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
Lapatulllka [165]
2 years ago
6

Pls help lollollolljdjdjdjdjjdjjzjzjsjsjsis

Chemistry
1 answer:
HACTEHA [7]2 years ago
3 0

Answer:

djhdhdjdududddhhrhed

You might be interested in
Calculate the pH during the titration of 30.00 mL of 0.1000 M HCOOH(aq) with 0.1000 M NaOH(aq) after 29.3 mL of the base have be
pashok25 [27]

Answer:

3.336.

Explanation:

<em>Herein, the no. of millimoles of the acid (HCOOH) is more than that of the base (NaOH).</em>

<em />

So, <em>concentration of excess acid = [(NV)acid - (NV)base]/V total</em> = [(30.0 mL)(0.1 M) - (29.3 mL)(0.1 M)]/(59.3 mL) = <em>1.18 x 10⁻³ M.</em>

<em></em>

<em> For weak acids; [H⁺] = √Ka.C</em> = √(1.8 x 10⁻⁴)(1.18 x 10⁻³ M) = <em>4.61 x 10⁻⁴ M.</em>

∵ pH = - log[H⁺].

<em>∴ pH = - log(4.61 x 10⁻⁴) = 3.336.</em>

7 0
3 years ago
A solution of h2so4(aq) with a molal concentration of 2.24 m has a density of 1.135 g/ml. what is the molar concentration of thi
OLga [1]
This problem is simply converting the concentration from molality to molarity. Molality has units of mol solute/kg solvent, while molarity has units of mol solute/L solution.

2.24 mol H2SO4/kg H2O * (0.25806 kg H2SO4/mol H2SO4) = 0.578 kg H2SO4/kg H2O

That means the solution weighs a total of 1 kg + 0.578 kg = 1.578 kg. Then, convert it to liters using the density data:

1.578 kg * (1000g / 1kg) * (1 mL/1.135 g) = 1390 mL or 1.39 L.

Hence, the molarity is

2.24/1.39 = 1.61 M
7 0
2 years ago
When 0.491 grams of a protein were dissolved in 44 mL of benzene at 24.4 degrees C, the osmotic pressure was found to be 50.9 to
Ira Lisetskai [31]

Answer:

4057.85 g/mol

Explanation:

Hello, the numerical procedure is shown in the attached file.

- In this case, since we don't have the density of the protein, we must assume that the volume of the solution is solely given by the benzene's volume, in order to obtain the moles of the solute (protein).

-Van't Hoff factor is assumed to be one.

Best regards.

4 0
2 years ago
Which of the following could be a long-term health effect of chemical pesticide use?
Helen [10]
The correct Answer for this question is D
3 0
3 years ago
Which is the electron configuration for zinc?
alisha [4.7K]

[AR] 3d10 4s2 is the configuration for zinc

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following is true for the equilibrium constant of a reaction? It is a ratio of the concentrations in a reaction. It
    15·1 answer
  • What element has three electrons in its 5d sublevel? nd nb ta u
    10·2 answers
  • If a gas occupies 733 mL at 10.0 °C, at what temperature will it occupy 950 mL, assuming the pressure of the gas remains constan
    7·1 answer
  • The water cycle is also known as the _______ cycle?
    12·2 answers
  • I don’t get this at all i’ll show the rest if anyone gets this
    9·1 answer
  • Monosodium glutamate (MSG), a flavor enhancer, has been blamed for "Chinese restaurant syndrome," the symptoms of which are head
    11·1 answer
  • Deep, cold water is the __________. Warm, shallow water is the ___________.
    14·2 answers
  • How many moles in 200 grams of Br
    11·1 answer
  • Phosphorous +Dilute hydrochloric acid
    10·1 answer
  • How many molecules are in 3 moles of NaCl?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!