Hey guys I'm under a lot of pressure to finish my Chemistry assignment before the term ends, and help will be appreciated even if you answer just one.

1. What is the pressure on a gas at 350. K if the pressure is 2.62 atm at 300. K?

2. The volume of a gas at 298K is 0.346 L when the pressure is 201 kPa, what will the volume be when the pressure is 152 kPa at 298K?

3. In a rigid, 6 L container, the pressure of N2 gas is 0.592 atm at 305 K, what temperature will the gas be if the pressure is 0.891 atm?

4. The pressure of a sample of CO2 was 2.00 atm when the temperature was 30.45 ℃, what will the pressure be if the temperature of the sample is heated to 92.01℃?

Answer:

409.0 grams

Explanation:

total mass-(mass of salt+mass og empty beaker)

Answer:

442

Explanation:

og empty beaker + salt

Answer: Nitric acid + Hydrogen disulfide

Explanation: To balance HNO3 + H2S = NO + S + H2O you'll need to be sure to count all of atoms on each side of the chemical equation.

Once you know how many of each type of atom you can only change the coefficients (the numbers in front of atoms or compounds) to balance the equation for Nitric acid + Hydrogen disulfide .

Important tips for balancing chemical equations:

Only change the numbers in front of compounds (the coefficients).

Never change the numbers after atoms (the subscripts).

The number of each atom on both sides of the equation must be the same for the equation to be balanced.

Answer:

Newton's Second Law states that an object's acceleration depends on the net force upon the object, as well as the object's mass.

So, a real world example of this would be pushing a vehicle out of a ditch. If your vehicle is a motorcycle, with a relatively small mass, then you don't need to apply much force on it, as compared to if the vehicle were a pickup truck, with a large mass, which would require much more force applied to move it out of the ditch.

I hope this helps! Feel free to give me Brainliest if you feel this helped. :)

Answer:

One reason why it could be important is hitting a ball. if the ball is heavy it will be harder to hit it far than if its light.

Answer:

Lightbulb: electrical energy to light energy

Alarm Clock: electrical energy to sound energy

Rollercoaster: electrical energy to mechanical energy

Riding a Bike: chemical energy to mechanical energy

Explanation:

Light bulbs, alarm clocks, and roller coasters require electrical energy to work. This energy then changes into the subsequent types. Light bulbs primarily emit that energy in the form of light, alarm clocks change that energy into sound, and roller coasters begin to move (mechanical). People power bikes, and the energy in our body is stored as chemical energy. So, when we rides bikes, that energy gets turned into moving (mechanical) energy.

Answer:

A= Coconut oil, B= Water, C= Sea water

Explanation:

oil is dense, water will allow things to float, but not as well as sea water

Answer: it is group1 or group 3 on god

Explanation:

Answer:

reaction with oxygen

Explanation:

The term oxidation was originally used to describe reactions in which an element combines with oxygen.

Answer:

blue star is the hottest of all

Explanation:

Blue stars are blue because of the temperature of their surface and they are so hot because they are much more massive than cooler stars like our sun.

Answer:

Carbon has 2 unpaired electrons

Oxygen has 2 unpaired electrons

Sulfur has 2 unpaired electrons

Explanation:

Addition of NaOH will cause the equilibrium position to move to the left because of the removal of the hydrogen ions.

When changes in temperature, pressure or concentration is imposed on a reaction system in equilibrium, the system will readjust itself in order to annul the change.

This change occur when the equilibrium position is moved to the left or right. For the reaction, CrO4^2-+ 2H^+ ⇄ Cr2O7^2- + H2O, addition of NaOH will cause the equilibrium position to move to the left because of the removal of the hydrogen ions.

Learn more about equilibrium position: https://brainly.com/question/12546111

Answer:

In the followings below, the one that doesn't attract to magnets is:

Option 4, Aluminum.

Explanation:

Mainly because of the aluminum's crystal structure.

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Answer:

Aluminum

Explanation:

Ferromagnetic Metals

Ferromagnetic metals and alloys are the only magnetic metals. Out of all of the elements on the periodic table, there are only 3 metals that are attracted to magnets: iron, nickel, cobalt.

Aluminum

Aluminum is a nonferrous metal (meaning not including iron or steel) that does not include any ferromagnetic metals. Additionally, aluminum itself is not magnetic, so there is no attraction between aluminum and a magnet.

Answer:

Initial Volume ( V₁ 0.43L

Initial Concentration (M₁) 13M

Final Concentration ( M₂) 3.0M

Final Volume ( V₂) = ?

we have to determine the final volume of diluted solution .

Using Dilution Equation

[tex] \bull\bf \: M_{1}V_{1} = M_{2}V_{2} [/tex]

Put the given value

[tex]\sf \longrightarrow \: (13 \times 0.43) = (3 \times \: V_{2} ) \\ \\ \\ \sf \longrightarrow \:(5.59) = 3V_{2} \: \\ \\ \\ \sf \longrightarrow \: \:V_{2} \: = \dfrac{5.59}{3} \\ \\ \\ \sf \longrightarrow \: \: V_{2}\: = 1.86 \: litre[/tex]

Therefore,

Answer:

This is the reverse of a synthesis reaction. Replacement reactions occur when elements switch places in compounds. In a single replacement reaction, one element takes the place of another in a single compound. In a double replacement reaction, two compounds exchange elements

Answer: 50%

Explanation:

The best we get from the moon is a full moon, which is just half of the moon shining from the earth while the other half is in complete darkness.

The new volume of a gas at STP that occupies 16L of space is 27.43L.

The volume of a given gas can be calculated using the following expression:

P1V1/T1 = P2V2/T2

Where;

1 × 16/273 = 2.6 × V2/468

16/273 = 2.6V2/468

0.0586 × 468 = 2.6V2

V2 = 27.43

Therefore, the new volume of a gas at STP that occupies 16L of space is 27.43L.

Learn more about volume at: https://brainly.com/question/1578538

why helium is inactive

Answer:

D) part is the correct answer

Answer:The answer is D

Explanation:The moon is a bit more than one-fourth (27 percent) the size of Earth, a much larger ratio (1:4) than any other planets and their moons. Earth's moon is the fifth largest moon in the solar system. The moon's mean radius is 1,079.6 miles (1,737.5 kilometers).

Two common synthetic indicators are

The indicators are used to check whether the solution is basic or acidic

Answer: the answer is a

Explanation:

you should always keep lab coat on when in lab

Answer:

its  A. chemistry labs have a lot of things that can hurt you, even with just a few drops . its one of the most dangerous experiment types you do in science. even if your not doing an experiment  but your in the room you should have on protection in case of a spill or something.  it is always impotent  to have safety  gear on. even more so in chemistry

The bond energy is the energy that must be supplied to break the bond. Ionic substances are held together by strong bonds.

This question is incomplete but I will try to explain what is meant by average bond energy as the tables are missing.

The average bond energy of a bond simply means the energy that is stored in that bond as it holds two atoms together. It is equal to the energy that must be supplied to break the bond. The numerical value of the bond energy can not be deduced as the data is missing.

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Neptune’s orbit affect its climate by creating unpredictable storms.

Neptune's orbital period is 165 years in which seasons are 40 years long. Neptune has unique and strangest weather in the entire Solar System. It has huge storms with extremely high winds.

So we can conclude that Neptune’s orbit affect its climate because equatorial orbit creates unpredictable storms.

Learn more about climate here: https://brainly.com/question/17922964

Answer:

Atoms are composed of particles called protons, electrons and neutrons. ... A particular atom will have the same number of protons and electrons and most atoms have at least as many neutrons as protons. Protons and neutrons are both composed of other particles called quarks and gluons.

Particles can be atoms, molecules or ions. The term molecule is often used incorrectly to refer to any type of chemical compound. A molecule is a neutral particle made of two or more atoms bonded together. Take care with your own language, especially when referring to compounds formed during chemical reactions.

Answer:

Explanation:

720 ml

Answer:

720 ml

Explanation:

Answer:

solidification

Explanation:

Answer:

● They have more than two carbons that are bonded to only one other

Explanation:

They have carbons bonded in a single row from one end of the molecule to the other end of the molecule. ... The straight-chain alkane has two more hydrogen atoms than the cycloalkane

Answer:

D. They have carbons bonded in a single row from one end of the molecule to the other end of the molecule.

Explanation:

I got it wrong when I chose C - They have more than two carbons that are bonded to only one other carbon. So yeah p.s UNUS ANNUS