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
Alona [7]
3 years ago
7

Which of the following are observations? The candle floats. The tires are flat. The dog is barking. The tire is flat because of

a decrease in temperature. If a person walks by, then the dog will bark.
Chemistry
2 answers:
matrenka [14]3 years ago
8 0

Answer:

The first three statements, that is, the candle floats, the tires are flat, and the dog is barking are observations.

Explanation:

Observation refers to the process or action of observing someone or something cautiously in order to attain a certain kind of information. Thus, the first three given statements are examples of observations, while the last two statements imply the concept of cause-effect relationships. The cause and effect refer to an association between the things or the incidents, where one is the outcome of the other or the others. This is an amalgamation of action and reaction.

Liula [17]3 years ago
6 0
Everything but "<span>The tire is flat because of a decrease in temperature" is an observation.</span>
You might be interested in
What is the oxidation state of the underlined atom in the reaction:
kvasek [131]

Answer:

+5

Explanation:

Let's consider the following balanced equation.

Mn(NO₃)₂ + 2 HCl --> MnCl₂ + 2 HNO₃

We can determine the oxidation number of N in (NO₃)₂²⁻ taking into account that the sum of the oxidation numbers of the elements present in a chemical species is equal to this overall charge. For this compound we know:

  • The oxidation number of O is -2.
  • The overall charge is 2-.
  • We have 2 atoms of N and 2× 3 = 6 atoms of O.

2 N + 6 O = 2-

2 N + 6 (-2) = 2-

2 N = +10

N = +5

6 0
3 years ago
An oxide of phosphorus contains 56.4% phosphorus and 43.6% oxygen. It's relative molecular mass is 220. Find both the empirical
sladkih [1.3K]
Moles of P = 56,4g/30,974g/mole = 1,82 moles P
moles of O = 43,6/15,999 = 2,73 moles of O

converting to the simplest ratio:
For P : 1,82/1,82 = 1
For O : 2,73/1,82 = 1,5

1 P and 2 oxygens.
PO2 -> the empirical formula

hope this help
7 0
3 years ago
Read 2 more answers
Which statement related to particle and wave properties of matter is correct? a. Interference patterns are observed when a wave
DerKrebs [107]

Answer:

a. Interference patterns are observed when a wave passes through a barrier with two slits

Explanation:

Interference is a situation where two waves superimpose to form a new wave of a different amplitude. This amplitude can be greater, same or lower.

the diagram attached below shows the movement of a wave through a barrier with two slits.

you can notice the portions of the wave that overlap. This overlapping of waves is the interference.

Thus, option A is correct.

The other options however,  are not correct. as shown below:

Option B is wrong as waves exhibit diffraction <em>(it is diffraction of the light wave that produces the rainbows we see in the sky)</em>

Option C is wrong as waves do not travel straight through slits always.

Option D is wrong as waves can also interfere constructively and destructively.

7 0
4 years ago
Please help I will give brainliest!!!
anyanavicka [17]
Need a picture for reference
7 0
3 years ago
Why is water so important for the ecosystem
puteri [66]

Answer:

The main function of water is to enhance the plant growth provide a permanent for species that live within it, or provide a temporary home or breeding ground for multiple amphibians, insects and water-birthed organismsand to provide the nutrients and minerals necessary to sustain physical life.

4 0
3 years ago
Read 2 more answers
Other questions:
  • A solution of acetic acid is prepared in water by adding 11.1 g of sodium acetate to 200 ml of water. The final ph is measured t
    12·1 answer
  • Hugh described two substances which participate in photosynthesis.
    5·2 answers
  • What is the molar mass of calcium oxide
    15·1 answer
  • HELP ASAP WILL MARK BRAINLYIST Which of the following is created when solids, liquids, or gases mix with one another? Mixture El
    8·2 answers
  • Pls help
    5·1 answer
  • Chose the molecular formula that represents an organic molecule.
    13·1 answer
  • Question 22
    15·1 answer
  • How long does it take Earth to make one rotation on its axis?
    9·1 answer
  • Why do you think the older scientist disregarded the younger scientist's prediction?
    12·2 answers
  • What will most likely happen when stress is applied to an equilibrium reaction?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!