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
igor_vitrenko [27]
3 years ago
12

When may a scientific theory be revised?

Chemistry
2 answers:
nlexa [21]3 years ago
8 0

Answer: Multiple answers to this question. This is what I comprehend.

Explanation:

Upon analysis of the results, a theory can be rejected or modified, but it can never be proven to be correct 100 percent of the time. For example, relativity has been tested many times, so it is generally accepted as true, but there could be an instance, which has not been encountered, where it is not true.

Anika [276]3 years ago
6 0

Answer:

it can be revised at any time.

Explanation:

You might be interested in
A sample of propane(c3h8)has 3.84x10^24 H atoms.
deff fn [24]

Answer:

A) 14. 25 × 10²³ Carbon atoms

B) 34.72 grams

Explanation:

1 molecule of Propane has 3 atoms of Carbon and 8 atoms of Hydrogen.

The sample has 3.84 × 10²⁴ H atoms.

If 8 atoms of Hydrogrn are present in 1 molecule of propane.

3.84 × 10²⁴ H atoms are present in

\mathfrak{ \frac{3.8 }{8} \times 10 ^{24}}

<u>= 4.75 × 10²³ molecules of Propane</u>.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

No. of Carbon atoms in 1 molecule of propane = 3

=> C atoms in 4.75× 10²³ molecules of Propane = 3 × 4.75 × 10²³

<u>= 14.25 × 10²³ </u>

<u>________________________________________</u>

<u>Gram</u><u> </u><u>Molecular</u><u> </u><u>Mass</u><u> </u><u>of</u><u> </u><u>Propane</u><u>(</u><u>C3H8</u><u>)</u>

= 3 × 12 + 8 × 1

= 36 + 8

= 44 g

1 mole of propane weighs 44g and has 6.02× 10²³ molecules of Propane.

=> 6.02 × 10²³ molecules of Propane weigh = 44 g

=> 4. 75 × 10²³ molecules of Propane weigh =

\mathsf{ \frac{44 }{6.02 \times  {10}^{23} } \times 4.75 \times  {10}^{23}  }

\mathsf{  = \frac{44 }{6.02 \times   \cancel{{10}^{23} }} \times 4.75 \times \cancel{ {10}^{23}}  }

\mathsf{  = \frac{44 }{6.02 } \times 4.75   }

<u>= 34.72 g</u>

8 0
2 years ago
Hydrogen has three naturally occurring isotopes which figure into the average atomic mass found on the periodic table (1.00974):
Art [367]
The number following the name of the element is the number of subatomic particles inside the nucleus of the atom. This means that it is the mass number of the isotope. The average atomic mass of the element is the sum of the products of the percentage abundance and mass number of the naturally occurring isotopes. 

Since, the average atomic mass of the hydrogen is nearest to 1 then, the most abundant isotope should be hydrogen-1. 
8 0
3 years ago
Which element has exactly five electrons in the highest principal energy level (the outer shell)?
statuscvo [17]
This question is asking for an element with 5 valence electrons.  Just go to the row it is in (excluding transition metals) and count over.  
The answer would be c. P
7 0
3 years ago
Read 2 more answers
What are examples of chemical properties?
pochemuha
Reactivity could be one also toxicity flammability ect

6 0
3 years ago
Water is found in which of the following states at earth's surface?
MAXImum [283]
B because those are the elements
8 0
3 years ago
Read 2 more answers
Other questions:
  • A thermos contains 150 cm3 of coffee at 85 ????C. To cool the coffee, you drop two 11-g ice cubes into the thermos. The ice cube
    12·1 answer
  • A mixture of hydrogen and argon gases is maintained in a 6.47 L flask at a pressure of 3.43 atm and a temperature of 85 °C. If t
    15·2 answers
  • An element is matter that is composed of one type of (atom/quark). 8. the unit of measurement used for atomic particles is the (
    15·1 answer
  • Be sure to answer all parts. Consider the reaction N2(g) + 3H2(g) → 2NH3(g)ΔH o rxn = −92.6 kJ/mol If 3.0 moles of N2 react with
    11·1 answer
  • Scientific evidence is most likely to be consistent if it is based on data from
    9·2 answers
  • How did life begin??✯✯✯✯✯✯​
    7·1 answer
  • Many large and small rocks are found under glaciers. Explain how these rocks are both weathered and eroded.
    8·2 answers
  • Which ingredients produce the best bar for growth and repair?
    15·1 answer
  • Why do you think Earth's plates move on the surface?
    8·2 answers
  • Methane (CH4), is said to be the cleanest burning fossil fuel. When burned, it releases carbon dioxide gas and forms water. Usin
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!