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
Marat540 [252]
3 years ago
12

You need a 35% alcohol solution. On hand, you have a 280 mL of a 30% alcohol mixture. You also have 75% alcohol mixture. How muc

h of the 75% mixture will you need to add to obtain the desired solution
Chemistry
1 answer:
Marina CMI [18]3 years ago
4 0

Answer:

35 mL

Explanation:

Let the amount of 75% mixture needed be A.

The amount of each solution with their respective concentration to be added together can be expressed as:

0.75A + 0.3(280)...............eqn 1

The addition of the two solution must merge with the expected concentration and this can be expressed as:

0.35(A + 280).............eqn 2

Eqn 1 must be equal to eqn 2, hence:

0.75A + 0.3(280) = 0.35(A + 280)

Solve for A.

0.75A + 84 = 0.35A + 98

0.40A = 14

A = 35

Hence, 35 mL of the 75% mixture will be needed.

You might be interested in
What type of chemical reaction is the following? BaCl2(aq) + Na2SO4(aq)
Basile [38]

Answer:

it's a precipitation reaction.

Explanation:

since a solid is produced, one of the elements are insoluble with one another–making a precipitate.

4 0
2 years ago
What is keq for the reaction 2so2(g) + o2(g) 2so3(g)? apex?
Dennis_Churaev [7]
The  keg for the reaction
2  SO2(g) + O2(g)   →  2  SO3(g)  is

 Keg =  [SO3]^2/ {(SO2)^2 ( O2)}

Keg (equilibrium constant)  is the ratio of  of equilibrium  concentration  of the product   raised  to the power  of their  stoichiometric  coefficient  to the  equilibrium  concentration  of the reactant  raised  to the power  of  their stoichiometric  coefficient.

7 0
3 years ago
Read 2 more answers
What contains elements with similar properties in the periodic table?
Nataly [62]
A) a column

example: earth alkaline metals
6 0
3 years ago
Read 2 more answers
Select the keyword or phrase that will best complete each sentence.
pishuonlain [190]

Answer:

1) acetylide

2) enol

3) aldehydes

4) tautomers

5) alkynes

6) Hydroboration

7) Keto

8) methyl ketones

Explanation:

Acetylide anions (R-C≡C^-) is a strong nucleophile. Being a strong nucleophile, we can use it to open up an epoxide ring by SN2 mechanism. The attack of the acetylide ion occurs from the backside of the epoxide ring. It must attack at the less substituted side of the epoxide.

Oxomercuration of alkynes and hydroboration of alkynes are similar reactions in that they both yield carbonyl compounds that often exhibit keto-enol tautomerism.

The equilibrium position may lie towards the Keto form of the compound. Usually, if terminal alkynes are used, the product of the reaction is a methyl ketone.

3 0
3 years ago
FREE PONITS <br>COME GET YOUR PONITS!!!! <br>:)
trasher [3.6K]

Explanation:

Need points thanks.

7 0
2 years ago
Read 2 more answers
Other questions:
  • Which of the following solids is the best insulator?
    6·2 answers
  • What is the empirical formula of a compound with 35.94% aluminum and 64.06% sulfur
    7·1 answer
  • Calculate the solubility of argon in water at an atmospheric pressure of 0.370 atm (a typical value at high altitude).
    12·1 answer
  • 4.000 g of Compound X with molecular formula C4H6 are burned in a constant-pressure calorimeter containing 40.00 kg of water at
    6·1 answer
  • Units used to measure the rate of electron flow
    6·1 answer
  • Chemical Reaction Type of reaction
    12·1 answer
  • What occurs if two objects at different temperatures are in contact?
    12·1 answer
  • A compound contains oxygen and chlorine. Its molecular mass is 166.9g. What is the molecular formula if its empirical formula is
    7·1 answer
  • 5 points
    14·1 answer
  • For the reaction H2O) =H% + OH", if x moles of H and y moles of OH are formed K. is y A. *?/(1 – x) C. 1/xy D. xy ​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!