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
Radda [10]
3 years ago
14

A student has two solutions of a substance;Solution-1:25M , 400ml and Solution-2:30M , 300M. What is the molarity of the final s

olutions if these two solutions are mixed?
​
Chemistry
1 answer:
Vlad [161]3 years ago
3 0

Answer:

The molarity of the final solution  is 1.7 M

Explanation:

The parameters given are;

First solution = 400 ml of 1.25 M

Second solution = 300 ml of 2.30 M

Therefore, we have;

First solution contains 400/1000 * 1.25 moles = 0.5 moles of the substance

Second solution contains 300/1000 * 2.30 moles = 0.69 moles of the

Hence the sum of the two solutions contains 0.5 + 0.69 = 1.19 moles of the substance

The volume of the sum of the two solutions = 400 ml + 300 ml = 700 ml

Hence we have the concentration of the final solution presented as follows;

700 ml contains 1.19 moles of the substance

Therefore;

1000 ml will contain 1000/700 * 1.19 = 1.7 moles

The molarity of the final solution = The number of moles per 1000 ml = 1.7 M.

You might be interested in
How many atoms does 2NaOH have
saul85 [17]
The substance of 2 Naoh contains 6 atoms
8 0
3 years ago
Read 2 more answers
Read the sentence from the introduction [paragraphs 1-3].
ss7ja [257]

Answer: the answer is B

Explanation:

6 0
3 years ago
What is the pH difference of two samples if the concentration of [H+] ions is 1000-fold less in the second sample?
snow_tiger [21]
The correct answer is a. This is because the pH of a solution is defined as -log10(concentration of H+ ions). An inverse logarithmic scale such as this means that a solution with a lower concentration of H+ ions will have a higher pH than one with a higher concentration. Therefore we know that the pH of the second sample will be higher than the first.

Since the logarithmic scale has the base 10, a change by 1 on the scale is a consequence of multiplication/division of the H+ concentration by a factor of 10. As the scale is inverse, this means that a decrease of concentration by factor 1000 is equivalent to increasing the pH by (1000/10) = 3.
4 0
3 years ago
Read 2 more answers
I’ll $ashapp anyone who knows the answers to these!!! Leave your $tag
kvv77 [185]

Answer:

below

Explanation:

1. The areas that have latitudes which are closer to the equator are generally hotter than those areas that are closer to the north and south poles.

2. Temperature is inversely related to latitude, as latitude increases from the equator (moving north or south) the temperature decreases.

Hope this helps! best of luck <3

3 0
2 years ago
3. How many moles are 1.707 x 10^24 atoms of carbon?
Paraphin [41]

Answer:

2.835 moles of carbon

Explanation:

By definition, there are 6.022x10^23 atoms (or compounds) in one mole.

Write and use this as a conversion factor:

(6.022x10^23 atoms)/mole

(1.707 x 10^24 atoms of carbon)/((6.022x10^23 atoms)/mole) = 2.835 moles carbon

8 0
2 years ago
Other questions:
  • A homeogeneous mixture or solution consist of
    9·2 answers
  • Why does a pan of warm water eventually become the same temperature as the room it is in
    14·1 answer
  • The interactive forces between particles are... A) less effective in solids than in liquids B) more effective in solids than in
    9·1 answer
  • An analogy makes a comparison between objects based on their similar qualities. Cassidy wanted to create an analogy for the moti
    14·2 answers
  • Given the reaction below, how will the concentration of D change if the concentration of B decreases by 0.045 M? 3A(g)+2B(g)⇋2C(
    15·1 answer
  • Choose one or more:
    13·1 answer
  • What is a contributor of global warming?
    15·2 answers
  • Muiltplying 2.5 x 10^10 by 3.5 x 10^-7
    6·1 answer
  • Why do solids not diffuse​
    5·2 answers
  • Calculate AHræn for the following reaction
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!