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
Nookie1986 [14]
3 years ago
7

HELP PLEASE I DONT KNOW WHAT THIS MEANS IM CONFUSED

Chemistry
1 answer:
Zielflug [23.3K]3 years ago
5 0

Explanation:

In an alpha emission, an alpha particle is ejected from a large nucleus. An alpha particle is simply a helium nucleus (atomic number is 2 and mass number is 4) so that means that the atomic number of the emitting nucleus decreases by 2 and its mass number decreases by 4.

You might be interested in
Which of the following experimental observations proved that the idea of matter and mass being evenly distributed in an atom was
Ksenya-84 [330]

A. Less than 1% of the alpha particles went un-deflected through the gold foil.

7 0
3 years ago
Read 2 more answers
For Mn3+, write an equation that shows how the cation acts as an acid.
Mkey [24]

An acid is a compound which will give H+ ions or H3O^+  ions

the reaction will be

[Mn(H_{2}O )_{6} ^{+3} +H_{2}O --> [MnOH(H_{2}O)_{5}]^{+2} + H_{3}O^{+}

Thus as there is evolution of H_{3}O^{+} the Mn+3 is an acid

8 0
2 years ago
Read 2 more answers
What floats on top of molten magma under the earth’s surface?.
elena-s [515]

Explanation:

Earthquakes. are caused by the earth's crust, more specifically, tectonic plates that float on top of molten magma. These plates bump into each other. it's the answer Earthquakes.

5 0
2 years ago
How many valence electrons are in a stable ion of a period 4 metal?
marusya05 [52]
What kind of metal is it
8 0
3 years ago
Chemical formula for sodium and sulfur
Nookie1986 [14]
The chemical formula for sodium and sulfur is Na2S I believe...
8 0
2 years ago
Other questions:
  • An equilibrium mixture of CO, O2 and CO2 at a certain temperature contains 0.0010 M CO2 and 0.0100 M O2. At this temperature, Kc
    11·2 answers
  • A high gold-quartz ore contains is 0.25% gold by mass. how many grams of gold are in 1.25 tons of this ore?
    11·1 answer
  • How many atoms are in 55g of H2SO4?<br> 3.4 atoms<br> 2.58 atoms<br> 04.14 atoms<br> 98.1 atoms
    10·2 answers
  • In which of the substances in Figure 3-1 are the forces of attraction among the particles so weak that they can be ignored under
    13·2 answers
  • Can someone balance this equation???
    6·1 answer
  • Which phrase explains how a range of fault-block mountains forms? O A. Shear forces cause large earthquakes to happen often and
    5·1 answer
  • Why are there multiple ways to represent molecules
    6·1 answer
  • 1. What is the relationship between pressure and volume?
    10·2 answers
  • Do you have any ideas for a sodium poster project other than a salt shaker?
    7·1 answer
  • Nitrogen (N), phosphorus (P), and potassium (K) are the main nutrients in plant fertilizers. By industry convention, the numbers
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!