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ipn [44]
3 years ago
6

Which of these observations is not an example of a physical property of matter? A. The density of sea water is measured to be 1.

027 g/cm3.
B. Gold melts at 1064 ºC.
C. There are usually at least three different minerals in a piece of granite.
D. Your mother's best silver tarnishes.
Chemistry
2 answers:
Black_prince [1.1K]3 years ago
7 0

Answer:

D. Your mother's best silver tarnishes.

Explanation:

Hello,

In this case, the answer is: D. Your mother's best silver tarnishes, since tarnishing is a process carried out due to the effect of an external condition (aging, wearing out and others), not a property. Properties are actually descripted on options A, B and C as they describe the material in terms of its nature.

Best regards.

MAVERICK [17]3 years ago
4 0
D... i feel bad that you didnt understand this...
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Groups or families in the periodic table have what in common
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How many moles are in 30g of C12H22O11?
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Answer:

342.29648 grams

Explanation:

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If sodium arsenite is Na3AsO3, the formula for calcium arsenite would be
lara31 [8.8K]

Answer:

Ca₃(AsO₃)₂

Explanation:

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3 years ago
How many moles are in 3.113 g of Au?Molar mass of Au=197 g/mol
SVEN [57.7K]
<h3>Answer:</h3>

0.0157 g Au

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

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis

<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
<h3>Explanation:</h3>

<u>Step 1: Define</u>

3.113 g Au

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

Molar Mass of Au - 197.87 g/mol

<u>Step 3: Convert</u>

<u />3.113 \ g \ Au(\frac{1 \ mol \ Au}{197.87 \ g \ Au} ) = 0.015733 g Au

<u>Step 4: Check</u>

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

0.015733 g Au ≈ 0.0157 g Au

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The answer would actually be false. I just took the test.

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