50.0 g N204 (92.02 g/mol) react with 45.0 g N2H4 (32.05 g/mol) forming nitrogen gas, N2
(28.01 g/mol) and water, H20 (18.02 g/mol). What mass in grams of excess-reactant is
left over?

Answer:

group 17 the halogen.as it has 7 electron in its outermost ring

The relationship between a reaction's products and reactants with regard to a certain unit is expressed by the equilibrium constant, K.

Thus, When a reaction is homogeneous, all of the products' and reactions' states of matter are the same (the prefix "homo" means "same"). The solvent typically controls the reaction's overall state of matter.

When a reaction is in chemical equilibrium, the concentrations of the reactants and products do not significantly fluctuate over time. A double arrow between the reactants and products denotes these reversible reactions.

As described, this reaction is endothermic, therefore when heat is added, the equilibrium constant moves to the right.  In turn, this turns the solution blue.  Cl- is drawn out of solution by the addition of AgNO3.

Thus, The relationship between a reaction's products and reactants with regard to a certain unit is expressed by the equilibrium constant, K.

Learn more about K expression, refer to the link:

https://brainly.com/question/4770891

#SPJ1

The ideal gas law may be used to determine the volume of oxygen created in the electrolysis that produces 548 litres of hydrogen at STP (Standard Temperature and Pressure). PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature, according to the ideal gas equation.

The pressure is 1 atm, the temperature is 273 K, and the number of moles of hydrogen is 548/22.4 = 24.5 in this example. We may compute the volume of oxygen created by rearranging the ideal gas law: V = nRT/P = 24.5*0.082*273/1 = 483.3 litres.

As a result, the volume of oxygen created in the electrolysis at STP that produces 548 litres of hydrogen is 483.3 litres.

Learn more about  oxygen at:

https://brainly.com/question/2272415

#SPJ1

Answer:

A. The remains or impression of a prehistoric organism preserved in a petrified form or as a mold or cast in a rock

Explanation:

A.the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock

Explanation:

Avogadro's number represents the number of units in one mole of any substance. Avogadro's number is equal to 6.022 * 10^23.

That means that 1 mol of hydrogen peroxide molecules will contain 6.022 *10^23 molecules.

Answer: a) 6.02 * 10^23

31.7 g of water formation in the given reaction releases 783.02 kJ of heat energy.

The change in heat in the given equation is -890.8 kJ/mol. This means that when one mole of CH4 reacts with 2 moles of O2, it produces one mole of CO2 and 2 moles of H2O while releasing 890.8 kJ of heat energy.Now, we have to find out how much heat energy will be released when 31.7 g of water is formed. To do this, we need to first calculate the number of moles of water formed from 31.7 g of H2O.Molar mass of H2O = 2 × 1.008 + 15.999 = 18.015 g/molNumber of moles of H2O = 31.7 g / 18.015 g/mol = 1.759 molNow we know that 2 moles of H2O are formed when 1 mole of CH4 reacts. Therefore, the number of moles of CH4 required to produce 1.759 mol of H2O will be:1 mole of CH4 : 2 moles of H2Ox moles of CH4 : 1.759 moles of H2Ox = 1.759/2 = 0.8795 molSo, 0.8795 moles of CH4 are required to produce 1.759 moles of H2O. And the heat released during the reaction of 0.8795 mol CH4 can be calculated using the given change in heat.ΔH = -890.8 kJ/molHeat released during the reaction of 0.8795 mol CH4= ΔH × number of moles= -890.8 kJ/mol × 0.8795 mol= -783.02 kJ.

for more questions on heat

https://brainly.com/question/30738335

#SPJ8

The partial pressure of hydrogen in the collected gas sample is 733.0 mm Hg (calculated by subtracting the partial pressure of water, 17.0 mm Hg, from the total atmospheric pressure, 750.0 mm Hg).

When a gas is collected over water, the presence of water vapor affects the total pressure observed. In this case, the total atmospheric pressure is given as 750.0 mm Hg, and the partial pressure of water vapor at 19.5°C is 17.0 mm Hg.

To determine the partial pressure of hydrogen, we need to subtract the partial pressure of water vapor from the total atmospheric pressure. Partial pressure refers to the pressure exerted by an individual gas component in a mixture. In this scenario, the collected gas is primarily hydrogen, with water vapor being the other component.

By subtracting the partial pressure of water vapor (17.0 mm Hg) from the total atmospheric pressure (750.0 mm Hg), we can find the partial pressure of hydrogen:

Partial pressure of hydrogen = Total atmospheric pressure - Partial pressure of water vapor

Partial pressure of hydrogen = 750.0 mm Hg - 17.0 mm Hg

Partial pressure of hydrogen = 733.0 mm Hg

Therefore, the partial pressure of hydrogen in the collected gas sample is 733.0 mm Hg.

Know more about hydrogen here:

https://brainly.com/question/24433860

#SPJ8

Answer:

Explanation:

40/ 180.2 x (-16 / 1 mole glucose)=-3.6 KJ

The substance known as "desflurane," a halogenated ether, is frequently used as an anesthetic.

One of the more popular anesthetic gases, nitrous oxide has been in use for about 200 years. This substance, in contrast to several other anesthetics, can be used to both cause unconsciousness and manage pain. Compared to ether, chloroform is more poisonous and strong.

General anesthesia is most frequently used for major operations, such as knee and hip replacements, heart surgeries, and many sorts of surgical procedures to cure cancer, even though there are many different types and degrees of anesthetic drugs to keep you from feeling pain during surgery.

To know more about anesthetic substance visit:-

https://brainly.com/question/16613107

#SPJ1

Explanation:

hope it helps you

have a good day please mark me as brain list ☺️ sorry for picture

Hypothesis is a proposed explanation for an observable phenomenon. The term comes from the Greek word for "to suppose." Variables, on the other hand, are anything that can be changed or measured. Variables can be independent, dependent, or control variables. Learning activities titled “Hypothesis”, “Variables and Hypothesis” and “Constructing a Hypothesis” share similarities and differences with a question that comes in response to an observation and a scientific research question.

For such more question on Hypothesis

https://brainly.com/question/606806

#SPJ8

The two atoms must have equal and opposite charges.

An atom is the smallest component of an element and the building block of all matter, characterized by sharing of the chemical properties of the element and a nucleus with neutrons, protons, and electrons.

A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds.

The bond may result from the electrostatic force between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds.

Hence, the two atoms must have equal and opposite charges.

Learn more about atoms here:

https://brainly.com/question/1566330

#SPJ2

There are numerous ways to determine whether lead is present in an ore. Atomic absorption spectroscopy is a popular approach. With this method, an ore sample is dissolved in acid and then atomized in a flame or plasma.

The sample's atoms will absorb light at particular wavelengths that are peculiar to the element under investigation. The amount of light absorbed can be used to calculate how much lead is present in the sample. Inductively coupled plasma mass spectrometry and X-ray fluorescence spectroscopy are further techniques. It is crucial to remember that these procedures call for specialized tools and training, thus they ought to only be carried out in a lab by qualified experts.

To know more about spectrometry, here

brainly.com/question/31075363

#SPJ1

Answer:

Explanation:

The end product of Photosynthesis is glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.

The other nuclide formed in this reaction U-236.

The other nuclide formed in this reaction is not directly specified, but we can infer it using the principle of conservation of nucleons and charge.

The nucleus of U-235 has 92 protons and 143 neutrons, while the nucleus of Sb-125 has 51 protons and 74 neutrons. When U-235 absorbs a neutron, the resulting nucleus has a mass number of 236 (235 + 1 neutron) and a charge of 92 (since neutrons are uncharged).

To produce Sb-125 as a product, the resulting nucleus must undergo beta decay by emitting an electron (e-) and an antineutrino (), which converts one of its neutrons into a proton:

n + U-235 → U-236* → Sb-125 + 4n + e- +

The resulting nucleus is U-236*, which denotes an excited state of U-236. This state is metastable, meaning it has a longer half-life than other states of the same nucleus. U-236* promptly emits four neutrons to stabilize itself, releasing a total of five neutrons:

n + U-235 → U-236* → Sb-125 + 4n + e- +

            ↓

         4n + U-236 + energy

Therefore, the equation for this reaction is:

n + U-235 → Sb-125 + X + 4n + e- + + energy

where X denotes the other nuclide formed, which is U-236.

for more such questions on reaction

https://brainly.com/question/24795637

#SPJ8

Answer:

I believe that would be methane! I hope this helps you!

Answer:

methane

Explanation:

The largest component of natural gas is methane, a compound with one carbon atom and four hydrogen atoms (CH4). Natural gas also contains smaller amounts of natural gas liquids (NGL, which are also hydrocarbon gas liquids), and nonhydrocarbon gases, such as carbon dioxide and water vapor.The main component in natural gas is methane. It also has ethane, propane, butane, hydrocarbons.

Nadia will take 8 seconds to reach her friend's house.

Speed is the measure of the distance traveled by an object per unit of time. It is a scalar quantity and is typically expressed in units such as meters per second (m/s), miles per hour (mph), or kilometers per hour (km/h).

To calculate the time Nadia will take to reach her friend's house, we can use the formula;

time = distance / speed

where distance is the amount of space traveled by an object, and time is the duration of travel.

Put the values given in the problem, we have:

time = 24 meters / 3 m/s

time = 8 seconds

Therefore, Nadia will take 8 seconds.

To know more about time here

https://brainly.com/question/15356513

#SPJ1

Explanation:

Heat is a measure of change, never a property possessed by an object or system.

Therefore, it is classified as a process variable.

Temperature describes the average kinetic energy of molecules within a material or system and is measured in Celsius (°C), Kelvin(K), Fahrenheit (°F), or Rankine (R).

Heat and temperature are two different quantities but they do rely on each other.

Answer:

Voltage is the measure of electric potential energy per unit charge, current is the flow of electric charge through a circuit, and resistance is the property of a material that opposes the flow of electric current.

Ohm's Law relates these three concepts by stating that current is directly proportional to voltage and inversely proportional to resistance.

Hope this helps!

Answer:

The correct answer is - 0.570 grams

Explanation:

The balanced chemical reaction is given by

Cu(NO3)2(aq)     + 2NaOH(aq)    -------->    Cu(OH)2(s)      + 2NaNO3(aq)

        1.0 mole            2.0 mole                 1.0 mole          2.0 mole

number of mol of Cu(OH)2,

n = Molarity * Volume

= \(35.0*0.167 = 5.845\) millimoles

As clear in the equation, 1 mole of Cu(NO3)2 gives 1 mole of Cu(OH)2 , So, 5.845 millimoles of Cu(NO3)2 will produce 5.845 millimoles of Cu(OH)2

Mass of Cu(OH)2 = number of mol * molar mass

= \(97.5*5.845*10^-3\)

= 0.570 grams

Thus, the correct answer is - 0.570 grams

Explanation:

The location of a body with reference to a given point.

Answer:

Ni(NO3)2 is the limiting reactant.

Explanation:

- First, we balance the equation...

Ni(NO3)2 + 2 KOH --->  2 KNO3 + Ni(OH)2

- Second, we find the moles of each substance...

65g Ni(NO3)2 / 182.703g Ni(NO3)2 = 0.356 mol Ni(NO3)2

58g KOH / 56.1056g KOH = 1.034 mol KOH

- Third, to make the molar ratio equal to each other for comparison, we either multiply KOH by 1/2 or multiply Ni(NO3)2 by 2 to compare the number of moles; because the Ni(NO3)2 to KOH molar ratio is 1 to 2. Note that the multiplication of moles is only for comparison. We do not use these multiplied values. We use the values from step 2...

0.356 mol Ni(NO3)2 * 2 = 0.712 mol Ni(NO3)2

0.712 mol Ni(NO3)2 < 1.034 mol KOH ... Ni(NO3)2 is the limiting reactant.

Answer:

Volume of the reaction vessel is increased - shift to the left

The reaction is cooled down - shift to the right

H2 is added to the system - shift to the right

The pressure of the system is decreased - shift to the left

A catalyst is added to the system - no change

Water is removed from the system - shift to the right

Explanation:

When a constraint such as a change in temperature, pressure or volume is imposed on a reaction system in equilibrium, the equilibrium position will shift in such a way as to annul the constraint.

When the volume of a reaction system is increased, the equilibrium position shifts in the direction in which there is the highest total volume. This is the left hand side.

Since the reaction is exothermic (heat is given out) when the reaction is cooled down, the forward reaction is favoured.

Adding of reactants shifts the equilibrium position to the right hand side hence when H2 is added, the equilibrium position shifts to the right.

Decreasing the pressure shifts the equilibrium position to the direction of higher total volume hence the equilibrium shifts to the left when pressure is decreased.

A catalyst has no effect on the equilibrium position. It increases the rate of forward and reverse reaction to the same extent hence the equilibrium position is unaffected.

Removal of water from the system increases the rate of forward reaction since a product is being removed from the reaction system.

Allene (1,2-propadiene) has point group D2d, itself is achiral because it has two planes of symmetry. ... An allene with substituents on one terminal carbon atom are unlike and substituent on other terminal carbon atoms are same, allene will be achiral. It will have one symmetry plane.

Hope this helped :)

The pressure of the gas at the new volume and temperature is the unknown.

Using the general gas law:

P1V1/T1 = P2V2/T2

Where

Thus, the unknown is the final pressure, which is P2.

More on gas law can be found here: https://brainly.com/question/1190311

Answer

B. When bonds are formed, energy is released.

Explanation

The breaking of chemical bonds never releases energy to the external environment. However, energy is only released when chemical bonds are formed.

Therefore the only true statement about energy and bonds in the given options is:

B. When bonds are formed, energy is released.

Answer:

I think it is C

Explanation:

I hope this helps

Answer:

The third option

Explanation:

Heat is considered a form of energy existing as the result of the random motion of molecules and is the form of energy that is transferred between bodies as a result of their temperature difference

Work can be totally transformed into heat (for example, by friction), whereas heat can only be partially converted into work.

A model is a depiction of something that is frequently too difficult to directly observe or display. Although experimental testing validates a model, it is only accurate in explaining specific characteristics of a physical system.

Work is defined as the transfer of energy to or from a system by any means other than heat.

A transfer of energy to or from a system by any means other than heat is called “work”. Work can be completely converted into heat (by friction, for example), but heat can only be partially converted to work. The Second Law of Thermodynamics, states that the complete conversion of heat into work is impossible.

Heat transmission in materials can be described using the kinetic particle model. Heat energy always travels from a high-temperature zone to a low-temperature region.

Thus, heat can do work by constructing a model.

To learn more details about heat here:

brainly.com/question/1429452

#SPJ1