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
nignag [31]
3 years ago
15

Students can use _________ to distinguish pure substances, such as elements and compounds with a constant composition, from othe

r substances. A) color B) density C) particle size D) state of matter
Chemistry
2 answers:
Stella [2.4K]3 years ago
6 0

Answer is: B) density.

Pure substance is made of only one type of atom or only one type of molecule, it has definite and constant composition with distinct chemical properties.

Mixtures are physical combinations of pure substances that have no definite or constant composition.

With constant composition density of pure substance is always the same and in other substances it can vary according the composition.

Density is a measure of mass per unit of volume.

The SI derived unit for density is the kilogram/cubic meter, but chemist usually use gram per cubic centimeter.

ollegr [7]3 years ago
3 0
Density ........on god thats the answer
You might be interested in
What kind of energy is required for photosynthesis to occur​
Makovka662 [10]

Answer:

light energy to convert carbon dioxide and water into glucose and oxygen gas. Each molecule of glucose essentially “stores” up to 38 molecules of ATP which can be broken down and used during other cellular reactions.

Explanation:

6 0
3 years ago
Read 2 more answers
1. When the following oxidation-reduction reaction in acidic solution is balanced, what is the
borishaifa [10]
A. 1
B. 4
C. 5
D. 3
E. 2

The correct answer is E. 2
8 0
2 years ago
What element has 80 protons, 81 neutrons, 79 electrons?
Mariana [72]

Answer:

The element will be ^{161}_{80}X

Explanation:

Given that,

Number of proton = 80

Number of neutron = 81

Number of electron = 79

We know that,

The atomic number is equal to the number of proton.

So, the atomic number is 80.

According to atomic number,

The element will be mercury.

We need to calculate the atomic mass

Using formula of atomic mass

atomic\ mass=atomic\ number+number\ of\ neutron

Put the value into the formula

atomic\ mass=80+81

atomic\ mass=161

We need to find the element

Using atomic mass and atomic number

atomic\ mass\ number A=161

atomic\ number Z=80

So, the element will be

^{A}_{Z}X

Put the value of A and Z

Hence, The element will be ^{161}_{80}X

5 0
3 years ago
A. What is an atom's electron configuration?
Tju [1.3M]

Answer:

It is the distributions of electron on the three levels

Explanation:

The three levels are : K . L . M . N

5 0
2 years ago
Read 2 more answers
2 Calculate What is the density of a liquid with a mass of 17.4g<br> and a volume of 20 mL?
jolli1 [7]

Answer:

P= 0.87g/mL or 0.87g/cm^3

Explanation:

P=m/v

P=density

P=17.4g/20mL

P= 0.87g/mL

1mL=1cm^3

8 0
3 years ago
Other questions:
  • 2. Water is a great example of a molecule with polar covalent bonds. How does this bond affect the
    10·2 answers
  • ANSWER FIRST GET BRAINLIEST
    8·2 answers
  • You can decide if a paint booth filter is hazardous waste by answering which of the following questions:
    6·1 answer
  • Help Me Please
    8·2 answers
  • at standard pressure how do the boiling point and the freezing point of NaCl compare to the boiling point and freezing point of
    15·1 answer
  • What is the electron configuration of an element with atomic number 20? A. 1s2 2s2 2p6 3s2 3p5 B. 1s2 2s2 2p6 3s2 3p6 C. 1s2 2s2
    5·2 answers
  • Two closed vessels contain chlorine gas at the same conditions of temperature and
    13·1 answer
  • The base that will NOT combine with 2-deoxyribose to form a nucleic acid is _____.
    12·1 answer
  • what bodyy system Filters waste materials (esp. nitrogenous wastes) from blood; maintain water, salt, acid/base, &amp; ion balan
    8·1 answer
  • How much energy is required to convert 400 g of ice at 0 °C to liquid water at 0 °C?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!