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Arte-miy333 [17]
3 years ago
5

Data abd observation on the propeties of the given sample​

Chemistry
1 answer:
mr Goodwill [35]3 years ago
4 0
Observation, in which the scientist observes what is happening, collects information, and studies facts relevant to the problem. In this stage, statistics suggests what can most advantageously be observed and how data might be collected.
Hypothesis, in which the scientist puts forth educated hunches or explanations for observed findings and facts. In this stage, the statistician helps format observations in a form that is comprehensible and understandable.
Prediction, in which the anticipatory deductions based on hypotheses are put forward in testable ways. Statistics can help only a little at this stage of analysis, for predictive insights are often intuitive and creative rather than numerical.
Verification, in which data are collected to test predictions. In judging the extent to which predictions are borne out by observation, we recognize that data and predictions almost never agree exactly, even when theories are correct.
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Which temperature in Celsius (°C) does this thermometer show? –8° 0° 25° 32°
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Answer:

0° Celsius

Explanation:

The thermometer shows 0° Celsius which corresponds to 32° F.

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Which of the following is not true of "concentration"?
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The correct answer is B. The concentration of a solution does not decreases when you add more solute to the solvent. Instead, the concentration increases. Concentration is expressed as the amount of solute per unit of solvent. Therefore, increasing the solute, increases this value and increasing the solvent, decreases this value.
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What is the maximum volume of 0.25 M sodium hypochlorite solution (NaOCl, laundry bleach) that can be prepared by dilution of 1.
ehidna [41]

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0.313L

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Erica is working in the lab. She wants to remove the fine dust particles suspended in a sample of oli. What method is she most l
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An empty Erlenmeyer flask weighs 241.3 g. When filled with water (d = 1.00 g/cm³), the flask and its contents weigh 489.1 g. (a)
miskamm [114]

The answer is- Volume of flask = 247.8 cm^3 or 247.8 mL.

Density (d) is defined as mass of substance divided by its volume. Thus, if mass and density are known, then Volume can be determined.

What is the formula of volume in terms of density?

  • Let mass of substance be 'm' and volume be 'V'. Thus, as per the definition of density, it is expressed as-

d = \frac{m}{V}

Thus, volume can be expressed as-

V =\frac{m}{d}

  • Now, mass of empty flask = 241.3 g and the mass of  (flask + Water) = 489.1 g.

Thus, mass of water = 489.1\ g- 241.3\ g = 247.8\ g.

  • Thus, mass of water = 247.8 g and density of water =1.00\ g/cm^3. Its volume is calculated as-

V = \frac{247.8\ g}{1.00\ g/cm^3}=247.8\ cm^3

  • Hence, volume of flask = 247.8 cm^3 or 247.8 mL.

To learn more about Density and Volume, visit:

brainly.com/question/952755

#SPJ4

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2 years ago
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