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Nostrana [21]
3 years ago
12

Which statements best describe displacement? Check all that apply. Displacement is measured along the path an object travels. Di

splacement is a measurement that includes direction. Displacement is the difference between a starting point and an ending point. Displacement is how far an object travels from starting point to ending point. Displacement is measured as a straight line between a starting point and an ending point.
Chemistry
2 answers:
arlik [135]3 years ago
4 0

Answer:

Displacement is a measurement that includes direction.

Displacement is the difference between a starting point and an ending point.

Displacement is measured as a straight line between a starting point and an ending point.

Explanation

took the test

qaws [65]3 years ago
3 0

Answer:

It's 2,3 and 5

Explanation:

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How many moles of sand (SiO2) are in 30 g of sand?
anastassius [24]
<h3>Answer:</h3>

0.50 mol SiO₂

<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>Chemistry</u>

<u>Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis
<h3>Explanation:</h3>

<u>Step 1: Define</u>

30 g SiO₂ (sand)

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

Molar Mass of Si - 28.09 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of SiO₂ - 28.09 + 2(16.00) = 60.09 g/mol

<u>Step 3: Convert</u>

  1. Set up:                                \displaystyle 30 \ g \ SiO_2(\frac{1 \ mol \ SiO_2}{60.09 \ g \ SiO_2})
  2. Multiply/Divide:                  \displaystyle 0.499251 \ mol \ SiO_2

<u>Step 4: Check</u>

<em>Follow sig figs and round. We are given 2 sig figs.</em>

0.499251 mol SiO₂ ≈ 0.50 mol SiO₂

5 0
3 years ago
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Methane >>>>>>>> CH₄

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From the above table, we can see that ethanol (C₂H₅OH) contains carbon (C), hydrogen (H) and oxygen

Therefore, the total number of elements present in ethanol, C₂H₅OH is 3.

8 0
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Make sure have same amounts of species on both sides
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