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s344n2d4d5 [400]
3 years ago
13

Match these items.

Chemistry
1 answer:
Furkat [3]3 years ago
4 0
<span><span>Minerals are homogeneous, naturally occurring, inorganic solids. Each mineral has a definite chemical composition and a characteristic crystalline structure. A mineral may be a single element such as copper (Cu) or gold (Au), or it may be a compound made up of a number of elements. About 2,500 different minerals have been described.</span><span>Rocks are made up of one or more minerals.</span></span>THERE ARE THREE TYPES OF ROCKS. THEY ARE:<span>1. <span>Igneous Rocks </span>: Formed from the cooling of molten rock.<span>A. Volcanic igneous rocks formed from molten rock that cooled quickly on or near the earth's surface.
B. Plutonic igneous rocks are the result of the slow cooling of molten rock far beneath the surface.</span>2. <span>Sedimentary Rocks </span>: Formed in layers as the result of moderate pressure on accumulated sediments.
3. <span>Metamorphic Rocks </span>: Formed from older "parent" rock (either igneous or sedimentary) under intense heat and/or pressure at considerable depths beneath the earth's surface.</span><span>THE INTERRELATIONSHIP AMONG THE ROCK TYPES IS REFERRED TO AS THE
ROCK CYCLE</span>.THERE ARE FOUR MAIN LAYERS THAT MAKE UP THE EARTH:

<span>1.<span> Inner Core </span>- A mass of iron with a temperature of about 7000 degrees F. Although such temperatures would normally melt iron, immense pressure on it keeps it in a solid form. The inner core is approximately 1,500 miles in diameter.
2.<span> Outer Core </span>- A mass of molten iron about 1,425 miles deep that surrounds the solid inner core. Electrical currents generated from this area produce the earth's magnetic field.
3.<span> Mantle </span>- A rock layer about 1,750 miles thick that reaches about half the distance to the center of the earth. parts of this layer become hot enough to liquify and become slow moving molten rock or magma.
4.<span> Crust </span>- A layer from 4-25 miles thick consisting of sand and rock. hope i helped</span>
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When the coffee is brewed according to directions, a pound of coffee beans yields 50 cups of coffee (4 cups = 1 quart). How many
ycow [4]
About one kilogram of coffee beans is required 
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3 years ago
What is the ph of a solution that is 0.50 m in propanoic acid and 0.40 m in sodium propanoate. (ka for propanoic acid = 1.3 x 10
max2010maxim [7]
<span>The pH is given by the Henderson - Hasselbalch equation:
              pH = pKa + log([A-]/[HA])
              pH = -log(</span><span>1.3 x 10^-5) + log(0.50/0.40)
              pH = 4.98
The answer to this question is 4.98.
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3 0
3 years ago
What is the state of water at room temperature? Please someone help thank you
velikii [3]

it is in a liquid state

in room temperature

7 0
3 years ago
Read 2 more answers
What is the measurement 1043. L rounded off to two significant figures?
Sloan [31]

Answer:

1000L

Explanation:

the 1 is a sig fig and since the 0 is between the 1 and 4 its also a significant number. to round them off you look at the 0,then look back at the 4 since its less than 5 u round down. then u replace the 43 with 0's

3 0
3 years ago
If the pH of a 1.00-in. rainfall over 1800 miles2 is 3.70, how many kilograms of sulfuric acid, H2SO4, are present, assuming tha
NARA [144]
There are 2.32 x 10^6 kg sulfuric acid in the rainfall. 

Solution: 
We can find the volume of the solution by the product of 1.00 in and 1800 miles2: 
     1800 miles2 * 2.59e+6 sq m / 1 sq mi = 4.662 x 10^9 sq m 
     1.00 in * 1 m / 39.3701 in = 0.0254 m  
     Volume = 4.662 x 10^9 m^2 * 0.0254 m
                  = 1.184 x 10^8 m^3 * 1000 L / 1 m3
                  = 1.184 x 10^11 Liters 

We get the molarity of H2SO4 from the concentration of [H+] given by pH = 3.70: 
     [H+] = 10^-pH = 10^-3.7 = 0.000200 M 
     [H2SO4] = 0.000100 M  
 
By multiplying the molarity of sulfuric acid by the volume of the solution, we can get the number of moles of sulfuric acid: 
     1.184 x 10^11 L * 0.000100 mol/L H2SO4 = 2.36 x 10^7 moles H2SO4 

We can now calculate for the mass of sulfuric acid in the rainfall: 
     mass of H2SO4 = 2.36 x 10^7 moles * 98.079 g/mol
                               = 2.32 x 10^9 g * 1 kg / 1000 g
                               = 2.32 x 10^6 kg H2SO4
3 0
4 years ago
Read 2 more answers
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