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
Harrizon [31]
3 years ago
8

When do scientist rely on estimates

Chemistry
2 answers:
Brut [27]3 years ago
7 0
Scientist rely on their estimates when they cannot obtain on exact numbers 

Temka [501]3 years ago
4 0

Answer:

The correct answers will be- when the scientists do not not get the expected results in the form of the exact numbers.

Explanation:

Estimation is the process of approximation based on the uncertain or unexpected, unstable and incomplete data.

The process of estimation is sometimes followed by the scientists like when predicting the exact age of the Earth or the evolutionary facts of species which is impossible to predict and the data does not provide the exact numbers.

Thus, scientist relies on estimated when they do not get the expected results in the form of exact numbers.

You might be interested in
Fluorine (F) and bromine (Br) are in the same group on the periodic table. How do atoms of these elements compare when they form
mojhsa [17]

Answer is: Both a fluorine atom and a bromine atom gain one electron, and both atoms become stable.

Fluorine and bromine are in group 17 in Periodic table of elements. Group 17 (halogens) elements are in group 17: fluorine (F), chlorine (Cl), bromine (Br) and iodine (I). They are very reactive and easily form many compounds.

Halogens need to gain one electron to have electron cofiguration like next to it noble gas.

Fluorine has atomic number 9, it means it has 9 protons and 9 electrons.

Fluorine tends to have eight electrons in outer shell like neon (noble gas) and gains one electron in chemical reaction.

Electron configuration of fluorine: ₉F 1s² 2s² 2p⁵.

Electron configuration of neon: ₁₀Ne 1s² 2s² 2p⁶.



3 0
3 years ago
Read 2 more answers
describe in general terms an experiment to determine the molal freezing point depression constant kf of water. Assume the availa
Dvinal [7]
A solution (in this experiment solution of NaNO₃) freezes at a lower temperature than does the pure solvent (deionized water). The higher the solute concentration (sodium nitrate), freezing point depression of the solution will be greater.
Equation describing the change in freezing point: 
ΔT = Kf · b · i.
ΔT - temperature change from pure solvent to solution.
Kf - the molal freezing point depression constant.
b -  molality (moles of solute per kilogram of solvent).
i - Van’t Hoff Factor.
First measure freezing point of pure solvent (deionized water). Than make solutions of NaNO₃ with different molality and measure separately their freezing points. Use equation to calculate Kf.

6 0
2 years ago
The main purpose of following the course of a reaction by TLC is to: Group of answer choices Determine if all the starting mater
kakasveta [241]

Determine if all the starting material is converted to the product.

<h3>What is TLC?</h3>

Because it can provide immediate and important information about a sample's purity and whether or not a reaction is still ongoing, TLC is a common technique in the organic chemistry lab. A TLC plate can be finished in less than 5 minutes when low polarity solvents are used.

<h3>Uses of TLC:-</h3>

TLC is a chromatographic method used to separate mixtures that are not volatile.

Thin-layer chromatography can be used to:-

  • Assess a substance's purity.
  • Identify the compounds present in a particular combination.
  • Track the development of a reaction.

Learn more about TLC here:-

brainly.com/question/14393140

#SPJ4

7 0
2 years ago
If energy increasing or decreasing as you go from a solid to a liquid
Gelneren [198K]
The energy increases because the molecules in water move faster
8 0
2 years ago
Read 2 more answers
The stronger the intermolecular forces, the _______the energy needed to separate the molecules, the ____________the boiling poin
slamgirl [31]

Answer:

higher, higher

Explanation:

It takes more energy to rip apart stronger bonds (that's mostly just common sense there). The boiling point increases because it would take more energy to get the molecules to go from a stuck together liquid, to separating in a gaseous form.

7 0
3 years ago
Other questions:
  • The chemicals used on farms, golf courses, and domestic gardens are often to blame when groundwater becomes contaminated with A.
    14·2 answers
  • A researcher claims that increasing temperature by 10 degrees will double the rate of an enzyme-catalyzed reaction. To test this
    10·1 answer
  • Land pollution most often occurs when
    13·1 answer
  • What is the oxidation state of each element in the species Mn(ClO4)3
    5·2 answers
  • Carbon, hydrogen, and oxygen are always found in what type of molecule?
    11·1 answer
  • What is the chemical name of the compound Ti2O3? Use the list of polyatomic ions and the periodic table to help you answer.
    6·2 answers
  • The reaction 2NO(g) + O2(g) → 2NO2(g) is a synthesis reaction. True False
    10·2 answers
  • The building blocks of DNA are like alphabet letters,
    12·1 answer
  • 100 POINTS!!!!!!! FAST PLEASE
    9·2 answers
  • SO2+02➡SO3 <br>balance chemical equation​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!