Suppose digital technology, gold jewelry, and paper money caused the need for silver to no longer exist. would silver still be considered an ore? discuss
Answers
Yes, silver would still be considered an ore even if its demand and usage in digital technology, gold jewelry, and paper money decreased to the point of non-existence. Silver is a naturally occurring metallic element that is found in various ores, and its classification as an ore is based on its physical and chemical properties, regardless of its market demand. Therefore, even if the uses of silver in various industries decline, it would still be classified as an ore.
An ore is a naturally occurring mineral or rock containing valuable substances, typically metals, that can be extracted through mining and processed for various purposes. Even if the demand for silver decreases due to digital technology, gold jewelry, and paper money, it would not change the fact that silver is a naturally occurring material containing a valuable metal. The classification of silver as an ore is independent of its current or potential use in human activities.
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Related Questions
A fire that is burning wood will release water vapor and carbon dioxide
true or false?
Answers
Answer:
true.
Explanation:
Calculate the solubility at 25 °C of Ni(OH) 2 in pure water and in a 0.0190 M NaOH solution. You'll find K sp in the ALEKS Data tab. Round both of your answers to 2 significant digits.
Answers
The solubility at 25 °C of Ni(OH)₂ in pure water and in a 0.0190 M NaOH solution is 1.28 × 10⁻⁵ M.
According to the given information, Ksp for Ni(OH)₂ = 5.84 × 10⁻¹⁶ at 25°C. The solubility of Ni(OH)₂ can be determined by using the following formula:
Ksp = [Ni²⁺] [OH⁻]²
For this, we will assume that 'x' moles of Ni(OH)₂ will dissolve in water, which will dissociate into 'x' moles of Ni²⁺ and 2x moles of OH⁻.
Ksp = [Ni²⁺] [OH⁻]²
5.84 × 10⁻¹⁶ = (x) (2x)²
4x³ = 5.84 × 10⁻¹⁶
x³ = 1.46 × 10⁻¹⁷
x = 1.28 × 10⁻⁵ moles/L
Thus, the solubility of Ni(OH)₂ in pure water is 1.28 × 10⁻⁵ M at 25°C.
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Write an explanation on how filtration works, using the words: soluble and unsoluble.
Answers
Answer:
If a substance does not dissolve in a solvent, we say that it is insoluble. For example, sand does not dissolve in water – it is insoluble.
Filtration is a method for separating an insoluble solid from a liquid. When a mixture of sand and water is filtered:
the sand stays behind in the filter paper (it becomes the residue)
the water passes through the filter paper (it becomes the filtrate)
The slideshow shows how filtration works
Explanation:
1st
A beaker containing a mixture of insoluble solid and liquid. There is filter paper in a filter funnel above another beaker.
2nd
The mixture of insoluble solid and liquid is poured into the filter funnel.
3rd
The liquid particles are small enough to pass through the filter paper as a filtrate. The solid particles are too large to pass through the filter paper and stay behind as a residue.
Answer:
Filtration is the action or process of filtering something. Filtration is the method used for separating an insoluble solid from a liquid. Ex - oil and water
I am really sorry but I don't know how to include the word solube!!!
Whats the equation and answer for these two separate questions!!
Answers
Answer:
3).
\(time = \frac{distance}{speed} \\ time = \frac{225}{3} \\ time = 75 \: s\)
4).
\(speed = \frac{distance}{time} \\ speed = \frac{110}{55} \\ speed = 2 \: {ms}^{ - 1} \)
Use VSEPR theory to predict the bond angles in a molecule of methane (CH4), which is a covalently bonded molecule.
Answers
Answer:
109.5 Degrees
Explanation:
Because CH4 is sp4 hybridized (Carbon is bonded to the 4 Hydrogens), the geometry of the molecule must be tetrahedral. Tetrahedral moleculues have bond angles of 109.5 Degrees.
Help ASAP 15 points
Question 23 (1 point)
Compare and contrast the eukaryotic and prokaryotic cells. They have several features in common but they also differ in several ways. The two cells share All BUT ONE feature. Select the one way these two cells differ.
Question 23 options:
contain DNA
enclosed in protein capsule
undergo cellular respiration
produce proteins in ribosomes
Answers
Answer: number 1
Explanation:
Molecules at a higher temperature have _______ kinetic energy, speed, and momentum compared to molecules at a lower temperature.
Answers
Answer:
Molecules at a higher temperature have higher/more kinetic energy, speed, and momentum compared to molecules at a lower temperature.
Explanation:
Explain how the water cycle is a reversible process.
Answers
Answer:
The water cycle is a series a of reversible changes. The sea water under the action of heat get vaporised which in turn changes into clouds. These clouds provide rain. The rain water then flows to the streams and rivers which eventually falls back to the oceans and seas.
Identify the type of energy this object possesses. A girl roller-skating Kinetic energy Potential energy
Answers
A girl roller-skating has kinetic energy.
Kinetic energy is the energy of motion. It is the energy possessed by an object due to its movement. In this case, the girl roller-skating has kinetic energy because she is moving.
Potential energy is the energy an object possesses due to its position or configuration. It is the energy an object has stored within it, ready to be released. An object at rest has potential energy because it has the potential to be set in motion and does work.
So, in this case, the girl roller-skating has kinetic energy because she is moving, and not potential energy because she is not at rest.
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To prepare 100 mL of a 0.40 mol/L solution of copper (II) sulfate from a 1.80 mol/L solution. What volume of the concentrated solution was required?
Answers
The volume of the concentrated solution required to prepare 100 mL of a 0.40 mol/L solution of copper (II) sulfate from a 1.80 mol/L solution is 22.22mL.
How to calculate volume?Volume is a three-dimensional measure of space that comprises a length, a width and a height.
It can be measured in units of cubic centimeters (cm³), cubic inches (in³), however, that of a solution is measured in litres or milliliters (mL).
The volume of a solution can be calculated using the following formula:
C1V1 = C2V2
Where;
C1 = initial concentrationC2 = final concentrationV1 = initial volumeV2 = final volume100 × 0.4 = 1.8 × V2
40 = 1.8V2
V2 = 40 ÷ 1.8
V2 = 22.22mL
Therefore, the volume of the concentrated solution required to prepare 100 mL of a 0.40 mol/L solution of copper (II) sulfate from a 1.80 mol/L solution is 22.22mL.
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What is the mass of 1.55 x 10^24 molecules of chlorine?
Answers
Explanation:
Use the molecular formula to find the molar mass; to obtain the number of moles, divide the mass of compound by the molar mass of the compound expressed in grams.
What is a cold front? What kind of weather can you expect there?
Answers
if you see a fluorescent yellow-green traffic sign while driving, the color of the sign means it is
Answers
Answer:
Fluorescent yellow-green signs warn drivers of nearby schools, pedestrians, bicycles, playgrounds, and school bus routes. A “Pedestrian Crossing” sign for a school crossing is an example of a traffic sign that may have a fluorescent yellow- green background.
Explanation:
Which pair of elements have the same number of atomic orbitals?
A.
Silver and strontium
B.
Sodium and strontium
C.
Silver and sulfur
D.
Sulfur and strontium
Answers
Answer:
B I think
Explanation:
Answer:
B, I'm guessing by their characteristics
ANSWER AS SOON AS POSSIBLE PLEASE!!!! Which type of water represents the largest percentage of earths water?
Answers
Answer:
im pretty sure its groundwater just read this and see the answer
Explanation:
The ocean holds about 97 percent of the Earth's water; the remaining three percent is found in glaciers and ice, below the ground, in rivers and lakes. Of the world's total water supply of about 332 million cubic miles of water, about 97 percent is found in the ocean.
Plants use a process called photosynthesis to survive. What evidence proves this process is a chemical change?
A.Chloroplasts are green
B.Chloroplasts change shape
C.Sunlight is needed
D.Chloroplasts produce a new substance
Answers
Answer:
D
Explanation:
chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products.
Baicically a chemical reaction is one that new substance. No energy or anything is newly made, that would violate the law of conservation of mass , but rather a new substance.
in the following equation, what hybridization change, if any, occurs for phosphorus? pcl3 cl2 → pcl5 no change sp2 → sp3 sp → sp2 sp3 → sp sp2 → sp3d sp3 → sp3d
Answers
The hybridization change that occurs for phosphorus in the reaction PCl3 + Cl2 → PCl5 is sp3 → sp3d.The hybridization change that occurs for phosphorus in the reaction PCl3 + Cl2 → PCl5 is sp3 → sp3d.PCl3 + Cl2 → PCl5The above reaction is a balanced chemical equation.
The phosphorus (P) atom in PCl3 has a hybridization of sp3, whereas the Cl2 molecule has a hybridization of sp2. During the formation of PCl5, there is a hybridization change in the phosphorus atom from sp3 to sp3d.A change in the hybridization of an atom occurs when it is involved in a chemical reaction. The changes in hybridization occur due to the difference in electronegativity of the atoms in the reactants or due to the bond formation.
For instance, in the reaction PCl3 + Cl2 → PCl5, the reaction occurs due to the formation of a covalent bond between the P atom in PCl3 and Cl atom in Cl2. This causes the electrons in the 3p subshell of the P atom to undergo excitation, resulting in the hybridization change from sp3 to sp3d.Hence, the correct answer is sp3 → sp3d.
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What is the electron configuration for a calcium atom? 01s². 2s 2.2p5.3s 2.3p 5.4s¹ 02s², 2s ², 2p5.3s 2.3p 6,4s1 01s 2. 2s 2. 2p5.3s 2.3p 5, 452 Ots1,2s2, 2p5.3s 2.3p5,4s¹
Answers
Answer:
Ca = 1s²2s²2p⁶3s²3p⁶4s²
Explanation:
Calcium is located in the second column and the 4th row of the periodic table. Thus, there are 2 valence electrons and the highest quantum number is 4. This is represented by 4s². However, all of the previous orbitals and electrons must be listed beforehand, making the entire electron configuration: 1s²2s²2p⁶3s²3p⁶4s².
___ decrease a sample's boiling point and increase the range of_____
at which the sample will boil.
Answers
Answer:
Impurities and temperatures
Explanation:
12. Several isotopes of a certain atom "X" exist. 4.35% of all X atoms have a mass of 39.946 amu.
83.79% have a mass of 41.941 amu, 9.50% have a mass of 42.941 amu, and 2.36% have a mass of
43.939 amu. What is the average atomic mass of atom X?
Answers
Answer: 41.97
Explanation:
consider the reaction when aqueous solutions of ammonium phosphate and chromium(ii) sulfate are combined. the net ionic equation for this reaction is:
Answers
Explanation:
The reaction of aqueous solutions of iron(II) sulfate and ammonium phosphate leads to the formation of solid precipitate of iron phosphate and an aqueous solution of ammonium sulphate.
Molecular equation :
3
F
e
(
S
O
4
)
(
a
q
)
+
2
(
N
H
4
)
3
P
O
4
(
a
q
)
→
F
e
3
(
P
O
4
)
2
(
s
)
+
3
(
N
H
4
)
2
S
O
4
(
a
q
)
Total ionic equation :
3
F
e
+
2
(
a
)
+
3
(
S
O
4
)
2
−
(
a
q
)
+
6
(
N
H
4
)
+
(
a
q
)
+
2
P
O
3
−
4
(
a
q
)
→
F
e
3
(
P
O
4
)
2
(
s
)
+
6
(
N
H
4
)
+
(
a
q
)
+
3
S
O
2
−
4
(
a
q
)
Net ionic equation :
By canceling the spectator ions from total ionic equation, we get
3
F
e
+
2
(
a
q
)
+
2
P
O
3
−
4
(
a
q
)
→
F
e
3
(
P
O
4
)
2
(
s
)
The ____ energy of an object increases with its height.
Thermal
Chemical potential
Gravitational Potential
kinetic
Answers
Answer:
chemichal potential
Explanation:
Answer:
Gravitational Potential
I need help ASAP, please!!!
Kyle performed the following sequence of tests with a solution of Fe2+ ions:
(i)To a solution of iron (II) he added a little dil.H2SO4 , then hydrogen peroxide solution very slowly. He retained the mixture.
(ii) To the mixture that was retained he added sodium hydroxide.
Predict and explain what Kyle would observe in both steps in the above reaction sequence.
Answers
In the chemical reaction between Fe(II) ions and dilute sulfuric acid when hydrogen peroxide is added Fe(II) gets converted to Fe(III) ,on retaining mixture and adding NaOH precipitate of ferric hydroxide is obtained.
What is chemical reaction?Chemical reactions are defined as reactions which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical reaction.
There are several characteristics of chemical reactions like change in color, change in state , change in odor and change in composition . During chemical reaction there is also formation of precipitate an insoluble mass of substance or even evolution of gases.
There are three types of chemical reactions:
1) inorganic reactions
2)organic reactions
3) biochemical reactions
During chemical reactions atoms are rearranged and changes are accompanied by an energy change as new substances are formed.
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1 point
Given the unbalanced equation below. When the equation is correctly
balanced what is the coefficient in front of O2?*
Al(s) + O2(g)
O2(g) →_Al2O3(s)
1)6
2. 2
3. 3
4. 4
Answers
Answer:
bbecause it make the answer
CO2
What is the type of bond
Answers
Express in scientific notation.
1.24 x 10^6/
6.2 x 10^-3
Answers
Answer:
1.24*10^6=1.24*1000000=1240000
6.2*10^-3=6.2*0.001=0.0062
Explanation:
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From the values of Delta H and Delta S predict which of the following reactions would be spontaneous at 25degree C. Calculate the minimum temperature at which each reaction will become spontaneous. Enter "NONE" if the reaction is not spontaneous at any temperature. (a) Delta H = 12.6 kJ/mol, Delta S = 93 J/K middot mol spontaneous at 25degree C not spontaneous at 25degree C (b) Delta H = 9.5 kJ/mol, Delta S = -94.0 J/K middot mol spontaneous at 25degree C not spontaneous at 25degree C
Answers
(a) The reaction with Delta H = 12.6 kJ/mol and Delta S = 93 J/K·mol is spontaneous at 25°C.
(b) The reaction with Delta H = 9.5 kJ/mol and Delta S = -94.0 J/K·mol is not spontaneous at 25°C.
To determine whether a reaction is spontaneous at a given temperature, we can use the Gibbs free energy equation: Delta G = Delta H - T·Delta S, where Delta G is the change in Gibbs free energy, Delta H is the change in enthalpy, Delta S is the change in entropy, and T is the temperature in Kelvin.
For a reaction to be spontaneous, Delta G must be negative. If Delta H is negative (exothermic) and Delta S is positive (increase in disorder), the reaction is more likely to be spontaneous.
(a) For the reaction with Delta H = 12.6 kJ/mol and Delta S = 93 J/K·mol, we have Delta G = 12.6 kJ/mol - (25 + 273) K·(93 J/K·mol/1000 J/kJ) = -5.25 kJ/mol. Since Delta G is negative, the reaction is spontaneous at 25°C.
(b) For the reaction with Delta H = 9.5 kJ/mol and Delta S = -94.0 J/K·mol, we have Delta G = 9.5 kJ/mol - (25 + 273) K·(-94.0 J/K·mol/1000 J/kJ) = 3.57 kJ/mol. Since Delta G is positive, the reaction is not spontaneous at 25°C.
To determine the minimum temperature at which a non-spontaneous reaction becomes spontaneous, we can set Delta G equal to zero and solve for T in the equation Delta G = Delta H - T·Delta S. However, in this case, both reactions are either spontaneous or non-spontaneous at 25°C, so we do not need to calculate the minimum temperature.
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Which statement regarding serum magnesium (Mg ++) is true? (Select all that apply.) Alcohol-related diseases frequently cause low Mg+ levels. Vomiting is not generally seen as a major cause of Mg+ loss. Mg++ levels present similarly to calcium (Ca++) levels in the blood. Mg+ deficiencies often result in low serum potassium (K+) levels. Mg+ deficiencies must be treated before potassium (K+) deficiencies.
Answers
Answer:
-
Alcohol-related diseases frequently cause low Mg+ levels.
- Mg+ deficiencies must be treated before potassium (K+) deficiencies.
- Mg+ deficiencies often result in low serum potassium (K+)
- Mg++ levels present similarly to calcium (Ca++) levels in the blood.
- Vomiting is not generally seen as a major cause of Mg+ loss
3. What is the hydrogen ion concentration of a solution with a pH of 2.0?
Answers
Answer:
[H+] = 10^-2
Explanation:
pH = -log[H+]
2 = -log[H+]
[H+] = 10^-2
determine the concentration of nh 4(aq) if the change in gibbs free energy, δrxn , for the reaction is −9.45 kj/mol .
Answers
The concentration of ammonium ion in the given reaction is 0.734M. There are many types of molar (quantity) concentration, including normal concentration as well as osmotic concentration.
Concentration in chemistry is calculated by dividing a constituent's abundance by the mixture's total volume. Weight concentration, molar concentration, integer concentration, or volume concentration are four different categories of mathematical description. Any type of chemical combination can be referred to by the term "concentration," however the solvents and solutes in solutions are most usually mentioned.
NH\(_4\)Cl(s) → \(NH_4^+\) (aq) + \(Cl^-\)(aq)
ΔGrxn, for the reaction is = –9.27 kJ/mole
ΔG°rxn = -7.74 kJ/mole
T = 250C = 298K
ΔGrxn = ΔG°rxn + RT(lnQ)
Q= e^ ((ΔGrxn - ΔG°rxn)/RT)
Q = e^(–9.27 kJ/mole – ( -7.74 kJ/mole)/8 .314 J/K·mole x 298K
Q = 0.53929
Q = [ \(NH_4^+\)][ \(Cl^-\)]
Q = x²
√Q = x
x = √0.53929
[NH4+] = 0.734M
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