Which of the following describes the correct order for relative solubility of minerals in sedimentary rocks? a. Evaporate minerals, quartz, and calcite all have the same relative solubility.
b. Evaporate minerals are more soluble than calcite and quartz.
c. Evaporate minerals are more soluble than quartz and less soluble than calcite.
d. Evaporate minerals are less soluble than quartz and calcite.

Answers

Answer 1

Answer:

Answer:

Evaporate minerals are more soluble than calcite and quartz.

Explanation:

Evaporate minerals are the water soluble minerals which at higher concentration precipitate out and crystallized forming rocks.

example of chemicals present are:

chlorides and sulphates.

Quartz is silica (very less soluble, or insoluble)

Calcite is calcium carbonate, again an insoluble salt.

Thus

Evaporate minerals are more soluble than calcite and quartz.

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Calculate the mass in grams for 0.251 moles of Na2CO3
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Conventional fossil fuels are harmful to the environment. Alternative solutions include using nuclear energy or solar energy. A decision to opt for solar power over nuclear energy might be based on which of these facts?A) Nuclear energy is highly unreliable and difficult to store. B) Solar power plants can be easily set up over small tracts of land. EliminateC) Wastes from nuclear power plants are harmful and difficult to manage. D) Solar energy is independent of season and can be easily trapped and stored.

Why does the mixture of Fe and S have different reactions than the compound FeS?

Answers

Answer:

fe+s is a mixture of iron and sulphur and it can be separated by magnetic separation. But FeS is a compound formed by heating iron and sulphur together.it can't be separated by any method.

Explanation:

How many grams of solid sodium cyanide should be added to 1.00 L of a 0.119 M hydrocyanic acid solution to prepare a buffer with a pH of 8.809

Answers

Answer:

1.62 g

Explanation:

Given that:

Concentration of HCN = 0.119 M

Assuming the ka 4.00 × 10⁻¹⁰

The pKa of HCN (hydrocyanic acid) = -log (Ka)

= - log ( 4.00 × 10⁻¹⁰)

= 9.398

pH of buffer = 8.809

Using Henderson Hasselbach equation:

$pH = pKa + log ([conjugate\ base ])/(acid)$

$pH = pKa + log ([CN^-])/([HCN])$

$8.809 = 9.398 +log ([CN^-])/([HCN])$

$log ([CN^-])/([HCN])= 8.809 - 9.398$

$log ([CN^-])/([HCN])= -0.589$

$([CN^-])/([HCN])= 0.2576$

[CN^-] = 0.2576[HCN]

[CN^-] = 0.2756 (0.119) L

[CN^-] = 0.033 M

∴

The amount of NaCN (sodium cyanide) is calculated as follows:

$= 1.00 L * (0.033 \ mol \ NacN )/(1 \ L ) * (49.01 \ g)/(1 \ mol \ of \ NacN)$

= 1.62 g

The equation represents the decomposition of a generic diatomic element in its standard state. 12X2(g)⟶X(g) Assume that the standard molar Gibbs energy of formation of X(g) is 4.25 kJ·mol−1 at 2000. K and −63.12 kJ·mol−1 at 3000. K. Determine the value of K (the thermodynamic equilibrium constant) at each temperature.

Answers

Answer:

$K^(2000K)=0.774\n\nK^(3000K)=12.56$

Explanation:

Hello,

In this case, considering the reaction, we can compute the Gibbs free energy of reaction at each temperature, taking into account that the Gibbs free energy for the diatomic element is 0 kJ/mol:

$\Delta _rG=\Delta _fG_(X)-(1)/(2) \Delta _fG_(X_2)=\Delta _fG_(X)$

Thus, at 2000 K:

$\Delta _rG=\Delta _fG_(X)^(2000K)=4.25kJ/mol$

And at 3000 K:

$\Delta _rG=\Delta _fG_(X)^(3000K)=-63.12kJ/mol$

Next, since the relationship between the equilibrium constant and the Gibbs free energy of reaction is:

$K=exp(-(\Delta _rG)/(RT) )$

Thus, at each temperature we obtain:

$K^(2000K)=exp(-(4250J/mol)/(8.314(J)/(mol* K)*2000K) )=0.774\n\nK^(3000K)=exp(-(-63120J/mol)/(8.314(J)/(mol* K)*3000K) )=12.56$

In such a way, we can also conclude that at 2000 K reaction is unfavorable (K<1) and at 3000 K reaction is favorable (K>1).

Best regards.

Which words or phrases identify the types of temperate climates? Check all that apply. humid continental

highland
it is actually science on the subject but it doesn't have that option.
marine west coast

Mediterranean

subarctic

tropical wet-dry

Answers

Marine west coast and Mediterranean are the types of temperate climates, due to the dispersion of precipitation throughout the year, temperate marine climates are typically distinguished by a notable lack of dry season, hence options D and E are correct.

What is temperate climates?

Temperate climates are regions with moderate annual or seasonal rainfall, intermittent drought, mild to warm summers, and cool to cold winters.

Humid subtropical, marine west coast, Mediterranean are the phrases that clearly identified with temperate marine climates.

Geographically speaking, the moderate climates of Earth are found in the middle latitudes, which are halfway between the tropics and the poles.

Therefore, options D and E are correct.

Learn more about temperate climates, here:

brainly.com/question/12234662

#SPJ2

Answer:

Humid Continental

Marine west coast

Mediterranean

subarctic

Explanation:

just did assignment on edge

What is the molecular geometry if you have a double bond, a single bond and 1 lone pair around the central atom?

Answers

Answer:

4 pairs are needed for the bonds, leaving 1 lone pair. Each double bond uses 2 bond pairs and can be thought of as a single unit. There are 2 double bond units and 1 lone pair, which will try to get as far apart as possible - taking up a trigonal planar arrangement.

What would the initial pH of a acetate/acetic acid buffer system (pKa = 4.75) if the concentration of acetate is 1.36 × 10-2 molar and the concentration of acetic acid is 1.64 × 10-1?A.
5.83
B.
3.67
C.
2.08
D.
1.66

Answers

Answer:

B) pH = 3.67

Explanation:

$pH = pK_(a) +log([A^(-)])/([HA]) \n$

$pH = 4.75+log([1.36*10^(-)2])/([1.64*10^(-1)]) = 3.67$

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