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natali 33 [55]
3 years ago
11

According to the diagram below, In which hemisphere is it NIGHT and SUMMER?

Chemistry
1 answer:
Wewaii [24]3 years ago
5 0
The answer should be A. NW Hemisphere
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This section of the periodic table is called a(n)
Alex_Xolod [135]
I’d say A yeah I’m pretty sure
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3 years ago
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4. Assume that the water stream is replaced by a stream of CCI.. Predict what would happen in each case:
RoseWind [281]

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The answer is c) charged balloon

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3 years ago
Which two geographic features form as a result of continental-continetal convergent<br> plates?
Kaylis [27]

Answer:

Deep ocean trenches, volcanoes, island arcs, submarine mountain ranges, and fault lines are examples of features that can form along plate tectonic boundaries. Volcanoes are one kind of feature that forms along convergent plate boundaries, where two tectonic plates collide and one moves beneath the other.

Explanation:

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5 0
3 years ago
How many moles in 2.21 x10E24 atoms of aluminum
lisov135 [29]
<h3>Answer:</h3>

3.67 mol Al

<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>

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

<u>Stoichiometry</u>

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

<u>Step 1: Define</u>

2.21 × 10²⁴ atoms Al

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

Avogadro's Number

<u>Step 3: Convert</u>

  1. Set up:                              \displaystyle 2.21 \cdot 10^{24} \ atoms \ Al(\frac{1 \ mol \ Al}{6.022 \cdot 10^{23} \ atoms \ Al})
  2. Divide:                              \displaystyle 3.66988 \ mol \ Al

<u>Step 4: Check</u>

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

3.66988 mol Al ≈ 3.67 mol Al

7 0
3 years ago
Changes in appearance...
Serjik [45]
I'm not quite sure but I think if you field the corner or cut it it would physically change it while not creating something new (chemical change).
3 0
4 years ago
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