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
Firdavs [7]
3 years ago
8

Can anybody plz answer

Chemistry
1 answer:
Lelechka [254]3 years ago
3 0

Answer: heat

Other indicators: color change, odor, gas, temperature change.

You might be interested in
How many electrons does an atom of chromium have
Gre4nikov [31]
Answer: 24 electrons
7 0
4 years ago
Read 2 more answers
What are the observed effects of sleep deprivation on leptin and ghrelin?
Afina-wow [57]

Answer:

Lack of sleep increases hunger hormone ghrelin and decreases the satiety hormone leptin which may help explain the association between inadequate sleep and overweight.

Explanation:

6 0
4 years ago
If 250. ML of water are poured into the measuring cup, the volume reading is 8.45 oz . This indicates that 250. ML and 8.45 oz a
Tamiku [17]

Answer:

1oz=29.589ml

Explanation:

From the question we are told that:

Initial Volume v_1=250ml

Final Volume v_2=8.45oz

Generally the equation for one ounce is mathematically given by

 1oz=\frac{v_1}{v_2}

Therefore

 1oz=\frac{250}{8.45}

 1oz=29.589ml

7 0
3 years ago
Which of the following processes have a ΔS < 0? Which of the following processes have a ΔS < 0? carbon dioxide(g) → carbon
Umnica [9.8K]

Answer:

All of the above processes have a ΔS < 0.

Explanation:

ΔS represents change in entropy of a system. Entropy refers to the degree of disorderliness of a system.

The question requests us to identify the process that has a negative change of entropy.

carbon dioxide(g) → carbon dioxide(s)

There is  a change in state from gas to solid. Solid particles are more ordered than gas particles so this is a negative change in entropy.

water freezes

There is  a change in state from liquid to solid. Solid particles are more ordered than liquid particles so this is a negative change in entropy.

propanol (g, at 555 K) → propanol (g, at 400 K)

Temperature is directly proportional to entropy, this means higher temperature leads t higher entropy.

This reaction highlights a drop in temperature which means a negative change in entropy.

methyl alcohol condenses

Condensation is the change in state from gas to liquid. Liquid particles are more ordered than gas particles so this is a negative change in entropy.

6 0
3 years ago
Hannah added a silvery white metal to a beaker of cold water and noticed that
Schach [20]

Answer:

A. Hot water increases the collision rate of the molecules, causing the

reaction to occur faster.

Explanation:

Hot water molecules move faster than cold water molecules.

3 0
3 years ago
Other questions:
  • In the first paragraph, the words "disrobed," "unveiling" and<br> "deconstructed" primarily serve to
    8·2 answers
  • NaCl<br> Quantity of element
    13·2 answers
  • A potassium permanganate solution is prepared by dissolving 22.14g of KMnO4 in water and diluting to a total volume of 1.000 L.
    8·1 answer
  • Find the energy of the photon if the frequency is 1.97 × 10^8 s^-1
    12·1 answer
  • The__ contains all the elements l, arranged according to similarities in their properties​
    11·1 answer
  • 1) Which of the following is the smallest unit of a chemio<br> Tallest unit of a chemical element?
    14·1 answer
  • Which of the following statements correctly explain the relationship between the solubility of a gas and its pressure?a. As pres
    7·1 answer
  • How to change aniline into phenyl isocyanide
    12·1 answer
  • HELP! <br> A train travels 102 miles in 2 5/6 hours. What is its average speed in miles per hour?
    13·1 answer
  • Ferrophosphorus (Fe2P) reacts with pyrite (FeS2) producing iron(II) sulfide and a compound that is 27.87% P and 72.13% S by mass
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!