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
Eva8 [605]
3 years ago
12

Which can be used to identify an unknown substance: mass, melting point density, volume, state of matter

Chemistry
2 answers:
Akimi4 [234]3 years ago
4 0
Physical properties

the characteristics (properties) that can be observed without changing the identity of a substance

Examples of physical properties

mass, color, size, volume, texture, density, state of matter, boiling point, melting point

inysia [295]3 years ago
4 0

Answer:

Melting point

Density

Explanation:

The mass of any two substance can be same so we can distinguish between one Kg of two different substances based on masses.

The volume is again cannot determine the nature of substance.

Similarly with the state of matter we can rule out some possibilities but it cannot be used to identify the nature of a substance.

However melting point is characteristic of a substance. It can be used to identify the unknown substance. In fact in organic chemistry it is one of the property which helps us to determine the nature of compound.

Density can also be used to identify a compound.

You might be interested in
Determine the rate of a reaction that follows the rate law:
Natali5045456 [20]
A. 0.12 (mol/L)/s

rate = 1 x 10-2 • 2^2 • 3
8 0
3 years ago
Read the description of the motion and decide if the kinetic energy (KE) and the gravitational potential energy (PE) is increasi
SashulF [63]

Answer:

KE increases and PE decreases

7 0
3 years ago
Which gases contribute more significantly to Global warming
sleet_krkn [62]

Answer:

Carbon dioxide

Explanation:

<u><em>A byproduct of fossil fuel combustion, is the principal greenhouse gas contributing to global warming. However, other greenhouse gases including methane, nitrous oxide, and a number of industrial-process gases also are important contributors to climate change.</em></u>

6 0
3 years ago
Consider a sample of 10.0 g of the gaseous hydrocarbon C2H6 to answer the following question: How many moles are present in this
Masja [62]

<u>Answer:</u> The moles of given hydrocarbon is 0.3 moles

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

We are given:

Given mass of ethane = 10.0 g

Molar mass of ethane = [(2\times 12)+(6\times 1)]=30g/mol

We need to divide the given value by the molar mass.

Putting values in above equation, we get:

\text{Moles of ethane}=\frac{10.0g}{30g/mol}=0.3mol

In case of multiplication and division, the number of significant digits is taken from the value which has least precise significant digits. Here, the least precise number of significant digits are 1.

Hence, the moles of given hydrocarbon is 0.3 moles

7 0
3 years ago
In water, bases form _____.
atroni [7]
A base produces hydroxide ion in water
5 0
4 years ago
Read 2 more answers
Other questions:
  • The composition of dry air at sea level is 78.03% N2, 20.99% O2, and 0.033% CO2 by volume. (a) calculate the average molar mass
    12·1 answer
  • Art a what is the kw of pure water at 50.0°c, if the ph is 6.630? what is the kw of pure water at 50.0°c, if the ph is 6.630? 1.
    10·1 answer
  • 14. Which graph (below) accurately illustrates the motion of description A:
    8·1 answer
  • how many electrons (dots or pairs in bonds) should surround each element in a lewis diagram (excluding hydrogen)?
    6·1 answer
  • In the sun, hydrogen is converted to ____________________ through nuclear fusion.
    5·2 answers
  • How do you know your boyfriend loves you
    13·2 answers
  • A 0.223 mole sample of gas is held at 33.0 C and 2.00 atm, What's the volume of the gas? R = 0.0821 L atm / mol K answer soon il
    10·1 answer
  • What are the parts of a water molecule
    6·1 answer
  • How many moles are in 18.3 grams of Carbon? ​
    13·1 answer
  • If a solution contains 20g of glycerol and 5g of coeine, what is the codeine percentage strength of the solution?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!