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
USPshnik [31]
3 years ago
7

Hurry need answer as soon as possible please . Compare the type of change that occurs when a substance melts and when a substanc

e is set on fire. Use complete sentences to justify the type of change that occurs.
Chemistry
1 answer:
tamaranim1 [39]3 years ago
5 0

Answer:

Explanation:

A substance melting is a physical change and the properties of the substance will remain same, only that the substance will just become liquid.

On the other hand, burning is a chemical change which produces an entirely new compount(in most cases, ash) which does not have the same properties as the original object

You might be interested in
Can you help.me this above question. ..​
matrenka [14]

Answer:

Explanation:

Chlorine halogen

Non-metal oxygen

Metal calcium

Ethyne C2H2

Ethene C2H4

4 0
4 years ago
This gas law works only if temperature is recorded in ———— units
Vsevolod [243]

Answer:

Kelvin

Explanation:

  • Gas laws re the laws that relates properties of gases such as pressure, temperature and volume at different conditions.
  • Gas laws includes, Boyle's law, Charles law, grahams law and pressure law among others.
  • Temperature is one of the quantity of gases explained by gas laws. For gas laws to work, temperature should always be in Kelvin. Therefore, when given temperature in degrees, it is converted to Kelvin by adding 273, that is °C + 273 = K.
8 0
3 years ago
3Al + 3NH4ClO4 → Al2O3 + AlCl3 + 3NO + 6H2O<br> How many moles of AlCl3 are produced?
zhuklara [117]

Answer: 1 mol of AlCl_3 will be produced from this reaction.

Explanation: Reaction follows,

3Al+3NH_4ClO_4\rightarrow Al_2O_3+AlCl_3+3NO+6H_2Oc

As seen from the balanced chemical equation above, we get

For every 3 moles of Aluminium and 3 moles of NH_4ClO_4, 1 mole of Al_2O_3 is formed.

For every 3 moles of Aluminium and 3 moles of NH_4ClO_4, 1 mole of AlCl_3 is formed.

For every 3 moles of Aluminium and 3 moles of NH_4ClO_4, 3 moles of NO is formed.

For every 3 moles of Aluminium and 3 moles of NH_4ClO_4, 6 moles of H_2O is formed.

7 0
4 years ago
Read 3 more answers
Which set of data would be best illustrated with a graph bar?
polet [3.4K]

Answer:

Graphs should be titled.

Although the bunnies feed foxes, if there are TOO many foxes, they don’t go well; so that looked cyclic to me. It is a good argument.

STUDY VS GRADES is INCREASINGLY

OBVIOUS! I already know what hummingbirds like. Rain can help wash the smoke from forest fires from the air; do you pick one, OK?

Don’t be nervous - study more. I’ve had a great many students, and they not only survived my classes - most THRIVED!

Explanation:

5 0
3 years ago
The President's Challenge Program is a fitness evaluation designed for __________.
lara [203]
Hi there!

I believe the answer to this is B. Elementary and High school students.

Hope this helps! ☺♥
7 0
3 years ago
Read 2 more answers
Other questions:
  • If the initial concentration of NOBr is 0.0440 M, the concentration of NOBr after 9.0 seconds is ________. If the initial concen
    14·1 answer
  • Which of the following statements best describes the Aufbau principle?
    8·1 answer
  • Liquids that dissolve freely in one another in any proportion are
    14·1 answer
  • What is the formula of given elements: a). Tungsten b). Lead c). Calcium d). Ziriconium​
    15·2 answers
  • Please help some one I’ve been trying this all day and it’s due in 5 min
    11·1 answer
  • Decribe the difference between and climate.
    14·1 answer
  • Given that H 2 ( g ) + F 2 ( g ) ⟶ 2 HF ( g ) Δ H ∘ rxn = − 546.6 kJ H2(g)+F2(g)⟶2HF(g)ΔHrxn°=−546.6 kJ 2 H 2 ( g ) + O 2 ( g )
    15·2 answers
  • Question is in picture! Due in 30 minutes!
    15·1 answer
  • 50 POINTS!!!!!!!!!
    14·1 answer
  • What does this mean and how do I answer?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!