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trapecia [35]
2 years ago
12

Balance the following equation and

Chemistry
1 answer:
notsponge [240]2 years ago
7 0

Answer:

jbisibjas bhijjoijnc

Explanation:

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4. How many moles of gold (Au) are in a pure gold nugget having a mass of 25.0 grams.
ikadub [295]
<h3>Answer:</h3>

0.127 mol Au

<h3>General Formulas and Concepts:</h3>

<u>Math</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
  • Moles

<u>Stoichiometry</u>

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

<u>Step 1: Define</u>

[Given] 25.0 g Au

[Solve] moles Au

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

[PT] Molar Mass of Au - 196.97 g/mol

<u>Step 3: Convert</u>

  1. [DA] Set up:                                                                                                     \displaystyle 25.0 \ g \ Au(\frac{1 \ mol \ Au}{196.97 \ g \ Au})
  2. [DA] Multiply/Divide [Cancel out units:                                                          \displaystyle 0.126923 \ mol \ Au

<u>Step 4: Check</u>

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

0.126923 mol Au ≈ 0.127 mol Au

3 0
2 years ago
Read 2 more answers
What is produced when 50mLs of carbon and 30mLs of oxygen react
dsp73

50ml of carbon dioxide.

hope this helps

3 0
3 years ago
Which of the following is true regarding the law of conservation of mass?
nexus9112 [7]
A is correct................
8 0
3 years ago
PLEASE HELP!!!!! (SCIENCE!!!)
vladimir1956 [14]

large iguanas are affected by el nino temperatures

because algae do not grow as rapidly with el nino temperatures

survival rates for the larger iguanas drop

if they are bigger than 36 centimeters

the drop happens beginning with sizes around 40 centimeters

4 0
2 years ago
Potassium has three naturally occurring isotopes. According to one source of data, Potassium-39 (mass 38.9637 amu) makes up 93.2
Nonamiya [84]

Answer:

Average atomic mass of potassium based on these relative abundances

= 39.0944

Explanation:

The atomic mass of this element will be equal to the sum of product of its three isotopic masses and its fractional abundance

For isotope I -

Mass of Potassium-39 =  38.9637 amu

Fractional abundance of Potassium-39 = 93.26 %

Mass of Potassium-40 = 39.9640 amu

Fractional abundance of Potassium-40 = 0.01 %

Mass of Potassium-41 = 40.9618 amu

Fractional abundance of Potassium-41 =  6.73%

Average atomic mass of potassium based on these relative abundances

= (38.9636 * 0.9326)+ (39.9640*0.0001) + (40.9618 * 0.0673)\\= 36.3374 + 0.0003 + 2.7567\\= 39.0944

5 0
3 years ago
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