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
slamgirl [31]
3 years ago
7

☝️☝️☝️help☝️☝️☝️!!!!

Chemistry
1 answer:
nataly862011 [7]3 years ago
7 0
8. A. Density is independent of size (an intensive property).
9. B. The highest density is 1786 g/20cm^3, or 89.3 g/cm^3. The least is 512 g/20cm^3, or 25.6 g/cm^3. Therefore, the difference is 89.3 - 25.6, or 63.7 g/cm^3.
10. C. A bottle filled with air weighs less than one filled with marshmallows, because air is less dense than marshmallows.
11. D. The number represents the number of protons in the nucleus of the atom, as well as the atomic number of the element.
12. C. The number represents the atomic mass of the element, which is determined based on the relative abundance of each form of the element.
You might be interested in
How can I differentiate between Ionic compounds, molecular compounds, and acids given only the formula? I need to be able to fin
VikaD [51]
You can differentiate between ionic, covalent and molecular compounds by the fact that ionic compounds contain elements that include both a metal and a nonmetal. Molecular compounds contain both non metals covalently bonded to each other. While acids most often on their chemical formula start with the element of Hydrogen - H.

For Eg - sulphuric acid
H2SO4
hydrochloric acid - HCl.
7 0
3 years ago
Most marble is composed primarily of
KatRina [158]

Answer:

It is composed primarily of the mineral calcite (CaCO3) and usually contains other minerals, such as clay minerals, micas, quartz, pyrite, iron oxides, and graphite.

Explanation:

Marble can be otherwise called metamorphic rock which is formed as a result of heat application on limestone and pressure of metamorphism. It is composed primarily of the mineral calcite (CaCO3) and usually contains other minerals, such as clay minerals, micas, quartz, pyrite, iron oxides, and graphite.

8 0
3 years ago
Read 2 more answers
What is the mass of an atom with 8 protons, 8 electrons, and 8 neutrons?
mafiozo [28]

Answer:An oxygen atom usually has 8 protons, 8 neutrons, and 8 electrons. Looking at the periodic table, oxygen has atomic number 8 and atomic weight 15.999.

Explanation:

5 0
2 years ago
Sam investigates the reactivity of metals in air. His observations are shown below.
viva [34]

Answer:5

Explanation:

6 0
3 years ago
Read 2 more answers
Why do solids have a fixed shape?
KIM [24]
D. The particles are tightly packed together
5 0
3 years ago
Read 2 more answers
Other questions:
  • How many atoms of hydrogen are in 0.56 mol of (NH4)2SO4
    13·1 answer
  • In order for scientific notation to be correct, the base must be
    11·1 answer
  • A buffer is prepared by dissolving 0.80 moles of NH3 and 0.80 moles of NH4Cl in 1.00 L of aqueous solution. If 0.10 mol of NaOH
    15·1 answer
  • WILL GIVE BRAINLIEST. How does Earth's distance from the sun make it advantageous for supporting life?
    5·1 answer
  • SUBSTANCE
    15·1 answer
  • What are the three states of matter?
    6·1 answer
  • Energy conversions _____. can lose energy as sound can be 100 percent efficient if controlled properly are calculated by multipl
    6·2 answers
  • Once again rocks and/or minerals
    9·2 answers
  • Can someone Help pls :)
    6·1 answer
  • When does an object move<br><br>​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!