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
Virty [35]
4 years ago
13

What are two methods of writing a balanced formula?

Chemistry
1 answer:
Irina-Kira [14]4 years ago
8 0
Format Method - Writing the symbol of the cation and then the anion. Add whatever subscripts in order to balance the charges.

Crisscross Method - The numerical value of the charge of each ion is crossed over and becomes the subscripts for the other ion.
You might be interested in
Use the problem below to answer the question: 34 grams of carbon reacted with an unlimited amount of H2O. The reaction is: C + H
stiks02 [169]

Answer:

There will be produced 79.30 grams of CO and 5.707 grams of H2

Explanation:

The complete question:

Work the entire problem from the beginning.

How many grams of H2 and CO would be formed if 34 grams of carbon reacted with an unlimited amount of H2O? The reaction is:

C + H2O → CO + H2

The atomic mass of C is 12.01 g/mole. The atomic mass of H2 is 2.016 g/mole.

Step 1: Data given

Mass of carbon = 34.00 grams

H2O is in excess

Molar mass of carbon = 12.01 g/mol

Molar mass of H2 = 2.016 g/mol

Step 2: The balanced equation

C + H2O → CO + H2

Step 3: Calculate moles  of carbon

Moles carbon = Mass carbon / molar mass of carbon

Moles carbon = 34.00 g / 12.01 g/mol

Moles carbon = 2.831 moles

Since carbon is the limiting reactant. it will completely be consumed. There won't remain any carbon.

Step 4: Calculate moles of H2O

For 1 mol carbon we need 1 mol of H2O

For 2.831 mol of carbon we need 2.831 moles of H2O

Mass of H2O = 18.02 g/mol * 2.831 moles = 51.01 grams

There will react 51.01 grams of H2O

Step 5: Calculate moles of CO and H2

For 1 mol C we need 1 mol of H2O to produce 1 mol of CO and 1 mol of H2

For 2.831 mol of C and 2.831 mol of H2O we'll have 2.831 mol of CO and 2.831 mol of H2

Step 6: Calculate mass of CO and H2

Mass of CO = 2.831 moles * 28.01 g/mol = 79.30 grams

Mass of H2 = 2.831 moles * 2.016 g/mol = 5.707 grams

There will be produced 79.30 grams of CO and 5.707 grams of H2

5 0
3 years ago
Methionine, ch3sch2ch2ch(nh2)co2h, is an amino acid found in proteins. what is the hybridization type of each carbon, oxygen, th
Lady_Fox [76]
Answer 1) To find the hybridization of carbon we need to draw the lewis structure first; which is attached in the answer.

So the formula for finding hybridization is 
Lone pairs + Bonding pairs = hybridisation.

Here, in the molecule of methionine Carbon is bonded to all 4 atoms and has got no lone pairs so we will have;

0 + 4 = 4 which means it is sp^{3} hybridized.

Answer 2) For oxygen we can see in the lewis structure that it is having 2 lone pairs and double bonded with carbon atom, also there is another oxygen atom with two lone pair but bonded with carbon and hydrogen at the end.

So, in both the cases we can calculate;

where 2 lone pairs are present  
2 + 2 = 4 so, it will be sp^{3} hybridized.

So, Oxygen is also sp^{3} hybridized.

Answer 3) Nitrogen present in the methionine is bonded to carbon atom and hydrogen atoms and has only one lone pair on it.

So when we are substituting this in the formula we get 1 + 3 = 4;

which means 1 lone pair and 3 bond pairs so, it is also sp^{3} hybridized.

Answer 4) Sulfur atom in methionine is bonded to two carbon atoms forming a linear structure with 2 lone pairs on it.

So, it has 2 lone pairs and 2 bond pairs,

hence the hybridization will be  sp^{3} hybridized. 

As, 2 + 2 = 4 which means it is  sp^{3} hybridized.

5 0
3 years ago
(Direct answer=Upvote :))
Murrr4er [49]
Volume, even if you have alot of a matter, color, melting point, and density do not change, but volume does.
7 0
3 years ago
18) Mg and S would be expected to react in a ratio of: <br> (1:1, 2:1, 1:2 or 2:3)
lord [1]

Answer:

1:1.

Explanation:

Hello!

In this case, since magnesium, in the form that is able to react with sulfur, has an oxidation state of 2+ and sulfur 2-, because they need to be different in order to form a suitable compound; due to that equality in their oxidation states, we expect they react in a 1:1 mole ratio, according to the following example:

Mg+S\rightarrow MgS

Best regards!

8 0
3 years ago
What is the mass percent of hydrogen in hexanal?
yKpoI14uk [10]
12.1% is the mass percent of hydrogen in hexanal
5 0
4 years ago
Read 2 more answers
Other questions:
  • The subatomic particle that has. Positive charge and is found in the nucleus an atom is
    8·1 answer
  • In your own words, compare and contrast transverse and longitudinal waves. Be sure to include at least one similarity and one di
    5·1 answer
  • Can someone please helpppp!
    14·1 answer
  • Which of the following expands to fill the container it is in, but can be compressed to a smaller volume when pressure is applie
    13·2 answers
  • The weight of the buggy was 40N on Mars. When the buggy landed on Mars it rested on an area of 0.025 m2. Calculate the pressure
    7·1 answer
  • If you were asked to convert 3.5 moles of aluminum to grams, which of the following should you use for the conversion? . Select
    7·1 answer
  • ____ N2 + ___ H2 --&gt; ____ NH3<br> Reaction :
    10·1 answer
  • The volume of 350. mL of gas at 25°C is decreased to 250. mL at
    7·1 answer
  • Q.does salt make water boil at a higher temperature?
    13·2 answers
  • How do gas particles respond to an increase in volume?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!