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
zaharov [31]
3 years ago
15

Medical Assistant professional

Chemistry
1 answer:
marin [14]3 years ago
8 0

Answer:

what does your question mean

Explanation:

You might be interested in
A 0.2 M carboxylic acid (RCOOH) has a Ka = 1.66x10-6. What is the pH of this solution? Enter to 2 decimal places.
maria [59]

Answer:

3.24

Explanation:

The dissociation equation for the carboxylic acid can be represented as follows:

RCOOH —-> RCOO- + H+

We can use an ICE table to get the value of the concentration of the hydrogen ion. ICE stands for initial, change and equilibrium.

RCOOH RCOO- H+

Initial 0.2 0.0. 0.0

Change -x +x. +x

Equilibrium 0.2-x. x. x

We can now find the value of x as follows:

Ka = [RCOO-][H+]/[RCOOH]

(1.66* 10^-6) = (x * x)/(0.2-x)

(1.66 * 10^-6) (0.2-x) = x^2

x^2 = (3.32* 10^-7) - (1.66*10^-6)x

x^2 + (1.66 * 10^-6)x - (3.32* 10^-7) = 0

Solving the quadratic equation to get x:

x = 0.0005753650094369094 or - 0.0005753650094369094

As concentration cannot be negative, we discard the negative answer

Hence [H+] = 0.0005753650094369094

By definition, pH = -log[H+]

pH = -log(0.0005753650094369094)

pH = 3.24

8 0
3 years ago
If 60.0 ml of a 1.5 m hcl solution is put into a flask and diluted with water to make 2.0 l of solution
77julia77 [94]

Answer:

The molarity of the diluted HCl solution: <u>M₂ = 0.045 M</u>  

Explanation:

To find- the molarity of the diluted HCl solution (M₂)

Given- <u>For original HCl solution</u>-

Molarity: M₁ = 1.5 M, Volume: V₁ = 60.0 ml = 0.06 L          (∵ 1L = 1000 mL)

Then this original solution is diluted to a volume of 2 L

Thus <u>for the diluted HCl solution</u>-  

The Volume of the diluted HCl solution: V₂ = 2 L

<u>So the Molarity of the diluted HCl solution (M₂) can be calculated by the </u><u><em>dilution equation:</em></u>

M_{1}\times V_{1} = M_{2}\times V_{2}

\Rightarrow M_{2} = \frac{M_{1}\times V_{1}}{V_{2}}

\Rightarrow M_{2} = \frac{1.5 M\times 0.06 L}{2 L} = 0.045 M

<u>Therefore, the molarity of the diluted HCl solution: M₂ = 0.045 M</u>

7 0
3 years ago
PLZ HELP?! 50 points <br><br> Write the correct IUPAC name for the following compound
slamgirl [31]

Answer:

2-ethly-3-5 dimethylheptam

Explanation:

trust meeeeee

3 0
2 years ago
What is the volume in liters of 2.00 moles of hydrogen at STP
lora16 [44]
Take the given 2.00 moles of hydrogen then divide it by 1 mole of hydrogen. Second you want to multiply the answer by 22.4L. Giving you an answer of 44.8L of hydrogen
4 0
3 years ago
An experiment can have more than one independent variable.<br><br><br> True <br> False
Brilliant_brown [7]
It is possible to have experiments in which you have multiple variables.
5 0
3 years ago
Read 2 more answers
Other questions:
  • The heat of vaporization of 1-pentanol is 55.5 kj/mol, and its entropy of vaporization is 148 j/k.mol. what is the approximate b
    15·1 answer
  • C2d3 has a solubility product constant of 9.14×10−9. What is the molar solubility of c2d3?
    10·1 answer
  • Which chemical reaction would result in the greatest release of energy?
    8·2 answers
  • Identify the number of moles in 369 grams of calcium hydroxide. Use the periodic table and the polyatomic ion resource.
    6·1 answer
  • Hydrogen and oxygen atoms react to form water by __________ electrons.
    14·1 answer
  • What is the answer for #11
    5·1 answer
  • Answers to all of these
    12·1 answer
  • The force that one surface exerts on another when the two rub against each other is called _
    15·1 answer
  • Carbon can be used to displace some metals from their ores. Explain the process by which iron is displaced from its ore by carbo
    10·1 answer
  • To power itself, the sun is constantly generating a nuclear reaction in its core, in which hydrogen nuclei are combined to form
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!