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OlgaM077 [116]
3 years ago
12

Balancing equation C2H6+o2>co2+H2O

Chemistry
1 answer:
Dennis_Churaev [7]3 years ago
5 0
C₂H₆ + O₂ ----> CO₂ + H₂O

In order for an equation to be balanced there must be the same number of each atom on both sides

On the left side currently we have 2 C, 6 H, and 2 O
On the right side currently we have 1 C, 2 H, and 3 O

2C₂H₆ + 7O₂ ----> 4CO₂ + 6H₂O


Start by putting a 2 in front of C₂H₆
2C₂H₆ + O₂ ----> CO₂ + H₂O

we now have 4 Carbons on the left, so we need 4 carbons on the CO₂
2C₂H₆ + O₂ ----> 4CO₂ + H₂O

We also now have 12 H on the Left so we need to add a 6 to H₂O
2C₂H₆ + O₂ ----> 4CO₂ + 6H₂O

Finally with Oxygen we have 14 on the right side so we need to add a 7 to O₂

2C₂H₆ + 7O₂ ----> 4CO₂ + 6H₂O


Hope this helped!
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How many moles are in 3.45g of KCI ?
artcher [175]
<h3>Answer:</h3>

0.0463 mol KCl

<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>Chemistry</u>

<u>Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis
<h3>Explanation:</h3>

<u>Step 1: Define</u>

3.45 g KCl

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

Molar Mass of K - 39.10 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of KCl - 39.10 + 35.45 = 74.55 g/mol

<u>Step 3: Convert</u>

  1. Set up:                              \displaystyle 3.45 \ g \ KCl(\frac{1 \ mol \ KCl}{74.55 \ g \ KCl})
  2. Multiply/Divide:                \displaystyle 0.046278 \ mol \ KCl

<u>Step 4: Check</u>

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

0.046278 mol KCl ≈ 0.0463 mol KCl

8 0
3 years ago
The radioactive isotope 210/84 Po decays by alpha emission.
yan [13]

The half-life of polonium-210, given that it decays from 98.3 micrograms to 12.3 micrograms in 414 days is 138 days

<h3>How to determine the number of half-lives </h3>
  • Original amount (N₀) = 98.3 micrograms
  • Amount remaining (N) = 12.3 micrograms
  • Number of half-lives (n) =?

2ⁿ = N₀ / N

2ⁿ = 98.3 / 12.3

2ⁿ = 8

2ⁿ = 2³

n = 3

<h3>How to determine the half life </h3>
  • Number of half-lives (n) = 3
  • Time (t) = 414 days
  • Half-life (t½) = ?

t½ = t / n

t½ = 414 / 3

t½ = 138 days

Learn more about half life:

brainly.com/question/26374513

#SPJ1

4 0
2 years ago
Read 2 more answers
Okay im clueless and over thinking this question can someone please help me out
Crank

A cookie made from flour, eggs, sugar, butter, and chocolate chips is an example of a heterogeneous mixture.

Also, mixing the sugar flavoring in water, since you're mixing two different states of matter.

6 0
3 years ago
6
sergij07 [2.7K]
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3 years ago
What is the next step if the data from an investigation do not support the original hypothesis? The hypothesis is revised and an
yanalaym [24]

Answer:

  • First choice: <em>The hypothesis is revised and another experiment is conducted. </em>

<em></em>

Explanation:

Citing myself from brainly.com/question/12687503, a hypothesis is a reasonable explanation of a phenomenon, which tries to relate a cause with an effect, and that can be testable.

The outcome of the test can either support the hypothesis or reject it.

Both results, either supporting or rejecting the hypothesis, are good for science and help to the development of the scientific knowledge.

Hence, the fact that the data from an experiment do not support the original hypothesis is not a bad thing. The same scientist or other from the scientific community will be able to revise the hypothesis and conduct another experiment, as the first answer choice proposes.

The data are supposed to be correct, unless the analysys, not the conclusion, suggests some errors in the measures or collection of the data. So, it is not the fact that the data do not support the original hypothesis what conducts to run the experiment again (second choice is wrong, then).

The revision of the data to support the hypothesis (third choice) or adjustment of the data to match the observations (fourth hypothesis) are contrary to good practices, so they are also discarded.

5 0
3 years ago
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