How many moles of Cu2S can be formed from 11 moles of HCl?

Answer:

The properties of liquids are intermediate between those of gases and solids, but are more similar to solids. In contrast to intramolecular forces, such as the covalent bonds that hold atoms together in molecules and polyatomic ions, intermolecular forces hold molecules together in a liquid or solid. Intermolecular forces are generally much weaker than covalent bonds. For example, it requires 927 kJ to overcome the intramolecular forces and break both O–H bonds in 1 mol of water, but it takes only about 41 kJ to overcome the intermolecular attractions and convert 1 mol of liquid water to water vapor at 100°C. (Despite this seemingly low value, the intermolecular forces in liquid water are among the strongest such forces known!) Given the large difference in the strengths of intra- and intermolecular forces, changes between the solid, liquid, and gaseous states almost invariably occur for molecular substances without breaking covalent bonds.

Explanation:

     im not sure this is what your looking for but i found this

Answer:

Nuclear Charge

Explanation:

As we move from sodium to chlorine across, there's increase in atomic number (protons). This also means there is increase in the valence electrons (The valence electrons is denoted by the group).

As the number of protons increases, the nuclear energy also increases. Due to this, the electrons are attracted more strongly and pulled closely to the nucleus.

Answer:

Ch4 G +2o2 g co2 G +2h2o g How many moles of methane are required to produce 22 g co2 G after combustion

Explanation:

it's 22 grams..

hope the answer was helpful ....

Answer:

B

Explanation:

Because nuear changes release less negeyr than a chmeicsl and phsycial change

Answer:

Compression

Explanation:

Hi! When two convergent plates collide, they should create compressive pressure, or compression.

Answer:

b) Soil material being moved downstream carried by water

Explanation:

Erosion can be defined as a geological process which typically involves the wearing out of earthen (soil) materials and the transportation of these materials by natural forces like water, wind, etc. Soil erosion is greatest when the soil is steep.

The steepness of a body such as river or stream refers to the downward slope or gradient of the body of water.

Generally, the steepness of a body affects the rate at which other materials would flow or move around. Thus, the steeper a river or stream, the greater would be its rate of erosion.

An example of erosion in action is soil material being moved downstream carried by water.

Answer:

Volume in L = 0.028 L

Explanation:

Given data:

Mass of copper phosphate = 27.6 g

Molarity solution = 6.03 M

Volume of solution = ?

Solution:

First of all we will calculate the number of moles of copper phosphate.

Number of moles = mass/molar mass

Number of moles = 27.6 g/ 159.61 g/mol

Number of moles = 0.17 mol

Volume of solution:

Molarity = number of moles / volume in L

By putting values,

6.03 M = 0.17 mol / volume in L

Volume in L = 0.17 mol / 6.03 M

Volume in L = 0.028 L

Answer:

Boron

Explanation:

The group III A is also known in the periodic table as group 13. The members of the group begin to appear in the second period.

At the beginning of this group III A is boron. Boron is a member of group III A as well as a member or period 2.

Boron is a metalloid and has only three valence electrons as other group III A elements.

Answer:

paired electrons is magnetic configuration

Answer:

The number of valence electrons

Answer:

108- Hassium

11- sodium

56- Barium

92- uranium

25- manganese

103- lawrencium

10- neon

22- titanium

8- oxygen

14- silicon

32- germanium

39- yttrium

Answer: Humans have increased the global temperature due to fossil fuel burning and are negatively contributing to the increase of CO2 emissions and greenhouse gases.

Explanation:

#1 Over the past century humans have negatively impacted the environment by increasing the global temperature due to fossil fuel emissions and a steady increase in the human population which has led to more resources being extracted and used.

#2 Human activities have brought a sudden increase in the global temperature recently due to the increase in greenhouse gas emissions from factories, automobiles, and homes. While we are beginning to use renewable resources, a large portion of our energy consumption still comes from the production and burning of fossil fuels.

#3 Some ways we can start to put a stop to global warming are by using renewable energy resources and decreasing the use of fossil fuel emissions. We can also decrease our carbon footprint by using electric powered vehicles and devices instead of petroleum burning automobiles and home appliances, and by riding bikes and walking over short distances.

Note: Please reword this a bit so you don't get in trouble for plagiarism.

a. Gas A has the lowest rate of diffusion

Given

The molar masses

Required

the lowest rate of diffusion

Solution

Graham's law: the rate of effusion of a gas is inversely proportional to the square root of its molar masses or  

the effusion rates of two gases = the square root of the inverse of their molar masses:  

[tex]\rm \dfrac{r_1}{r_2}=\sqrt{\dfrac{M_2}{M_1} }[/tex]

So  :

[tex]\tt r\approx \dfrac{1}{\sqrt{M} }[/tex]

The greater the molar mass, the smaller the rate

So gas A has the lowest rate

Answer:

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Answer:

Magnesium Mg act as anode

Explanation:

Because its reduction potential is much less than zinc

Answer: C. Mg(s)

Explanation:

Answer:

the answer is 2 hope this helps

Answer:

0.67mole

Explanation:

Given parameters:

Mass of potassium permanganate  = 105.66g

Unknown:

Number of moles  = ?

Solution:

To find the number of moles of the given compound;

  Number of moles  = [tex]\frac{mass}{molar mass}[/tex]  

Molar mass of KMnO₄   = 39 + 55 + 4(16) = 158g/mol

  Number of moles = [tex]\frac{105.66}{158}[/tex]   = 0.67mole

Answer:

Decrease temperature with increase in ammonium nitrate concentration.

Explanation:

The temperature changes when  different masses of ammonium nitrate are dissolved in water because the ammonium nitrate takes energy from the surrounding water environment for the breaking of ionic bonds as a result the temperature of water decreases. When more concentration of ammonium nitrate is added to water, more decrease occur in temperature of water and the water becomes cold.

Hotness or a cold state of a substance or a solution is measured physically by temperature. It is measured by a device called a thermometer and can be in the form of Kelvin, degree Celsius or degree Fahrenheit.

Decreasing the temperature with an upsurge in the ammonium nitrate concentration can be used in determining the change in the temperature.

Therefore, increased concentration reduce temperature.

Learn more about temperature and here:

https://brainly.com/question/17203760

Answer:

the total weight of matter is conserved.

Explanation:

:)

Answer: B. 1 proton and 1 neutron(s)

Explanation: Founders Educere answer.

I love you, fellow summer school students good luck!

Please rate and vote and mark brainliest, I want a rank up.

a. AgBr(s)⇒ Ag⁺(aq) + Br⁻(aq)

b.  Ksp AgBr = s²

c. 5 x 10⁻¹³  mol/L

Given

solubility AgBr = 7.07 x 10⁻⁷ mol/L

Required

The dissolution reaction

Ksp

The solubility product constant

Solution

a. dissolution reaction of AgBr

AgBr(s)⇒ Ag⁺(aq) + Br⁻(aq)

b. Ksp

Ksp AgBr  = [Ag⁺]  [Br⁻]

Ksp AgBr = (s) (s)

Ksp AgBr = s²

c. Ksp AgBr = (7.07 x 10⁻⁷)² = 5 x 10⁻¹³  mol/L

Answer:

Destructive

Explanation:

Answer:

Start with the temperature in Fahrenheit (e.g., 100 degrees).

Subtract 30 from this figure (e.g., 100 - 30 = 70).

Divide your answer by 2 (e.g., 70 / 2 = 35).

Answer: cleaning up after the lab, D.

Explanation:

Answer:

121.11m/s²

Explanation:

Given parameters:

Force   = 525N

Mass = 4.5kg

Unknown:

Acceleration  = ?

Solution:

From Newton's second law of motion, we can find the solution to this problem. Using the expression below:

       F  =  m x a

F is the force

m is the mass

a is the acceleration

      So'

              525  = 4.5 x acceleration

            Acceleration = 121.11m/s²