What is a safety decision

Answer:

4

Explanation:

This is how Cr(NO3) dissociates

Cr(NO3) --> Cr+1 + NO3-

With one molecule of Cr(NO3), we can see that we have two ions. The question asks for 2 molecules, so it will be 4 total ions.

First, we write down our reaction:

N2 + 3H2 → 2NH3

Don't forget to balance it.

We only use moles as units.

Procedure:

3 x 1 mole H2 ------------ 2 x 1 mole NH3

3.1 moles H2 ------------- x

x = 2.1 moles NH3 are produced

Answer: 2.1 moles NH3

Answer:

the microwave energy converts to heat energy to cook the food.

Explanation:its simple

Answer:

A microwave oven converts electrical energy into radiant energy (which is converted to thermal energy), and a television converts electrical energy into sound energy and radiant energy.:

Answer:

C - apparent magnitude

Explanation:

Answer:

They are already matched for you. It goes

1.

2.

3.

in the order of the questions.

Answer:

Fe2+ is greater in size than Fe3+. Consider the electronic configuration of Fe2+[Ar] 3d6 and Fe3+[Ar] 3d5 (For comparison, Fe [Ar] 4s2 3d6). Fe3+ ionic radius is 63 pm, while Fe2+ has an ionic radius of 77 pm. ... This is because the outermost electron in the Fe2+ ion is pulled off to form Fe3+ ion.

Explanation:

taking a special juice independent variable

the number of stuck of paper dependent variable

the control group is group B

experimental group is Group A

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Reaction of sodium with water

Sodium metal reacts rapidly with water to form a colourless solution of sodium hydroxide (NaOH) and hydrogen gas (H2). The resulting solution is basic because of the dissolved hydroxide. The reaction is exothermic. During the reaction, the sodium metal may well become so hot that it catches fire and burns with a characteristic orange colour. The reaction is slower than that of potassium (immediately below sodium in the periodic table), but faster than that of lithium (immediately above sodium in the periodic table).

2Na(s) + 2H2O → 2NaOH(aq) + H2(g)

The balanced chemical equation form of the following equation is Br₂ + 2S₂O₃²⁻ + 10H₂O ⇒ 2Br⁻ + 4SO₄²⁻ + 2OH⁺.

A chemical equation is said to be balanced if the quantity of each type of atom in the reaction is the same on both the reactant and product sides. In a balanced chemical equation, the mass and the change are both equal.

Because mass cannot be generated or destroyed, according to the rule of conservation of mass, a chemical equation must always be in balance.

It's necessary to balance a chemical equation and a chemical reaction. This is so that it can convey how many moles are reacting and creating. The amount of electron that are transferred from one substance to another is also indicated.

Thus, balanced chemical equation is 2S₂O₃²⁻ + 10H₂O ⇒ 2Br⁻ + 4SO₄²⁻ + 2OH⁺.

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A) At the lower triple point, which is the point where the solid, liquid, and gas phases can coexist in equilibrium, the phases present are diamond, graphite, and liquid.

B) At 100 atm and 6000 K, the stable phase of carbon is graphite.

C) The process of lowering the temperature and raising the pressure is necessary to produce liquid carbon from the lower triple point.

At 100 atm and 6000 K, the stable phase of carbon is graphite. This means that under these specific conditions, graphite is the most thermodynamically stable phase of carbon.
If one were to start from the lower triple point and want to produce liquid carbon, they would need to lower the temperature and raise the pressure. This is because at the lower triple point, the pressure and temperature are balanced between the three phases. To shift the equilibrium towards the liquid phase, one needs to lower the temperature, which reduces the kinetic energy of the atoms and makes it easier for them to stick together, forming a liquid. Additionally, raising the pressure compresses the atoms together, which also makes it easier for them to stick together and form a liquid.
Therefore, the process of lowering the temperature and raising the pressure is necessary to produce liquid carbon from the lower triple point. Understanding the phase diagram of carbon is essential for many applications, including material science, metallurgy, and the development of advanced materials.

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A reasonably constant condition results from equilibrium, according to the force field analysis, when driving forces of change are equal to restraining forces of change.

A force field is a computer technique used to estimate the forces between atoms within molecules as well as between molecules in the context of chemistry and molecular modelling.

Driving forces are those that exert pressure in a direction that brings about a change or that enable a change by exerting pressure on a person in the desired direction. Restraining forces are those that work against the driving force and impede change by pulling a person in the opposite direction of what is wanted.

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The weight of caffeine obtained from a sublimation reaction, you would need to measure the mass of the product obtained, value obtained should be compared to the typical weight of caffeine found in two tea bags to determine if it makes sense.

To confirm if the obtained product is caffeine from the sublimation reaction, you can perform a few tests:

1. Melting Point: Measure the melting point of the product and compare it to the known melting point of caffeine (approximately 238-240°C). If they match, it suggests the presence of caffeine.

2. Spectroscopy: Use techniques like infrared spectroscopy or nuclear magnetic resonance (NMR) spectroscopy to analyze the functional groups and structural characteristics of the product. Caffeine has specific absorption patterns that can be identified through spectroscopic analysis.

3. TLC Analysis: Perform Thin Layer Chromatography (TLC) analysis to separate and visualize the components of the product. Compare the Rf values of the obtained product with the Rf value of caffeine, which can be found in literature. If they match, it indicates the presence of caffeine.

Remember, the weight of caffeine obtained will depend on the specific reaction conditions and starting material used.

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The partial pressure of each gas at equilibrium and the value of the pressure equilibrium constant, Kp at 250°C is 1458.

                   PCl₅(g)           →          PCl₃(g)            Cl₂(g)

initial            189.2                            0                        0

change          −x                               +x                     +x

equilibrium   189.2−x                        x                        x

At equilibrium, we can use the total pressure inside the flask as a starting point to solve for x.

358.7 = 189.2−x + x + x

x = 169.5

At equilibrium, each gas's partial pressure is:

PPCl₅ = 189.2 − 169.5 = 19.7torr

PPCl₃ = 169.5torr

PCl₂ = 169.5torr

Calculating the pressure equilibrium constant's value

Kp = P(PCl₃) P(Cl₂) / P(PCl₅)

= (16.95torr)(169.5torr)/197torr

Kp = 1458

Therefore, The partial pressure of each gas at equilibrium and the value of the pressure equilibrium constant, Kp at 250°C is 1458.

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Answer:

NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(l)

Explanation:

Sodium hydroxide (NaOH) is a strong base and hydrochloric acid (HCl) is a strong acid. That means that they are totally dissociated into ions in aqueous solution.

When a solution of NaOH is mixed with a solution of HCl, a neutralization reaction occurs, in which a salt (NaCl) and water (H₂O) are formed.

The balanced molecular equation for this reaction is:

NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(l)

Answer:  Hit the skin with a needle or pin is a good example of stimulus. The sudden removing of the hand is the response.

When somebody bangs a door you jump if you were unaware because of the sound. ...

Holding a hot plate we fling hand away from it.

Explanation: Hopefully this helps!

Answer:

Approximately \(0.08\; \rm mol\), assuming that this gas is an ideal gas.

Explanation:

Look up the standard room temperature and pressure:\(25\; \rm ^{\circ}C\) and \(P = 101.325 \; \rm kPa\).

The question states that the volume of this gas is \(V = 2\; \rm dm^{3}\).

Convert the unit of all three measures to standard units:

\(\begin{aligned} T &= 25\; \rm ^{\circ}C \\ &= (25 + 273.15)\; \rm K \\ &= 293.15\; \rm K\end{aligned}\).

\(\begin{aligned}P &= 101.325\; \rm kPa \\ &= 101.325 \; \rm kPa \times \frac{10^{3}\; \rm Pa}{1\; \rm kPa} \\ &= 1.01325 \times 10^{5}\; \rm Pa\end{aligned}\).

\(\begin{aligned}V &= 2\; \rm dm^{3} \\ &= 2 \; \rm dm^{3} \times \frac{1\; \rm m^{3}}{10^{3}\; \rm dm^{3}} \\ &= 2 \times 10^{-3}\; \rm m^{3}\end{aligned}\).

Look up the ideal gas constant in the corresponding units: \(R \approx 8.31\; \rm m^{3}\cdot Pa \cdot mol^{-1} \cdot K^{-1}\).

Let \(n\) denote the number of moles of this gas in that \(V = 2\; \rm dm^{3}\). By the ideal gas law, if this gas is an ideal gas, then the following equation would hold:

\(P \cdot V = n \cdot R \cdot T\).

Rearrange this equation and solve for \(n\):

\(\begin{aligned}n &= \frac{P \cdot V}{R \cdot T} \\ &\approx \frac{1.01325 \times 10^{5}\; {\rm Pa} \times 2 \times 10^{-3}\; {\rm m^{3}}}{8.31 \; {\rm m^{3} \cdot Pa \cdot mol^{-1} \cdot K^{-1}} \times 293.15\; {\rm K}} \\ &\approx 0.08\; \rm mol\end{aligned}\).

In other words, there is approximately \(2\; \rm mol\) of this gas in that \(V = 2\; \rm dm^{3}\).

The balanced chemical equation for the reaction is:

Au2S3 + 6H2 → 2Au + 3H2S

From the balanced equation, we can see that 2 moles of Au are produced for every mole of Au2S3 reacted. We can use this ratio to convert the mass of Au2S3 to the mass of Au produced.

First, we need to determine the number of moles of Au2S3:

molar mass of Au2S3 = 2(196.97 g/mol Au) + 3(32.06 g/mol S) = 498.04 g/mol

moles of Au2S3 = 337.75 g / 498.04 g/mol = 0.6776 mol

Now we can use the mole ratio to calculate the number of moles of Au:

moles of Au = 2 moles of Au2S3 × (0.6776 mol Au2S3) = 1.355 mol Au

Finally, we can convert the moles of Au to mass using the molar mass of Au:

molar mass of Au = 196.97 g/mol

mass of Au produced = moles of Au × molar mass of Au = 1.355 mol × 196.97 g/mol ≈ 267.1 g

Therefore, approximately 267.1 grams of gold will be produced.

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Answer: 26.07 g Zn if need to correct sig figs its 26 g Zn

Explanation:

use stoichiometry to solve

2.4 X 10^23 atoms Zn X (1mole Zn / 6.02 X 10^23 atoms Zn) X (65.38 g Zn/ 1 mole Zn) =

26.07 g Zn

Answer:

One Molecule of H2 is leftover, I mean seriously it's in the name NH3 the H3 in NH3 means 3 Hydrogen Molecules have been used making one molecule of hydrogen the answer.

Explanation:

If the maximum amount of \(NH_{3}\) is formed during the reaction, the leftover reactant will be one molecule of hydrogen (\(H_{2}\)).

Reduce the mass of additional reagent used from the overall mass of excess reagent provided to determine the amount of surplus reactant that is still present.

A chemical reaction would be a procedure that causes one group of chemical components to change chemically into another.

The reaction can be written as:

\(N_{2} +3H_{2}\) → \(2NH_{3}\)

It can be seen that in the reaction, by the combination of one mole of nitrogen combine with 3 moles of hydrogen and form 2 moles of ammonia, Hence, during the reaction one-mole hydrogen will be left.

Therefore, if the maximum amount of \(NH_{3}\) is formed during the reaction, the leftover reactant will be one molecule of hydrogen (\(H_{2}\)).

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A 30-day supply of Levoxyl at a dosage of one 13 μg tablet per day contains 0.39 mg of Levoxyl.

For a patient taking one 13 μg tablet of Levoxyl per day, the total amount of levothyroxine they are receiving is 13 micrograms. To calculate the total amount in a 30-day supply, we simply multiply this amount by 30.

13 μg/tablet x 1 tablet/day x 30 days = 390 μg

Note that the microgram (μg) is a unit of mass equal to one millionth of a gram, while the milligram (mg) is a unit of mass equal to one thousandth of a gram. To convert μg to mg, we divide by 1000:

390 μg / 1000 = 0.39 mg

Levoxyl is a medication used to treat hypothyroidism, a condition where the thyroid gland doesn't produce enough hormones to regulate the body's metabolism. The active ingredient in Levoxyl is levothyroxine sodium, which is a synthetic form of the hormone thyroxine (T4).

Levoxyl tablets are available in several strengths, ranging from 25 mcg to 300 mcg. The recommended dosage depends on the patient's age, weight, and the severity of their hypothyroidism. In general, adults with normal thyroid function usually require about 1.6 mcg of levothyroxine per kilogram of body weight per day.

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Here is the structure of alpha-ketoglutarate

     O

     ||

H3N--C--CH2--C--COO-

     |

  COOH

To draw the structure of alpha-ketoglutarate by glutamate dehydrogenase and being a precursor to the urea cycle, follow these steps:

1. Start with the backbone structure of a 5-carbon molecule, arranged in a linear chain.

2. At the first carbon (C1), attach a carboxyl group (COOH). Due to the pH of 7, the carboxyl group will lose a proton, forming a carboxylate ion (COO-).

3. At the second carbon (C2), attach a carbonyl group (C=O).

4. At the third carbon (C3) and fourth carbon (C4), attach hydrogen atoms.

5. At the fifth carbon (C5), attach another carboxyl group (COOH). Again, due to the pH of 7, this carboxyl group will lose a proton, forming a carboxylate ion (COO-).

Your resulting structure of alpha-ketoglutarate will have the following formula:

     O

     ||

H3N--C--CH2--C--COO-

     |

  COOH

This structure is generated in the reaction catalyzed by glutamate dehydrogenase and serves as a precursor to the urea cycle.

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When the room temperature spoon is placed in the hot cup of coffee, heat will flow from the coffee to the spoon until they reach thermal equilibrium, which means they have the same temperature. The spoon will increase in temperature, and the coffee will decrease in temperature.

When the cold cream from the refrigerator is added to the coffee and spoon mixture, heat will flow from the coffee and the spoon to the cream until they reach thermal equilibrium. This will cause the coffee and spoon to cool down further, while the cream will warm up until it reaches room temperature.

Overall, the spoon will start at room temperature and then increase in temperature until it reaches the temperature of the coffee. The coffee will start at a higher temperature and then decrease in temperature as it transfers heat to the spoon and then to the cream. The cream will start at a lower temperature and then increase in temperature until it reaches room temperature.

To be more specific, the transfer of heat between the spoon and the coffee will follow the first law of thermodynamics, which states that energy cannot be created or destroyed, but can only be transferred or converted from one form to another. In this case, heat energy is transferred from the coffee to the spoon until both reach the same temperature. The amount of heat transferred depends on the specific heat capacity of each material and the mass of each object.

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AgI will form in addition to the existing AgCl.

The addition of ammonium chloride solution to the silver-containing solution results in the formation of AgCl due to the reaction between silver ions and chloride ions. The reaction is given as follows:

Ag⁺ + Cl⁻ → AgCl

Next, the addition of potassium iodide solution to the same solution results in the formation of AgI due to the reaction between silver ions and iodide ions. The reaction is given as follows:

Ag⁺ + I⁻ → AgI

Since both reactions involve the same reactant (Ag⁺), the formation of AgI will occur simultaneously with the dissolution of AgCl. However, the extent of the dissolution of AgCl will depend on the solubility product of AgCl and the concentration of Ag⁺ ions in solution.

If the concentration of Ag⁺ ions in solution is high enough to exceed the solubility product of AgCl, then AgCl will dissolve completely to form Ag⁺ ions and Cl⁻ ions. In this case, the formation of AgI will occur in addition to the existing Ag⁺ ions in solution.

If the concentration of Ag⁺ ions is not high enough to exceed the solubility product of AgCl, then the formation of AgI will accompany the dissolution of AgCl until the concentration of Ag⁺ ions is high enough to exceed the solubility product of AgCl.

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The mass, in grams, of 5.90 mol \(C_6H_{12\) would be 495.6 grams.

The number of moles in a given amount of substance is the ratio of the mass of the substance and its molar mass.

The statement of the number of moles of substances can be mathematically expressed as follows:

Mole = mass/molar mass

Making molar mass the subject, the equation becomes:

Molar mass = mass/mole

Making mass the subject, the equation becomes:

Mass = mole x molar mass.

In this case, we are looking for the mass of a given mole of  \(C_6H_{12\).

C = 12 g/mol

H = 1 g/mol

Molar mass of \(C_6H_{12\) = (6x12) + (12x1)

                                   = 72 + 12

                                   = 84 g/mol

Hence:

Mass of 5.90 mol  \(C_6H_{12\) = 5.90 x 84

                                         = 495.6 grams

In other words, 5.90 mol of \(C_6H_{12\) would be equivalent to 495.6 grams of the compound.

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Answer: Fingerprints are not conclusive evidence on their own.

Explanation:

The thief could have worn gloves and those fingerprints could belong to the owners. If the fingerprints don't match those of the owners', you would still need more evidence to prove that those belong to the killer, such as their whereabouts at the time the vase was stolen, motive, etc. Fingerprints are not conclusive evidence on their own.

Answer

A

Explanation

letter a kase tama

The last third-party candidate to win one or more states was George Wallace of the American Independent Party in 1968.

Who was George Wallace?

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Answer:

gas because of the separation between the molecules.

Explanation:

Answer:

A = gas

Explanation:

Heres a trick you can use to remember if its a solid liquid or gas.

Solid= molecules that are tightly packed

Liquid= molecules that are slightly moving apart

Gas= molecules that are jumping like crazy

So in this case the answer would be a gas.

Hope this helps :)

Answer:

A replacement reaction occurs when elements switch places in compounds. This type of reaction involves ions. Generally, more reactive elements replace less reactive elements. A single replacement reaction occurs when one element replaces another element in one compound.

Explanation:

Just figured it out!

Answer: a double - replacement reaction

Explanation:

I just got it right on Apex

The volume occupied by a 21.8 g sample of osmium is approximately \(0.964 cm^3\).

The volume (in \(cm^3\)) occupied by a 21.8 g sample of osmium can be calculated using its density of \(22.6 g/cm^3\).

To find the volume, we can use the formula:

Volume = Mass / Density.

Plugging in the values, we have:

Volume = 21.8 g / \(22.6 g/cm^3\)

Now, dividing 21.8 g by \(22.6 g/cm^3\) gives us the volume in cm^3.

Calculating this, we get:

Volume = \(0.964 cm^3\)

So, a 21.8 g sample of osmium would occupy a volume of approximately \(0.964 cm^3\)

In conclusion, the volume occupied by a 21.8 g sample of osmium is approximately \(0.964 cm^3\)

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