All categories

3 years ago

4. How do minerals become part of the soil?

Chemistry

2 answers:

Gelneren [198K]3 years ago

5 0

I think it is C hope it helps

Goryan [66]3 years ago

4 0

Answer:

Explain how nearly anyone could become a miner under Spanish Mining Code.

Explanation:

You might be interested in

g. Hot water at 100 °C is added to 300 g of water at 0 °C until the final temperature is 40 °C. Find the mass of the hot water a

Evgen [1.6K]

Answer:

000

Explanation:

name

God

000answer

8 0

2 years ago

- Calculate the Standard Enthalpy of the reaction below:

ANEK [815]

Answer:

Explanation:

We have the three equations:

$NH_{3(g)} + HCl_{(g)} => NH_4Cl_{(s)} ..... \Delta H = ? (1)\\2HCl_{(g)} => H_{2(g)} + Cl_{2(g)} .... \Delta H = +184.6 kJ (2)\\2H_{2(g)} + 1/2N_{2(g)} + 1/2Cl_{2(g)} => NH_4Cl_{(s)} ..... \Delta H = -314.2 kJ (3)\\ N_{2(g)} + 3H_{2(g)} => 2NH_{3(g)} .... \Delta H = +184.6kJ (4)$

(can you double check that it is 184.6kJ for both equations 2 and 4 because it seems unlikely). We need to solve for equation 1 by addition and changing equations 2, 3 and 4. After possibly some trial and error, we can find that if we flip equations 4, multiply equation 3 by 2, add the equations together, and then finally divide by 2, we can get equation 1. We will get the answer of -314.2 kJ. However, I am again skeptical about the delta H values for equation 2 and 4 so double check that. This method might be super confusing and it is really hard to explain. So what I would suggest you to watch videos on Hess' law.

3 0

3 years ago

100 POINTS. PLEASE HELP!!! born haber cycle problem b. need to find enthalpy of atomization of Mn. I attempted it but I keep get

Rom4ik [11]

Answer:

The Born Haber cycles is an adaption of Hess’s law to calculate lattice enthalpy from other data

The lattice enthalpy cannot be determined directly. We calculate it indirectly by making use of changes

for which data are available and link them together in an enthalpy cycle the Born Haber cycle

Enthalpy of lattice formation

The Enthalpy of lattice formation is the standard enthalpy

change when 1 mole of an ionic crystal lattice is formed

from its constituent ions in gaseous form. Na+

(g) + Cl- (g)  NaCl (s) [Latt H = -787 kJ mol-1

]

Enthalpy of lattice dissociation

The Enthalpy of lattice dissociation is the standard enthalpy

change when 1 mole of an ionic crystal lattice form is

separated into its constituent ions in gaseous form.

NaCl (s)  Na+

(g) + Cl- (g) [Latt H = +787 kJ mol-1

]

Generally Lattice Enthalpy refers to the enthalpy change when a lattice is made from gaseous ions.

Some exam boards refer to the opposite process at tim

Explanation:

7 0

2 years ago

Rank the following oxides in order of increasing aqueous acidity: Ga₂O₃, Al₂O₃,In₂O₃

Phantasy [73]

The correct answer is In2O3 < Ga2O3 < Al2O3.

Ga2O3, Al2O3, and In2O3 are the oxides to rank in order of increasing aqueous acidity.

According to the contemporary periodic table's rule, an oxide group's acidity decreases.

The oxidation state of Gallium (Ga) in Ga2O3 = +3

The oxidation state of Aluminium (Al) in Al2O3 = +3

The oxidation state of Indium (In) in In2O3 = +3

From modern periodic table, the order of elements in group 3A is as below:

Baron (B), Aluminum (Al), Gallium (Ga), Indium (In), and Thallium (Tl)

Thus, we can get the oxides in order of increasing their aqueous acidity as below:

In2O3 < Ga2O3 < Al2O3

To learn more about aqueous acidity refer the link:

brainly.com/question/18648828

#SPJ4

4 0

2 years ago

How do you name ionic compounds?

ryzh [129]

Answer:

Consult the periodic table of elements

Explanation:

When naming ionic compounds, all of the information you’ll need is on the periodic table. Ionic compounds are formed of a metal (cation) and a non-metal (anion). You can find metals on the left and central sections of the periodic table (e.g., Barium, Radium, and Lead), while you can find non-metals on the right side of the table.[1]

6 0

3 years ago