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tiny-mole [99]
3 years ago
8

PLEASE HELP IMMEDIATELY WILL GIVE BRAINLIEST ​

Chemistry
1 answer:
leonid [27]3 years ago
5 0
To be honest all of them function well with each other
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Eddie experimented to find out which freezes at a lower temperature, distilled water or salt water. The steps he used in his exp
olga2289 [7]

Answer:

the answer is C. 3. measure the mass of the liquid in both beakers

3 0
4 years ago
Please help!!<br> I don’t understand
laiz [17]
<h3>Answer:</h3>

150 g Si

<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
  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

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

<u>Step 1: Define</u>

[Given] 3.2 × 10²⁴ atoms Si

[Solve] grams Si

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

Avogadro's Number

[PT] Molar Mass of Si - 28.09 g/mol

<u>Step 3: Convert</u>

  1. [DA] Set up:                                                                                                       \displaystyle 3.2 \cdot 10^{24} \ atoms \ Si(\frac{1 \ mol \ Si}{6.022 \cdot 10^{23} \ atoms \ Si})(\frac{28.09 \ g \ Si}{1 \ mol \ Si})
  2. [DA] Multiply/Divide [Cancel out units]:                                                            \displaystyle 149.266 \ g \ Si

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. Instructed to round to 2 sig figs.</em>

149.266 g Si ≈ 150 g Si

4 0
3 years ago
What causes the reaction between baking soda and vinegar?
Wewaii [24]
Baking soda is a bicarbonate, which means that each molecule of baking soda
contains a sodium atom, a H atom, an O2 atom, and a CO2 molecule.

Vinegar contains acetic acid, and each molecule contains a H atom, and an acetate ion.

When they're combined, the hydrogen atom in the acetic acid meets up with the H and O2 atoms in the baking soda to form a molecule of water, while the acetate ion grabs onto the sodium atom and forms a salt, sodium, acetate. The CO2 molecule, free of its other chemical bonds, can now escape, and bubbles form as a gas.
6 0
3 years ago
PLZ HELP!!!!!!!!!!!!!!!
natima [27]

Answer:

How cryolite is added to the electrolytic cell which is used to extract aluminium is that molten cyrolite dissolves the aluminium oxide, which is used for a lower temperature point than aluminium to extract it :3

Explanation:

:3

8 0
3 years ago
What are the factors that affect the rate of dissolution?
Liula [17]

Option (C) is the correct answer.

When solute is added to the solvent, results in the formation of solution and the process is said to be dissolution.

Dissolution process depends upon the three factors: temperature, stirring and surface area.

Stirring increases the rate of dissolving as when stirring a solute in the solvent, stirring helps in the distribution of solute throughout the solvent which results in speed up the dissolving rate.

Dissolution also depends upon the temperature, in warm solvent, solute dissolves readily whereas in cool solvent, solute dissolves slowly as particles have more movement energy.

Greater the surface area, there will be more contact between the solute particles and solvent particles which increases the rate of dissolving. Smaller the surface are, there will be less contact between the particles which decreases the rate of dissolving. For example: granulated sugar dissolves more readily due to larger surface area and one ice cube dissolves slowly due to smaller surface area.

Hence, rate of dissolution depends upon temperature, stirring, surface area.

4 0
3 years ago
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