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emmasim [6.3K]
3 years ago
7

Which of the following is the correct model of C3H18? ​

Chemistry
1 answer:
Montano1993 [528]3 years ago
7 0

Answer:

B.

General Formulas and Concepts:

<u>Chemistry - Organic</u>

  • Hydrocarbons
  • Bond-Line Notation: Each "arrow" point represents a carbon and the lines represent a bond between the carbons. Hydrogens are assumed added when drawing the molecular formulas

Explanation:

We are given C₈H₁₈. We need a Bond-Line notation where there are 8 "arrow" points (which represent Carbon). We can disregard the Hydrogens as they are assumed to take the rest of the bonds.

Only option B has a value of 8 carbons, represented by the "arrow" points. Therefore, it is the correct answer.

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How many grams of fluorine are needed to react with 8.5g of phosphorus?
love history [14]

Step 1: write the equation:

                                          P₄(s) + 6F₂(g) → 4PF₃(g) 


Step 2: Molar mass of P₄ = 30.97 g/mol × 4 = 123.88 g/mol


Step 3: Number of moles of phosphorus

                                                    n = m/M 

                                                    n = 8.5 g/123.88g/mol

                                                    n = 0.07 moles


Step 4: 0.07 × 12 = 0.84 moles of fluorine.

Fluorine is diatomic gas so we multiplied the number of moles by 12.


Step 5: To find the mass of fluorine we multiply the number of moles with the molar mass.

                            Mass of fluorine = 0.84 ×  228 

                                                        = 191.52 grams.

4 0
3 years ago
6. For which movement of earth materials is gravity not the main force?
sineoko [7]
B moisture evaporating from an ocean
6 0
2 years ago
Read 2 more answers
How does the amount of carbon dioxide affect the rate of photosynthesis?
julsineya [31]

Answer:

There are several ways of measuring the rate of photosynthesis in the lab. These include:

the rate of oxygen output

the rate of carbon dioxide uptake

the rate of carbohydrate production

These are not perfect methods as the plant will also be respiring, which will use up some oxygen and carbohydrate and increase carbon dioxide output.

Several factors can affect the rate of photosynthesis:

light intensity

carbon dioxide concentration

temperature

The amount of chlorophyll also affects the rate of photosynthesis:

plants in lighting conditions unfavourable for photosynthesis may synthesise more chlorophyll, to absorb the light required

the effects of some plant diseases affect the amount of chlorophyll, and therefore the ability of a plant to photosynthesise

hope it helps you

4 0
3 years ago
Which gas makes your voice deeper or has the opposite effect on you than helium when you inhale it.
slega [8]
The correct answer is Sulfur Hexafluoride
it’s an inert gas that is known to be six times heavier than the air we breathe. While Helium being lighter makes our voice higher, SF6 makes our voice deeper. The sound travels slower in denser gases which is why our voice will come out deeper and rather slow.
3 0
3 years ago
Please some one help me plx
Mashcka [7]
Ok I will and your welcome
8 0
3 years ago
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