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brilliants [131]
3 years ago
14

2. A geologist working in a national park finds a mineral. They are carrying a kit that contains a penny, a hand lens, a piece o

f tile, a geologic hammer, and a jackknife. Describe how the geologist can use these items to determine some of the mineral’s characteristics. (4 points)
You will need to write about all 5 tools in the geologist’s kit and what properties of the mineral that they could observe with them. Remember to also write about all 5 properties of minerals: streak, luster, cleavage, fracture, and hardness
Chemistry
1 answer:
SVETLANKA909090 [29]3 years ago
7 0
The hand lens can be used to identify any features such as cleavage, to a certain extent of course.

He/She could use the tile to look at the streak of the mineral.

The Hammer to open a fresh surface and examine the aformentioned features such as cleavage.

And use the knife to scratch it, and compare it to the scratch of the coin to test the hardness against copper/steel. Although a coin is not common practice in my experience.
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<h3>What is a graph?</h3>

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2 years ago
1. You put an unknown substance into a graduated cylinder filled with 60 ml of
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Answer:

17g 18ml 170ml

Explanation:

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Cao(s) reacts with water to form ca(oh)2(aq). if 6.50 g cao is combined with 99.70 g h2o in a coffee cup calorimeter, the temper
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3 years ago
Solutions of hydrochloric acid caused the light bulb to glow brighter than solutions of acetic acid. how do you account for the
maksim [4K]
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7 0
3 years ago
Gas is contained in a 9.00-L vessel at a temperature of 24.0°C and a pressure of 5.00 atm. (a) Determine the number of moles of
coldgirl [10]

Answer:

a. Moles in the vessel = 1.85 moles of the gas

b. 1.11x10²⁴ molecules are in the vessel

Explanation:

a.It is possible to determine moles of a gas using the general law of gases:

PV = nRT

<em>Where P is pressure: 5.00atm; V is volume = 9.00L; R is gas constant: 0.082atmL/molK; T is absolute temperature: 273.15K +24.0 = 297.15K</em>

<em />

Computing the values:

PV / RT = n

5.00atm* 9.00L / 0.082atmL/molK*297.15K = n

<h3>Moles in the vessel = 1.85 moles of the gas</h3><h3 />

b. With Avogadro's number we can convert moles of any compound to molecules thus:

Avogadro's number = 6.022x10²³ molecules / mole

1.85moles ₓ (6.022x10²³ molecules / mole) =

<h3>1.11x10²⁴ molecules are in the vessel</h3>
3 0
4 years ago
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