Given the reaction below, how will the concentration of A change if the concentration of B decreases by 0.046 M?

3A(g)⇋B(g)+C(g)

Select the correct answer below:

-It increases by 0.138 M.

-It decreases by 0.015 M.

-It increases by 0.015 M.

-It decreases by 0.138 M.

Answer:

D. Ionic compound

Explanation:

Just based on my opinion

Correct me if I'm wrong tnx:<

Dihydrogen monoxide is a covalent compound. Option A is correct.

Covalent compounds are compounds that are held together by covalent bonds. Covalent bonds are formed when two atoms share electrons. In dihydrogen monoxide, the two hydrogen atoms share a pair of electrons with the oxygen atom. This forms a molecule of water, which is a covalent compound.

Ionic compounds are compounds that are held together by ionic bonds. Ionic bonds are formed when one atom donates electrons to another atom. In an ionic compound, the electrons are not shared, but are transferred from one atom to another. The molecular formula for dihydrogen monoxide is H₂O.

The difference between a molecular formula and an empirical formula is that the molecular formula shows the actual number of atoms of each element in a molecule, while the empirical formula shows the simplest ratio of the atoms of each element in a molecule. Option A is correct.

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Molecular orbital diagrams for ethane, ethene, and 2-bromobut-3-ene-1-ol are provided below.

Ethane consists of two carbon atoms bonded by a single sigma bond. Each carbon atom also has three hydrogen atoms bonded to it. The molecular orbital diagram for ethane shows that the sigma bonding molecular orbital (σ) is lower in energy than the antibonding molecular orbital (σ*). The sigma bonding molecular orbital is filled with two electrons, one from each carbon atom. The remaining four electrons occupy the sigma* antibonding molecular orbital. This electron configuration results in a stable ethane molecule.

Ethene, also known as ethylene, contains a double bond between two carbon atoms. The molecular orbital diagram for ethene shows two sets of molecular orbitals: sigma (σ) and pi (π) orbitals. The sigma bonding molecular orbital (σ) is lower in energy than the sigma* antibonding orbital (σ*). The pi bonding molecular orbital (π) is lower in energy than the pi* antibonding orbital (π*). The sigma bonding and pi bonding molecular orbitals are filled with two electrons each, resulting in a stable ethene molecule.

2-bromobut-3-ene-1-ol is a complex molecule with multiple functional groups. To provide an accurate molecular orbital diagram for this compound, additional information is required. The presence of a bromine atom, a double bond, and a hydroxyl group in different positions would influence the molecular orbital diagram. Please provide specific information about the molecule to generate an appropriate molecular orbital diagram.

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Answer:

Theory

Explanation:

The metal is (b) less active than aluminum but more active than tin

The metal strip has a greater activity than aluminum but a lower activity than tin. This is due to the fact that the metal strip developed a tin coating after being submerged in a tin (II) nitrate solution, which shows that tin ions in the solution were reduced and deposited onto the metal surface. The metal strip may be more reactive than tin, according to this.

However, there was no discernible reaction when the metal strip was submerged in an aluminum sulfate solution. This suggests that the metal strip is less reactive than aluminum because aluminum ions in the solution were not reduced or deposited onto it.

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The conjugate acid/base pairs in the reaction are HSO₃⁻ (aq) / H₂SO₃ (aq) and HCN (aq) / CN⁻ (aq).

In the given reaction, the species that can act as conjugate acid/base pairs are:

Therefore, the conjugate acid/base pairs in the reaction are:

HSO₃⁻ (aq) / H₂SO₃ (aq)

HCN (aq) / CN⁻ (aq)

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A physical change is a change in the physical properties of a substance, such as its shape, size, or phase, without changing its chemical composition.

One of the terms that represents a physical change only is "melting." When a solid substance melts, it changes from a solid state to a liquid state without undergoing any chemical reactions. The molecules in the solid substance absorb heat energy, causing them to vibrate faster and overcome their attractive forces, leading to the breaking of intermolecular bonds. As a result, the solid substance becomes a liquid, but its chemical composition remains the same. Other examples of physical changes include boiling, freezing, cutting, tearing, and crushing.

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a)  The impulse response is

u(t) - 2u(t-1) + u(t-2)

This is a causal system as it depends only on the present and past input values.

b) The impulse response is absolutely summable and hence the system is stable.

c) The system responses are

y1(t) = 2δ(t) - δ(t-2) - 2δ(t+2)

y2(t) = δ(t-1) - 2δ(t) + δ(t-2) - 2δ(t+1) + 4δ(t+2) - 2δ(t+3)

Given, the impulse responses of two LTI systems are as follows:

h1(t) = u(t+1) - u(t-3)

and

h2(t) = u(t) - 2u(t-1) + u(t-2)

(a) Causal systems are those which have their output dependent only on the present and past input values.

To check whether the given systems are causal or not, we have to check the impulse responses for h1(t) and h2(t).

For h1(t), the impulse response isu(t+1) - u(t-3)

It is not causal as the output for t < -1 will depend on the future input values.

For h2(t), the impulse response is

u(t) - 2u(t-1) + u(t-2)

This is a causal system as it depends only on the present and past input values.

(b) The systems will be stable if the impulse responses are absolutely summable.

For

h1(t),|h1(t)| = |u(t+1) - u(t-3)|
= 1 for t = 2, 3, ..., 4
= 0 elsewhere

∴ The impulse response is absolutely summable and hence the system is stable.

For h2(t)

|h2(t)| = |u(t) - 2u(t-1) + u(t-2)| = 1

for t = 2, 3
= 0 elsewhere

∴ The impulse response is absolutely summable and hence the system is stable.

(c) The response of the system to the input

x(t) = δ(t-1) - 2δ(t+1)

will be given by

y(t) = x(t) * h(t)

where, h(t) is the impulse response of the system

For h1(t), the impulse response is

h1(t) = u(t+1) - u(t-3)

Therefore,

y1(t) = x(t) * h1(t)

= (δ(t-1) - 2δ(t+1)) * (u(t+1) - u(t-3))
= δ(t) - δ(t-2) - 2δ(t+2) + 2δ(t)
= 2δ(t) - δ(t-2) - 2δ(t+2)

For h2(t), the impulse response is

h2(t) = u(t) - 2u(t-1) + u(t-2)

Therefore,

y2(t) = x(t) * h2(t)

= (δ(t-1) - 2δ(t+1)) * (u(t) - 2u(t-1) + u(t-2))
= δ(t-1) - 2δ(t) + δ(t-2) - 2δ(t+1) + 4δ(t+2) - 2δ(t+3)

The plots of the system responses are as follows:

Therefore, the system responses are

y1(t) = 2δ(t) - δ(t-2) - 2δ(t+2)

y2(t) = δ(t-1) - 2δ(t) + δ(t-2) - 2δ(t+1) + 4δ(t+2) - 2δ(t+3)

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Answer:

The molecular mass (MW=molar mass) for the chemical compound, NaCl is 58.443

Explanation:

Na being Sodium in the alkali metal group (1 valence electron) has a cumulative molecular mass of 22.990 mol., whereas Cl being Chlorine in the halogen group (7 valence electrons) has a cumulative molecular mass of 35.453. Therefore the sum of both molar masses (MW) is equivalent to 58.443  mol.

*Hope this helps.

Answer:

Chemistry is essential for meeting our basic needs of food, clothing, shelter, health, energy, and clean air, water, and soil. Chemical technologies enrich our quality of life in numerous ways by providing new solutions to problems in health, materials, and energy usage

Answer:

▪Why Is chemistry important in industry?

[Chemistry helps our industry produce more materials—such as paints, plastics, iron or steel, cement, kerosene, and also motor oil. Chemistry also helps farmers to enrich the soil with chemicals ... to grow fresh vegetables.] Chemistry is important, especially in household things like condoms, cleaning, and cooking.

▪10 Reasons Why Chemistry Is Important

➢Chemistry helps explain everything.

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This procedure of filtering barium sulfate out of water doesn't remove all of the barium ions from the water.

The balanced equation is

BaCl₂(aq) + K₂SO₄(aq) → BaSO₄(s) + 2KCl(aq)

The reaction consumes 1 mole of barium chloride. The reaction produces 1 mole of barium sulfate and 2 moles of potassium chloride. This type of reaction is an example of a double displacement reaction where mutual exchange of cation and anion takes place.

Since, the aqueous ions are too small to filter they are carried away with the filtrate solution, leaving behind the precipitate. So, Barium ions will still be present in the solution of water.

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Answer:

It's b

Explanation:

I had the same exact question

Answer:

\(V_2=1099.35mL\)

Explanation:

Hello there!

In this case, according to the given information, it is possible to infer that as both the amount of the gas and the pressure remains the same, we can solve this problem via the Charles' law a directly proportional relationship between the volume and temperature:

\(\frac{V_2}{T_2} =\frac{V_1}{T_1}\)

Thus, by solving for the final volume, V2, we obtain:

\(V_2 =\frac{V_1T_2}{T_1} \\\\V_2 =\frac{886mL*371K}{299K}\\\\V_2=1099.35mL\)

Best regards!

Answer:

14.007 amu

Explanation:

N-15 has 15 amu, while N-14 has 14 amu.

So average isotope mass = 15(0.7%) + 14(99.3%)

= 15(0.007) + 14(0.993)

= 0.105 + 13.902

= 14.007 amu

The balanced equation of the reaction is:

The precipitate formed is magnesium hydroxide.

The mass of precipitate produced is 0.58 g.

The concentration of the ions remaining in the solution are:

[Mg²⁺] = 0.05 M

[NO₃⁻] = 0.1 M

The balanced equation of the reaction of aqueous potassium hydroxide and aqueous magnesium nitrate is given below:

2 KOH (aq) + Mg(NO₃)₂ ---> Mg(OH)₂ (s) + 2 KNO₃ (aq)

Magnesium hydroxide is obtained as a precipitate in the reaction above.

The mass of precipitate produced is calculated as follows:

moles of KOH (aq) reacting = 0.200 * 100 / 1000 = 0.02 moles

moles of Mg(NO₃)₂ reacting = 0.2 * 100 / 1000 = 0.02 moles

From the equation of reaction, KOH is the limiting reagent.

Moles of precipitate formed = 0.02 / 2 = 0.01 moles

molar mass of Mg(OH)₂ (s) = 58 g/mol

Mass of precipitate formed = 0.01 * 58

Mass of precipitate formed = 0.58 g

Moles of Mg(NO₃)₂ remaining = 0.02 - 0.01 = 0.01 moles

total volume of solution = 200 mL or 0.2 L

The concentration of each ion remaining in the solution is as follows:

[Mg²⁺] = 0.01 / 0.2 = 0.05 M

[NO₃⁻] = 0.01 * 2 / 0.2 = 0.1 M

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The question requires us to calculate the mass, in grams, contained in 5.26 x 10^-4 mol of HC2H3O2.

To solve this question, first we need to calculate the molar mass of the compound, considering the number of atoms of each element, and then relate the value obtained with the number of moles given (5.26 x 10^-4 mol).

First, to calculate the molar mass of the compound, let's consider the following atomic masses:

atomic mass of C = 12.01 u

atomic mass of H = 1.007 u

atomic mass of O = 15.99 u

Next, we calculate the molar mass. To do that, we need to consider the number of atoms of each element: according to the chemical formula, there are 2 atoms of C, 4 atoms of H and 2 atoms of O:

molar mass (C2H4O2) = (2 * 12.01) + (4 * 1.007) + (2 * 15.99) = 60.03 g/mol

Now, we know that there are 60.03 g for each mol of the compound. With that information, we can estabilish the following relation to calculate the mass contained in 5.26 x 10^-4 mol of the compound:

1 mol --------------------- 60.03 g

5.26 x 10^-4 mol ----- x

Solving for x, we have:

Therefore, there are 0.03158 g of HC2H3O2 in 5.26 x 10^-4 mol of this compound.

Answer:

1. gas

2. false

Explanation:

Answer:

i dunno

Explanation:

me not smart

Answer:

A

Explanation:

makes the most sence srry if wront

Answer:

Hope this helps :D

Explanation:

Metal: Aluminum and Copper

Non-Metal: Hydrogen and Flourine

Acid: Sulfuric Acid and Phosphoric Acid

Alkali Metals: Hydrogen and Lithium

Compounds: Water and Carbon Dioxide

Elements: Carbon and Oxygen

This element is in the ground state, since all of the electrons are in the lowest available energy levels.The electron configuration provided is 1s²2s²2p⁶3s²3p⁶3d¹, which corresponds to the element potassium (K).  

The ground state of an atom is the most stable configuration, with all of the electrons in the lowest available energy levels.

This means that electrons in the ground state are closest to the nucleus and therefore have the least amount of energy. Excited states, on the other hand, have electrons in higher energy levels than the ground state.

For example, calcium (Ca) has an electron configuration of 1s²2s²2p⁶3s²3p⁶, and scandium (Sc) has an electron configuration of 1s²2s²2p⁶3s²3p⁶3d¹4s².

Therefore, the electron configuration provided does not correspond to either calcium or scandium, and is thus potassium in the ground state.

The element corresponding to the electron configuration 1s²2s²2p⁶3s²3p⁶3d¹ is potassium (K), and it is in the ground state.

All of the electrons are in the lowest available energy levels, making it the most stable configuration.  

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The events in the order of top to bottom for a digital recording to become sound waves through a speaker include:

This is defined as a pattern of disturbance caused by movement of energy along a medium.

The order of events which produces the sound heard by audience can be seen above.

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Answer:

Explanation:

I can help you

Answer:

There is 9.6 grams of CO2 produced

Explanation:

Step 1: Data given

Mass of methane = 5.50 grams

Molar mass of methane = 16.04 g/mol

Mass of oxygen = 13.9 grams

Molar mass of oxygen = 32.0 g/mol

Step 2: The reaction

CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)

Step 3: Calculate number of moles

Moles = mass / molar mass

Moles methane = 5.50 grams / 16.04 g/mol

Moles methane = 0.343 moles

Moles oxygen = 13.9 grams / 32.0 g/mol

Moles oxygen = 0.434 moles

For 1 mol CH4 we need 2 moles O2 to produce 1 mol CO2 and 2 moles H2O

O2 is the limiting reactant. It will completely react (0.434 moles).

There will react 0.434/2 = 0.217 moles CH4

There will remain 0.343-0.217 = 0.126 moles CH4

There will be produced 0.434 moles of H2O and

0.434/2 =0.217 moles of CO2

Step 4: Calculate mass of products

Mass = moles * molar mass

Mass CO2 = 0.217 moles ¨44.01 g/mol

Mass CO2 = 9.6 grams

Mass H2O = 0.434 moles * 18.02

Mass H2O = 7.8 grams

William's grandfather has dementia . They feed him, bathe him, and care for his daily needs. William and his family are serving as volunteer caregivers.

Dementia is a condition in which a person loses so much of their ability to think, remember, and reason that it makes it hard for them to do things they normally do. Certain individuals with dementia have no control over their feelings, and their characters might change.

Dementia is brought about by harm to synapses. The ability of brain cells to communicate with one another is disrupted as a result of this damage. At the point when synapses can't convey regularly, thinking, conduct and sentiments can be impacted.

There is at present no "fix" for dementia. In fact, there is unlikely to be a single treatment for dementia because it is caused by multiple diseases. Curing diseases that cause dementia, such as Alzheimer's, frontotemporal dementia, and dementia with Lewy bodies, is the goal of research.

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The option that would lead to the formation of precipitation, release of energy or change in color  is : Chemical change

Chemical changes leads to the formation of precipitate in the form of bubbles, release of energy or change in color for example :

Hence we can conclude that The option that would lead to the formation of precipitation, release of energy or change in color  is : Chemical change

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When helium compresses in volume with constant temperature, the entropy does not change.

Entropy is a measure of the degree of disorder or randomness in a system. In the case of helium compressing in volume with constant temperature, the system remains at a constant temperature throughout the process. Since entropy is related to the distribution of energy and the number of microstates available to a system, changes in volume alone, at constant temperature, do not alter the entropy.

When helium is compressed, its volume decreases, but the system does not experience any change in energy or temperature. The arrangement and distribution of helium atoms remain the same, and there is no increase or decrease in the number of possible microscopic states. As a result, the entropy remains unchanged.

Therefore, when helium compresses in volume with constant temperature, there is no change in entropy as long as the temperature remains constant.

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Under the same conditions of temperature and pressure, hydrogen (Hz) diffuses faster than oxygen (Oz).

This is because the rate of diffusion is inversely proportional to the molar mass of the gas. Since the molar mass of hydrogen is much smaller than that of oxygen, it can move through the pores or gaps in a medium at a faster rate, resulting in faster diffusion. The lighter the gas molecule, the faster it can move and the greater its kinetic energy.

Therefore, hydrogen molecules can diffuse through a medium more quickly than oxygen molecules, even when they are both at the same temperature and pressure.

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Answer:

do you mean DeF?

Explanation: