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
Sedaia [141]
3 years ago
9

Please help this is due tomorrow!

Chemistry
1 answer:
lbvjy [14]3 years ago
7 0
I had this same question on one of are worksheets is D I can’t really explain it but the answer is D
You might be interested in
For which process is ΔS negative? Group of answer choices A. grinding a large crystal of KCl to powder B. raising the temperatur
ludmilkaskok [199]

Answer:

C.

Explanation:

The entropy (S) is the measure of the randomness of a system, and ΔS = Sfinal - Sinitial. As higher is the disorder of the system, as higher is the entropy.

A. When KCl is fractionated in power, there'll be more portions of it, so, the disorder must be higher, then ΔS is positive.

B. As higher is the temperature, higher is the kinetic energy of the system, and because of that, the disorder is also higher, so ΔS is positive.

C. The decrease in the volume (compression) decreases the distance between the molecules, so the system will be more organized, then ΔS is negative.

D. The volume before the mixing will be higher, and the ethanol will dissociate, so it will be more particles, the disorder will increase, and ΔS is positive.

E. Sgas > Sliquid > Ssolid because of the disorder of the molecules, then ΔS is positive.

5 0
3 years ago
What does chemistry have to do with drug testing
diamong [38]

Answer:

Forensic drug chemists analyze samples of unknown materials including powders, liquids and stains to determine the chemical identity or characteristics of the compounds that make up the sample. samples submitted as evidence in a drug-related case can contain one compound or a mixture of many compounds.

5 0
3 years ago
When the pH of an aqueous solution is 8, what is the OH- ion concentration in moles per liter?
Lilit [14]

Answer:

D. 12 is 1 × 10-6

Explanation:

8 0
3 years ago
If this were a frictionless plane, what would be the ideal mechanical advantage?
slava [35]
<span>The answer is C)
mechanical advantage (MA = slope/height)
here length of slope = 9Hheight = H                                                 so mechanical advantage = ---- 9H/H= 9                                                  
</span>
8 0
3 years ago
How many significant figures in 11 soccer players
maria [59]
Counting gives an exact number and exact numbers have infinite sig figs.
3 0
3 years ago
Other questions:
  • The Haber process is used to make ammonia, which is an important source of nitrogen that can be metabolized by plants. Using the
    12·1 answer
  • How a convection current can enable a hawk or eagle to soar upward without flapping its wing 
    14·2 answers
  • Step by step on how to find limiting reactant, with an example please!
    13·1 answer
  • In this equation: FeBr2+K2CO3=Fe2(CO3)2+KBr do I simplify the 2's on iron and the CO3 on the "right side" before continuing or k
    14·1 answer
  • Chlorine can form a maximum of bonds
    11·1 answer
  • A helium balloon containing 0.100 mol of gas occupies a volume of 2.4 L at 25 C and 1.0 atm. how many moles have we added if we
    8·1 answer
  • What is the difference between a compound and a mixture? Group of answer choices One is a solid and the other is a liquid. They
    10·1 answer
  • 2 Points
    6·2 answers
  • I don’t understand this page, can someone help?
    7·1 answer
  • Given the reaction below, if 0.003 g of carbon dioxide is used up, how many grams of oxygen will be produced? (show work)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!