For the reaction 2HNO3 + Mg(OH)2 → Mg(NO3) 2 + 2H2O, how many grams of magnesium nitrate are produced from 6 grams of nitric acid, HNO3 ?

Round your answer to the nearest tenth. Do not round your answers until the last step of the problem. If you do, the computer might mark your answer incorrect and you will be asked to complete your second trial for this assessment.

Use the following molar masses:

Element Molar Mass
Hydrogen 1
Magnesium 24
Nitrogen 14
Oxygen 16

Answer:I think it's Geosphere

Explanation:

Answer:

A

Explanation:

Geo means rock, or earth. Hydro means water, Atmosphere is space, and Bio global ecosystem composed of living organisms

Answer:

How do amoeba respire.

How do plants respire.

Answer:

its the stamen, it also supports the Anther.

Answer:

The Stamen

Explanation:

The stamen is a slender filament supporting the anther, it is what produces and holds pollen in flowers.

The required partial pressure of argon gas present in the mixture is 1.02 atm.

Dalton's law of gas states that total pressure of any mixture of gas is sum of the partial pressure of all the gases present in that mixture.

Given that,

Total pressure of mixture = 2.4 atm

Partial pressure of argon = ?

Partial pressure of oxygen = 128 mmHg = 0.168 atm

Partial pressure of helium = 167.5 mmHg = 0.220 atm

Partial pressure of neon = 760 mmHg = 1 atm

On putting all these values according to the definition we get the partial pressure of argon gas as:
Partial pressure of argon = 2.4 - (0.168 + 0.22 + 1) = 1.02 atm

Hence required partial pressure of argon gas is 1.02 atm

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Answer:

The answer is 1.63 × 1024 atoms Fe

Explanation:

The statement, that describes the atoms of Iron is "4.215 × \(10^{23}\) atoms."

The fundamental building block of chemistry is the atom. It is the smallest ordinary matter unit that makes up a chemical element.

The number of atoms in a volume of any substance is given by No of atoms = N * (density) * volume / (Molecular Weight).

N is an Avogadro's number constant equal to 6.022 ×\(10^{23}\) atoms/mole.

1 mole of Fe will be of 6.022 × \(10^{23}\) atoms

Then,= 0.70 mol × 6.022 × \(10^{23}\) atoms  = 4.215 ×\(10^{23}\) atoms

As a result, 0.70 mol of iron contains 4.215 × \(10^{23}\) atoms.

Hence, the correct option is 4.215 × \(10^{23}\)atoms.

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The final volume of the ladybug's prison is approximately 0.4 liters.

To determine the final volume of the ladybug's prison, we can use Boyle's Law, which states that the pressure and volume of a gas are inversely proportional at constant temperature. The equation for Boyle's Law is:

P1 * V1 = P2 * V2

Where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume, respectively.

In this scenario, the initial volume (V1) is given as 0.5 L, and the initial pressure (P1) is 1 atm. The final pressure (P2) is 1.25 atm. We need to find the final volume (V2).

Plugging the given values into the equation, we have:

1 atm * 0.5 L = 1.25 atm * V2

Simplifying the equation, we find:

0.5 L = 1.25 atm * V2

Dividing both sides of the equation by 1.25 atm, we get:

0.5 L / 1.25 atm = V2

V2 ≈ 0.4 L

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Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore, value of the gas constant R is 0.0821LatmK⁻¹ when volume is 0.0413 L.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature.

Mathematically the relation between Pressure, volume and temperature can be given as

PV=nRT

where,

P = pressure of nitrogen gas = 0.991 atm

V= volume of nitrogen gas =0.0413 L

n =number of moles of nitrogen gas = given mass ÷Molar mass

                                                          =0.0451 g ÷28

                                                          =0.0016mol

T =temperature of nitrogen gas =298 K

R = Gas constant =?

0.991 atm×0.0413 L=0.0016×R×298 K

R=0.0821LatmK⁻¹

Therefore, value of the gas constant R is 0.0821LatmK⁻¹.

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Answer:

V= n/M

Explanation:

From;

π = nRT/V = MRT

Where;

n= number of moles

R= gas constant

T= absolute temperature

M= molar mass

V= volume of the solution

π= osmotic pressure

Thus;

nRT/V = MRT

nRT = VMRT

V= nRT/MRT

V= n/M

Answer:

Pressure

Explanation:

Answer:

The solubility of a gas in a liquid would be increased by an increase in its pressure. Thus, Option D is correct.

Explanation:

According to Henry's law: The solubility of a gas in a liquid is directly proportional to the pressure of that gas above the surface of the solution.

Thus, as the pressure increases the solubility will also increase.

839 g is the mass of sodium aluminate that is required to produce 2.59 kg of  Na₃AlF₆.

A body's mass is an inherent quality. Prior to the discoveries of the atom as well as particle physics, it was widely considered to be tied to the amount of material in a physical body.

It was discovered that, despite having the same quantity of matter in theory, different atoms and elementary particles have varied masses. There are various conceptions of mass in contemporary physics that are theoretically different but physically equivalent.

Moles of Na₃AlF₆ = 2150 × 1/209.94    

Moles of Na₃AlF₆ = 10.24 mol Na₃AlF₆

The molar ratio is 1 mol NaAlO₂:1 mol Na₃AlF₆

Moles of NaAlO₂ = 10.24 × 1/1 = 10.24 mol NaAlO₂

Mass of NaAlO₂ = 10.24 × 81.97          

Mass of NaAlO₂ = 839 g

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Explanation:

Carbon-14 has a half life of 5730 years, meaning that 5730 years after an organism dies, half of its carbon-14 atoms have decayed to nitrogen atoms. Similarly, 11460 years after an organism dies, only one quarter of its original carbon-14 atoms are still around.

Answer:

A hypothesis can be tested and accurately evaluated using different types of data collection, such as experiments that aim to produce a quantifiable or observable reaction, trials that replicate experiments to test their effectiveness (such as medication trials), or other methods of data collection.

Explanation:

There are no predetermined standards for observational evidence, often known as "empirical evidence," in matter science, other than the fact that it is helpful. The standards have evolved over time, just as science itself has. In fact, science only began to be effective with the advent of observation and test by observation.

Utilizing the century-old but still relevant notion of observation as a statistical hypothesis test, like any other hypothesis test, against observed parameters is one method to arrange observational data. A basic model like this may be used to deduce many things, but for our needs we can extract the following criteria (Iredia has previously addressed some of them):

For each science and type of test, a different quality criterion is used to evaluate the uncertainty sigma factor. But broadly speaking, consider this comparison:

It is useful as long as we maintain above 50% uncertainty with some degree of repeatability.

Thank you,

Eddie

Answer:

they're

Explanation:

solid, liquid and gas

Answer:

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to draw this Lewis dot structure by firstly realizing P has five valence electrons and F has seven because they are in groups VA and VIIA respectively, which means that the central atom is P with three F atoms around it as shown on the attached.

Also notice each fluorine atom has three lone pairs as their atoms just need one bond to complete the octet and the P atom has one lone pair as it needs three bonds to complete it.

Regards!

The lattice energy of MX is 459.2 kJ/mol.

The lattice energy (ΔH° lattice) of an ionic compound is the energy released when one mole of the solid is formed from its constituent gaseous ions under standard conditions. The lattice energy is calculated using the Born-Haber cycle, which involves several steps including atomization, ionization, dissociation, and sublimation energies.

The lattice energy is related to the Coulombic attraction between the oppositely charged ions in the solid. To calculate the lattice energy for MX, we can use the following equation:

ΔH° lattice = ΔH° sub + ΔH° ion + ΔH° diss + ΔH° formation

where ΔH° sub is the sublimation energy of M(s), ΔH° ion is the first ionization energy of M(g), ΔH° diss is the dissociation energy of X2(g), and ΔH° formation is the enthalpy of formation of MX(s).

Using the given data, we can calculate each of these values and substitute them into the equation to obtain the lattice energy. The final answer should be in units of kJ/mol.

ΔH° sub (M) = 107.3 kJ/mol

ΔH° ion (M) = 577.5 kJ/mol

ΔH° diss (X2) = 242 kJ/mol

ΔH° formation (MX) = -467.6 kJ/mol

ΔH° lattice = 107.3 + 577.5 + 242 + (-467.6) = 459.2 kJ/mol

As a result, MX has a lattice energy of 459.2 kJ/mol.

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The amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C is 33,440 Joules.

To find the amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C, we can use the equation Q = mcAT.
First, we need to find the value of m, which is the mass of the water in grams. In this case, it is given as 200 grams.
Next, we need to find the value of AT, which is the change in temperature in degrees Celsius.

This can be calculated by subtracting the initial temperature from the final temperature, which gives us 60 C - 20 C = 40 C.
The specific heat capacity of water, C, is given as 4.18 Joules per gram per degree Celsius.
Now we can plug in the values into the equation:
Q = mcAT
Q = (200 g) x (4.18 J/g°C) x (40°C)
Q = 33,440 J
Therefore, the amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C is 33,440 Joules.

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Answer:

The final temperature of the water when measuring the food sample is: The temperature of the water when the food sample has finished burning completely.

Explanation:

When measuring the food sample in energy and specific heat lab, it is pertinent to note that there is an initial temperature and even while still burning, the temperature gradually increases. But since we are dealing with final, temperature, what we need is basically the final temperature of the water when the food has finished burning. This is so because that's the final temperature of the water as once the food sample has finished burning and you turn off the heat source, the temperature will start to gradually reduce from then on.

A scientific method is a systematic approach to solving problems by collecting data, formulating hypotheses, and testing those hypotheses through experimentation.

Out of the options provided, (d) "Apple tree is not producing apples" is an example of a problem that could be solved using the scientific method.

To solve this problem, we can follow the scientific method by first making observations and gathering data on the apple tree's environment, such as the amount of sunlight, water, and nutrients it receives. Next, we can formulate a hypothesis, such as the lack of pollination or nutrient deficiency, and design experiments to test this hypothesis.

The experiments may involve changing the conditions of the apple tree's environment, such as adding nutrients or pollinating the tree, and observing the results. By collecting and analyzing the data from these experiments, we can come to a conclusion and make recommendations for how to improve the apple tree's productivity.

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Answer:

  -172.6 °C

Explanation:

You want to know the Celsius equivalent of the temperature 100.6 K.

The relation is ...

  C = K - 273.15

  C = 100.6 -273.15 = -172.55

The temperature is -172.55 °C, about -172.6 °C.

__

Additional comment

We have rounded to tenths, because that is precision of the temperature given. If you use 273 as the conversion constant, you will get -172.4.

Answer: The magnetic orientation of rocks may change in Location A and subduction occurs in Location B. I tried my best

Happy To Help ;)

Explanation:

Answer:

It is C!! Hope this helps!!

Explanation:

I got it correct on the test

A balanced equation obeys the law of conservation of mass. According to law of conservation of mass, the mass can neither be created nor be destroyed.

The chemical equation in which the number of atoms of reactants and products on both sides of the equation are balanced is defined as the balanced chemical equation.

The combustion of methane result in the evolution of heat, CO₂, and H₂O.

CH₄ + 2O₂ → CO₂ + 2H₂O + 890 kJ

Here the number of 'C', 'O' and 'H' are equal on both sides of the equation.

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Answer:

λ = 0.58×10⁻⁶ m

Explanation:

Given data:

Wavelength of yellow light = ?

Frequency of yellow light = 5.09 ×10¹⁴ s⁻¹

Solution:

Formula:

Speed of light = frequency  ×   wavelength

Speed of light = 3×10⁸ m/s

by putting values,

3×10⁸ m/s = 5.09 ×10¹⁴ s⁻¹  × λ

λ = 3×10⁸ m/s / 5.09 ×10¹⁴ s⁻¹

λ = 0.58×10⁻⁶ m

Taking into account the definition of wavelength, frecuency and propagation speed, the wavelength of the yellow light is 5.89×10⁻⁷ m.

Wavelength is the minimum distance between two successive points on the wave that are in the same state of vibration. It is expressed in units of length (m).

Frequency is the number of vibrations that occur in a unit of time. Its unit is s⁻¹ or hertz (Hz).

The propagation speed is the speed with which the wave propagates in the medium, that is, it is the magnitude that measures the speed at which the wave disturbance propagates along its displacement.

The propagation speed relate the wavelength (λ) and the frequency (f) inversely proportional using the following equation:

v = f * λ

All electromagnetic waves propagate in a vacuum at a constant speed of  3x10⁸ m/s, the speed of light.

In this case, you know:

Replacing:

3x10⁸ m / s= 5.09×10¹⁴ Hz× λ

Solving:

λ= 3×10⁸ m/s ÷ 5.09×10¹⁴ Hz

λ=5.89×10⁻⁷ m

In summary, the wavelength of the yellow light is 5.89×10⁻⁷ m.

Learn more:  

Answer:

\(P_2=795mmHg\)

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to calculate the final pressure by using the Boyle's law as an inversely proportional relationship in pressure to volume at constant temperature:

\(\frac{P_2}{V_2} =\frac{P_1}{V_1}\)

Thus, we solve for our target, P2, to obtain:

\(P_2=\frac{P_1V_2}{V_1} =\frac{770mmHg*603mL}{584mL}\\\\P_2=795mmHg\)

Regards!

Answer:

Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO

Explanation:

The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.

The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.

The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.

The methyl groups are non-polar and do not have any significant reactivity.

The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.

The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.

Answer:

AZ₂

Explanation:

The formed compound will not contain Q because mass percentages, %A and %B, form 100% of the compound.

Steps

Solving

Answer:

"0.053457 M" of sulfuric acid.

Explanation:

The given values are:

\(V\) = 10 mL solution

\(V_{added}\) = 12.20 mL

\(V_{total}\) = 22.20 mL

then,

M 0.103 M of NaOH,

\(V_{rinsed}\) = experiment  will not be affected

\(V_{total \ base}\) = 10.38 mL

Now,

⇒  mol of NAOH = MV

                            = \(0.103\times 10.38\)

                            =  \(1.06914 \ m\)

Whether Sulfuric acid, then

⇒  \(H_{2}SO_{4} + 2NaOH = Na_{2}SO_{4} + 2H_{2}O\)

⇒  \(mol \ of \ acid =\frac{1}{2}\times \ mol \ of \ base\)

⇒  \(1.06914 \ m \ mol \ of \ base = \frac{1}{2}\times 1.06914 = 0.53457 \ m \ mol \ of \ acid\)

Before any dilution:

\(V_{sample} = 10 \ mL\)

⇒  \(M \ acid = \frac{m \ mol}{V}\)

                 \(=\frac{ 0.53457 }{10}\)

                 \(=0.053457 \ M\) (Sulfuric acid)

Answer:

The  change in entropy in the system is -231.5 J/K

Explanation:

Step 1: Data given

The normal boiling point of ethanol (C2H5OH) is 78.3 °C = 351.45 K

The molar enthalpy of vaporization of ethanol is 38.56 kJ/mol = 38560 J/mol

Mass of ethanol = 97.2 grams

Pressure = 1 atm

Step 2: Calculate the entropy change of vaporization

The entropy change of vaporization = molar enthalpy of vaporization of ethanol / temperature

The entropy change of vaporization = 38560 J/mol / 351.45 K

The entropy change of vaporization = -109.72 J/k*mol

Step 3: Calculate moles of ethanol

Moles ethanol = mass / molar mass ethanol

Moles ethanol = 97.2 grams / 46.07 g/mol

Moles ethanol = 2.11 moles

Step 4: Calculate  change in entropy

For 1 mol = -109.72 J/K*mol

For 2.11 moles = -231.5 J/K

The  change in entropy in the system is -231.5 J/K