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
wel
2 years ago
11

2. You have a rock with a volume of 15cm3 and a mass of 45 g. What is its density?

Chemistry
1 answer:
babymother [125]2 years ago
3 0

Answer:

3 g/cm³

Explanation:

Density= Mass divided by Volume

45÷15= 3

You might be interested in
How mant atoms are in 3N2
geniusboy [140]

6N

Explanation:

you times 3 and 2 to get six.

8 0
3 years ago
Read 2 more answers
Write chemical equation for the following reactions. Indicate physical states and write net ionic equations. If no reaction indi
iren [92.7K]

There is no reaction.

<em>Molecular equation :</em>

K₂CO₃(aq) + 2NH₄Cl(aq) ⟶ 2KCl(aq) + (NH₄)₂CO₃(aq)

<em>Ionic equation :</em>

2K⁺(aq) + CO₃²⁻(aq) + 2NH₄⁺(aq) +2Cl⁻(aq) ⟶ 2K⁺(aq) + 2Cl⁻(aq) + 2NH₄⁺(aq) + CO₃²⁻(aq)

<em>Net ionic equation :</em>

Cancel all ions that appear on both sides of the reaction arrow (underlined).

<u>2K⁺(aq)</u> + <u>CO₃²⁻(aq)</u> + <u>2NH₄⁺(aq</u>) +<u>2Cl⁻(aq)</u> ⟶ <u>2K⁺(aq)</u> + <u>2Cl⁻(aq</u>) + <u>2NH₄⁺(aq)</u> + <u>CO₃²⁻(aq)</u>

<em>All ions cancel</em>. There is no net ionic equation.

7 0
3 years ago
What is a covalent compound? physical science?
umka21 [38]
Covalent compounds are formed when non metals bond together.
4 0
3 years ago
Complete the sentences to identify the trend in first ionization energies as one proceeds down the group 7A elements and explain
Harrizon [31]

Answer:

a)decrease

b)increase

c)smaller

d)smaller

Explanation:

Ionization energy decreases down the group due to increase in the atomic radius. The distance between the outermost electron and the nucleus increases hence the nuclear attraction for the outermost electrons become smaller and the ionization energy also become smaller as electrons are now easily removed from the outermost shell.

Hence the group of answer choices provided above.

3 0
3 years ago
When creating a graph, why is appropriate title for a graph important?
OleMash [197]

To let you know what you are working with. if you have a wrong name for a graph then you will get the wrong answer
6 0
3 years ago
Read 2 more answers
Other questions:
  • You work for a cutlery manufacturer who wants to electrolytically precipitate 0.500 g of silver onto each piece of a batch of 25
    10·1 answer
  • What is the speed at which molecules or atoms move dependent on temperature and state of matter.
    9·1 answer
  • 8CO + 17H2 → C8H18 + 8H2O
    5·1 answer
  • A eraser has a mass of 4g and a volume of 2cm3 what is it’s density
    14·1 answer
  • This graph represents a population of molecules in a gas versus the distribution of the average velocity(speed) of its molecules
    6·1 answer
  • What is aluminum’s nuclear charge?
    9·2 answers
  • A substance that dissolves another substance is a _____________________
    11·2 answers
  • Determine whether each phrase describes carboxylic acids or esters.
    12·1 answer
  • Temperature is a measure of how much heat you have in, or around you. is it true or false
    12·1 answer
  • How many neutrons does an atom of Uranium 240?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!