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
stepladder [879]
3 years ago
6

What is chemical formula and equation ?

Chemistry
1 answer:
Daniel [21]3 years ago
8 0

The answer to your question is,

Chemical formula is "a mathematical relationship or rule expressed in symbols". For example, H2 + O = H2O. < Water.

The equation H2 + O = H2O is two elements combining together. H, hydrogen. O, Oxygen. They form together to make a new compound of elements. Water. :))

-Mabel <3

You might be interested in
Which of these statements is true?
Effectus [21]
I think is number 4
8 0
2 years ago
Which describes the volume of 1 mol of gas at standard temperature and pressure?
Setler79 [48]

Volume of 1  mol of gas at standard temperature and pressure is 22.4 L.

That is using ideal gas equation:

PV = nRT

P=pressure

V=volume

n=number of moles

R=gas constant

T=temperature

at STP,

P=1 atm

T=273K

n=1(given)

Putting all the values in the equation will give,

V= 22.4 L

So, the answer is :

The volume of 1 mol of gas at standard temperature and pressure is 22.4 L.


3 0
3 years ago
12. Draw an energy curve for a chemical reaction that begins at 30 kj and has an activation energy of
Rufina [12.5K]

Answer:

  • <em>Since the activation energy is 50kJ , we need to supply it  50kJ from 30kJ to make it 80kJ .</em>
  • Diagram attached in the file .

8 0
3 years ago
Carboxylic acid derivatives undergo hydrolysis to make carboxylic acids.
monitta

Answer:

TRUE

Explanation:

All carboxylic acid derivatives have in common the fact that they undergo hydrolysis (a cleav- age reaction with water) to yield carboxylic acids. with hydroxide ion to yield a carboxylate salt and an alcohol. The carboxylic acid itself is formed when a strong acid is subsequently added to the reaction mixture.

PLS MARK BRAINLIEST

6 0
2 years ago
Read 2 more answers
Which liquid has the highest vapor pressure at 75°C?
Temka [501]

Answer:

1)  Ethanol

Explanation:

If we will have <u>interactions</u> we will need more <u>energy</u> to break them in order to go from liquid to gas. If we need more <u>energy</u>, therefore, the <u>temperature will be higher</u>.

In this case, we can discard the <u>propanone</u> because this molecule don't have the ability to form <u>hydrogen bonds</u>. (Let's remember that to have hydrogen bonds we need to have a hydrogen bond to a <u>heteroatom</u>, O, N, P or S).

Then we have to analyze the hydrogen bonds formed in the other molecules. For ethanol, we will have only <u>1 hydrogen bond</u>. For water and ethanoic acid, we will have <u>2 hydrogen bonds</u>, therefore, we can discard the ethanol.  

For ethanoic acid, we have 2 <u>intramolecular hydrogen bonds</u>. For water we have 2 <u>intermolecular hydrogen bonds</u>, therefore, the strongest interaction will be in the <u>ethanoic acid</u>.

The<u> closer boiling point</u> to the 75ºC is the <u>ethanol</u> (boiling point of 78.8 ºC) therefore these molecules would have <u>enough energy</u> to <u>break</u> the hydrogen bonds and to past from<u> liquid to gas</u>.

4 0
2 years ago
Other questions:
  • A reaction produces .815 moles of H2O. How many molecules produces?
    14·2 answers
  • 1 scientific law and 1 scientific theory ?
    7·1 answer
  • The most negative electron affinity is most likely associated with which type of atoms?
    14·1 answer
  • Looking for the products in a single replacement formula for: MgI2 + Cl2
    6·1 answer
  • Balance the following reaction: CH4 + O2→ CO2 + H2O<br> 46 points
    14·2 answers
  • Jaina just got home from a difficult workout. She is complaining of muscle soreness and cramps. Which waste product of fermentat
    6·1 answer
  • What is the minimum mass of 25°c water required to melt all 35.1 g of ice?
    15·1 answer
  • An irregular shaped sample of aluminum is put on a balance and found
    15·1 answer
  • How many molecules are there in 24 grams of HSO₃?
    15·1 answer
  • The metal aluminum coils in an air conditioner conduct thermal energy from inside the house and release it outside the house. Wh
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!