A steel bottle contains nitrogen gas at STP. What is the final pressure if the temperature is changed to 155°C?

Answer:

1. four in the first energy level, four in the second energy level

2. eight in the first energy level, zero in the second energy level

3. zero in the first energy level, eight in the second energy level

4. two in the first energy level, six in the second energy level *

Explanation:

1. four in the first energy level, four in the second energy level

2. eight in the first energy level, zero in the second energy level

3. zero in the first energy level, eight in the second energy level

4. two in the first energy level, six in the second energy level *

Answer:

29.3 years to live

Explanation:

Phosephurus loses 32 years at his life -32

then he gains 14.3 years back and another 57.2 years

totaling 29.3 years he will live

Answer: Calcium carbonate contains 3 elements, calcium, carbon, and oxygen. The formula is CaCO3.

Explanation:

Answer:

There are 3 elements.

Explanation:

The formula for calcium carbonate is CaCO3. The elements in it are Calcium, Carbon, and Oxygen.

The density of the metal beads is 12.47 g/mL (option c).

1. Determine the mass of the metal beads:

  Mass of beaker + metal beads = 205.5 g

  Mass of empty beaker = 82.0 g

  Mass of metal beads = (Mass of beaker + metal beads) - (Mass of empty beaker)

                    = 205.5 g - 82.0 g

                    = 123.5 g

2. Determine the volume of water displaced by the metal beads:

  Initial volume of water in the graduated cylinder = 60.9 mL

  Final volume of water in the graduated cylinder = 70.8 mL

  Volume of water displaced = Final volume - Initial volume

                           = 70.8 mL - 60.9 mL

                           = 9.9 mL

3. Calculate the density of the metal beads:

  Density = Mass / Volume

  Density = 123.5 g / 9.9 mL

  Density = 12.47 g/mL

Therefore, the density of the metal beads is 12.47 g/mL (option c).

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Answer: falso

Explanation:

Explanation:

one substance

+one substance=balanced of chemical equation

Answer:

when i exist

Explanation:

Answer:

204.8256

Explanation:

Not all chemical reactions are spectacular. They do not always involve substances that you think of as chemicals like the ones in the lab or in acid rain. ... When molecules of sulfenic acid get to your eyes, they can react with the water in your eyes to produce a new substance, a form of sulfuric acid.

Answer:

The answer is A Tuberculosis

Answer:

The 3rd answer or NCI is the correct answer

Explanation:

Hope this helps:)

Answer:

the 1st one

Explanation:

Answer:

The usage of gold is generally avoided in semiconductor technology, since it acts as a deep-level trap and recombination center, i.e. charge carriers of opposite sign do recombine at Au defects in Si and get lost to the current.

Answer:

military time

Explanation:

military time

Based on the trend of electronegativities values of the elements Be, Mg, Ca, and, Sr within their group (increasing from bottom to top), the atoms of the element Sr will have the least attraction for an electron.  

We need to remember that electronegativity indicates the affinity or attraction of an element for an electron. Hence, the higher the electronegativity, the higher the attraction of that element for an electron.  

The values of electronegativities of the given elements are the following:

Be = 1.57

Mg = 1.31

Ca = 1.0

Sr = 0.95

We can see that the increasing trend of electronegativities in this group is from the bottom to the top, having the Sr with the lowest electronegativity value and the Be with the highest.  

This trend is related to atomic size, the larger the atomic size, the lower the electronegativity because the electron in the outermost shell will feel less attraction towards the nucleus of an atom. In a group of the periodic table, the size of an atom will increase from top to bottom.          

Therefore, according to the said above, the atoms of the Sr will have the least attraction for an electron (it has the lower electronegativity value).

Find more about electronegativity here:

I hope it helps you!

Answer:

Nonbiodegradable substance

Answer:

C.) 1700 Pa

Explanation:

300 k - 0.3 m^3 = 17000

Answer

No you did not lose weight.

Explanation:

Weight is the force acting on an object, Gravity is a force on earth which does not apply to the moon so your weight may change depending in where you are but your mass will stay the same because mass measures the matter of an object ITSELF! Have a nice day....

Answer:

I would take my weight on Earth and divide it by  6. I'd weigh less because the gravitational pull on the Moon is less, and, weight is the measure of gravitational pull. I wouldn't "loose weight" because I'd weigh the same on Earth  as I did the day I left (give or take a few pounds).

Explanation:

Answer:

Speed = Distance × Time

A× B

Explanation:

The molar mass of a compound can be calculated by finding the molar of the individual atoms that combine to make the compound.

Molar mass of compound =

         ∑ (molar mass of element × number of atoms of the element)

∴ Molar mass of dimethylglyoxime

                 = 4C + 8H + 2N + 2O

                 = [(4 × 12.011) + (8 × 1.0080) + (2 × 14.007) + (2 × 15.999)] g/mol

                 = 116.12 g/mol

Answer:

because of the reflection that the Sun makes on the water after it rained.

bởi vì sự phản chiếu mà mặt trời tạo ra trên mặt nước sau khi trời mưa

Explanation:

Answer:

ITS CALLED RASH

Explanation:

Answer:

A

Explanation:

Friction is a force that opposes motion.

Answer:

Neptune is bigger than the moon

Explanation:

The circumference of the moon is 6,783.5 miles

The circumference of Neptune is 96,129 miles

This means neptunes circumference is about 14 times the size of the moons

At a fixed temperature and pressure, a cylinder contains equal volumes of O2 and an unknown gas. The identity of the unknown gas CO.

The number of moles of a given substance is calculated by dividing the mass by the molar mass.

The number of moles of O₂ = [tex]\mathbf{=\dfrac{20.0 \ g}{32 \ g/mol}}[/tex]

= 0.625 moles.

Based on the given assumption, at fixed temperature and pressure;

The molar mass of the unknown gas can be estimated as:

[tex]\mathbf{= \dfrac{mass}{number \ of \ moles}}[/tex]

[tex]\mathbf{= \dfrac{17.5 \ g}{0.625 \ moles}}[/tex]

= 28 g/mol

Therefore, we can conclude that the unknown gas is CO.

Learn more about gases here:

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Answer:

A

Explanation:

Answer:

It's the first one I think "it absorbs the other greenhouse gases and becomes more potent