if a gas is held in 3.60 L, 298 K AND 800. mmHg, what is the new pressure of the gas if the volume us decreased by half and the tempature is decreased to 250. K

Answer:

Explanation:

whats the thing to put 2 gether

Answer:

What do hurricanes, tornadoes, and thunderstorms have in common?

ANSWER : Low pressure systems

Answer:

Acidic

Explanation:

The average pH of the ocean is now around 8.1, which is basic (or alkaline), but as the ocean absorbs more CO2, the pH drops and the ocean becomes more acidic.

Answer:

0.188 moles of copper and 0.376 moles of silver nitrate

Explanation:

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[tex]\\ \rm\rightarrowtail Cu+AgNO_3\longrightarrow Cu(NO_3)_2+Ag[/tex]

Moles of silver :-

Answer: The sum of all outputs must equal the input:

Explanation:

Answer:

rise the fall

Explanation:

when air is heated it become lighter then rise but when cooled it becomes heavy and fall

Answer:

Explanation:

It can be written as: V = nRT/P. "P" is pressure, "V" is volume, n is the number of moles of a gas, "R" is the molar gas constant and "T" is temperature. Record the molar gas constant "R". R = 8.314472 J/mole x K.

Answer:

0.25 moles (See below for explanation)

Answer:

1 dm equals about 10 cm

25 mm equals 2.5 cm

and then we have 4.2 cm, including a mass of 5.326 kg

How do we find the density of the block?

First, lets rewrite our formula.

d = mass divided by volume.

lets multiply 10 cm x 2.5 cm x 4.2 cm

this equals 105.

Now, lets turn 5.326 kg into what we need to divide.

1000 cm x 5.326 kg is 5326 cm

now lets do 5326 into 105

thats 50.  

Explanation:

50 is the answer.

Answer:

Explanation:

The names Px, Py and Pz, indicate the orientation of the orbital in space. The key difference between Px Py and Pz orbitals is that Px orbital has two lobes oriented along the x-axis and Py orbital has two lobes oriented along the y-axis whereas Pz orbital has two lobes oriented along the z-axis.

Answer:

Px can stand for Picture Pixel Prescription Prognosis Post Exchange or Physical Exam Personal Exchange Price.

Pz can stand for Precautionary Zone

Py can stand for Program Year or Python

Explanation:

hope this helps

Answer:

neutral

Explanation:

pH is usually (but not always) between 0 and 14. Knowing the dependence of pH on [H +], we can summarize as follows: If pH < 7, then the solution is acidic. If pH = 7, then the solution is neutral

Explanation:

I think 20

0 in the photo should be 1, 1, 1

In  1-isopropyl-2-methylcyclohexane, the number of hydrogen atoms is 18, and this is also an isomer of the cyclohexane, there is a methyl group on the first carbon and an isopropyl group on the second carbon in 1-isopropyl-2-methylcyclohexane.

It is significant as it has a methyl group and an isopropyl group, it is an isomer of the cyclohexane, and it is a compound that can exist in multiple forms with different properties, such as in the field of organic chemistry, uses in industry, etc.

Hence, in 1-isopropyl-2-methylcyclohexane, the number of hydrogen atoms is 18, and this is also an isomer of the cyclohexane, there is a methyl group on the first carbon and an isopropyl group on the second carbon in 1-isopropyl-2-methylcyclohexane.

Learn more about methylcyclohexane here.

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Answer:

ΔH = -162.5 kJ.

Explanation:

Hello.

In this case, we first rearrange the reactions:

ClO(g) + O₃(g) ⇒ Cl(g) + 2O₂(g);  ΔH =-122.8 kJ

2O₃(g) ⇒ 3O₂(g);  ΔH=-285.3 kJ

O₃(g) + Cl(g) ⇒ ClO(g) + O₂(g);  ΔH= ?

Thus, we are going to use the Hess law, as an strategy to rearrange the known chemical reactions and thereby compute the enthalpy of reaction of the unknown one.

1. The first reaction must be inverted in order to obtain chlorine as a reactant in the third one, therefore, the enthalpy of reaction becomes positive:

Cl(g) + 2O₂(g) ⇒ ClO(g) + O₃(g);   ΔH = 122.8 kJ

2. Second reaction remains the same:

2O₃(g) ⇒ 3O₂(g);  ΔH=-285.3 kJ

Then, we add them to obtain:

Cl(g) + 2O₂(g) + 2O₃(g) ⇒ ClO(g) + O₃(g) + 3O₂(g)

Whereas we can subtract both oxygen and ozone to obtain the third one:

O₃(g) + Cl(g) ⇒ ClO(g) + O₂(g)

Therefore, the enthalpy of reaction turns out:

ΔH = 122.8 kJ + (-285.3 kJ )

ΔH = -162.5 kJ.

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Answer:

Ozone (O3) Nitrogen dioxide (NO2) Carbon monoxide (CO) Sulphur dioxide (SO2)

Explanation:

Answer:

Particulate matter (PM10 and PM2. ...

Ozone (O3)

Nitrogen dioxide (NO2)

Carbon monoxide (CO)

Sulphur dioxide (SO2)

Explanation:

Particulate matter (PM10 and PM2. ...

Ozone (O3)

Nitrogen dioxide (NO2)

Carbon monoxide (CO)

Sulphur dioxide (SO2)

Answer:

The bonds between atoms in the reactants are rearranged to form new compounds in chemical reactions, but none of the atoms disappear and no new ones are formed. As a consequence, chemical equations must be balanced, meaning that the number and kinds of atoms must be the same on both sides of the reaction arrow.

Answer:

The Law of Conservation of Mass states that mass is neither created nor destroyed, it only changes.

So when you balance a chemical equation, what you get is the same equation, but with the same number of atoms of each chemical element in the reactants and in the products. In this way the conservation of mass is achieved, because the same number of atoms that exists in the reactants is the one that is later transformed and appears in the products.

A balanced equation is the following:

H2 + 1/2O2 --------> H2O

Reactants: Products:

Amount of H = 2 Amount of H = 2

Amount of O = 1 Amount of O = 1

It is a balanced equation because each element has the same number of atoms in the reactants and in the products.

Explanation:

If I help you give me points, thanks.

Answer:

242

96

1

0

Explanation:

Knowing the functioning of balancing equations, we have that the values ​​of the constants correspond to 242, 96, 1 e 0.

Given the equation we have:

[tex]239 \ 94 Pu + 4 2 He \rightarrow a b Cm + c d[/tex]

Knowing from the beginning that nothing is lost and nothing is created but everything is transformed, we will have that the value of the constants will be given by:

so for a and b we will calculate as:

[tex]239+3=a\\a=242\\94+2=b\\b=96[/tex]

See more about balancing equations at brainly.com/question/10413253

Answer:

The atomic mass of element is 65.5 amu.

Explanation:

Given data:

Abundance of X-63 = 50.000%

Atomic mass of  X-63 = 63.00 amu

Atomic mass of X-68 = 68.00 amu

Atomic mass of element = ?

Solution:

Abundance of X-68 = 100-50 = 50%

Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Average atomic mass  = (50×63)+(50×68) /100

Average atomic mass =  3150 + 3400 / 100

Average atomic mass  = 6550 / 100

Average atomic mass = 65.5 amu.

The atomic mass of element is 65.5 amu.

Answer: The theory explains the phenomenon based on certain criteria while the paradigm provides the background or the frame that allows a theory to be tested and measured.

Explanation:

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Answer:

Chemical

Explanation:

Macromolecules are part of the chemical components of cells. For example, DNA, proteins, and lipids.

Cells of similar types/function form tissues. Different types of tissues interact together to form organs. Organs form a common function.

Answer:

0.013

Explanation:

Answer: La+3 binds to PO4-3 in the urine sample which prevents the formation of Ca3(PO4)2 and frees the Ca+2 in the sample to be atomized.

Explanation:

In the presence of phosphates, the calcium ions form a refractory compound (calcium phosphate) which is not atomized in the plasma/flame in atomic absorption spectroscopy.

The addition of a releasing agent like lanthanum to the sample minimizes the formation of refractory compounds as the lanthanum binds with the phosphate ions to form more volatile compounds.

Answer:

Rounding volume to nearest whole number is 5cm³.

Explanation:

Given data:

Mass of smaller iron cube = 20 g

Density of cube = 7.87 g/cm³

Volume of larger cube = ?

Solution:

The mass of larger iron is twice of smaller iron cube.

It will be 40 g.

Now we will apply the density formula.

d = m/v

7.87 g/cm³ = 40 g/ v

v = 40 g/ 7.87 g/cm³

v = 5.08 cm³

Rounding answer to nearest whole number is 5cm³.

Answer:

Imagine that the planet is an onion. When you open it, you will discover that it can be separated into layers that are perfectly independent from each other, but that they make sense if they are united. The central part of the onion is different, almost circular.

Explanation:

The center of the planet is known as the nucleus. This layer is shaped like a sphere, and in turn is made up of two layers: the inner core (where the temperature reaches up to 5000 degrees Celsius) and the outer core (whose consistency is semi-liquid). The core is made up of nickel, iron, sulfur, oxygen, and copper.

Answer:

A is the correct answer