1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ololo11 [35]
3 years ago
5

3. What property from the periodic table does the number of fingers on each hand indicate?

Chemistry
1 answer:
pantera1 [17]3 years ago
6 0

Answer:

The fingers refer to Atomic number of each element.

Explanation:

You might be interested in
Which statements accurately describe elements? Check all that apply.
svet-max [94.6K]

Answer:

  • Elements are made up of only one type of atom.
  • Each element has a unique chemical symbol.
  • Elements can be identified by their atomic number.

Explanation:

7 0
3 years ago
Read 2 more answers
PLEASE HURRY!!! I WILL GIVE BRAINLEIST!!!!
saul85 [17]

Answer:

A I did the exam and I saw A sorry if it is wrong dont have the best of memory

8 0
3 years ago
What is the theoretical yield of fluorenone if you oxidize 175 mg of fluorene?
My name is Ann [436]

Answer:

  • 602 mg of CO₂ and 94.8 mg of H₂O

Explanation:

The<em> yield</em> is measured by the amount of each product produced by the reaction.

The chemical formula of <em>fluorene</em> is C₁₃H₁₀, and its molar mass is 166.223 g/mol.

The <em>oxidation</em>, also know as combustion, of this hydrocarbon is represented by the following balanced chemical equation:

        2C_{13}H_{10}+31O_2\rightarrow 26CO_2+10H_2O

To calculate the yield follow these steps:

<u>1. Mole ratio</u>

          2molC_{13}H_{10}:31molO_2:26molCO_2:10molH_2O

<u />

<u>2. Convert 175mg of fluorene to number of moles</u>

  • 175mg/times 1g/1,000mg=0.175g

  • Number of moles = mass in grams / molar mass

  • \text{number of moles}=0.175g/166.223g/mol=0.0010528mol

<u>3. Set a proportion for each product of the reaction</u>

a) <u>For CO₂</u>

i) number of moles

         2molC_{10}H_{13}/26molCO_2=0.0010528molC_{10}H{13}/x

x=0.0010528molC_{10}H_{13}\times 26molCO_2/2molC_{10}H_{13}=0.013686molCO_2

ii) mass in grams

The molar mass of CO₂ is 44.01g/mol

  • mass = number of moles × molar mass
  • mass = 0.013686 moles × 44.01 g/mol = 0.602 g = 602mg

b) <u>For H₂O</u>

i) number of moles

0.0010528molC_{10}H_{13}\times10molH_2O/2molC_{10}H_{13}=0.00526molH_2O

ii) mass in grams

The molar mass of H₂O is 18.015g/mol

  • mass = number of moles × molar mass
  • mass = 0.00526 moles × 18.015 g/mol = 0.0948mg = 94.8 mg
4 0
3 years ago
How did the construction of a parking lot, hiking trail, and playground affect the fish populations in the pond? PLEASE HELP.
Tpy6a [65]
A),b),c),d) answers?
4 0
3 years ago
Read 2 more answers
(GIVING BRAINLYIST) Which environment has low temperatures and low humidity?
Greeley [361]

Answer:

The answer would be tundra.

A rain forest has a lot of humidity because it rains a lot otherwise it wouldn't be called a rain forest.

Grassland has a somewhat high temperature and average humidity enough to keep it green and grassy hence grasslands.

A wetland has a lot of water but low temperatures. Still, humidity is water so wetlands aren't it.

Explanation:

Hope this helped.

A brainliest is always appreciated.

7 0
2 years ago
Read 2 more answers
Other questions:
  • What equation tells you how to calculate the number of neutrons in an atom??
    5·1 answer
  • A tiny pencil mark just visible to the naked eye contains about 3 × 1017 atoms of carbon. what is the mass of this pencil mark i
    7·1 answer
  • In the following diagram the counter clockwise torque is?
    6·1 answer
  • Name three differences between a rock and a mineral
    13·2 answers
  • After water What is the most important materials in cells
    6·2 answers
  • Need help asap!
    9·1 answer
  • What are the three ways there can be a base change in a sequence?
    10·1 answer
  • Describe how Carbon fulfills the Octet Rule in this molecule.
    5·2 answers
  • How many formula units are in 0.0022 mol of NaCl (it’s urgent plz)
    11·1 answer
  • Plz download the doc and answer its due in 20 mins like bro wth
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!