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
Naddika [18.5K]
3 years ago
9

Which of the following elements is rarely found in organic molecules?

Chemistry
1 answer:
fgiga [73]3 years ago
8 0

Answer:

C: Carbon

Explanation:

Hydrogen, oxygen, and carbon are the most important elements in organic compounds.

You might be interested in
In the laboratory you are asked to make a 0.175 m barium iodide solution using 13.9 grams of barium iodide. How much water shoul
BARSIC [14]

<u>Answer:</u> The mass of water that should be added in 203.07 grams

<u>Explanation:</u>

To calculate the molality of solution, we use the equation:

\text{Molality}=\frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ (in grams)}}

Where,

m = molality of barium iodide solution = 0.175 m

m_{solute} = Given mass of solute (barium iodide) = 13.9 g

M_{solute} = Molar mass of solute (barium iodide) = 391.14 g/mol

W_{solvent} = Mass of solvent (water) = ? g

Putting values in above equation, we get:

0.175=\frac{13.9\times 1000}{391.14\times W_{solvent}}\\\\W_{solvent}=\frac{13.9\times 1000}{391.14\times 0.175}=203.07g

Hence, the mass of water that should be added in 203.07 grams

4 0
3 years ago
How many molecules of ammonia are produced from the reaction of
vivado [14]

Answer:

9.5X10^23 molecules N2 X (2 molecules NH3 / 1 molecule N2) = 1.9X10^24 molecules NH3

Explanation:

.

8 0
3 years ago
How much energy is required to melt a 500. gram block of iron? The heat of vaporization is 6090 J/g and the heat of fusion is 24
galben [10]

The mass of iron block is 500 g. The amount of energy required to melt the iron block needs to be calculated. Melting means conversion of solid to liquid thus, heat of fusion is used which is 247 J/g.

From heat of fusion, 247 J of energy is released by melting 1 g of iron block. Thus, the amount of heat released by melting 500 g of iron rod will be:

H= 247 J/g× 500 g=1.23×10^{5}

Hence, option B is correct.

3 0
3 years ago
Read 2 more answers
N2(g) +O2(g) —&gt; N2O5(g)
Alex Ar [27]

Answer:

2N₂(g) +   5O₂(g) ----------> 2N₂O₅(g)

Nitrogen N2(g) get an coefficient of  2.

Explanation:

Reaction Given

                 N₂(g) +O₂(g) —> N₂O₅(g)

Balanced Equation =?

Balance Chemical Equation:

A balanced chemical equation is that in which the number of the reactant atoms equal to the number of the product atom.

For example if the Nitrogen at the reactant side is 3, the number of Nitrogen must be 3 on the product side.

Check the chemical equation and count the number of atoms at the reactant side and product side.

if the number of atoms of the reactants equal to the number of atoms of  products then the reaction is balanced but if not equal then reaction is not balanced

Balancing is an trial and error process to get a balance reaction.

First we count the number of atoms of reactant and product

Number of atoms of Reactant:

N = 2

O = 2

Number of atoms of Product:

N = 2

O = 5

So this is not a balance equation as the atoms of the reactant atom not equal to the product atoms.

Nitrogen atoms are 2 on both reactant and product side

But

Oxygen atoms are 2 on reactant and 5 on product side that is not equal.

Now balance the equation:

                         2N₂(g) +   5O₂(g) ----------> 2N₂O₅(g)

Now again count the number of atoms of reactant and product

Number of atoms of Reactant:

N = 4

O = 10

Number of atoms of Product:

N = 4

O = 10

So now the atoms are equal on both reactant and product side.

By balancing the reaction nitrogen N2(g) get an coefficient of  2.

5 0
3 years ago
At STP, when 3.75 liters of oxygen reacts with excess glucose, what volume of carbon dioxide does it produce?
yKpoI14uk [10]
Well,  STP means standard temperature and pressure

In this condition, it is safe to assume that the moles of specie given will be equal to the moles of specie sought

I think the volume of the Carbon dioxide that it produced will also be 3.75 liters

Hope this helps
6 0
3 years ago
Read 2 more answers
Other questions:
  • Trans fats: Think about how the prefix trans- is used in naming alkenes.
    15·2 answers
  • What is the total number of valence electrons in the lewis structure of xeo4?
    13·1 answer
  • A flask contains oxygen, carbon dioxide,
    12·1 answer
  • What kind of bonding is found in Fe2O3?​
    9·1 answer
  • Identify which of the bonds in calcium hydroxide, Ca(OH)2, are ionic and which are covalent.
    8·2 answers
  • A rectangular corral of widths Lx = L and Ly = 2L contains seven electrons. What is the energy of (a) the first excited state, (
    5·1 answer
  • The chemical symbol for sulfuric acid is H2SO4. How many atoms are contained in each molecule of sulfuric acid?
    12·2 answers
  • A bond formed when atoms transfer elentron is a bond
    8·1 answer
  • Fusion is a type of _____.<br><br> chemical reaction<br> nuclear reaction<br> physical reaction
    7·2 answers
  • If a fish tank holds 6912 cubic inches of water, how many cubic feet of water are there in a fish tank.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!