how many molecules of h2s are required to form 79.0 g of sulfur according to the following reaction? assume excess so2.

Answer:

2220 Torr

Explanation:

Assuming constant temperature, we can solve this problem by using Boyle's law, which states that:

Where subscript 1 refers to the initial volume and pressure, while subscript 2 refers to the final state, meaning that in this case:

We input the data:

Answer:

Conduction

Explanation:

Conduction can be regarded as transfer of thermal energy which exist

between two or more objects that are in contact with each other. From the question, the spoon touches the hot liquid and heat is transferred to the spoon through conduction

The reason why Group A elements and Group B elements are different is that they belong to different categories in the periodic table. Group A elements, also known as the representative elements, are found in the s and p-blocks of the periodic table.

These elements have valence electrons in either the s or p orbitals, which makes them highly reactive and able to form a wide range of chemical compounds.

On the other hand, Group B elements, also known as the transition elements, are found in the d-block of the periodic table. These elements have valence electrons in the d orbitals, which gives them unique chemical and physical properties.

The main difference between Group A elements and Group B elements is that they belong to different categories in the periodic table. Group A elements are representative elements found in the s and p-blocks of the periodic table, while Group B elements are transition elements found in the d-block. The valence electrons of Group A elements are in the s and p orbitals, making them highly reactive and able to form a wide range of chemical compounds. Meanwhile, Group B elements have valence electrons in the d orbitals, giving them unique chemical and physical properties. The difference in their electron configurations gives rise to their distinctive characteristics.

In conclusion, the difference between Group A and Group B elements can be attributed to their location and electron configurations in the periodic table. Group A elements are representative elements found in the s and p-blocks, while Group B elements are transition elements found in the d-block. Their electron configurations give rise to their unique chemical and physical properties. Understanding these differences is important in chemistry as it allows scientists to predict the behavior and reactivity of different elements in chemical reactions.

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Water is constantly being cycled between the atmosphere, the ocean and the land. This cycling is a very important process that helps sustain life on Earth. When the sun heats water, the water evaporates or changes to water vapor. Water vapor rises and condenses or changes back into liquid water droplets.

"LEO the lion goes GER" means based upon the oxidation and reduction reactions.

Oxidation reactions are those reactions in which lossing of electrons are taking place from the substrate molecule and in reduction process gaining of electrons is done by substrate molecules.

The phrase "LEO the lion goes GER" is used in the context of oxidation and reduction reactions. Meaning of the terms:
LEO → Lose electrons = oxidation

GER → Gain electrons = reduction

Hence the given line is based on oxidation and reduction.

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Answer:

Leo: lose electron(s) = oxidation. Ger: gain electron(s) = reduction.

Explanation:

Answer: D

Explanation:

Answer:

Endothermic reactions are chemical reactions in which the reactants absorb heat energy from the surroundings to form products.

Answer:

Chemical reactions that absorb (or use) energy overall are called endothermic. In endothermic reactions, more energy is absorbed when the bonds in the reactants are broken than is released when new bonds are formed in the products.

Answer:

I would say 3 but I not exactly sure

Answer:

the heat wants to travel up. Heat rises

Explanation:

Answer:

solubility

Explanation:

the solid substances will be added to water to see which one is soluble

Answer:

Atom, Sub atomic particle, compound, molecule

Answer:

N=35%. so 35/100*7 =2.45%

H=5.0 so 5/100*1=0.05%

o=60% so 60/100*8=4.8%

Answer:

Law of constant composition

Answer:

trtytytytytytyt

Explanation:

The change in temperature of the metal is 6.1°C. Details about change in temperature can be found below.

The change in temperature of a substance can be calculated by subtracting the initial temperature of the substance from the final temperature.

According to this question, a 25.0 g sample of metal at 16.0 °C is warmed to 22.1 °C by 259J of energy.

This means that the change in temperature of the metal can be calculated as:

∆T = 22.1°C - 16°C

∆T = 6.1°C

Therefore, the change in temperature of the metal is 6.1°C.

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Answer: 6.1°C.

Explanation: just for some extra verification, the answer is indeed 6.1°C. Hope this helps and have a great day!

2H2O+O2--->2H2O2  

8.5 gm H2O2=0.25 mole  

hence H2O is also 0.25 mole i.e.4.5 gm  

O2is 0.125 mole i.e.4 gm

Answer:

subatomic particles are smaller then atoms

Answer:

120 kPa = 1.25 L

Explanation:

Because 120/1.50 is 80. And then if you divide 100 by 80, you get 1.25.

Answer:

Structure of boron trifluoride, an example of a molecule with trigonal planar geometry.

Examples: SO3

Coordination number: 3

Point group: D3h

Bond angle(s): 120°

HOPE ITS HELP

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\ \)

From the question

The mass of one brick is 50 g

the volume of one brick is 10 cm³

Since the student had 5 bricks

Total mass = 5 × 50 = 250 g

total volume = 5 × 10 = 50 cm³

So the total density is

\(density = \frac{250}{50} = \frac{25}{5} \\ \)

We have the final answer as

Hope this helps you

The work done by the isothermal compression of the gas is -666.7 J.

The work done by the compression of a gas in an isothermal process or at constant temperature  is given by the formula below:

Work done, W = nRT ln(Vf / Vi)

where;

From the data provided:

number of moles, n = 0.250 moles

Molar gas constant, R = 8.314 J/K/mol

Temperature, T = 292 K

Vf = 2.00 L

Vi = 6.00 L

W = 0.25 * 8.314 * 292 * ln(2/6)

Work done = -666.7 J

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The concentration of this acid in moles per litre : 17.41

Given

99.5% acetic acid

density=ρ=1.05 g/ml

Required

the concentration (mol/L)

Solution

99.5% dan density 1.05 g/ml (MW acetic acid = 60 g/mol)

\(\tt 99.5\%\times 1.05\dfrac{g}{ml}\times \dfrac{1000~ml}{L}=1044.75~g/L\\\\\dfrac{1044.75~g/L}{60~g/mol}=17.41~mol/L\)

By reversing the flow of electricity, the poles of an electromagnet may be reversed. As a result, the following statement is true.

An electromagnet is a magnet that uses electricity to operate. In contrast to a permanent magnet, the strength of an electromagnet may be readily altered by varying the amount of electric current flowing through it. By reversing the flow of electricity, the poles of an electromagnet can even be reversed.

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Answer:

8 meters

Explanation:

Hope it helps!! :):):):)):)::):)

Or 0.008 km

A double replacement reaction will occur is a precipitate is formed, or a gas is formed, or a solvent is formed.

Solvent is a substance that is capable of dissolving other substances, resulting in a homogeneous mixture. Solvents are used in many industrial and household processes, including cleaning, extraction, and purification. Common solvents include water, alcohols, ketones, acids, and bases. Solvents can be used to dissolve both organic and inorganic substances. They are often used to separate mixtures of different substances, as well as to dissolve and purify them. Some solvents are miscible with one another, while others are not. Solvents can also be used to dissolve and disperse solids in a liquid.

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The balanced equation using the half-reaction method is:

5 CH3OH + 2 MnO4- + 6 H+ → 5 CH3COOH + 2 Mn2+ + 2 K+ + 3 H2O

Generally, First, we need to identify the oxidation and reduction half-reactions:

Oxidation half-reaction:

5CH3OH + 6H+ + 2MnO4- → 5CH3COOH + 2Mn2+ + 8H2O

Reduction half-reaction:

3H2O + 2MnO4- + 10e- → 2Mn2+ + 12OH-

Next, we need to balance the half-reactions by adding water, hydrogen ions, and electrons:

Oxidation half-reaction:

5CH3OH + 6H+ + 2MnO4- → 5CH3COOH + 2Mn2+ + 8H2O + 10e-

Reduction half-reaction:

3H2O + 2MnO4- + 10e- → 2Mn2+ + 12OH-

Now we need to balance the electrons by multiplying the oxidation half-reaction by 5 and the reduction half-reaction by 2:

5CH3OH + 30H+ + 10MnO4- → 5CH3COOH + 4Mn2+ + 24H2O + 50e-

6H2O + 4MnO4- + 20e- → 4Mn2+ + 24OH-

The electrons cancel out when we add the two half-reactions together:

5CH3OH + 6H2O + 2MnO4- → 5CH3COOH + 2Mn2+ + 8H2O + 2K+ + 3H2O

Simplifying the equation, we get:

5CH3OH + 2MnO4- + 6H+ → 5CH3COOH + 2Mn2+ + 2K+ + 3H2O

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The balanced molecular equation for this reaction is

2HCl(aq) + Ba(OH)2(aq) ===> BaCl2(aq) + 2H2O(l).

The neutralization of hydrochloric acid and barium hydroxide.

Molecular formula for hydrochloric acid is HCl and barium hydroxide is Ba(OH)2.

Hydrochloric acid and barium hydroxide is aqueous in nature.

HCl have one H+ ion and barium hydroxide has two hydroxide (OH) group.

So, it will take two HCl to neutralize one Ba(OH)2.

Hence, equation for this reaction is

2HCl(aq) + Ba(OH)2(aq) ===> BaCl2(aq) + 2H2O(l).

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