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Alenkasestr [34]
2 years ago
14

How does physical properties differ from chemical properties? 1.Chemical properties are observed using your senses. 2.Chemical p

roperties can only be observed using your taste sense. 3.Physical properties can be observed and chemical properties cannot. 4.Physical properties cannot be observed and chemical properties can.
Chemistry
1 answer:
mel-nik [20]2 years ago
7 0

Answer:

3. Physical properties can be observed and chemical properties can't

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If the pressure on a gas sample is tripled and the absolute temperature is quadrupled, by what factor will the volume of the sam
antoniya [11.8K]

Answer:

b. 4/3

Explanation:

Given data

  • Initial pressure: P₁
  • Initial volume: V₁
  • Initial temperature: T₁
  • Final pressure: P₂ = 3 P₁
  • Final volume: V₂
  • Final temperature: T₂ = 4 T₁

We can find by what factor will the volume of the sample change using the combined gas law.

\frac{P_{1}.V_{1}}{T_{1}} =\frac{P_{2}.V_{2}}{T_{2}}\\\frac{P_{1}.V_{1}}{T_{1}} =\frac{3P_{1}.V_{2}}{4T_{1}}\\V_{1} =\frac{3V_{2}}{4}\\V_{2}=4/3 V_{1}

7 0
2 years ago
Which molecule is nonpolar and has a symmetrical shape hcl?
Alchen [17]
HCl is considered as polar molecule and that is incorrect answer, The choices provided are A) HCl , B) CH₄ , C) H₂O, D) NH₃

And the correct answer is : B) CH₄

In case of H₂O and NH₃ the high difference in electronegativity between nitrogen or oxygen and hydrogen make the bonds acquire partial charges and become polar while in case of CH₄ the difference in electronegativity between carbon and hydrogen is only 0.4 so it considered as non-polar bond
also carbon connected from all directions with Hydrogens

4 0
2 years ago
Read 2 more answers
Example of a homoatomic and heteroatomic molecule
il63 [147K]

Answer:

Some examples of homoatomic molecules are hydrogen gas, and oxygen gas and some examples of heteroatomic molecules are water, methane

Explanation:

3 0
3 years ago
If you are given 243.52 grams of Sb how many miles will you have
kaheart [24]

2 moles

Explanation:

Given parameters:

Mass of Sb = 243.52g

Unknown:

Number of moles = ?

Solution:

The number of moles of any substance can be calculated using the expression below:

 Number of moles = \frac{mass }{molar mass}

  Molar mass of Sb = 121.76g/mol

Now input the parameters:

   Number of moles = \frac{243.52}{121.76 } =  2 moles

learn more:

Number of moles brainly.com/question/1841136

#learnwithBrainly

4 0
3 years ago
What is the number of moles of solute in 250mL of a 0.4M solution?
lana66690 [7]

There are 0.1 moles of solute in 250 mL of 0.4 M solution.

Explanation:

First, recognize that the molar concentration tells you how many moles of the solute are present in one liter of solution. In a 0.4 M solution, there are 0.4 moles of solute in every liter of solution. You can determine the number of moles of solute in 250 mL of the solution using dimensional analysis.

250mL⋅

1L/1000mL⋅

0.4mol1L

Units of liters and milliliters cancel, leaving you with a final answer in units of moles, at 0.1 mol.

7 0
2 years ago
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