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
Nimfa-mama [501]
3 years ago
13

A metallurgist has one alloy containing 21% aluminum and another containing 42% aluminum. how many pounds of each alloy must he

use to make 41 pounds of a third alloy containing 38% aluminum?
Chemistry
1 answer:
Naily [24]3 years ago
8 0
Answer is: 7.8 lb of 21% aluminum and 33.2 ib of <span>42% aluminum.</span>

ω₁<span> = 21% ÷ 100% = 0.21.
ω</span>₂<span> = 42% ÷ 100% = 0.42.
ω</span>₃<span> = 38% ÷ 100% = 0.38.
</span>m₁ = ?.

m₂<span> = ?.
</span>m₃ = m₁ + m₂<span>.
</span>m₃ = 41 pounds.

m₁ = 41 lb - m₂<span>.
ω</span>₁ · m₁ + ω₂ ·m₂ = ω₃ · m₃.

0.21 · (41 lb - m₂) + 0.42 · m₂ = 0.38 · 41 lb.

8.61 lb - 0.21m₂ + 0.42m₂ = 15.58 lb.

0.21m₂ = 6.97 lb.

m₂ = 6.97 lb ÷ 0.21.

m₂ = 33.2 lb.

m₁ = 41 lb - 33.2 lb.

m₁<span> = 7.8 lb.</span>



You might be interested in
Given the reaction: 3() + () → 3() + 2()
Scilla [17]

Answer:

i think d is the answer for this

3 0
2 years ago
Please Answer ASAP
adelina 88 [10]

The answer to this question would be S2o6 which is C.


3 0
3 years ago
Read 2 more answers
Select the correct answer.
amid [387]

Answer:

D. Na+

Explanation:

Na+ is the only ion here that is not related to pH. Adding OH- increases pH, and adding H3O+ or H+ (the two are interchangeable) decreases pH.

8 0
3 years ago
Where does most<br> pollution come from?
SOVA2 [1]

Answer: Most ocean pollution begins on land

When large tracts of land are plowed, the exposed soil can erode during rainstorms. Much of this runoff flows to the sea, carrying with it agricultural fertilizers and pesticides. Eighty percent of pollution to the marine environment comes from the land.

Explanation:

Hope this helped. Goodluck! xD

7 0
3 years ago
Read 2 more answers
You are cooking a recipe and it calls for 1/4 a cup of milk. You get your measuring cup out, pour the milk into the
Igoryamba

Answer:

No

Explanation:

The volume of the milk in the measuring cup does not change when it is transferred to the mixing bowl.

Volume is the amount of space a body or substance occupies.

It is determined by the amount of matter that is present within a given measurement.

Since the amount of milk was accurately measured out, the volume is maintained when it is transferred to the mixing bowl. The reason why a measuring cup is used is to keep the consistency of the measurement.

7 0
2 years ago
Other questions:
  • Calculate the amount of energy required to melt 500 g of ice at 0oc. (δhfus=5.96 kj/mole; δhfus is the energy required to melt i
    9·1 answer
  • What is a conversion factor?
    8·2 answers
  • 1/ Which graph illustrates constant speed and velocity
    10·1 answer
  • What is the name of Mn(CO3)2
    13·1 answer
  • Name the following compound: 2-ethyl-4-methylheptene 3,5-dimethyl-2-octene 2-ethyl-4-methylheptane 3-methyl-5-propyl-2-hexene
    9·1 answer
  • State whether the pH at the equivalence point in each of the following titrations is expected to be less than 7, equal to 7, or
    6·1 answer
  • 6. As you go down a family or group on the periodic table *
    14·1 answer
  • 67.4 L of sulfur dioxide (SO2) gas at 0.0C and at 1 atm of pressure is equivalent aren’t to how many moles?
    7·1 answer
  • What do the superscripts and subscripts in the notation ^40 K represent?
    15·1 answer
  • A student described two properties of a substance as shown.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!