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nasty-shy [4]
3 years ago
15

Mechanical digestion tears, grinds, and mashes large food particles into smaller particles. true or false?

Chemistry
1 answer:
Alenkasestr [34]3 years ago
8 0

Answer:true

Explanation:

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The volume of the balloon would decrease
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What happens when an atom of sulfur combines with two atoms of chlorine to produce SCI2?
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Answer:..A.) Each chlorine atom shares a pair of electrons with the sulfur atom

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Convert 6.7 x 1024 molecules of nitrogen dioxide into grams.
BlackZzzverrR [31]

Answer:

510 g NO₂

General Formulas and Concepts:

  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
  • Reading the Periodic Table
  • Writing Compounds
  • Using Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

6.7 × 10²⁴ molecules NO₂ (Nitrogen dioxide)

<u>Step 2: Define conversions</u>

Avogadro's Number

Molar Mass of N - 14.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of NO₂ - 14.01 + 2(16.00) = 46.01 g/mol

<u>Step 3: Use Dimensional Analysis</u>

<u />6.7 \cdot 10^{24} \ molecules \ NO_2(\frac{1 \ mol \ NO_2}{6.022 \cdot 10^{23} \ molecules \ NO_2} )(\frac{46.01 \ g \ NO_2}{1 \ mol \ NO_2} ) = 511.901 g NO₂

<u>Step 4: Check</u>

<em>We are given 2 sig figs. Follow sig fig rules.</em>

511.901 g NO₂ ≈ 510 g NO₂

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Which of the following statements describes sound energy?
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Answer:

C.

Explanation:

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What is the mass in grams of 4.91 moles of ammonium sulfate?
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1 mole is equal to 1 moles Ammonium Sulfate, or 132.13952 grams
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