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
Zolol [24]
3 years ago
13

An observation that is written as a number or amount?

Chemistry
1 answer:
beks73 [17]3 years ago
3 0

Answer: A quantitative observation

Explanation: Quantitative observations deal with numbers or amounts. As opposed to <em>qualitative</em> observations, which are observations made with the 5 senses.

You might be interested in
A cheetah has been clocked at 112 km/h over a 100-m distance. What is this speed in m/s?
Serhud [2]
M/sec = 112 km / 1 hr / 1 min / 1000 meters
hr / 60 min / 60 sec / 1 km

So the answer is = 31.1 meters/sec
8 0
3 years ago
If an atom has 4 protons, 5 neutrons, and 4 electrons, what would its atomic mass be?
Rina8888 [55]

Answer:

4

Explanation:

If I remember correctly, the atomic # will always be the same as the # of electrons

8 0
3 years ago
How many moles of aluminum oxide will be formed from 17 moles of aluminum reaction?
Ainat [17]

Answer:

8.5 moles of Al₂O₃ will formed

Explanation:

Given data:

Number of moles of Al = 17 mol

Number of moles of Al₂O₃ formed = ?

Solution:

Chemical equation:

4Al  +  3O₂     →     2Al₂O₃

Now we will compare the moles of Al₂O₃  with Al.

                  Al            :            Al₂O₃      

                   4            :              2

                   17           :            2/4×17 = 8.5 mol

8.5 moles of Al₂O₃ will formed.    

7 0
3 years ago
Which two statements about redox reactions are true?
Mars2501 [29]

Answer:

D

Explanation:

Reduction is a gain of electrons, oxidation is a loss of electrons, and electron transfer reactions are also called redox reactions.

this link might be helpful

https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Supplemental_Modules_(Analytical_Chemistry)/Electrochemistry/Redox_Chemistry/Oxidation-Reduction_Reactions          

4 0
3 years ago
Read 2 more answers
(MARK BRAINLEST) PLEASE HELP ASAP: Network covalent solids have an unusual structure. Describe how they are formed, and give two
Amiraneli [1.4K]

Answer:

Covalent network solids are formed by networks or chains of atoms or molecules held together by covalent bonds. Consists of sp3 hybridized carbon atoms, each bonded to four other carbon atoms in a tetrahedral array to create a giant network. Examples of network covalent solids include diamond and graphite (both allotropes of carbon), and the chemical compounds silicon carbide and boron-carbide.

4 0
3 years ago
Other questions:
  • Tarnish on tin is the compound SnO. A tarnished tin plate is placed in an aluminum pan of boiling water. When enough salt is add
    12·1 answer
  • What is the definition of a skeleton equation?
    14·1 answer
  • Weighted averages, help please
    5·1 answer
  • How is the telegraph you made like the one morse made?
    7·1 answer
  • What keeps the Earth's atmosphere from floating away?
    7·2 answers
  • Two waves are traveling through the same container of air. Wave A has a wavelength of 2.0m. Wave B has a wavelength of 0.5m. The
    7·2 answers
  • if 12 molecules of methane reacted with plenty of oxygen, we should expect to produce____ molecules of car on dioxide and _____
    14·1 answer
  • Is the electron configuration given below for an inert gas, a halogen, an alkali metal, an alkaline earth metal, or a transition
    13·1 answer
  • Thermal radiation emitted by objects allows us to feel infrared<br> energy as _____
    7·1 answer
  • Which two changes would make this reaction product-favored? 3H2 + N2 ⇄ 2NH3 + energy  A. Decreasing the pressure  B. Increasin
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!