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
jeka94
3 years ago
10

Describe some tests that could be done to determine what an unknown substance is.

Physics
2 answers:
valentina_108 [34]3 years ago
6 0

Answer:

Simple chemical tests can be used to identify the presence of various elements or classes of molecules (Tollen's test). ... Electron spin resonance (ESR): Also referred to as electron paramagnetic resonance (EPR), this method uses the spins of unpaired electrons in molecules to determine structure

natima [27]3 years ago
3 0

Answer:

by finding melting and boiling points

Explanation:

You might be interested in
How do matter and energy interact?
Semmy [17]

Biology involves living systems that interact with each other and with the environment. Like chemical processes, biological processes involve the transfer or sharing of electrons among atoms and the interaction of atoms and molecules with electromagnetic energy.

8 0
3 years ago
Read 2 more answers
Why meter cube is called derived unit<br>​
gregori [183]

Answer:

Because it is the result of two more fundamental units, a derived unit is termed that. For volume, the cubic meter (m³) is the fundamental unit of area. Any number that cannot be measured directly with any equipment is referred to as a derived unit. For example, we can't quantify a substance's density using a rule, scale, or bucket.

OAmalOHopeO

7 0
3 years ago
Read 2 more answers
Use the fact that the speed of light in a vacuum is about 3.00 × 108 m/s to determine how many kilometers a pulse from a laser b
Morgarella [4.7K]
The first thing that needs to be done is to find everything in the same units.  12 hours becomes 43200 seconds.  Then find the distance traveled by light in that amount of time.  Using the formula v=d/s, manipulate it so it looks like d=v*s.  Then plug in the values: d=(3x10^8)*43200,  d=1.3x10^13m.  But you need to find this in kilometers.  To do this, simply divide your answer by one thousand.  Thus, a laser beam would travel 1.3x10^10 kilometers in 12 hours.
5 0
4 years ago
What happens to an object at rest if balanced forces act upon it?
Ilya [14]

3

Explanation:

it will collide then friction will slow it down

4 0
3 years ago
What are the 4 categories that makes the human body
Dominik [7]

Answer:

epithelial, muscle, nervous, and connective tissues.

Explanation:

3 0
3 years ago
Other questions:
  • A ball rolling down a ramp accelerates from 0 m/s to 40 m/s in 10 seconds. What is its acceleration?
    14·2 answers
  • The electric potential inside a charged spherical conductor of radius R is is given by V = keQ/R, and the potential outside is g
    11·1 answer
  • What is the answer ?
    13·1 answer
  • Two Forces Of Magnitude 20N Each Are Acting At 30 And 60 degree with xAxis the Y Component Of The Resultant Force Is
    15·1 answer
  • A package of aluminum foil is 59.3 yd long, 13 in. wide, and 0.00040 in. thick. If aluminum has a density of 2.70 g/cm3, what is
    14·1 answer
  • Why is Saturn almost as big as Jupiter, despite its smaller mass?
    11·1 answer
  • What is the prefix notation of 0.0000738?​
    11·2 answers
  • A marble is thrown horizontally with a speed of 7 m/s. When the marble lands, it hastraveled a horizontal displacement of 30 m.
    8·1 answer
  • If i weigh 100 ibs on earth how much do i weight on uranus
    8·1 answer
  • a mass m at the end of a spring oscillates with a frequency of 0.78 hz . when an additional 730 g mass is added to m, the freque
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!