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
ratelena [41]
3 years ago
12

What is the concentration of a solution prepared by placing 20. mL of 0.12 M K2S in a graduated cylinder and pouring water until

you reach the 100.0 mL mark (the final volume after mixing the solution with water is 100.0 mL).
Chemistry
1 answer:
MAVERICK [17]3 years ago
3 0

Answer: 0.024 M

Explanation:

According to the neutralization law,

M_1V_1=M_2V_2

where,

M_1 = molarity of stock solution = 0.12 M

V_1 = volume of stock solution = 20.0 ml

M_2 = molarity of diluted solution = ? M

V_2 = volume of diluted solution = 100.0 ml

Putting in the values we get:

0.12M\times 20.0=M_2\times 100.0

M_2=0.024

Therefore, the concentration of the resulting solution is 0.024 M.

You might be interested in
What is the percent by mass of potassium in K3Fe(CN)6?
yawa3891 [41]
The percent by mass of potassium in K3Fe(CN)6 is 35.62%.
3 0
3 years ago
Read 2 more answers
1. How is the chemical symbol of an element determined?
mr_godi [17]
The number of protons defines what element it is and also determines the chemical behavior of the element.
4 0
3 years ago
What causes the subduction zone when an oceanic plate collides with a continental plate
Ad libitum [116K]
Oceanic<span> crust tends to be denser and thinner than </span>continental<span> crust, so the denser</span>oceanic<span> crust gets bent and pulled under, or </span>subducted<span>, beneath the lighter and thicker </span>continental<span> crust. </span>
7 0
3 years ago
Using the information from STP or SATP conditions determine the value of the ideal gas constant.
Dovator [93]

Answer:

0.0821 atm.L/Kmol

Explanation:

At stp, the values temperature, pressure and volume is given below:

Pressure (P) = 1 atm

Temperature (T) = 273 K

Volume (V) = 22.4 L

At stp, 1 mole of a gas occupy 22.4L.

Number of mole (n) = 1 mole

Gas constant (R) =?

The ideal gas equation is given below:

PV = nRT.

With the above equation, the gas constant R can be obtained as follow:

1 atm x 22.4L = 1 mole x R x 273K

Divide both side by (1 mole x 273 K)

R = (1 atm x 22.4L) / (1 mole x 273 K)

R = 0.0821 atm.L/Kmol

Therefore, the gas constant is 0.0821 atm.L/Kmol

4 0
3 years ago
(Thermodynamics)
Setler79 [48]

Answer:

456 kJ

Step-by-step explanation:

CH₄ + 2Cl₂ ⟶ CCl₄ + 2H₂ ; ΔH =  45.6 kJ

Treat the heat as if it were a product in the equation. Then use the molar ratio (45.6 kJ/2 mol Cl₂) in the usual way.

Amount of energy = 20 mol Cl₂ × (45.6 kJ/2 mol Cl₂)  = 456 kJ

You must add 456 kJ to react 20 mol of chlorine with excess methane.

5 0
3 years ago
Other questions:
  • What can we use to determine the relative age of two rocks
    11·1 answer
  • An isotope of cesium has 55 protons and 78 neutrons. What is the mass number of this isotope?
    7·1 answer
  • If you had a beaker full of black powder which of the following could you have?
    7·2 answers
  • Atoms of hydrogen can become helium atoms during a chemical reaction.<br> True<br> False
    6·2 answers
  • Which compounds has more nonbonding electrons? a. butene b. ethane?
    5·1 answer
  • What term expresses the ratio of moles of reactants and products according to the coefficients in the balanced chemical equation
    14·1 answer
  • What are the 3 reactants necessary for photosynthesis
    12·2 answers
  • How many grams of the excess reagent are left over if 37.8g of Cl2 react with 39.4 g of NaF?
    6·1 answer
  • 10. A(n) eclipse occurs at a full moon when Earth is directly between the moon and the sun.​
    9·1 answer
  • How many valence electrons does this atom have? (Urgent)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!