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
zhenek [66]
3 years ago
15

Calculate the atmospheric pressure if the boiling point of water is 81 degrees Celsius.

Chemistry
1 answer:
Korolek [52]3 years ago
6 0
 if the boiling point is 81 then the atmospheric pressure is 365 mmHg
You might be interested in
Which of the following chemicals effects blood pressure for both the short and long term?
andriy [413]
The chemical that effects blood pressure for both the short and long term is Angiotensin II

8 0
3 years ago
Why does the hull of an ocean -going ship rust quickly?
stepan [7]
Metal rusts when it oxidized around moisture.
4 0
3 years ago
3 kelebihan watak utama dalam novel meniti impian​
In-s [12.5K]
I honestly don’t know sorry
7 0
3 years ago
A buffer solution is made that is 0.347 M in H2C2O4 and 0.347 M KHC2O4.
irga5000 [103]

Answer:

1. pH = 1.23.

2. H_2C_2O_4(aq) +OH^-(aq)\rightarrow HC_2O_4^-(aq)+H_2O(l)

Explanation:

Hello!

1. In this case, for the ionization of H2C2O4, we can write:

H_2C_2O_4\rightleftharpoons HC_2O_4^-+H^+

It means, that if it is forming a buffer solution with its conjugate base in the form of KHC2O4, we can compute the pH based on the Henderson-Hasselbach equation:

pH=pKa+log(\frac{[base]}{[acid]} )

Whereas the pKa is:

pKa=-log(Ka)=-log(5.90x10^{-2})=1.23

The concentration of the base is 0.347 M and the concentration of the acid is 0.347 M as well, as seen on the statement; thus, the pH is:

pH=1.23+log(\frac{0.347M}{0.347M} )\\\\pH=1.23+0\\\\pH=1.23

2. Now, since the addition of KOH directly consumes 0.070 moles of acid, we can compute the remaining moles as follows:

n_{acid}=0.347mol/L*1.00L=0.347mol\\\\n_{acid}^{remaining}=0.347mol-0.070mol=0.277mol

It means that the acid remains in excess yet more base is yielded due to the effect of the OH ions provided by the KOH; therefore, the undergone chemical reaction is:

H_2C_2O_4(aq) +OH^-(aq)\rightarrow HC_2O_4^-(aq)+H_2O(l)

Which is also shown in net ionic notation.

Best regards!

4 0
3 years ago
What volume would 0.853 moles of Nitrogen gas occupy at STP?
beks73 [17]

Answer:

19.12 L

Explanation:

At STP(i.e. Standard temperature and pressure).

The volume occupied by one mole of gas = 22.4 L

The pressure = 1 atm

The temperature = 273 K

Thus, since 1 mole of gas = 22.4 L;

Then 0.853 moles of N2 gas will occupy:

= (0.853 moles of N2 gas × 22.4 L)/ 1 mole of N2 gas

= 19.12 L

6 0
3 years ago
Other questions:
  • How many neutrons are in Cesium-130 (130/50 Cs)
    6·1 answer
  • If an atom has 17 protons and 18 neutrons, what is the charge of the atom's nucleus?​
    15·1 answer
  • The volume of a sample of gas measured at 27 °C is 10.0 dm . What is the temperature when the volume is reduced to 9.0 dm at the
    11·1 answer
  • This version of Einstein's equation can be used directly to find what value? `Δm = E/c^2
    10·2 answers
  • A scientific theory is _____.What have chemists done to help people conserve energy?
    7·1 answer
  • What is the mass number of chlorine?
    10·1 answer
  • Atoms are:
    14·1 answer
  • Which is the best reason for choosing the beaker for heating the solution?
    10·1 answer
  • Complete this example: A 0.67 molal solution was
    5·1 answer
  • A sample of oxygen, o2, occupies a volume of 0. 65 l at 11°c under 0. 50 atm of pressure. (r = 0. 08205 latm/molk). how many mol
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!