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
klemol [59]
1 year ago
9

Calculating and using the molar mass of diatomic elements

Chemistry
1 answer:
beks73 [17]1 year ago
4 0
Moles(grams/moles)
F2=19.00(2)=38g

0.075(38g/mol) =2.9
You might be interested in
Predict the sign for AS for each of the following systems: Water freezing Water evaporating Crystalline urea dissolving Assembly
djyliett [7]

Answer:  1.  Water freezing : \Delta S is -ve.

2. Water evaporating : \Delta S is +ve.

3. Crystalline urea dissolving : \Delta S is +ve.

4. Assembly of the plasma membrane from individual lipids: \Delta S is -ve.

5.  Assembly of a protein from individual amino acids: \Delta S is -ve.

Explanation:

Entropy is defined as the measurement of degree of randomness in a system.

It is represented by symbol S and we can only measure a change in entropy which is given by \Delta S.

If there is decrease in randomness , the sign for \Delta S is -ve and If there is increase in randomness , the sign for \Delta S is +ve.

1.  Water freezing: Entropy decreases as we move from liquid state to  to solid state and thus \Delta S is -ve.

2. Water evaporating : Entropy increases as we move from liquid state to  gaseous state and thus \Delta S is +ve.

3. Crystalline urea dissolving : The molecules convert from solid and ordered state to aqueous phase and random state. Thus the entropy increases and thus \Delta S is +ve.

4. Assembly of the plasma membrane from individual lipids:  random lipids are associating to form a single large polymer and thus entropy decreases and thus \Delta S is -ve.

5. Assembly of a protein from individual amino acids: random amino acids are associating to form a single large polymer and thus entropy decreases and thus \Delta S is -ve.

5 0
3 years ago
Ethan pushes a wooden box across a carpeted floor. Then he pushes the same box across a smooth marble floor. Why does Ethan find
Sholpan [36]
Because there is less friction on the marble floor.
3 0
3 years ago
How many grams of oxygen are produced when 3.0 moles of potassium chlorate decompose completely?
Elena-2011 [213]
ሠረዕጎነዘሠጋዕጕነጋሠሀነዘነጋዕዘቿዘነዘ :)
4 0
3 years ago
What physical property makes metal pots good for cooking?
jeka94
Metal pots are good for cooking because they have heat conductivity.
4 0
3 years ago
Read 2 more answers
The The thermal conductivity of a sheet of rigid, extruded insulation is reported to be k=0.029 W/ m measured temperature differ
vfiekz [6]

Answer:

Heat flux = 13.92 W/m2

Rate of heat transfer throug the 3m x 3m sheet = 125.28 W

The thermal resistance of the 3x3m sheet is 0.0958 K/W

Explanation:

The rate of heat transfer through a 3m x 3m sheet of insulation can be calculated as:

q=-k*A*\frac{\Delta T}{\Delta X}\\\\q=-0.029\frac{W}{m*K}*(3m*3m)*\frac{12K}{0.025m}  =125.28W

The heat flux can be defined as the amount of heat flow by unit of area.

Using the previous calculation, we can estimate the heat flux:

heat \, flux=\frac{q}{A}=\frac{125.28 W}{9 m^{2} }  =13.92 W/m^{2}

It can also be calculated as:

q/A=-k*\frac{\Delta T}{\Delta X}

The thermal resistance can be expressed as

\Delta T=R_t*Q\\R_t=\Delta T/Q=\frac{\Delta X}{k*A}

For the 3m x 3m sheet, the thermal resistance is

R_t = \frac{\Delta X}{k*A}=\frac{0.025m}{0.029W/mK*9m^{2}}=0.0958 \, K/W

4 0
3 years ago
Other questions:
  • 1. Explain Why is Earth's<br>atmosphere important to life<br>on Earth?​
    6·1 answer
  • A particular substance has a measured solubility in water of 3.6 g/1.0 L. How much of the substance can be dissolved in 650 L of
    11·1 answer
  • What is the volume of 2.00 moles of chlorine (cl2 ) gas at stp, to the nearest tenth of a liter?
    12·1 answer
  • We use oxidation numbers to help us do what?
    5·2 answers
  • 58.5g of sodium iodide are dissolved in 0.5dm3. what concentration would this be?
    6·1 answer
  • What is the molecular geometry of H2O?
    15·1 answer
  • Using the graphs below, which group of moths is better adapted to survive the hunting cycle?
    11·1 answer
  • An example of a physical change is
    9·2 answers
  • How do liquid water, ice, and water vapor differ from each other?
    9·2 answers
  • 6. Which change to a population would cause
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!