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
svetlana [45]
3 years ago
8

g a package of aluminum foil contains 50 ft2 of foil, which weighs approximately 8.0 oz. aluminum has a density of 2.70 g/cm3. w

hat is the approximate thickness of the foil in millimeters
Chemistry
1 answer:
VMariaS [17]3 years ago
8 0

Answer:

1.8×10^-2mm or 0.018mm

Explanation:

Density = mass/Volume

But volume= area×thickness

Area= 50ft2= 46451.52cm2

Mass=8oz= 226.7962g

Density= 2.70g/cm3

Thickness= mass/density ×area

= 226.7962/46451.52×2.70= 1.8×10-3cm= 1.8×10^-2mm

You might be interested in
What is the volume of a solid with a mass of 17.4 g and a density of 0.934 g /cm cubed?
Anvisha [2.4K]

Answer:

18.6 g/cm^3

Explanation:

17.4g/0.934g/cm^3

(divide)

5 0
2 years ago
Nitrogen (N) has an atomic number of 7 and an atomic mass of 14. Which of the following correctly shows the electron arrangement
bonufazy [111]

Answer:

2, 5

Explanation:

3 0
2 years ago
Read 2 more answers
Can someone help me?​
Brilliant_brown [7]

Answer:

no, and next time take it right

Explanation:

5 0
2 years ago
Select all that apply.
weeeeeb [17]

Salt dissolved in water is a solution, therefore

  1. salt is not chemically bonded to water
  2. the ratio of salt to water may vary
  3. salt and water retain their own chemical properties

<u>Explanation:</u>

Salt (sodium chloride) is formed from positive sodium ions bonded to negative chloride ions. Water can dissolve salt because the positive part of water particles attracts the negative chloride ions of salt. The water particle effects to be charged negatively near the atom of oxygen and positively near the atom of hydrogen.

Since contrasts attract, the water molecules tend to join collectively like magnets. Water is called the universal solvent since it can solve more substances than any other liquid. The salt and water retain their unique chemical properties.

3 0
3 years ago
A gas within a piston–cylinder assembly undergoes an isothermal process at 400 K during which the change in entropy is −0.3 kJ/K
Karolina [17]

Answer:

W = -120 KJ

Explanation:

Since the piston–cylinder assembly undergoes an isothermal process, then the temperature is constant.

Thus; T1 = T2 = 400K

change in entropy; ΔS = −0.3 kJ/K

Formula for change in entropy is written as;

ΔS = Q/T

Where Q is amount of heat transferred.

Thus;

Q = ΔS × T

Q = -0.3 × 400

Q = -120 KJ

From the first law of thermodynamics, we can find the workdone from;

Q = ΔU + W

Where;

ΔU is Change in the internal energy

W = Work done

Now, since it's an ideal gas model, the change in internal energy is expressed as;

ΔU = m•C_v•ΔT

Where;

m is mass

C_v is heat capacity at constant volume

ΔT is change in temperature

Now, since it's an isothermal process where temperature is constant, then;

ΔT = T2 - T1 = 0

Thus;

ΔU = m•C_v•ΔT = 0

ΔU = 0

From earlier;

Q = ΔU + W

Thus;

-120 = 0+ W

W = -120 KJ

8 0
3 years ago
Other questions:
  • A sound wave travels from air that is at 24°C into air that is 15°C. The sound wave will _____.
    15·1 answer
  • Before raw data can be used as scientific evidence, it must be analyzed and summarized. One way of summarizing data is to find t
    11·1 answer
  • A car at rest ends accelerates for 12 seconds. After this time the car is going 36 m/s. What was its acceleration?
    13·2 answers
  • What's another way to increase the solubility of a solid solute without increasing the temperature?
    7·1 answer
  • Calculate the molar mass of Ba(ClO4)2
    7·1 answer
  • What is the relationship between the classification of a reaction as endothermic or exothermic and the enthalpy of the reaction?
    15·1 answer
  • Pls help im very lost on this
    7·2 answers
  • Which type of plant is this?<br> Non-vascular<br> Moss<br> Perennial<br> Vascular
    12·2 answers
  • Determine the percentage of carbon and hydrogen in ethane C2H6 if the molecular weight is 30.
    14·1 answer
  • One sentence describing the difference between pure substances and mixtures.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!