What was the ball's average speed during the time represented on the graph?
A) 0.2 m/s
B) 0.5 m/s
C) 5.0 m/s
D) 10.0 m/s

The complete dissociation of 8 moles of water produces 4 moles of oxygen.

The moles of reactants and products in the chemical reaction corresponds to the whole number representation of the stoichiometric coefficient in the balanced chemical equation.

The balanced chemical equation for the reaction is:

[tex]\rm 2\;H_2O\;\to\;2\;H_2\;+\;O_2[/tex]

From the balanced chemical equation, dissociation of 2 moles of water produces 1 mole of oxygen.

The moles of oxygen produced by 8 moles of water are:

[tex]\rm 2\;mol\;H_2O=1\;mol\;O_2\\\\8\;mol\;H_2O=\dfrac{1}{2}\;\times\;8\;mol\;O_2\\\\ 8\;mol\;H_2O=4\;mol\;O_2[/tex]

The moles of oxygen produced from 8 moles of water is 4 moles.

Learn more about moles produced, here:

https://brainly.com/question/10606802

The U.S. Treasuries act as benchmark bonds implies that they're measured in terms of the spread with regards to other treasuries.

A benchmark bond simply means the standard measure of the risk of a bond against the other bonds.

When we say that U.S. Treasuries act as benchmark bonds we mean that yields on other bonds are measured in terms of the spread over treasuries.

Learn more about bonds on:

https://brainly.com/question/25965295

Answer:

By element with the lowest atomic number to the highest atomic number.

Explanation:

Answer:

169

Explanation:

protons+neutrons=atomic mass

70+99=169

Answer:5 F2 (g) + 2 NH3 (g) -> N2F4 (g) + 6 HF (g)

Explanation:moles = mass/molar mass

mass =molar mass x mole

a) moles of Nh3 = 58.5/17 = 3.44 moles

the mole ratio of F2:NH3 = 5:2

the moles of F2 =3.44x5/2=8.6 moles

mass= 8.6 x 38 = 326.8 grams of F2

B) moles of Hf = 3.89/20 = 0.1945 moles

mole ratio NH3:Hf= 2:6

moles of NH3 = 0.1945 x2/6 = 0.0648 moles

mass =0.0648 x17 = 1.102 grams of NH3

C) moles of f2 = 217/38 =5.711 moles

mole ratio N2F6:F2 =5:1

moles of N2F4=5.711 x1/5=1.142 moles

mass = 1.142 x104 = 118.77 grams of N2F4

Answer:

C D E

Explanation:

i took the test

Volatility is a measure of how easily a liquid evaporates and it decreases with increase in intermolecular forces.Volatile liquids have large number of molecules in the gas phase above liquid phase. Hence, options A, C, F are correct.

Intermolecular force is the force which binds the molecules or atoms in compound together. Three are various kinds of intermolecular forces such as ionic bond, covalent , H-bonding, dipole forces etc.

When liquids molecules have strong intermolecular interaction between them they will not be capable of escaping into the gaseous state. Hence volatility decreases with increase in intermolecular force.

For a volatile substance, the number of molecules which are escaped into gas phase above liquid phase  during evaporation will be higher. More volatile liquids will have lower boiling point . Hence, the correct statements regarding volatility are A, C and F.

To find more on volatility, refer here:

https://brainly.com/question/11609587

#SPJ2

Answer:

0.418ml

Explanation:

Density=Mass/Volume

By making Volume the subject of The formula=

Volume=Mass/Density

V=0.360/0.860=0.418ml

Answer:

The ref blood cells are shaped like sickles or crescent moons, sticky cells can get stuck in small blood vessels which can slow or block blood flow and oxygen to parts of the body

Answer:

3 seconds

Have a good day!

Answer:

3secs

Explanation:

speed = distance/time

d= 300m

s=100m/s

100= 300/t

100t=300

divide both side by 100

t= 300/100

t=3sec

Answer: taken from plants

Explanation:

because

Answer:

4.38 moles

Explanation:

It is the rounded off answer.

Answer:

3 because it the element that combined the form

Answer:

Aristotle believed that everything was comprised of earth, air, water, and fire, which were infinitely divisible.

This problem is providing us with the mass of calcium and chlorine. Thus, the percent composition of each element in the compound is required and found to be 36 % for calcium and 64 % for chlorine, according to the following:

In chemistry, we can use percent compositions in order to find a relationship between the relative amount of the elements in a compound and the mass of the very same compound.

In this case, given the mass of each element (chlorine and calcium), one can simply divide it by the sum of the masses of both calcium and chlorine to obtain the following:

[tex]\% Ca=\frac{16.2g}{16.2g+28.8g}*100\%= 36\%\\\\\% Ca=\frac{28.8g}{16.2g+28.8g}*100\%= 64\%\\[/tex]

Learn more about percent composition: https://brainly.com/question/12247957

Answer:

Mass and Distance

Explanation:

Because I know.

Answer:

"Gravity is a force of attraction between two objects that depends on two things: mass and distance. Mass: The greater the mass of two objects, the greater the gravitational force between the objects."

Explanation:

By definition of noble gases, neon does not easily form an ionic bond because it belongs to the group of noble or inert gases, so its reactivity is practically nil.

Noble gases are not very reactive, that is, they practically do not form chemical compounds. This means that they do not react with other substances, nor do they even react between atoms of the same gas, as is the case with diatomic gases such as oxygen (O₂).

The chemical stability of the noble gases and therefore the absence of spontaneous evolution towards any other chemical form, implies that they are already in a state of maximum stability.

All chemical transformations involve valence electrons, they are involved in the process of covalent bond formation and the formation of ions. Therefore, the practically null reactivity of the noble gases is due to the fact that they have a complete valence shell, which gives them a low tendency to capture or release electrons.

Since the noble gases do not react with the other elements, they are also called inert gases.

Neon does not easily form an ionic bond because it belongs to the group of noble or inert gases, so its reactivity is practically nil.

Learn more about noble gases:

https://brainly.com/question/8361108

https://brainly.com/question/11960526

https://brainly.com/question/19024000

When a component is removed from a reaction system at equilibrium, the equilibrium system will shift to replace some of what was removed.

It states that when a reaction is in equilibrium and one of the factors that affect the rate of reactions is applied, the equilibrium will shift to neutralize the effects of the constraint.

Every equilibrium system obeys Catelier's principle.

Thus, removing one of the components in a reaction that is in equilibrium will make the equilibrium shift to create more of the component being removed.

More on equilibrium can be found here: https://brainly.com/question/15118952

Answer:

D : The equilibrium system will shift to replace some of what was removed.

Explanation:

Answer:

134.397 Joules

Explanation:

Using the formula:

E = C × m × Δθ (where E is Energy, C is specific heat capacity and Δθ is change in temperature)

So E = 0.45×5.45×(79.8-25)

So E = 134.397 Joules

The heat required to raise the temperature of 5.45g of iron is equal to 134.4 J.

The specific heat capacity is described as the quantity of heat required to raise the temperature of one unit of substance by one-degree Celsius. The specific heat capacity of the substance depends upon the nature of the substance, not its quantity.

The mathematical formula can be used to determine the specific heat is equal to:

Q = m×C×ΔT

Given, the mass of the sample of iron, m = 5.45 g

The initial temperature of the sample, T₁ = 25°C

The final temperature of the sample, T₂ = 79.8°C

The specific heat capacity of iron, C =  0.450 J/g.°C

The heat required for the sample of iron will be:

Q = 5.45 × (0.450) × (79.8 -25)

Q = 134.4 J

Therefore, the heat required to raise the temperature of a 5.45g sample of iron is 134.4 J.

Learn more about specific heat capacity, here:

brainly.com/question/28302909

#SPJ5

Answer:

the answer is Respiratory epithelium, or airway epithelium, is a type of ciliated columnar epithelium found lining most of the respiratory tract as respiratory mucosa, where it serves to moisten and protect the airways. But I don't see that option here.

Answer:

The answer is the particles in both syringe A and syringe B move closer together.

Explanation:

Answer:

There is little if any, space left between its adjacent molecules.

Good luck!

Answer: the answer is 2400

Explanation: 10 x 20=200 x 12=2400

Answer:

How do ecosystems respond to natural disasters such as fires and floods :

Explanation:

They recover in stages, gradually returning to the original system. … She plans to create various physical and biological disturbances in the ecosystem to see how populations change over time.

Answer:

10×(-5)=-50 which means their are -50 moles

The female part is the pistil. The pistil usually is located in the center of the flower and is made up of three parts: the stigma, style, and ovary. The stigma is the sticky knob at the top of the pistil. It is attached to the long, tube like structure called the style.

Explanation:

honestly speaking the lanthanides have electron configurations that follow the Aufbau rule, and the 4f sublevel is filled as atomic number increases from cerium (Ce) to lutetium (Lu).