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
Fantom [35]
3 years ago
14

Helppppp asappp idkkkll how to do thisssss!!!

Chemistry
1 answer:
horsena [70]3 years ago
5 0
It is b i am pretty sure
You might be interested in
Radiation is a measure of average kinetic energy of particles in an object true or false ​
laila [671]

Answer:false

Explanation:

4 0
3 years ago
A balloon is filled to a volume of 1.6 L at 278 K. The balloon is left outside overnight and the temperature has dropped to 253
german

Explanation:

Charles' law gives the relationship between the volume and the temperature of the gas. Mathematically,

Volume ∝ Temperature

i.e. \dfrac{V_1}{V_2}=\dfrac{T_1}{T_2}

We have, V₁ = 1.6 L, T₁ = 278 K, T₂ = 253, V₂=?

V_2=\dfrac{V_1T_2}{T_1}\\\\V_2=\dfrac{1.6\times 253}{278}\\\\V_2=1.45\ L

So, the new volume is 1.45 L.

6 0
3 years ago
At what temperature in the Kelvin scale does water boil? Explain what happen when we supply heat energy to water till it changes
erma4kov [3.2K]
100 +273=373 kelvins
7 0
3 years ago
Using the periodic table, determine which material is most likely to be a good conductor. A. sodium B. bromine C. carbon D. oxyg
grandymaker [24]
A. Because sodium is a metal and metals are good conductors
7 0
3 years ago
The thallium (present as Tl2SO4) in a 9.486-g pesticide sample was precipitated as thallium(I) iodide. Calculate the mass percen
tino4ka555 [31]

Answer: The mass percentage of Tl_2SO_4 is 5.86%

Explanation:

To calculate the mass percentage of Tl_2SO_4 in the sample it is necessary to know the mass of the solute (Tl_2SO_4 in this case), and the mass of the solution (pesticide sample, whose mass is explicit in the letter of the problem).

To calculate the mass of the solute, we must take the mass of the TlI precipitate.  We can establish a relation between the mass of TlI and Tl_2SO_4 using the stoichiometry of the compounds:

moles\ of\ TlI = \frac{0.1824 g}{331.27\frac{g}{mol} } = 5.51*10^{-4}\ mol.

Since for every mole of Tl in TlI there are two moles of Tl in Tl_2SO_4, we have:

moles\ of\ Tl_2SO_4 = 2 * moles\ of\ TlI = 1,102*10^{-3}\ mol

Using the molar mass of Tl_2SO_4 we have:

mass\ of\ Tl_2SO_4 = 1,102*10^{-3}\ mol * 504.83\ \frac{g}{mol}= 0.56\ g

Finally, we can use the mass percentage formula:

mass\ percentage = (\frac{solute\ mass}{solution\ mass} )*100 = (\frac{mass\ of\ Tl_2SO_4}{pesticide\ sample\ mass})*100 = (\frac{0.56g}{9.486g})*100 = 5.86\%

6 0
3 years ago
Other questions:
  • Nylon is an important component in many products. One step in the production of nylon is the reaction of cyclohexane with oxygen
    11·1 answer
  • For every Pb+2 ion that is formed, how many Cl- ions are formed? (Refer to the reaction in the lesson above.)
    5·1 answer
  • How many ammonium ions and how many sulfate ions are present in a 0.270 mol sample of ?
    12·1 answer
  • What is the symbol for molarity?<br><br> m<br> M<br> g<br> l
    8·1 answer
  • 22. What is a comet?
    5·1 answer
  • 3 difference between Homogeneous mixture and Heterogeneous Mixture​
    10·1 answer
  • Urgent plzz help meeee thx I HAVE EXAMEEE
    9·1 answer
  • What ion is formed When a atom Of mercury (hg) Loses two electron
    5·1 answer
  • Which of the following is a renewable resource a. copper b. aluminum c. peanut oil d. natural gas​
    11·2 answers
  • What are elements and how many elements discovered
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!