 2 more answers
What volume of a 0.452 m naoh solution is needed to neutralize 85.0 ml of a 0.176 m solution of h2so4?
ArbitrLikvidat [17]

H2SO4 + 2 NaOH ----> Na2SO4 + 2 H2O.


0.085 L * 0.176 mol/L = 0.01496 mol H2SO4

is neutralised by 0.01496 mol * 2

= 0.02992 mol NaOH.


1000 mL of 0.492 M NaOH

contains 0.492 moles NaPH.


0.02992 / 0.452 * 1000 mL

= 66.19 = 66 mL

6 0
2 years ago
Read 2 more answers
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