An igneous rock has a coarse texture and is dark in color. How else can this rock be accurately described?

small crystals
cooled quickly
produced from magma
formed at Earth’s surface

Answer:

it's the first one

Explanation:

can you help me too

In this question, we have to find out how many grams of NaOH are in 3 moles of this compound, and the way to do that is by using its molar mass, 40g/mol, which means that in 1 mol of NaOH, we will have 40 grams, therefore, in 3 moles:

40g = 1 mol of NaOH

x grams = 3 moles of NaOH

x = 3 * 40

x = 120 grams of NaOH in 3 moles

Plants use carbon to build leaves and stems, which are then digested and used for cellular growth by animals. Carbon is stored in the atmosphere as gases such as carbon dioxide. It is also stored in the oceans, where it is captured by a variety of marine organisms.

A heterotroph is an organism that, unlike an autotroph, cannot fix carbon and instead grows on organic carbon.

Carbon dioxide is pulled from the air by photosynthesis to produce carbon-based food for plant growth. Carbon is transferred from plants to animals.

Carbon from plants moves through food chains to the animals that eat them. Animals that eat other animals absorb carbon from their food as well.

Thus, Organic molecules produced by photosynthesizes are consumed by food chains, and cellular respiration converts the organic carbon back into carbon dioxide gas.

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There are 4,000 parts per million (ppm) of chlorine in the pool.

To calculate the parts per million (ppm) of chlorine in the pool, we can use the formula:

ppm = (part / whole) x 1,000,000

In this case, the part is the amount of chlorine, which is given as 8 g, and the whole is the amount of water, which is 2,000,000 g. Substituting these values into the formula, we get:

ppm = (8 g / 2,000,000 g) x 1,000,000

Simplifying this expression, we find:

ppm = (4 x 10^-6) x 1,000,000

ppm = 4,000

This means that for every one million parts of the pool's water, there are 4,000 parts of chlorine. In other words, the concentration of chlorine in the pool is 4,000 ppm, indicating a relatively high level of chlorine compared to the water.

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The curve represents saturation. Below the curve, the water is unsaturated. Above the curve, water is supersaturated. This means that more solute is present than the water can contain.

The line of the solubility curve indicates that the solution is saturated. A saturated solution is defined as a solution in which 100 g of solute is dissolved in 100 g of water. Simulations below this line indicate unsaturated solutions.

The difference between unsaturated and saturated solutes can be determined by adding very small amounts of solute to the solution. In unsaturated solutes, solutes will dissolve, and solutes in saturated solutes will not dissolve. In saturated solutes, crystals will form very quickly around the added solute.

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Yes, it is true that the plant known as Lotus has a shiny surface.

This is referred to a type of plant which grows in mud and has micron- and nano-scale features.

It has a wax like surface which prevent dirt and water adhesion thereby making its surface to also be shiny and attracts insects for pollination in this regard.

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Answer:

Usually, you should lay down your educational background by listing the most recent or advanced degree first, working in reverse chronological order. But there are exceptions. Say you earned a degree in geography, but are now working in the field of online marketing. If you more recently completed coursework specific to social media or digital marketing, list that first to grab the reviewer’s attention.

Explanation:

Answer:

Start with the most recent  or advanced degree first, working in reverse chronological order.

Explanation:

Hydrogen gas is released when sodium metal interacts strongly with water to generate NaOH. Assume the final solution volume is 1.00 L and 10.0 g of Na fully reacts with 1.00 L of water.

a) molar mass of NaOH=39.9g/mol

b) 2 Na ( s ) + 2 H\(_2\)O ( l ) → 2 NaOH ( aq ) + H\(_2\) ( g )

c)  0.045M is the molarity

The link between mass and substance quantity (measured in moles) in any sample of a chemical compound is known as the molar mass (M) in chemistry. A material's molar mass is a bulk characteristic rather than a molecular one. The compound's molar mass is an average of many samples, several of which have varying masses due to isotopes.  A terrestrial average or a function of the proportional abundance and the isotopes of the component atoms on Earth.

2 Na ( s ) + 2 H\(_2\)O ( l ) → 2 NaOH ( aq ) + H\(_2\) ( g )

molar mass of NaOH=39.9g/mol

moles of Na = 10/22=0.45

moles of NaOH = 0.45

volume of solution = 0.45×22.4=10.0L

Molarity = number of mole/volume of solution

             =  0.45/10.0L

              = 0.045M

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Aluminium is a natural material that is widely utilised in a variety of sectors and may be converted into a variety of synthetic goods via various chemical processes.

The following are some examples of synthetic compounds created from aluminium and the accompanying chemical processes:

Thus, these are only a few examples of synthetic goods generated from aluminium and the chemical processes that produce them.

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Your question seems incomplete, the probable complete question is:

What synthetic products are derived from the natural resource aluminum? What kind of chemical processes are used to create these synthetic products?

Answer:

false

The nucleus houses the cell's DNA and directs the synthesis of proteins and ribosomes. ... Plant cells have a cell wall, a large central vacuole, chloroplasts, and other specialized plastids, whereas animal cells do not

Explanation:

Answer:

heat energy to keep you warm and light energy to be able to read your book

Explanation:

The order of the overall reaction is 5. This is because the rate law for the general reaction aA + bB → cC + dD is rate = [A]2[B]3.

The order of the overall reaction is the sum of the exponents in the rate law, which in this case is 2 + 3 = 5.Therefore, the order of the overall reaction is 5.

The order of a reaction is defined as the sum of the powers to which the concentrations of the reactants are raised in the rate law equation.

For the given reaction, the rate law is rate = [A]^2[B]^3, which means that the reaction rate depends on the square of the concentration of A and the cube of the concentration of B.So the overall order of the reaction is:

overall order = order with respect to A + order with respect to B

overall order = 2 + 3

overall order = 5

Therefore, the overall order of the reaction is 5.

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The order of the overall reaction is 5. This is because the rate law for the general reaction aA + bB → cC + dD is rate = [A]2[B]3.

The order of the overall reaction is the sum of the exponents in the rate law, which in this case is 2 + 3 = 5.

Therefore, the order of the overall reaction is 5. The order of a reaction is defined as the sum of the powers to which the concentrations of the reactants are raised in the rate law equation.

For the given reaction, the rate law is rate = [A]^2[B]^3, which means that the reaction rate depends on the square of the concentration of A and the cube of the concentration of B.

So the overall order of the reaction is:

overall order = order with respect to A + order with respect to B

overall order = 2 + 3

overall order = 5

Therefore, the overall order of the reaction is 5.

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Answer:

A. chemical energy

Explanation:

1. Double-Replacement reactions

2. Decomposition  

3. Combustion

4. Syntesis

5. Single replacement

Given

Chemical equations

Required

Type of reaction

Solution

1. 2AgNO₃ + MgCl₂ ⇒ 2AgCl + Mg(NO₃)₂

Double-Replacement reactions. Happens if there is an ion exchange between two ion compounds in the reactant

2. 2KBr⇒2K +Br₂

Decomposition  

Single compound breaks down in to 2 or more products

3. C₃H₈ + 5O₂ ⇒ 4H₂O + 3CO₂

Combustion

Hydrocarbon and Oxygen reaction and form water and carbon dioxide

4. NaO + H₂O ⇒ NaOH

Syntesis

2 or more reactants combine to form a single product

5. Zn + CuCl₂ ⇒ZnCl₂ + Cu

Single replacement

One element replaces another element from a compound

Answer:

Yes it is.

Explanation:

If you melted down the sugar, you can clearly use it.

NH4+ and C2H5NH3+ are the strongest acids based on the value of Kb (options A and option B).

To determine which cation is the strongest acid among the given options, we need to compare their Kb (base dissociation constant) values. The cation with the smallest Kb value will correspond to the strongest acid.

The Kb values are not provided, so we cannot make a direct comparison. However, we can make some general observations based on common trends and properties of the cations.

a. NH4+ (Ammonium ion): NH4+ is the conjugate acid of the weak base ammonia (NH3). It can act as a weak acid in water by donating a proton (H+). Ammonium ion is moderately acidic.

b. C2H5NH3+ (Ethylammonium ion): Similar to NH4+, C2H5NH3+ is the conjugate acid of a weak base, ethylamine (C2H5NH2). It can also act as a weak acid in water. Ethylammonium ion is moderately acidic.

c. C5H6N (Pyridine): Pyridine is a weak base and does not readily donate protons in water. Therefore, it is not an acid.

d. [C8H11N4O2]+ (Protonated histidine): Protonated histidine is a conjugate acid derived from the amino acid histidine. It can donate a proton and act as an acid. However, without the Kb value, we cannot compare its acidity to the other options accurately.

e. [NH2NH3CO]+ (Protonated urea): Protonated urea is the conjugate acid of urea, which is a weak base. Protonated urea can donate a proton and act as an acid. However, without the Kb value, we cannot compare its acidity to the other options accurately.

Based on the provided information, we can determine that NH4+ and C2H5NH3+ are moderately acidic, while pyridine does not act as an acid. The acidity ranking between [C8H11N4O2]+ and [NH2NH3CO]+ cannot be determined without the Kb values.

Therefore, among the given options, NH4+ and C2H5NH3+ are the strongest acids.

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Answer:

3

Explanation:

Protons and electrons are always the same.

Hope this is correct and helpful

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Answer:

no

Explanation:

because the characters are invalid

Answer:

no

Explanation:

because they are not valid

Answer:

B

Explanation:

DuPont created the first acrylic fibers in 1941 and trademarked them under the name Orlon.

A greenhouse gas that is exclusively anthropogenic is carbon dioxide (CO₂).

Global warming is responsible for the rise in the temperature of the earth due to several factors. This phenomenon of drastic rise in temperature of the earth due to some harmful gases viz. methane, carbon monoxide, Chlorofluoro carbons etc is called green house effect.

The gas that is exclusively anthropogenic in green house effect is carbon dioxide (CO₂) . Some other anthropogenic gases are Chlorofluoro carbons(CFC's), nitrous oxide (N₂O)  and hydrofluorocarbons (HFCs). The rise in the amount of CO₂ and CFC's is mainly caused by human activities on earth.

Carbon dioxide (CO₂) is also found to be naturally emitted from volcanic activity and respiration by living organisms, but its concentration is immensely increased in the atmosphere by burning of fossil fuels.

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The percent error for each of these measurements a.5.4%  b.1.8%  c.0%

d.3.6% for copper is 896 g/ml.

It is the difference in between the experimental and the theoretical values for the experiment results and divided by theoretical value multiplied by  100.

The percent error, 5.5 - 5.2 × 100 = 5.4%  

                                5.5 - 5.1 × 100 = .1.8%

                                 5.5 - 5.5 × 100 =.0%

                                 5.5 -  5.7 × 100 =3.6%

Therefore,  percent error for each of these measurements a.5.4%  b.1.8%  c.0% d.3.6% for copper is 896 g/ml.

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Answer:

\(\boxed {\boxed {\sf About \ 2.96 \ moles \ of \ Argon}}\)

Explanation:

To convert from grams to moles we must use the molar mass, which is found on the Periodic Table.

Use the molar mass as a ratio.

\(\frac{39.9 \ g \ Ar}{1 \ mol \ Ar}\)

Multiply by the given number of grams: 118

\(118 \ g \ Ar *\frac{39.9 \ g \ Ar}{1 \ mol \ Ar}\)

Flip the fraction so the grams of argon will cancel each other out.

\(118 \ g\ Ar * \frac{1 \ mol \ Ar}{39.9 \ g \ Ar}\)

\(118 * \frac{ 1 \ mol \ Ar}{39.9 \ g \ Ar}\)

\(\frac {118 \ mol \ Ar }{ 39.9 }\)

\(2.95739348 \ mol \ Ar\)

The original measurement of grams had 3 significant figures, so our answer must have 3 sig figs.

For the number we calculated, that is the hundredth place. The 7 in the thousandth place tells us to round the 5 to a 6.

\(2.96 \ mol \ Ar\)

There are about 2.96 moles of Argon in 118 grams.

AsF5 and SO2 exhibit dipole-dipole intermolecular forces.

The dipole-dipole intermolecular force arises due to the attraction between the positive and negative ends of polar molecules. Therefore, to determine which substance will exhibit primarily dipole-dipole intermolecular forces, we need to analyze the polarity of each molecule

Therefore, AsF5 and SO2 are the two substances that will exhibit primarily dipole-dipole intermolecular forces.

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To cook an egg in boiling water to the same hardness at the top of a mountain, we should cook the egg for a shorter time.

We are cooking the egg at a mountain which is at a very high altitude then where we normally live.

Because of the high altitude of the Mountain the atmosphere gets very thin.

And because of the thin atmosphere the pressure on the egg will be less than the usual pressure.

As we know that during cooking there will be less pressure on the egg so it will boil at a much faster rate.

Now, in order to cook the egg to the same hardness, we should change our normal cooking procedure in such a way that the egg is boiled to the same hardness.

So, we will cook the egg for a shorter period of time then the usual time.

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The following statements on HPLC modes are true is more polar compounds elute first in normal-phase HPLC (Option E).

The liquid chromatography (HPLC) is a technique in analytical chemistry employed for the separation, identification, and quantification of elements. It is considered a highly sensitive method, and it works by separating the components in a mixture with the assistance of a solvent under high pressure.

There are two modes of HPLC: Reversed-Phase HPLC (RP-HPLC) and Normal-Phase HPLC (NP-HPLC). In RP-HPLC, a nonpolar stationary phase, such as C18, is used, and polar solvents, such as water, are used as mobile phases. Polar stationary phases, such as silica gel, are used in NP-HPLC, while nonpolar solvents, such as hexane, are used as mobile phases.

More polar compounds have a greater affinity for the polar stationary phase than less polar compounds, which have a higher affinity for the nonpolar mobile phase in NP-HPLC. As a result, less polar compounds elute first in normal-phase HPLC.

Thus, the correct option is E.

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The line-bond formula for a triacylglycerol containing stearic acid and glycerol would show the three stearic acid molecules bonded to the three hydroxyl groups of the glycerol molecule.

A triacylglycerol, also known as a triglyceride, is a type of lipid that is composed of three fatty acid molecules and one glycerol molecule. Stearic acid is a saturated fatty acid with 18 carbon atoms, and glycerol is a three-carbon alcohol.

The line-bond formula for a triacylglycerol containing stearic acid and glycerol would show the three stearic acid molecules bonded to the three hydroxyl groups of the glycerol molecule. The formula would also show the chemical bonds between the carbon and hydrogen atoms of the fatty acid molecules.

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Acetic acid is the by product of production of aspirin. Aspirin crystals are formed after the acetic acid is removed through filtration of the acetic acid-water solution. Recrystallization from an ethanol/water solvent pair removes any trace levels of salicylic that are still present.

Acetylsalicylic acid (ASA), generally known as aspirin, is a nonsteroidal anti-inflammatory medication (NSAID) used to treat inflammation, fever, and/or pain as well as a blood thinner. Aspirin is used to treat a variety of inflammatory disorders, including Kawasaki disease, pericarditis, and rheumatic fever. 

Long-term usage of aspirin is also used to help those at high risk avoid further heart attacks, ischemic strokes, and blood clots.

The effects of pain or fever usually start to take effect after 30 minutes. While aspirin functions similarly to other NSAIDs, it also inhibits platelets' natural function.

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Answer:

Constant

Explanation:

Trust

Both the statement of the resonance and resonance structure of thiocyanate ion given in the question is False.

Resonance can occur even when the elements in a molecule do not keep the same formal charge. In fact, one of the main features of resonance is that it allows for the delocalization of electrons in a molecule, which can lead to the distribution of formal charge over multiple atoms. This delocalization can result in the stabilization of the molecule and increased reactivity. The resonance structures of the thiocyanate ion, SCN⁻, are not equivalent. The thiocyanate ion has two resonance structures, one where the negative charge is on the nitrogen atom and the other where the negative charge is on the sulfur atom. These two resonance structures are not equivalent because they have different atom connectivity and formal charges. In the nitrogen resonance structure, nitrogen has a formal charge of -1 and sulfur has a formal charge of +1, while in the sulfur resonance structure, sulfur has a formal charge of -1 and nitrogen has a formal charge of +1. However, both resonance structures contribute to the overall description of the molecule, which is an important feature of resonance.

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Complete Question

Resonance can only occur when the elements in the molecule keep the same formal charge. True False. The resonance structures of thiocyanate ion, SCN⁻ are equivalent. True False

False. Both the statement of the resonance and resonance structure of thiocyanate ion given in the question . Resonance can occur even when the elements in a molecule do not keep the same formal charge.

In fact, one of the main features of resonance is that it allows for the delocalization of electrons in a molecule, which can lead to the distribution of formal charge over multiple atoms. This delocalization can result in the stabilization of the molecule and increased reactivity. The resonance structures of the thiocyanate ion, SCN⁻, are not equivalent. The thiocyanate ion has two resonance structures, one where the negative charge is on the nitrogen atom and the other where the negative charge is on the sulfur atom. These two resonance structures are not equivalent because they have different atom connectivity and formal charges. In the nitrogen resonance structure, nitrogen has a formal charge of -1 and sulfur has a formal charge of +1, while in the sulfur resonance structure, sulfur has a formal charge of -1 and nitrogen has a formal charge of +1. However, both resonance structures contribute to the overall description of the molecule, which is an important feature of resonance.

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