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Masteriza [31]
3 years ago
10

Some soils are made mostly of loess. loess is silt-sized sediment deposited by _______.

Chemistry
2 answers:
erica [24]3 years ago
8 0
There are soils that are made up of loess. Loess is a sediment that is formed from silt deposits due to wind. The composition of the silt is clay and sand. The components are cemented together by calcium carbonate. The silts are blown by wind and accumulate in a singular location.
Angelina_Jolie [31]3 years ago
5 0

The answer to: Some soils are made mostly of loess. Loess is silt-sized sediment deposited by <u>Wind.</u> The answer is wind

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How many moles of carbon dioxide are produced from the combustion of 110 g of ch4.
viva [34]

Answer:

answer: 6.875 moles

Explanation:

nCH4 = nCO2 = 110/(12 + 4) = 6.875

8 0
2 years ago
A gas cylinder contains 2.0 mol of gas X and 6.0 mol of gas Y at a total pressure of 2.1 atm. What is the partial pressure of ga
vivado [14]

Answer :  The partial pressure of X and Y gases are, 0.525 and 1.575 atm respectively.

Explanation : Given,

Moles of X = 2.0 mole

Moles of Y = 6.0 mole

Total pressure = 2.1 atm

Now we have to calculate the mole fraction of X and Y.

\text{Mole fraction of }X=\frac{\text{Moles of }X}{\text{Moles of }X+\text{Moles of }Y}

\text{Mole fraction of }X=\frac{2.0}{2.0+6.0}=0.25

and,

\text{Mole fraction of }Y=\frac{\text{Moles of }Y}{\text{Moles of }X+\text{Moles of }Y}

\text{Mole fraction of }Y=\frac{6.0}{2.0+6.0}=0.75

Now we have to calculate the partial pressure of X and Y.

According to the Raoult's law,

p_i=X_i\times p_T

where,

p_i = partial pressure of gas

p_T = total pressure of gas  = 2.1 atm

X_i = mole fraction of gas

p_{X}=X_{(X)}\times p_T

p_{X}=0.25\times 2.1atm=0.525atm

and,

p_{Y}=X_{(Y)}\times p_T

p_{Y}=0.75\times 2.1atm=1.575atm

Thus, the partial pressure of X and Y gases are, 0.525 and 1.575 atm respectively.

4 0
3 years ago
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______ is the maximum population an area can support on a long-term basis without experiencing negative effects.
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Answer:

carrying capacity

Explanation:

4 0
2 years ago
H3BO3(aq) + HS-(aq) H2BO3-(aq) + H2S(aq) What is the sequence of Brønsted-Lowry acids and bases?
PilotLPTM [1.2K]
Acid + base base + acid
4 0
3 years ago
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You are reporting the concentration of a solution formed by Dissolving a solid and a liquid Which is the best way to express the
velikii [3]
The best way to express the concentration of a solution depends on the use of the information.

Some ways to express the concentration are: percent mass/mass, percen mass/volumen, percent volume/volume, ppm, molaritiy, molality, normality, mole fraction, among others.

If I am not going to perform a special chemical calculation (like pH or acid/base neutralization, or a colligative property) I'd probably rather to use percent mass/mass.

Percent mass/mass is an easy and intuitive way to understand how concentrated a solution is.

For example, it is easy for you to grasp that a 10% solution of NaCl has the double amount of salt than a 20% solution of NaCl.

But if you want to calculate a colligatiive property like the boiling point increase or freezing point depression of a solvent you need the molality of the solution.

And if you want to calculate the pH of a solution, you will need to know the molarity.

If you are working with very low concentrations, for example the amount of lead in a sample of a food ingredient, you'd rather work with ppm.

Each concentration measure has its own use.
6 0
3 years ago
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