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tensa zangetsu [6.8K]
3 years ago
11

when applied to a dish, soap makes grease soluble in water. which explanation correctly supports the role of intermolecular forc

es in this common observation?
Chemistry
1 answer:
ankoles [38]3 years ago
7 0
This is possible because of the emulsifying properties present in soap. This property is caused by the hydrophilic end and hydrophobic end of a soap molecule. Grease is able to be dissolved in the water because it is attracted to the hydrophobic end of the soap molecule.
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Why Is it important to have exact standards of measurement ?
notsponge [240]
A standard of measurement system is important because it allows scientists to compare data and communicate with each other about their results.
3 0
3 years ago
Tai ran from his home to a position 300 m south of his home in 100 seconds. What was his velocity?
77julia77 [94]
Well, if you are moving forward in a direction, then your velocity is your speed with the direction you are moving in. To calculate velocity, you divide your distance traveled by the time it took to travel that distance and you add your direction to it.
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5 0
4 years ago
What is the amount in moles 3.40 g Zn
Sidana [21]
<h3>Answer:</h3>

0.0520 mol Zn

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Reading a Periodic Table

<u>Stoichiometry</u>

  • Using Dimensional Analysis
<h3>Explanation:</h3>

<u>Step 1: Define</u>

3.40 g Zn

<u>Step 2: Identify Conversions</u>

Molar Mass of Zn - 65.39 g/mol

<u>Step 3: Convert</u>

  1. Set up:                    \displaystyle 3.40 \ g \ Zn(\frac{1 \ mol \ Zn}{65.39 \ g \ Zn})
  2. Divide:                    \displaystyle 0.051996 \ mol \ Zn

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

0.051996 mol Zn ≈ 0.0520 mol Zn

3 0
3 years ago
Which electron in sulfur is most shielded from nuclear charge?
natima [27]

Answer: 3p Orbitals

Explanation:

Electrons present in the 3p orbitals are farthest from the nucleus. Therefore, the electrons present in the 3p orbital will be shielded by the electrons present in the inner orbitals. Hence, 3p orbital in sulfur is most shielded from the nuclear charge".

5 0
3 years ago
Are electrons exchanged between ionic or covalent bonds
Rudik [331]

Answer:

Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals.

3 0
4 years ago
Read 2 more answers
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