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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 9-ounce of glass contains 72 milligrams of vitamin
sleet_krkn [62]
Answer: 7.2 ounces


Explanation:



1) Data:

<span>- glass size: 9-ounce
</span><span>
</span><span>- content of vitamin C: 72 milligrams
</span><span>
</span><span>
</span><span>- glasssize: x
</span><span>
</span><span>- content of vitamin C: 60 milligrams
</span><span>
</span><span>
</span><span>2) Proportion
</span><span>
</span><span>
</span><span>9 ounces / 75 mg = x / 60 mg
</span><span>
</span><span>
</span><span>3) Solution:
</span><span>
</span><span>
</span><span>9 ounces × 60 mg = 75 mg × x
</span><span>
</span><span>
</span><span>⇒ x = 9 ounces × 60 mg / 75 mg = 7.2 ounces
</span>
7 0
4 years ago
What is the molarity of a solution composed
Neporo4naja [7]

Answer:

0.0845 M

Explanation:

First we <u>convert 4.27 grams of potassium iodide into moles</u>, using its <em>molar mass</em>:

  • Molar Mass of KI = 166 g/mol
  • 4.27 g ÷ 166 g/mol = 0.0257 mol

Now we <u>calculate the molarity of the solution</u>, using <em>the number of moles and the given volume</em>:

  • Molarity = moles / liters
  • Molarity = 0.0257 mol / 0.304 L = 0.0845 M
7 0
3 years ago
You push on the side of a toy truck rolling along the floor. What will happen to the motion of the truck?
sergeinik [125]

Answer:

The direction will be changed .

Explanation:

According to the principles of motion, if an object is moving with solitary velocity and if an external force is applied to it, then that force changes the position, speed, and direction of that object.

In the given question, an external force is being applied to the toy which will change the direction of that toy.

3 0
3 years ago
The endocrine system is made of which components?
AysviL [449]
Adrenal Glands
<span>Pancreas</span>
<span>Thyroid and Parathyroid Glands</span>
3 0
3 years ago
What state has the highest average speed limit on rural freeways
Daniel [21]

Answer:

wisconsin

Explanation:

6 0
3 years ago
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