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
-Dominant- [34]
3 years ago
6

Help me please

Chemistry
1 answer:
vredina [299]3 years ago
8 0

Answer:

an atom is the smallest unit of matter or a substance.

Explanation:

the structure of the

atom consists of electrons, protons, neutrons) which makes up the nucleus is more than a hundred thousand times smaller than it's atom but makes up 99.9% of the mass of the atom.

the protons are the positively charged particles. The neutrons are the negatively charged particles. The electrons are the negatively charged particles.

the first energy level consists of two electrons. the second energy level consists of eight electrons. the 3 energy level consists of eighteen electrons. the 4 energy level consists of thirty two electrons.

You might be interested in
This graph represents a population of molecules in a gas versus the distribution of the average velocity(speed) of its molecules
pshichka [43]

Answer:

Part A

Given that the graph is symmetrical and bell shaped, the average kinetic energy is given by the midline of graph, which corresponds to the common speed of the highest number of the population

Part B

The formula for the average kinetic energy, K.E. = (3/2)·(R/NA)·T

Therefore, the part of the graph that indicates the temperature of the sample is the average kinetic energy. K.E.

Part C

At a lower temperature, the heat is less evenly distributed and we have the distribution T2 higher than T1

Please see the attached graph created with MS Visio

Explanation:

3 0
3 years ago
In a chemical reaction, an iron atom became the ion Fe2+. What happened to the iron atom?
Arada [10]
A.It lost electrons and was oxidized. 
3 0
4 years ago
Read 2 more answers
A flexible container at an initial volume of 5.120 L contains 8.500 mol of gas.
SOVA2 [1]

Answer:

30.05 mol

Explanation:

solving the proportion

V1 / n1 = V2 / n2

5.120 L            18.10 L

–––––––– = ––––––

8.500 mol         x

x = 30.05 mol

6 0
3 years ago
Use the periodic table to select which type of bond is present and which of the listed properties is most likely for each substa
jenyasd209 [6]

Answer:

A = Metallic Bond

B = Strong bonding, strong conductor, high melting and boiling points

Explanation:

Since the bond is between two metals (located in groups 11 and 12), they would experience metallic bonding. Metallically bonded molecules have high melting and boiling points due to the strength of the metallic bond. They also experience strong electrical current due to the there delocalized electrons.

3 0
3 years ago
Which of the following elements is most likely to form an ion that will then form an ionic bond with an ion of a Group 1A elemen
solniwko [45]
Group 1A (the alkali metals) almost always form cations (positive ions). They'd need anions (negative ions) to ionic bond with. Beryllium (Be) is group 1A already and forms Be+ cation. Bromine is a halogen, and forms Br-, an anion. Platinum is a metal, and usually won't ionic bond with anything. Francium is rare and highly radioactive, plus it so happens to be group 1A as well. Only bromine can form the anion that the group 1A cations need.
3 0
3 years ago
Other questions:
  • Flavor enhancer chemical formula
    5·1 answer
  • Hypothesis: Which materials do you think will meet the special needs of Parvus' house? Use the drop-down selections to create yo
    14·1 answer
  • If a satellite or spaceship explodes in outer space, you can see the explosion from a distance but you cannot hear it. Why?
    10·2 answers
  • List the things that are made of one or more molecules.​
    11·1 answer
  • 1. Adam found a block made of lead. The density of lead is 11.36 g/cm3. The lengths of the block's sides are 3.5 cm, 3.6 cm, and
    9·1 answer
  • Iron and Oxygen form rust. Compare the mass of iron and oxygen before the reaction with the mass of rust resulting from the reac
    9·2 answers
  • When copper metal is heated to 1100 oC it melts. Is this a chemical or physical change? Explain your answer
    5·2 answers
  • How much heat will a 45.00 g piece of glass require to change its temperature from 10 to 30 °C. The specific heat capacity is 0.
    5·1 answer
  • Of the following compounds, which has the strongest dipole?
    10·1 answer
  • What is the mass of 2.9 moles of calcium? Show all work!
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!