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
Pachacha [2.7K]
3 years ago
8

Initial temperature of metal= 100 C°

Chemistry
1 answer:
Vilka [71]3 years ago
3 0

Water is 22.4

Final for both us 27.1

Explanation:

I just finished this part of the lab

You might be interested in
I need to find the orbit notation<br> 1. Ne - 1s 2s 2p 3s 3p 4s 3d 4p 5s​
weeeeeb [17]

Answer:

1s*2 2s*2 2p*6

Explanation:

atomic number of neon is 10 so the s-shell contains 2 electron and p-shell contains 6

3 0
3 years ago
Of the following elements ____ can form a rare +4 ion *
swat32

Answer:

d is the answer.........

7 0
3 years ago
If you place 1.0 L of ethanol (C2H5OH) in a small laboratory that is 3.0 m long, 2.0 m wide, and 2.0 m high, will all the alcoho
ankoles [38]

If you place 1.0 L of ethanol (C2H5OH) in a small laboratory that is 3.0 m long, 2.0 m wide, and 2.0 m high, will all the alcohol evaporate? If some liquid remains, how much will there be? The vapor pressure of ethyl alcohol at 25 °C is 59 mm Hg, and the density of the liquid at this temperature is 0.785g/cm^3 .

will all the alcohol evaporate? or none at all?

Answer:

Yes, all the ethanol present in the laboratory will evaporate since the mole of ethanol present in vapor is greater. The volume of ethanol left will therefore  be zero.

Explanation:

Given that:

The volume of alcohol which is placed in a small laboratory = 1.0 L

Vapor pressure of ethyl alcohol  at 25 ° C = 59 mmHg

Converting 59 mmHg to atm ; since 1 atm = 760 mmHg;

Then, we have:

= \frac{59}{760}atm

= 0.078 atm

Temperature = 25 ° C

= ( 25 + 273 K)

= 298 K.

Density of the ethanol = 0.785 g/cm³

The volume of laboratory = l × b × h

= 3.0 m × 2.0 m × 2.5 m

= 15 m³

Converting the volume of laboratory to liter;

since 1 m³ = 100 L; Then, we  have:

15 × 1000 = 15,000 L

Using ideal gas equation to determine the moles of ethanol in vapor phase; we have:

PV = nRT

Making n the subject of the formula; we have:

n = \frac{PV}{RT}

n = \frac{0.078 * 15000}{0.082*290}

n = 47. 88 mol of ethanol

Moles of ethanol in 1.0 L bottle can be calculated as follows:

Since  numbers of moles = \frac{mass}{molar mass}

and mass = density × vollume

Then; we can say ;

number of moles = \frac{density*volume }{molar mass of ethanol}

number of moles =\frac{0.785g/cm^3*1000cm^3}{46.07g/mol}

number of moles = \frac{&85}{46.07}

number of moles = 17.039 mol

Thus , all the ethanol present in the laboratory will evaporate since the mole of ethanol present in vapor is greater. The volume of ethanol left will therefore be zero.

5 0
3 years ago
What did Dimitri meandered discover
Romashka [77]
The Elements (The Periodic Table.)
5 0
3 years ago
What process describes the transfer of heat through matter by molecular activity?
DIA [1.3K]
The process that describes the transfer of heat through matter by activity of the molecules would be conduction. This type of heat transfer due to the motion of electrons and ions. within a body. As molecules collide with each energy is transferred and released which cause temperature to rise or drop.<span />
8 0
3 years ago
Read 2 more answers
Other questions:
  • The interactions between water molecules and other non-water molecules through hydrogen bonding is known as ____________________
    9·1 answer
  • A scientist finds an unusual object and decides to study it. Which observation indicates that the object is a living thing?
    10·2 answers
  • An aqueous solution containing 5.06 g of lead(II) nitrate is added to an aqueous solution containing 6.03 g of potassium chlorid
    5·1 answer
  • When a chemical reaction destroys a solid
    7·1 answer
  • Covalent bonds are in the air you breathe and the water you drink. How are covalent bonds formed ? A) between atoms with more el
    13·1 answer
  • How could you demonstrate boiling point?
    9·1 answer
  • For the balanced equation shown below, what would be the limiting reagent if 93.9grams
    11·1 answer
  • What happens to the concentration of both H3O+ and OH- ions as water is added <br> to a base?
    13·1 answer
  • An object with a mass of 4.0 kg has a force of 12.0 newtons applied to it. What is the resultant acceleration of the object?
    9·1 answer
  • 23.It is possible to dilute a solution by...Select one:a. adding more solute to the solution.b. adding more solvent to the solut
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!