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
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.
You might be interested in
A stone is dropped from the roof of a building; 2.00s after that, a second stone is thrown straight down with an initial speed o
Brut [27]
A) -0.5(9.8)*t^2 = -25(t-2) - 0.5(9.8)(t-2)^2 
-4.9t^2 = -25t + 50 - 4.9(t^2-4t+4) 
0 = -25t+50+19.6t - 19.6 
5.4t = 30.4 
t = 5.62962963 s 

b) h = -4.9(5.62962963)^2 
h = -155.2943759 
the building is 155.2943759 m high 

c) speed 0of first stone 
= at 
= 9.8*5.62962963 
= 55.17037037 m/s 
speed of second stone
= v + at
= 25+9.8*3.62962963 
= 60.57037037 m/s
7 0
4 years ago
What is the sequence of coefficients that will balance the following decomposition reaction of dihydrogen monosulfide? H₂S ----&
RUDIKE [14]

8 S

In this case you must start balancing the sulfur to have 8 on each side of the reaction. So:

Answer:

Explanation:

The law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.

Then, you must balance the chemical equation. For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts.  

The coefficients located in front of each molecule indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.

By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction.

Then, taking into account all of the above, you can determine the amount of elements on each side of the equation:

Left side: 2 H and 1 S

Right side: 2 H and 8 S

In this case you must start balancing the sulfur to have 8 on each side of the reaction. So:

8 H₂S → H₂ + S₈

Now the amount of elements on each side of the equation:

Left side: 16 H and 8  

Right side: 2 H and 8 S

Now you need to start balancing the hydrogen to get the same amount from each side of the reaction. So:

8 H₂S → 8 H₂ + S₈

Now the amount of elements on each side of the equation:

Left side: 16 H and 8  

Right side: 16 H and 8 S

<u><em>The balanced reaction is:</em></u>

<u><em>8 H₂S → 8 H₂ + S₈</em></u>

3 0
3 years ago
What is the difference between a balanced equation and an unbalanced equation
Nadya [2.5K]
In balanced equation there are same number of atoms in each element on both sides of the equation. unbalanced equation is when there are different number of atoms in each element on the both sides
6 0
3 years ago
Which statement below matches the correct response with the proper reasoning when comparing the volatility of CH2Cl2 with CH2Br2
Nutka1998 [239]

Answer:

b. CH₂Cl₂ is more volatile than CH₂Br₂ because of the large dispersion forces in CH₂Br₂

Explanation:

CH₂Cl₂ is more volatile than CH₂Br₂ (b.p of CH₂Cl₂ = 39,6 °C; b.p of CH₂Br₂ = 96,95°C). Thus, c. and d. are FALSE

Dipole-dipole interactions in CH₂Cl₂ are greater than the dipole-dipole interactions in CH₂Br₂ because Cl is more electronegative that Br (Cl = 3,16; Br = 2,96). But this mean CH₂Cl₂ is less volatile than CH₂Br₂ but it is false.

There are large dispersion forces in CH₂Br₂ because Br has more electrons and protons than Cl. Large disperson forces mean CH₂Br₂ is less volatile than CH₂Cl₂ and it is true.

I hope it helps!

5 0
3 years ago
How were the Earth’s Layers formed?
olchik [2.2K]

Answer:

yes here

Explanation:

The major layers of the Earth, starting from its center, are the inner core, the outer core, the mantle, and the crust. These layers formed as the building blocks of Earth, known as planetesimals, collided and collapsed under their own gravity around 4.5 billion years ago

8 0
3 years ago
Read 2 more answers
Other questions:
  • In the following question, select the odd word from the given alternatives.
    5·1 answer
  • How does heavy water in a nuclear reactor help to keep the chain reaction going?
    14·1 answer
  • Chemical decontamination can be accomplished with liquids such as chlorox, Lysol, amphyl or a gas such as ethylene oxide.
    15·1 answer
  • So2 (5.00 g) and co2 (5.00 g) are placed in a 750.0 ml container at 50.0 °c. the partial pressure of so2 in the container was __
    12·2 answers
  • olecular iodine, I2(g), dissociates into iodine atoms at 625 K with a first-order rate constant of 0.271 s-1. (a) What is the ha
    12·1 answer
  • Which of the following elements has the highest first ionization energy: Na, Mg, S or Cl?
    12·1 answer
  • 9. In the reaction of sodium hydroxide with chlorine gas, sodium chloride, sodium hypochlorite, and water a
    11·1 answer
  • A bonfire and a Bunsen burnet form of energy
    8·1 answer
  • 5. A family is traveling using three different modes of transportation. Seven of them travel in a large recreational vehicle, tw
    15·1 answer
  • 8. The threats to biodiversity are except:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!