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Anna11 [10]
3 years ago
9

why are the theoretical density values of brass, bronze, and steel reported as a range of densities? how can you categorize thes

e substances?
Chemistry
1 answer:
Julli [10]3 years ago
6 0

<u>Answer:</u>

<em>Theoretical density values  </em>

  • brass- 8.4-8.73 gm/cm^3
  • bronze- 8.73 g/cm^3
  • steel- 7.75 - 8.05 gm/cm^3

<u>Explanation:</u>

All of these substances are<em> </em>alloys (a substance made from melting two or more substances, one of them usually being a metal). Brass is a combination of copper and zinc, bronze is mostly copper, tin and other non-metals as well and steel is majorly made up of iron and copper. These alloys have various uses and varying importance in different kinds of industries.

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Shane performed the following trials in an experiment. Trial 1: Heat 30.0 grams of water at 0 °C to a final temperature of 40.0
Strike441 [17]

Answer:

A. The same amount of heat is absorbed in both the experiments because the product of mass, specific heat capacity, and change in temperature are equal for both.

Explanation:

  • The amount of heat absorbed by water (Q) can be calculated from the relation:

<em>Q = m.c.ΔT.</em>

where, Q is the amount of heat absorbed by water,

m is the mass of water,

c is the specific heat capacity of water (c = 4.186 J/g °C),

ΔT is the temperature difference (final T - initial T).

  • <u><em>For trial 1:</em></u>

m = 30.0 g, c = 4.18 J/g °C, ΔT = 40.0 °C – 0.0 °C = 40.0 °C

<em>∴ Q = m.c.ΔT</em> = (30.0 g)(4.18 J/g °C)(40.0 °C) = <em>5023 J.</em>

  • <u><em>For trial 2:</em></u>

m = 40.0 g, c = 4.18 J/g °C, ΔT = 40.0 °C – 10.0 °C = 30.0 °C

<em>∴ Q = m.c.ΔT</em> = (40.0 g)(4.18 J/g °C)(30.0 °C) = <em>5023 J.</em>

  • So, the right choice is:

<em>A. The same amount of heat is absorbed in both the experiments because the product of mass, specific heat capacity, and change in temperature are equal for both. </em>

4 0
3 years ago
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At which location is the temperature of the ocean floor bedrock most likely highest?
professor190 [17]
40 the map below shows a part of Earth’s surface. Points A through D are locations is on the ocean floor.
4 0
3 years ago
How many atoms are in nitrogen
ratelena [41]
Nitrogen is expressed with this formula:

N_{2} which means that every nitrogen molecules is composed of two atoms.


Hope it helped,

Happy homework/ study/ exam!
3 0
3 years ago
What is a conductor
Butoxors [25]
Hey there!

The answer would be A. When electrons. move easily through objects

In science, a conductor is a material that permits a flow of energy. A material that allows the flow of charged particles is an electrical conductor. A material that enables the transfer of thermal energy is a thermal conductor or heat conductor.

Hope this helps !
3 0
4 years ago
A student is working with four beakers that each contains a clear liquid. Which set of procedures would be best to use to determ
telo118 [61]

Answer:

Observe odor, determine pH, determine density, determine boiling point

Explanation:

The correct procedures that would be best to use to determine whether a beaker contains only distilled water would be to observe the odor of the liquid in the beaker, determine the pH of the liquid, determine the density, and then determine the boiling point of the liquid.

<em>Water is generally odorless and has a pH of approximately 7 with a density of 1 kg/m3 and a boiling point of 100 </em>^oC<em>. If the liquid in the beaker ticks all these conditions, then it can be established to be only distilled water.</em>

8 0
3 years ago
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