1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Readme [11.4K]
3 years ago
6

The model of the atom that describes electrons scattered throughout a ball positive charge was proposed by

Chemistry
1 answer:
Novay_Z [31]3 years ago
8 0
It was proposed by J.J Thompson. 
You might be interested in
What is the <br>formula and valency of <br> thiosulphate ​
tatuchka [14]
Formula: NA2S2O3. Valency: 2
6 0
3 years ago
how is substitution reaction in alkanes different from dehydrogenation reaction since both involve removing a hydrogen atom from
Ilia_Sergeevich [38]

Answer:

See Explanation

Explanation:

A substitution reaction means the replacement of one or more hydrogen atoms in an alkane by another atom or group. It does not introduce a double bond into the product. The product retains single bonds between the species present.

For instance;

CH4 + Cl2 -------> CH3Cl +HCl

is a substitution reaction

Dehydrogenation is the process of removing two hydrogen atoms from a saturated compound compound thereby yielding an unsaturated product.

E.g

C2H6 --------->C2H4 + H2

The key difference is that substitution reaction yields a saturated product while dehydrogenation yields an unsaturated product.

8 0
2 years ago
What does the 32.06 represent?
lana [24]

The 32.06 represent The atomic mass, the average number of protons & neutrons

<h3>Further explanation </h3>

The Atomic Number (Z) indicates the number of protons in an atom of an element. If the atom is neutral then the number of protons will be equal to the number of electrons. So the atomic number can also indicate the number of electrons.

So atomic number = number of protons = number of electrons

Mass Number (A) is the sum of protons and neutrons

Mass Number (A) = Number of protons + Number of Neutrons

So that the relationship between atomic numbers and mass numbers can be formulated as follows:

Atomic Number (Z) = Mass Number (A) - Number of Neutrons

In the following element notation,

\large {{{Z} \atop {A}} \right X}

X = symbol of elemental atom

A = mass number

   = number of protons + number of neutrons

Z = atomic number

   = number of protons = number of electrons, on neutral elements

4 0
3 years ago
Propane (c3h8) is burned in oxygen to produce carbon dioxide and water. the heat of combustion of propane is -2012 kj/mole. how
Olegator [25]
C_{3} H_{8} + 5 O_{2} ---\ \textgreater \  3CO_{2}  +4H_{2}O    (-2012 \frac{kJ}{mol} )&#10;&#10;&#10;3 mol                10 mol&#10;&#10;&#10;C_{3}H_{8} is /excess /reactant&#10;&#10;because 3 mol propane require 15 mol oxygen (by reaction)&#10;&#10;5 mol oxygen ---1 mol propane, so&#10;&#10;10 mol oxygen ---2 mol propane&#10;&#10;Only 2 mole propane will be burned,&#10;&#10;so &#10;&#10;2012 ( kJ/mol)*2 mol =4024 KJ heat will be given off&#10;&#10;Correct answer is number 4.&#10;&#10;&#10;
5 0
2 years ago
How many atoms of Sn are in 0.796 moles of this element?
garik1379 [7]

Answer:

savsdfasfsewce

Explanation:

afsfsfdsfesdfsdgsdgdg

3 0
3 years ago
Other questions:
  • CHEM HELP!
    14·1 answer
  • Describes changes<br> in energy during a chemical reaction?
    5·1 answer
  • Explain why the temperature of water might increase when a solution forms
    6·1 answer
  • Select true or false: substitute natural gas can be synthesized by passing carbon monoxide and hydrogen over ni or co at 400°c.
    6·1 answer
  • How many experimental trials are needed before a hypothesis can be accepted as true ?
    6·2 answers
  • The circumference of a circle is  feet. What is the length of the radius of this circle? 
    12·2 answers
  • A chemistry student needs 65.0g of methyl acetate for an experiment. By consulting the CRC Handbook of Chemistry and Physics, th
    14·1 answer
  • Which statement best describes a solution? a mixture consisting of minute particles suspended in a medium that start moving abou
    7·1 answer
  • Which sentence is a scientific statement?
    10·2 answers
  • How much heat is required to change 56.0 g of ice (H2O) at 263 K to vapor (steam) at 400 K?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!