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Mademuasel [1]
3 years ago
12

Solve: 9^2x + 1 = 9^3x - 2 x=

Mathematics
1 answer:
lana66690 [7]3 years ago
3 0

Answer:

x=3

Step-by-step explanation:

Because the base is the same for both sides the exponents have to equal each other. That means that we can make the exponents equal to each other and solve. This only works when the bases are the same, like how the bases here are both 9

2x+1=3x-2 --> 1=3x-2x-2 --> 1=x-2 --> 1+2=x --> x=3

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How many atoms sodium would a 4 mole sample of Na3P have?
ioda
<h3>Answer:</h3>

2 × 10²⁴ atoms Na₃P

<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
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<h3>Step-by-step explanation:</h3>

<u>Step 1: Define</u>

4 mol Na₃P

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

Avogadro's Number

<u>Step 3: Convert</u>

<u />\displaystyle 4 \ mol \ Na_3P(\frac{6.022 \cdot 10^{23} \ atoms \ Na_3P}{1 \ mol \ Na_3P} ) = 2.4088 × 10²⁴ atoms Na₃P

<u>Step 4: Check</u>

<em>We are given 1 sig fig. Follow sig fig rules and round.</em>

2.4088 × 10²⁴ atoms Na₃P ≈ 2 × 10²⁴ atoms Na₃P

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