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
zubka84 [21]
3 years ago
6

What is the total number of electrons shown in this Lewis structure of carbon dioxide? A. 8 B. 12 C. 16 D. 24

Chemistry
1 answer:
krek1111 [17]3 years ago
8 0
Answer is 16
carbon valence = 4
oxygen valence = 6 but carbon dioxide have 2 oxygen so = 12
12 + 4 = 16
so carbon dioxide have 16 electron
You might be interested in
How many kilojoules of energy would be required to heat a 225g block of aluminum from 23.0 C to 73.5 C?
gulaghasi [49]

Answer:

\boxed {\boxed {\sf 10.2 \ kJ}}

Explanation:

We are asked to find how many kilojoules of energy would be required to heat a block of aluminum.

We will use the following formula to calculate heat energy.

q=mc \Delta T

The mass (m) of the aluminum block is 225 grams and the specific heat (c) is 0.897 Joules per gram degree Celsius. The change in temperature (ΔT) is the difference between the final temperature and the initial temperature.

  • ΔT = final temperature - inital temperature

The aluminum block was heated from 23.0 °C to 73.5 °C.

  • ΔT= 73.5 °C - 23.0 °C = 50.5 °C

Now we know all three variables and can substitute them into the formula.

  • m= 225 g
  • c= 0.897 J/g° C
  • ΔT= 50.5 °C

q= (225 \ g )(0.897 \ J/g \textdegree C)(50.5 \textdegree C)

Multiply the first two numbers. The units of grams cancel.

q= (225 \ g  * 0.897 \ J/g \textdegree C)(50.5 \textdegree C)

q= (225   * 0.897 \ J / \textdegree C)(50.5 \textdegree C)

q= (201.825\ J / \textdegree C)(50.5 \textdegree C)

Multiply again. This time, the units of degrees Celsius cancel.

q= 201.825 \ J * 50.5

q= 10192.1625 \ J

The answer asks for the energy in kilojoules, so we must convert our answer. Remember that 1 kilojoule contains 1000 joules.

\frac { 1  \ kJ}{ 1000 \ J}

Multiply by the answer we found in Joules.

10192.1625 \ J * \frac{ 1 \ kJ}{ 1000 \ J}

10192.1625  * \frac{ 1 \ kJ}{ 1000 }

\frac {10192. 1625}{1000} \ kJ

10.1921625 \ kJ

The original values of mass, temperature, and specific heat all have 3 significant figures, so our answer must have the same. For the number we found, that is the tneths place. The 9 in the hundredth place tells us to round the 1 up to a 2.

10.2 \ kJ

Approximately <u>10.2 kilojoules</u> of energy would be required.

3 0
2 years ago
Which subatomic particles are located in MOST of the space within an atom?
mote1985 [20]
The answer is particels of nuclis
5 0
3 years ago
A scientist adds a liquid to a base. As it is added the substance turns reddish pink the liquid is most likely?
Natalka [10]

Answer:

what we need to answer here?

6 0
3 years ago
A drink is made up mostly of water. A small amount of sweet powder is stirred in using a spoon. The power in this solution is th
Helen [10]
Well the solvent is the liquid in a solution so your answer would be Solute, D. That is the one that would represent the sugar crystals being evenly mixed into a solution.
6 0
2 years ago
Read 2 more answers
***Question in photo***<br><br> Is the entropy positive or negative in this question?
Kamila [148]

Answer:

Enthalpy change is negative

Entropy change is Positive

Explanation:

4 0
3 years ago
Other questions:
  • Suppose a current of 0.880 A flows through a copper wire for 132. seconds. Calculate how many moles of electrons travel through
    9·1 answer
  • What is the atomic mass of an element if 4.00 grams of it contains 2.98x1022 atoms ?
    15·2 answers
  • using the equation 2H2+O2--&gt;2H2O,if 192g of water are produced ,how many grams of hydrogen must react with it
    12·1 answer
  • When scientists say that a theory can never be proven, what are they actually saying?
    9·1 answer
  • When the equation H202 + H2O + O2 is completely balanced, the SUM of all the coefficients will be
    8·1 answer
  • Please answer the question
    13·2 answers
  • What are properties ?
    11·1 answer
  • sedimentary rocks that are formed from physical/chemical process within the earth are given the general name of
    9·2 answers
  • Which two kingdoms are the only prokaryotes
    6·1 answer
  • The conversion of glucose to lactic acid is called:
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!