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
Nat2105 [25]
3 years ago
11

Why is it important to use significant figures in chemistry?

Chemistry
1 answer:
TEA [102]3 years ago
3 0
It is important because it helps with accuracy and precision of numbers. Also say you have an equation, you want to have an equal amount of significant figures to be accurate.
You might be interested in
Which is a property of covalent compounds?
ira [324]

Answer:

Explanation:

The properties of covalent bonds are:

1. Low boiling points and melting points.

2. Various colors.

3. Poor conductors of heat and electricity.

4. Brittle solids.

6 0
3 years ago
consider a 1000-ml graduated cylinder with marks every 100 ml. a student records the volume of liquid in the cylinder as 750 ml.
kap26 [50]

Answer:

Yes, given statement is true.

Explanation:

Given that a cylinder of 1000 ml is marked at every 100 ml.

During the test, the student can easily check the volume of liquid so the student's guess is 750 ml true.  

With this measurement, we can estimate that 1/10th of 100 ml can be measured.  

So, given statement is correct.

6 0
3 years ago
which of the following methods is most appropriate to use to determine the number of different-colored components in a sample of
Andru [333]

The answer is paper chromatography using different solvents with a range of polarities as the mobile phase.

Paper chromatography- Low-molecular-mass molecules can be separated using paper chromatography based on how evenly they are distributed in the stationary and mobile phases. Paper chromatography is regarded as a potent analytical technique because of its low cost and the availability of numerous procedures for the separation of chemicals.

A small amount of a sample solution is poured onto a strip of chromatography paper in a paper chromatography experiment. After that, a solvent is used to suspend the chromatography paper. The sample solution's constituent components split out into bands of distinct hue as the solvent goes up the paper.

The speed of the chromatography process is influenced by the solvent's polarity. Therefore, we may conclude that all of the other components in the mixture move more quickly during the chromatography experiment if the solvent's polarity is increased.

Thus, answer is paper chromatography using different solvents with a range of polarities as the mobile phase.

To learn more about paper chromatography refer- brainly.com/question/1394204

#SPJ4

3 0
1 year ago
In a room full of air, the air is mainly composed of Nitrogen and Oxygen molecules (both at room temperature). Find (to two sign
zloy xaker [14]

Explanation:

Expression for the v_{rms} speed is as follows.

            v_{rms} = \sqrt{\frac{3kT}{M}}

where,   v_{rms} = root mean square speed

                     k = Boltzmann constant

                    T = temperature

                    M = molecular mass

As the molecular weight of oxygen is 0.031 kg/mol and R = 8.314 J/mol K. Hence, we will calculate the value of v_{rms} as follows.

               v_{rms} = \sqrt{\frac{3kT}{M}}

                            = \sqrt{\frac{3 \times 8.314 J/mol K \times 309.02 K}{0.031 kg/mol}}

                            = 498.5 m/s

Hence, v_{rms} for oxygen atom is 498.5 m/s.

For nitrogen atom, the molecular weight is 0.028 kg/mol. Hence, we will calculate its v_{rms} speed as follows.

                v_{rms} = \sqrt{\frac{3kT}{M}}

                              = \sqrt{\frac{3 \times 8.314 J/mol K \times 309.92 K}{0.028 kg/mol}}

                              = 524.5 m/s

Therefore, v_{rms} speed for nitrogen is 524.5 m/s.

3 0
3 years ago
During which season is the sun highest in the sky?
Softa [21]

Answer:

sunmmerrrr

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • If the van urk reagent is used to test a sample and it turns bluish-purple, what drug does this indicate the presence of?
    9·1 answer
  • You adjust the temperature so that a sound wave travels more quickly through the air. You increase the temperature from 30°C to
    11·1 answer
  • ______________________ produce evidence that helps to answer important questions or could also lead to new questions. A.investig
    9·2 answers
  • A 200.9-mL intravenous (IV) solution contains 5.10 g of glucose (C6H12O6). What is the molarity of this solution?
    6·1 answer
  • Please answer , please
    9·1 answer
  • 3.1
    7·1 answer
  • What is the method for oxygen for rusting
    11·2 answers
  • Calculate the Ka of your acetic acid solution. Discuss this calculation. Based on the value of Ka, is acetic acid a strong acid
    9·1 answer
  • What volume of .15M NaOH could be produced with only 5 grams of NaOH and water?
    14·1 answer
  • Explain why sodium chloride solution cannot be used as the electrolyte to produce
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!