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
AlekseyPX
3 years ago
11

In which liquid does solid brass float?

Chemistry
2 answers:
zimovet [89]3 years ago
7 0
It’s A , Liquid Mercury
ch4aika [34]3 years ago
6 0

Answer:

A

Explanation:

You might be interested in
In addition to having a blue color, what other characteristic do Neptune and Uranus share?
Allisa [31]

Answer:

They are both planets made out of gas!

They both share methane, hydrogen and helium gases!

7 0
2 years ago
Read 2 more answers
rusting of steel can be prevented by coating the steel with a layer of zinc. Explain, in terms of electron transfer, why steal d
Luba_88 [7]

Answer:

Wouldn't rust because zinc will lose electrons more readily than iron and will therefore oxidize first.

Explanation:

This process whereby rusting of steel is prevented by coating the steel with a layer of zinc is known as galvanization.

Now, in this process, the steel object will be coated in a thin layer of zinc. This coating will prevent oxygen and water from reaching the underneath metal since the zinc will also act as a sacrificial metal.

Now, Zinc is used because it has a lower reduction potential than iron and thus it will get easily more oxidized than iron. Which means the zinc will lose electrons more readily than iron.

Also, since zinc has a lower reduction potential, it is therefore the more active metal. Thus, even if the zinc coating is scratched and the steel is exposed to moist air, the zinc will still get to oxidize before the iron.

7 0
2 years ago
A) Calculate the osmotic pressure difference between seawater and fresh water. For simplicity, assume thatall the dissolved salt
never [62]

Answer:

a)  Δπ = 1.264 atm

b) W = 128 joules

c)  ΔH >> W  ( a factor greater than 17,000 )

Explanation:

a) The osmotic pressure, π , is determined by :

π = nRT/V, where n= moles of solute

                          R= 0.0821 Latm/kmol

                          T = 300 K

calling π(sw) osmotic pressure for  for sea water and π (fw) for fresh water,

salinity of sea water = 3.5 g / 1L water   (assuming only NaCl for the salts)

salinity of fresh water = 0.5 parts per thousand (range: 0- 0.5 ppt)

πsw = (3.5 g/58.44 g/mol) (0.0821 Latm/Kmol) (300 K ) /1 L = 1.475 atm

πfw = (0.5 g/58.44 g/mol) (0.0821 Latm/Kmol) (300 K ) /1 L = 0.211 atm

d water = 1 g/cm³

Δ π = (1.475 - 0.211) = 1.264 atm

b) W = Δπ V = 1.426 atm x 1L = 1.43 L-atm

1 L-atm = 101.33 j

W =  101.33 j/ Latm x  1.43 Latm = 128 joules

c) ΔH = Q₁ + nΔH vap, where

            Q₁  = heat required to bring the solution from 300 K to boiling, 373 K

            ΔH vap = heat of vaporization

Q = mCΔT = 1000 g x 4.186 j x 73 K = 305.6 j = 0.3056 kj

ΔH vap = (1000 g/ 18 g/mol ) 40.7 kj/mol = 2,261 kj

ΔH =  0.3056 kj + 2,261 kj = 2,261.3 kj

Note = Q << ΔH vap and we could have neglected it.

This result shows why nobody talks about evaporation of sea water to produce fresh water ΔH >> W

6 0
3 years ago
How to separate aluminum powder and ethyl alcohol mixture?
ddd [48]

Answer:

            By Filtration using Filter Paper

Explanation:

                  Aluminium Powder is made from Aluminium with the help of mechanical means. This powder is mainly used in paints, cosmetics, fingerprint powders, thermite, rocket fuels e.t.c.

                  Also, Aluminium Powder is insoluble in water and organic solvents. Therefore, when mixed in Ethanol it will form a suspension. The Aluminium Powder can therefore be easily separated by simple Filtration using Filter paper.

6 0
3 years ago
How do forces between particles in gases compare to forces in the other
Ber [7]

Answer:

A. The forces in gases are weaker than forces in solids but stronger

than forces in liquids.

5 0
2 years ago
Other questions:
  • Please help me I can’t figure it out
    15·1 answer
  • How much heat will be released when 10.0 g of hydrogen peroxide decomposes according to the following reaction: 2H2O2(l) 2H2O(l)
    7·1 answer
  • Plzz need help will give alot of point!!!!!!
    7·1 answer
  • What happens immediately before a volcano erupts?
    12·1 answer
  • Which of the following is a solid? A) ice B)water C)vapor D) lightning.
    8·2 answers
  • Which of the following forms a molecular solid? Which of the following forms a molecular solid? C, graphite C10H22 CaO gold
    14·1 answer
  • Wat is a redox reaction
    8·1 answer
  • What family has 4 valence electrons?
    15·1 answer
  • A scientist observes that the electrical resistance of a superconducting material drops to zero when the material is cooled
    9·1 answer
  • Water is made of polar molecules, and oil is made of nonpolar molecules. Based on your observations, which molecules attract eac
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!