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
Alik [6]
1 year ago
8

Hello people ~

Chemistry
1 answer:
son4ous [18]1 year ago
7 0

The m.p. and b.p. of Po, is lower than Te due to

<u>a) inert pair effect</u>

You might be interested in
You have 50 ml of a complex mixture of weak acids that contains some HF (pKa = 3.18) and some HCN (pKa = 9.21). Which is larger,
bonufazy [111]

Answer:

\frac{[F^{-}]}{[HF]} is larger

Explanation:

pK_{a}=-logK_{a} , where K_{a} is the acid dissociation constant.

For a monoprotic acid e.g. HA, K_{a}=\frac{[H^{+}][A^{-}]}{[HA]} and \frac{[A^{-}]}{[HA]}=\frac{K_{a}}{[H^{+}]}

So, clearly, higher the K_{a} value , lower will the the pK_{a}

In this mixture, at equilibrium, [H^{+}] will be constant.

K_{a} of HF is grater than K_{a} of HCN

Hence, (\frac{F^{-}}{[HF]}=\frac{K_{a}(HF)}{[H^{+}]})>(\frac{CN^{-}}{[HCN]}=\frac{K_{a}(HCN)}{[H^{+}]})

So, \frac{[F^{-}]}{[HF]} is larger

5 0
3 years ago
How many moles are there in 990 grams of sugar, C12H22011? (Sig Figs, do not
Nitella [24]

Answer:

Number of moles = 2.89 mol

Explanation:

Given data:

Number of moles of sugar  = ?

Mass of sugar = 990 g

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of C₁₂H₂₂O₁₁:

12× 12 + 22×1.008 + 16×11 = 342.2 g/mol

Number of moles = 990 g / 342.2 g/mol

Number of moles = 2.89 mol

6 0
3 years ago
Calculate the total pressure in a 10.0 liter flask at 27°C of a sample of gas that contains 6.0 grams of hydrogen, 15.2 grams of
motikmotik

Answer:

The total pressure is 27.8 atm

Explanation:

From the ideal gas equation,

PV = nRT

P (total pressure) = nRT/V

n (total moles of gases) = (6/1 moles of hydrogen) + (15.2/14 moles of nitrogen) + (16.8/4 moles of helium) = 6+1.1+4.2 = 11.3 moles

R = 0.082057L.atm/gmol.K, T = 27°C = 27+273K = 300K, V = 10L

P = 11.3×0.082057×300/10 = 27.8 atm

7 0
3 years ago
What is the molar mass of magnesium chlorite (Mg(CIO2)2)?
sveticcg [70]
Hope this helps! 159.2086<span>Have a Good Day!</span>
4 0
3 years ago
What are the two processes underlying this image that turn peat into coal
Travka [436]

Answer:

Peatification and coalification

Explanation:

https://energyeducation.ca/encyclopedia/Coal_formation

8 0
3 years ago
Read 2 more answers
Other questions:
  • What are translation metals
    12·2 answers
  • You have been working to develop a new fictitious compound in the lab. Determine the amount in units of moles​ [mol] of 20 grams
    14·1 answer
  • A sample gaseous CO exerts a pressure of 45.6mm Hg in a 56.0L flask at 22 C. If the gas is released into a 2.70 x 10^4 liter roo
    6·1 answer
  • Which statement is true? A molecule having a covalent bond can be ionic. A molecule having a covalent bond is always polar. A mo
    8·2 answers
  • What is the most efficient way to make up a hepes buffer at ph 8.5?
    5·1 answer
  • 3) How much energy does it take to condense 26.5 g of H0 at 100°C?<br> Equation:
    15·1 answer
  • Use what you have learned about the types of energy that travel from the Sun to Earth to match each term with its description.
    14·2 answers
  • If the wavelength of light will cause electrons to be removed from the metal (creating the photoelectric effect). What is the ef
    10·1 answer
  • Explain in your own words what the law of conservation of mass means
    14·1 answer
  • An aqueous solution of copper(II) sulfate is electrolysed using inert electrodes.Predict the products of this electrolysis at
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!