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7nadin3 [17]
3 years ago
9

Other than lowering the cost of producing coins, what could be another added benefit of changing the metals used to make coins?(

hint: think of the density...why would a metal that is less dense be beneficial?)
Chemistry
1 answer:
sergejj [24]3 years ago
5 0

Answer:

See explanation

Explanation:

A coin is money made from metal stuff. Common coinage metals are copper, silver, nickel etc.

One consideration in coin production is the density of the coin. A coin of less density will have lesser mass and occupy a lesser volume. This makes it easier to carry the coin around.

Coins should therefore be made of low density metals so that they can easily be carried about.

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A flask containing helium gas is connected to an open-ended mercury manometer. The open end is exposed to the atmosphere, where
stepladder [879]

Answer:

726 torr

Explanation:

Generally, atmospheric pressure can be measured using a manometer which is in form of a U-shaped tube. In addition, 1 mm Hg is equivalent to 1 torr. Therefore, 752 torr is equivalent to 752 mm Hg. Therefore, the total pressure will be equivalent to the atmospheric pressure (mm Hg) + the mercury height.

In this case, the mercury height = -26 mm

Thus:

The helium pressure = 752 - 26 = 726 mm Hg

This is also equivalent to 726 torr

8 0
3 years ago
What was the major weakness of Wegener's theory of continental drift
Alik [6]

Alfred Wegener proposed the continental drift theory  in four reasons. One, he hypothesized that the continents were once a giant continent. Two, he observed that there are fossils found of the same kind in the different locations. Three, he found that the edge of opposing continents somehow fits if they are combined, almost like a puzzle. And four, there are glacial scars that are left behind by a larger glacial continent. His greatest weakness of Alfred Wegeners’ continental drift theory was he could not explain what kind of force that caused this continents to move far from each other.

6 0
3 years ago
On average an adults lung volume is 5 L convert to mL
RideAnS [48]
  • 1L=1000mL

\\ \sf\longmapsto 5L

\\ \sf\longmapsto 5(1000)

\\ \sf\longmapsto 5000mL

4 0
3 years ago
What volume of O2 is required to react with CS2 to produce 4 liters of CO2?
Alenkasestr [34]

Answer:

12 L of O₂

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

CS₂ + 3O₂ —> CO₂ + 2SO₂

From the balanced equation above,

3 L of O₂ reacted to produce 1 L of CO₂.

Finally, we shall determine the volume of O₂ required to produce 4 L of CO₂. This can be obtained as follow:

From the balanced equation above,

3 L of O₂ reacted to produce 1 L of CO₂.

Therefore, xL of O₂ will react to produce 4 L of CO₂ i.e

xL of O₂ = 3 × 4

xL of O₂ = 12 L

Thus, 12 L of O₂ is needed for the reaction.

3 0
3 years ago
In which of the following sets do all species have the same number of protons?
Ipatiy [6.2K]

Among the given options, Option (D) that is O, O^2^-,O^2^+  will have the same number of protons. Hence option (D) is correct.

<h3>What are protons ?</h3>

A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron.

In option (D), All the three species (O, O^2^-,O^2^+ ) bears 8 protons but the number of electrons varies.

In any Ion, there will be no change in number of protons among the same atoms but number of electrons varies.

Therefore, Option (D)  has same atoms but different ions.

Hence, it has same number of protons. Thus the correct answer is option (D)

Learn more about Protons here ;

brainly.com/question/12535409

#SPJ1

5 0
2 years ago
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