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
Dennis_Churaev [7]
3 years ago
10

How many gallons of 80% antifreeze solution must be mixed with 60 gallons of 20% antifreeze to get a mixture that is 70% antifre

eze? Use the six-step method.
...?
Chemistry
2 answers:
Sveta_85 [38]3 years ago
7 0
<span>7X+.25*100=.6(100+X)
.7X+25=60+.6X
.7X-.6X=60-25
.1X=35
X=35/.1

X=350 GALLONS OF 70% ANTIFREEZE WILL BE NEEDED.
PROOF
.7*350+25=.6*450
245+25=270
270=270</span>
Anarel [89]3 years ago
6 0
Let A be the 80% solution and B be the 20% solution and P be the produce solution of 70%. Va and Vb and Vp are the volumes of A and B and P respectively.
Va + 60 = Vp
0.7Vp = 0.8Va + 0.2(60)
Substituting the value of Vp from the first equation:
0.7(Va + 60) = 0.8Va + 12
30 = 0.1Va
Va = 300 gallons
You might be interested in
An unknown substance has mass of 20 grams and volume of 2 cm3. What is the density of the substance
romanna [79]
Density is the ratio of mass of as substance per unit volume of the same substance.
mass (20g)
volume (2cm3)
20g divide by 2cm3
therefore density is 10gcm-3
8 0
3 years ago
Why would a student use rate laws in this investigation
Pani-rosa [81]
If you use rate laws then your answer will be more supported. Laws can not change, so if you use rate laws then the student will get a more accurate answer then if they don’t use rate laws.
8 0
3 years ago
Which group of elements ,in the periodic table, would most likely be used for electrical wires?
grin007 [14]
<span>Most electrical wiring uses copper</span>
5 0
3 years ago
Kc= [3.1*10^-2]^2. (mol/L^2) divide by [8.5*10^-1] [3.1*10^-3]^3 (mol/L)^4​
jok3333 [9.3K]

Answer:

Kc = 12.58

Explanation:

Kc = [0.229]^2*[0.687]^6/[0.221]^4*[0.5685]^3

Kc = (0.052441)(0.10513)/(0.002385)(0.18373)

Kc = 0.0005513/0.000438

Kc = 12.58

Hope that helps!!

5 0
3 years ago
Find the number of cations present in 7g of sodium prosphate Na=23 g/mol O=16g/mol P=31g/mol​
Snowcat [4.5K]

Answer:    This contains magnesium, Mg2+, and hydroxide, OH–

, ions. Each magnesium ion is +2 and

each hydroxide ion is -1: two -1 ions are needed for one +2 ion, and the formula for magnesium

hydroxide is Mg(OH)2. The (OH)2 indicates there are two OH–

ions. In a formula unit of

Mg(OH)2, there are one magnesium ion and two hydroxide ions; or one magnesium, two

oxygen, and two hydrogen atoms. The subscript multiplies everything in ( )

hope that helped!!

3 0
3 years ago
Other questions:
  • PLEASE HELP!CHEMISTRY QUESTION
    10·1 answer
  • 4.5 × 1025 atoms of nickel equal how many moles? A. 27 mol B. 2.7 × 1048 mol C. 0.75 mol D. 75 mol
    11·2 answers
  • What is the Lewis Structure for silane?
    9·2 answers
  • Which type of orbitals overlap to form the sigma bond between c and cl in ch3cl?
    8·1 answer
  • One parent is 6 feet tall and the other parent is 6 feet 4 inches tall.
    13·2 answers
  • which part of earths interior is inferred to have convection currents that causes tectonic plates to move
    14·1 answer
  • SO2Cl2 decomposes in a first-order process with a half-life of 4.88 × 103 s. If the original concentration of SO2Cl2 is 0.011 M,
    15·1 answer
  • Name the ionic compound NH4NO3
    9·1 answer
  • These graphs compare the people who oppose the use of nuclear energy to the people
    5·1 answer
  • Describe at least four properties of electrons that
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!