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
Luba_88 [7]
2 years ago
11

Which of these is an example of a chemical change?

Chemistry
1 answer:
Elena-2011 [213]2 years ago
3 0

Answer:

D. Burning a peice of wood

Explanation:

Because when you burn wood a chemical reaction happenes between the flames and the wood making the wood into ashes.

Hope this helps you :)

You might be interested in
Na2CO3 + CO2 + H2O → NaHCO3
Veseljchak [2.6K]

Answer:

i think the answer is d

Explanation:

8 0
3 years ago
At what point does salt melt
fredd [130]
Salt melts at 116°c.
7 0
3 years ago
Read 2 more answers
A judge in a juvenile court can dispose a juvenile runaway to a residential facility.
ratelena [41]
The answer is true. I know this because it almost happened to me.

3 0
3 years ago
Read 2 more answers
HCl(?) + H2O(?) → H3O+(?) + Cl-(?)
larisa86 [58]

Answer:

Transcribed image text: Answer.

the following question for the mixing of gaseous hydrogen chloride with water to make hydrochloric acid. HCl) + H2O(2) → H30*) + Cl (2) What is the phase label on HCI? aq

6 0
2 years ago
The half-life of nitrogen-13 is 10.0 minutes. if you begin with 53.3 mg of this isotope, what mass remains after 25.9 minutes ha
zimovet [89]

Hello!

The half-life is the time of half-disintegration, it is the time in which half of the atoms of an isotope disintegrate.

We have the following data:

mo (initial mass) = 53.3 mg

m (final mass after time T) = ? (in mg)

x (number of periods elapsed) = ?

P (Half-life) = 10.0 minutes

T (Elapsed time for sample reduction) = 25.9 minutes

Let's find the number of periods elapsed (x), let us see:

T = x*P

25.9 = x*10.0

25.9 = 10.0\:x

10.0\:x = 25.9

x = \dfrac{25.9}{10.0}

\boxed{x = 2.59}

Now, let's find the final mass (m) of this isotope after the elapsed time, let's see:

m =  \dfrac{m_o}{2^x}

m =  \dfrac{53.3}{2^{2.59}}

m \approx \dfrac{53.3}{6.021}

\boxed{\boxed{m \approx 8.85\:mg}}\end{array}}\qquad\checkmark

I Hope this helps, greetings ... DexteR! =)

3 0
2 years ago
Other questions:
  • If a copper acetate hydrate, Cux(C2H3O2)y zH2O compound is found to contain 31.82% Copper, 59.14% acetate, and the remainder is
    11·1 answer
  • Select all of the following statements which are true of water.
    9·1 answer
  • Which element has the same number of valence electrons as hydrogen (H)? A. helium (He). . B. oxygen (O). . C. nitrogen (N). . D.
    8·2 answers
  • What is the mass (in grams) of 9.93 Ă— 1024 molecules of methanol (CH3OH)?
    14·1 answer
  • La lluvia acida es un fenomeno a nivel local o Regional?
    13·1 answer
  • How is a compound different from a mixture?
    15·2 answers
  • Which of the following will have a larger radius than zinc ? Gallium (Ga) Magnesium (Mg) Aluminum (Al) Strontium (St)
    8·1 answer
  • 2. A chemical reaction occurs when substances interact and their atoms
    8·1 answer
  • Which method of galaxy formation is expected to dominate far in the future? (1 point
    13·1 answer
  • SIGNIFICANT FIGURES ARE FIGURES WITH
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!