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bearhunter [10]
3 years ago
5

An example of a physical change is A) cooking an egg. B) folding paper into a frog. C) rusting iron in an old bicycle. D) reacti

ng baking soda and vinegar to make a volcano.
Chemistry
2 answers:
blondinia [14]3 years ago
8 0
The correct answer is B
Sidana [21]3 years ago
8 0

the answer is b/////

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Charles is given two electrical conductors – aluminium and graphite. Help him to select one for making an electric wire. Justify
Iteru [2.4K]

Answer: aluminum I think

Explanation:

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3 years ago
What is another name for the heat involved in a reaction?
wlad13 [49]

There is your answer

4 0
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If your good at science you could help me out so much!
Andrei [34K]

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Potassium (K) and Lithium (Li) for the fist one i cant see the second

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3 years ago
How many moles of S would I have if I had 11 grams? (Stoichiometry) HELP
zepelin [54]
<h3>Answer:</h3>

0.34 mol S

<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>

  • Reading a Periodic Table

<u>Stoichiometry</u>

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

<u>Step 1: Define</u>

11 g S

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

[PT] Molar Mass of S - 32.07 g/mol

<u>Step 3: Convert</u>

  1. Set up:                                \displaystyle 11 \ g \ S(\frac{1 \ mol \ S}{32.07 \ g \ S})
  2. Multiply/Divide:                  \displaystyle 0.343 \ mol \ S

<u>Step 4: Check</u>

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

0.343 mol S ≈ 0.34 mol S

4 0
3 years ago
In which group of the Periodic Table do most of the elements exhibit both positive and negative oxidation states?
Shtirlitz [24]
C i think but you should pick it anyway
4 0
3 years ago
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