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
KIM [24]
2 years ago
10

What is the new concentration of a solution after 250mL of 2.5M sulfuric acid is diluted to a final volume of 700mL?

Chemistry
1 answer:
o-na [289]2 years ago
6 0

Answer:

The new concentration of the solution is 0.89 M.

Explanation:

In chemistry, dilution is the reduction in concentration of a chemical in a solution. This is accomplished by adding more solvent to the same amount of solute.

So, in a dilution, the amount of solute does not vary, but the volume of the solvent varies: as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.

In a dilution the expression is used:

Ci*Vi = Cf*Vf

where:

  • Ci: initial concentration
  • Vi: initial volume
  • Cf: final concentration
  • Vf: final volume

In this case:

  • Ci= 2.5 M
  • Vi= 250 mL
  • Cf=?
  • Vf= 700 mL

Replacing:

2.5 M* 250 mL= Cf* 700 mL

Solving:

Cf=\frac{2.5 M*250 mL}{700 mL}

Cf= 0.89 M

<u><em>The new concentration of the solution is 0.89 M.</em></u>

You might be interested in
I NEED HELP PLZ HELP
topjm [15]

Answer:

A

Explanation:

6 0
2 years ago
Sandy was cooking beans for dinner and heard they cook faster if baking soda is added to the water. is adding baking soda a good
Strike441 [17]
No she should add salt to the water
3 0
3 years ago
Mercury chloride is a commercial fungicide. If the molar mass is 470 g/mol and the percent composition is 85.0% Hg and 15.0% Cl,
ElenaW [278]
Data: molar mass 470 g/mol

Percent composition:

Hg = 85.0%
Cl = 15.0%

Solution:

1)  Convert % to molar ratios

A. Base: 100 g

=> Hg = 85.0 g / 200.59 g/mol = 0.4235 mol

     Cl = 15.0 g / 35.45 g/mol = 0.4231 mol

B. divide by the higher number and round to whole number

Hg = 0.4325 / 0.4231 = 1.00

Cl = 0.4231 / 0.4231 = 1.00

=> Empirical formula = Hg Cl

2) Find the mass of the empirical formula:

HgCl: 200.59 g/mol + 35.45 g/mol = 236.04

3) Determine how many times is the empirical mass contained in the molecular mass:

470 g/mol / 236.04 = 1.99 ≈ 2

=> Molecular formula = Hg2 Cl2.

Answers:

Empirical formula HgCl
Molecular Formula Hg2Cl2
6 0
3 years ago
What is the concentration of a solution with a volume of 660L that contains 33.4g of AlCO3?
lana [24]

Answer:

The concentration of the solution is 5.8168 × 10^{-4} mol.dm^{-3}

Explanation:

Here, we want to calculate the concentration of the solution.

The unit of this is mol/dm^3

So the first thing to do here is to calculate the number of moles of the solute present, which is the number of moles of AlCO3

The number of moles = mass/molar mass

molar mass of AlCO3 = 27 + 12 + 3(16)  = 27 + 12 + 48 = 87g/mol

Number of moles = 33.4/87 = 0.384 moles

This 0.384 moles is present in 660 L

x moles will be present in 1 dm^3

Recall 1 dm^3 = 1L

x * 660 = 0.384 * 1

x = 0.384/660 = 0.00058168 = 5.8168 * 10^-4 mol/dm^3

7 0
2 years ago
Calculate the tempature of a 0.50 mol sample of a gas at a pressure of 0.987 atm and a volume of 12 L
dalvyx [7]

Answer:

The temperature is 288, 88K

Explanation:

We use the formula PV= nRT:

T= PV/nR

T= 0,987 atm x12 L/0,50 mol x 0,082 l atm/K mol

<em>T=288,88K</em>

6 0
3 years ago
Other questions:
  • The electron configuration of an element is 1s22s22p4. Describe what most likely happens when two atoms of this element move tow
    15·2 answers
  • Helpmeh on this question
    12·2 answers
  • A student is asked to convert measurements from grams to kilograms and from kilograms to grams. His answers are shown in bold in
    10·1 answer
  • The nitrogen and hydrogen atoms that make up ammonia are held together by a
    12·1 answer
  • Observation on which fruit has more acidity: lemons, watermelon and oranges
    7·1 answer
  • Consider the reaction: CH4 + 2O2 = CO2 + 2H2O
    11·1 answer
  • What would be a simple way to block erosion
    11·1 answer
  • Number of SO2 molecules in 1.28 mol of SO2
    12·1 answer
  • A website promoting the use of alternative energy vehicles and hybrid technologies claims that "A typical automobile in the USA
    13·1 answer
  • Which reaction follows the laws of conservation of matter
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!