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
Tamiku [17]
3 years ago
6

Which is an example of a chemical change?

Chemistry
2 answers:
barxatty [35]3 years ago
4 0

Answer: For Apex would be Lighting a match

Explanation:

(Burning Wood)

ANEK [815]3 years ago
3 0
An exzample of chemicals change is wood burning
You might be interested in
Why can you see a corona during a total solar eclipse?
Mumz [18]

Answer:

The corona shines only about half as brightly as the Moon and is normally not visible to the unaided eye, because its light is overwhelmed by the brilliance of the solar surface. During a total solar eclipse, however, the Moon blocks out the light from the photosphere, permitting eye observations of the corona.

7 0
2 years ago
A 0.288 g sample of an unknown monoprotic acid is dissolved in water and titrated with a 0.115 M NaOH solution. After the additi
Sholpan [36]

Answer:

74.0 g/mol

Explanation:

Step 1: Write the generic neutralization reaction

HA + NaOH ⇒ NaA + H₂O

Step 2: Calculate the reacting moles of NaOH

At the equivalence point, 33.83 mL of 0.115 M NaOH react.

0.03383 L × 0.115 mol/L = 3.89 × 10⁻³ mol

Step 3: Calculate the moles of HA that completely react with 3.89 × 10⁻³ moles of NaOH

The molar ratio of HA to NaOH is 1:1. The reacting moles of HA is 1/1 × 3.89 × 10⁻³ mol = 3.89 × 10⁻³ mol.

Step 4: Calculate the molar mass of the acid

3.89 × 10⁻³ moles of HA have a mass of 0.288 g.

M = 0.288 g / 3.89 × 10⁻³ mol = 74.0 g/mol

4 0
3 years ago
An independent variable is what you___in an experiment. (There are no selections so please just answer it)
yaroslaw [1]

Answer:

Don’t change, keep the same

Explanation:

8 0
2 years ago
Consider the resonance structures of formate. the first lewis structure of formate has a central carbon atom. a hydrogen atom an
OleMash [197]
So,

Formate has a resonating double bond.

In molecular orbital theory, the resonating electrons are actually delocalized and are shared between the two oxygens.  So the carbon-oxygen bonds can be described as 1.5-bonds (option B).  I'm not sure if option C is correct, however, because the likelihood of both delocalized electrons being in the area of one oxygen atom is less than 50%.<span />
6 0
2 years ago
Calculate the molar concentration of the Cl⁻ ions in 0.92 M MnCl2(aq).
scZoUnD [109]
MnCl2(aq) is an ionic compound which will have the releasing of 2 Cl⁻ ions ions in water for every molecule of MnCl2 that dissolves.
MnCl2(s) --> Mn+(aq) + 2 Cl⁻(aq)
            [Cl⁻] = 0.92 mol MnCl2/1L × 2 mol Cl⁻ / 1 mol MnCl2 = 1.8 M
The answer to this question is [Cl⁻] = 1.8 M
4 0
3 years ago
Other questions:
  • What happens when an acid is added to pure water?
    8·1 answer
  • Normal cellular pH has a hydrogen concentration of 3.98 x 10-8 M. what is the pH of a cell
    15·1 answer
  • O2 +<br> C3H60 →<br> H2O +<br> CO2<br> Balance please
    8·1 answer
  • Conduction transfers thermal energy by____.
    13·2 answers
  • 5) Solid silver chloride, AgCl, precipitates when solution of silver nitrate, AgNO3, and iron (111) chloride,
    9·1 answer
  • A) Calculate the standard free-energy change at 25 ∘C for the following reaction:
    12·1 answer
  • HCHO2 + NaOH = NaCHO2 + H2O complete ionic
    11·1 answer
  • Ipt Hydrogen and oxygen react to produce water. Which of the following is the correctly balanced chemical equation
    6·1 answer
  • A 23.7 g piece of iron at 54.9 C is cooled and releases 338 J of heat. The specific heat of iron is 0.450 J/gC. What is the fina
    6·2 answers
  • Which type of monomer combines and forms polypeptides?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!