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
bekas [8.4K]
3 years ago
11

Bay 101: Wetlands POST Lesson Review

Chemistry
1 answer:
S_A_V [24]3 years ago
3 0
This statement is true
You might be interested in
How are atoms related to balancing a chemical equation?
dmitriy555 [2]

Atoms are related to balancing equations because the amount of atoms on the left of the equation (reactants) needs to be the same amount on the right (products).

For example, 2H₂ + O₂ → 2H₂O

If you count the amount of hydrogen atoms on both sides each, there would be 4 (make sure to multiply the coefficient by the subscripts).

If you count the amount of oxygen atoms on both sides each, there will be 2 of them (2 in a molecule of oxygen)

I hope this helps and please mark me as brainliest!

3 0
2 years ago
Pb(NO3)2<br> how do i solve this
Sindrei [870]

You can see the periodic table one by one.

Pb(NO3)2 = PbN2O6

So there are

1Pb

2N

6O

and so you find the molecular mass from the periodic table and add all the numbers

Molacular mass of

Pb = 207

N = 14

O = 16

multiply it with the number of atoms

1Pb = 207 × 1 = 207

2N = 14 × 2 = 28

6O = 16 × 6 = 96

Molecular mass total = 207 + 28 + 96 = <u>3</u><u>3</u><u>1</u>

So the molecular mass is 331.

4 0
3 years ago
What volume (in L) of oxygen will be required to produce 77.4 L of water vapor in the reaction below?
Nostrana [21]

Answer:

For the production of 77.4 L water 90.3 L oxygen is required.

Explanation:

Given data:

Volume of oxygen required = ?

Volume of water produced = 77.4 L

Solution:

Chemical reaction equation:

2C₂H₆ + 7O₂  →  4CO₂ + 6H₂O

1 mole = 22.414 L

There are 6 moles of water = 6×22.414 = 134.5 L

There are 7 moles of oxygen = 7×22.414 = 156.9 L

Now we will compare the litters of water and oxygen:

                              H₂O           :              O₂    

                              134.5         :              156.9

                                77.4         :             156.9/134.5×77.4 =90.3 L

So for the production of 77.4 L water 90.3 L oxygen is required.

8 0
3 years ago
How many molecules are in 228.7 grams of KBr?
Korvikt [17]

Answer:

the answer is 119.0023 grams

8 0
3 years ago
A gaseous hydrocarbon contains 80% carbon and 20% hydrogen, 1dm3 of the compound at s.t.p weighs 1.35g find the molecular formul
Cloud [144]

Answer:

C₂H₆

Explanation:

To obtain molecular formula of the gas, you need to find first its molecular mass.

To find molecular mass you need to obtain moles of gasbecause molecular mass is the ratio between mass of the gas and the volume it occupies.

As at STP, 1 mole of a gas occupies 22.4dm³, 1dm³ of gas are:

1dm³ × (1mol / 22.4dm³) = 004464moles.

Its molecular mass is:

1.35g / 004464moles =

30.24g/mol

Now, if the gas is 80%C and 20%H, its <em>empirical formula (Simplest ratio of atoms in a molecule) </em>is:

80% Carbon × (1mol / 12.01g) = 6.66moles C

20% Hydrogen × (1mol / 1.01g) = 19.8moles H

Ratio of H:C is:

19.8 mol H / 6.66mol C = 3

Thus, you can know you will have 3 moles of Hydrogen per mole of Carbon, CH₃ (It weighs 15.04g/mol)

As the gas weighs 30.24 ≈ 2 CH₃

The molecular formula is:

<h3>C₂H₆</h3>
4 0
3 years ago
Other questions:
  • What is the mass of 16.3 l of helium gas?
    14·1 answer
  • A 2.00 g sample of a bromine oxide (brxoy) is converted to 2.94 g of agbr. all the bromine in the original oxide compound ends u
    10·1 answer
  • How do you balance this chemical equation?
    10·1 answer
  • What happens to an atom of sulfur (S) if it loses an electron?
    8·2 answers
  • How are weathering and erosion different?
    8·1 answer
  • Which two biomes are known as the dry biomes?
    11·1 answer
  • The standard temperature and pressure of gases are OK and 1 atm, respectively. (T/F)
    14·1 answer
  • Most of Earth's atmosphere is made up of nitrogen gas. Nitrogen can also
    8·1 answer
  • What sign of chemical change occurs during chemiluminesence?
    15·1 answer
  • Draw the major 1,2- and 1,4-addition products that form as a result of the following reaction between one equivalent each of 2,4
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!