1. Properties that do not depend on the amount of matter present are... ????*
Extrinsic Properties
Chemical Properties
Intrinsic Properties
i

Answer:

102.807 kPa

Explanation:

There are some assumptions to be made in the answer. The air inside the balloon acts as an ideal gas at a given temperature conditions.

Using the combined ideal gas equation.

P= absolute pressure of the air inside the balloon.

V= volume of air inside the balloon (6.23 L= 6.23 * 10⁻³ m³)

n= moles of gas(air). (0.250 mol)

R= Universal gas constant ( 8.314 J / mol·K)

T= Temperature in Kelvin

T= 35 + 273.15 = 308.15 K

P= 102.807 * 10³ Pa

P= 102.807 kPa

Answer:

The weight of an object is defined as the force of gravity on the object and may be calculated as the mass times the acceleration of gravity, w = mg.

Explanation:

The measurement of the effect of gravity on an object's mass is called weight. While mass m is a measurement of the object's amount of matter. W=mg provides the weight.

The formula W (weight) = m (mass) times g (gravity, on Earth typically measured at 9.8 N/kg) allows you to determine something's weight from its mass and vice versa.

The common weight calculation formula is W = mg (N/kg). Here, "g" stands for the acceleration brought on by gravity. The value of g on earth is 9.8 m/s2. Other names for it include the gravitational constant.

A body's mass, which is a measurement of how much matter it contains, is equal to its weight when multiplied by the acceleration caused by gravity. The SI unit of weight is the Newton, and the SI unit of mass is the kilogramme (kg) (N).

Thus,The formula relating mass and weight is W=mg.

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Answer:

Im pretty sure that 5N to the Right is correct answer

Answer: combination (it is synonymous with synthesis)

The oxidation number of Ag in Ag2O is +1.

In Ag2O, there are two silver atoms (Ag) and one oxygen atom (O). Oxygen is known to have an oxidation number of -2 in most compounds. Since the compound is neutral, the sum of the oxidation numbers of all the atoms must equal zero.

Therefore, the oxidation numbers of the two silver atoms must add up to +2 to balance out the -2 oxidation number of the oxygen atom. Since there are two silver atoms, each silver atom must have an oxidation number of +1 to yield a total oxidation number of +2 for the compound.

In Ag2O, the silver atoms lose one electron each to form Ag+ ions. This results in an oxidation number of +1 for each silver atom. The oxygen atom gains two electrons from the silver atoms to achieve a stable octet configuration, resulting in an oxidation number of -2 for the oxygen atom. The compound Ag2O is formed through the transfer of electrons, with each silver atom exhibiting an oxidation number of +1.

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1 moles H2 to grams = 2.01588 grams 5 moles H2 to grams = 10.0794 grams 10 moles H2 to grams = 20.1588 grams 15 moles H2 to grams = 30.2382 grams 20 moles H2 to grams = 40.3176 grams 25 moles H2 to grams = 50.397 grams 30 moles H2 to grams = 60.4764 grams 40 moles H2 to grams = 80.6352 grams

Answer:i think its d hope this helps c:

Explanation:

The result of the computation when you follow the steps is 1.699.

A logarithm is a mathematical function that represents the exponent or power to which a specific base must be raised to obtain a given number. In simpler terms, it answers the question: "To what power must we raise a base number to obtain a certain value?"

What you should do is that on your calculator, you could press the logarithm key and then put in the value that has been shown and then the result would be displayed on your calculator.

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In the electrical arrangement, the 6p subshell of the radon element contains 6 electrons.

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A reaction between Iron and Oxygen is a combination/synthesis reaction.

This is because it is a combination of two reactants to form something big.

4Fe + 3O2 = 2Fe2O3

It is not a combustion reaction, all combustion reactions result in CO2 and H2O.

It is also not decomposition, decomposition is the reverse of synthesis/combination reaction.

Answer: Mass after three decay is 8.75 mg

Explanation: if you divide 17190 by 5730 you see three decays has happened.

So you divide mass by two three times. 70 mg :2 = 35 mg, 35 mg :2 = 17.5 mg

And 17.5 mg:2 = 8,75 mg

Answer:

D.

Explanation:

Answer:

1. 505g is the mass of the aluminium.

2. The answer is in the explanation

Explanation:

1. To solve this question we need to find the volume of the rectangle. With the volume and density we can find the mass of the solid:

Volume = 7.45cm*4.78cm*5.25cm

Volume = 187cm³

Mass:

187cm³ * (2.702g/cm³) = 505g is the mass of the aluminium

2. When the temperature of a liquid increases, the volume increases doing the density decreases because density is inversely proportional to volume. And works in the same way for gases because the temperature produce more collisions and the increasing in volume.

1. We are given :

• n = 4.12 mol

• at STP , we know that :

According to avogadro's law at STP 1 mole of gas occupy volume 22.414 L

2. Calculations :

If 1 mole : 22.424L

then,4.12mole : x L .......(do a cross multiply)

Therefore ; x L = 4.12Mole * 22.424L/ 1 mole

=92.38 Litres

≈92.4 L

• This means that 4.12 mol sample of hydrogen gas will occupy ,92.4 Litres

Answer:

J/g°C=H

H×g°C=J

H×g°C/H×g=J/H×g

Answer:

First, we need to determine the molar mass of HCl.

The molar mass of HCl = the mass of hydrogen (1.008 g/mol) + the mass of chlorine (35.45 g/mol) = 36.45 g/mol.

Next, we can use Avogadro's number (6.02 x 10^23 molecules/mol) to convert the number of molecules to moles:

6.02 x 10^24 molecules / 6.02 x 10^23 molecules/mol = 10 moles

Finally, we can use the molar mass to convert moles to grams:

10 moles x 36.45 g/mol = 364.5 grams

Therefore, the mass of 6.02 x 10^24 molecules of HCl is 364.5 grams.

The chemical name for the compound CH3CH₂CH₂CH3 is butane.

Alkanes are any acyclic saturated hydrocarbon with a carbon to carbon single bond e.g. methane, ethane etc.

Alkanes have a general molecular formula of CnH2n+2. The number of carbon atoms determines the name of the alkane member.

According to this question, a chemical compound with the molecular formula; CH3CH₂CH₂CH3 is given. This compound posseses 4 carbon atoms and 10 hydrogen atoms, hence, is butane.

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Answer:Na+Cl2---->NaCl

Explanation:

Answer:

I've balanced the equations.

They are in the attached image.

The values in red are the added number to make the equation balanced .

Answer:

Explanation:

Discussion

When Pressure increases  equilibrium shifts to the side with the smallest number of moles. But which side is that?

N2(g) + 3H2(g) ⇌ 2NH3(g)

The left side has 1 mol of nitrogen (N2) and 3 moles of Hydrogen = 4 mols

on the left side.

The right side has 2 mols of NH3 = 2 mols on the right.

Conclusion: You tell the number of mols by the Balance numbers to the left of each chemical in an equation.

Since the left side N2 + 3H2 = 4 mols, the equilibrium does NOT shift left.

2NH3 is only two mols.

The equilibrium shifts Right

Answer

D

Answer: 0.27 moles of CO2 and 11.88 grams of CO2

Explanation: Use the Ideal Gas Law, PV = nRT, substitute the values given and solve.

I can't seem to upload procedure but:

P = 1.5atm

V = 4.5L

n = moles

R = 0.0821gr/mol (when using atm, kPa is 8.31)

T = 300K

Isolate what you don't have, in this case n. Change PV = nRT to PV/RT = n. Substitute the values to get moles. Once you have this, multiply the value by the molar mass of CO2 (44gr/mol) to get the mass of CO2 in grams.

So,

First of all, remember that a "mol" has two meanings:

In this case, we want to find the number of atoms in 15.2g of Fluorine. Using the fact that the molar mass of F is 18.998g/mol, we could write:

Answer:

Explanation:

silicon has highest ionization energy ionization energy increases from left to right in a period because electron are added to same shell and increase in added electron shield each other poorly from the nuclear attraction

The following balanced chemical equation may be used to describe the interaction between aluminum (Al) and calcium nitrate (Ca(NO₃)₂):

2 Al + 3 Ca(NO₃)₂ → 2 Al(NO₃)3 + 3 Ca

Reactants are the chemicals that begin a chemical reaction, while products are the compounds that are created as a result of the reaction.

The substances that initiate a chemical reaction. Products are the substances that are created during the reaction. Compounds or elements can act as reactants and products.

Aluminium and calcium nitrate interact in this reaction to form aluminium nitrate (Al(NO₃)₃) and calcium (Ca), which are the end products.

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Answer:

A. When two atoms join together to form a larger atom

Explanation:

Nuclear fusion is the process by which two or more atomic nuclei join together to form a single heavier nucleus and large amounts of energy.

Answer:

F = ma, or force is equal to mass times acceleration.

Answer

The complete nuclear reaction is

Explanation

The incomplete equation is that of beta radiation; where the Mg emits an electron. Beta radiation is the emission of electrons or positrons, alpha radiation is the name for the emission of an alpha particle in fact an helium nuclei, and gamma radiation is the term used for the emission of energetic photons.

The complete nuclear reaction is shown below:

Answer:

Burning of wood is chemical change

Dry ice into Carbon dioxide conversion is physical change.

Explanation:

Because when wood is burnt it cannot be recovered back by tthe ashes. So it is chemical change.

Dry ice conversion into Carbon dioxide is a physical change because the chemical composition remains same.

Answer:

wood = chemical

dry ice = physical

Explanation:

Any temperature can be multiplied by k to determine the appropriate pressure within a single container: p2 = k T2. By dividing each pressure value by k, you may the new temperature using the formula T2 = p2/k.

The temperature is 20 degrees Celsius (293.15 degrees 303 k, 68 degrees Fahrenheit), the density is 1.204 kilogrammes for every cubic metre (0.075 lb/ft3), and the pressure is one atmosphere (101.325 kilonewtons per square metre, 101.325 kPa, 14.7 PSI indisputable fact, 0 PSI gauge, 29.92 feet wide of mercury, 407 inches of water, 760 Torr).

In this equation, P denotes pressure in atmospheres, V denotes volume in litres, n denotes moles of particles, T denotes temperature in Kelvin, and R denotes the ideal gas constant (0.0821 litre atmospheres per moles Kelvin).

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the Particle Neutron is discovered by James Chadwick and as it was the neutral particle he named it so to be neutron. The proton was discovered by Ernest Rutherford and he named his discovery as protons which is based on a Greek word "protos" which means 'First'.

Neutron is the neutral particle present in the nucleus of an atom with same mass as of protons. It doesn't posses any charge on it.

Proton is the positively charged particle present in the nucleus of an atom with Neutron. Protons and neutron both have same masses but they differ in their nature.

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Before John Dalton's extraordinary theory, there were other speculations that focused on the components of mass. The subatomic particles that create various sorts of atoms were eventually understood by the scientists. The laws of mass conservation, multiple proportions, and constant composition were all fully established by this theory for the first time. The scientists subsequently made the discovery of three subatomic particles. Numerous more significant discoveries were prompted by the discovery of the electron, proton, and neutron.

Atoms make up matter. A large number of subatomic particles make up one atom. We shall learn who made the discovery of electron protons and neutrons in this section. Each subatomic particle was found as a result of a different series of experiments. Nuclear Physics and its different branches were founded as a result of these revolutionary discoveries made in the 19th and 20th centuries.

To comprehend the physical characteristics of these subatomic particles, it is essential to grasp how the scientists carried out these studies. Discovering how electron proton neutrons are identified by differentiating their characteristics will captivate you.

How Was the Electron Found?

The subatomic particle that is still present outside of the nucleus is an electron. The electromagnetic force of attraction holds it in place. The strong force retains an electron in its orbit despite the enormous distance between it and a nucleus. In the year 1885, Sir William Crookes made the discovery of the electron.

He heated metallic electrodes in a vacuum to conduct a number of tests. He was carrying out tests to examine how metals behave when heated in a vacuum. He had partially evacuated the glass tube in which he was heating the electrodes. A stream of extremely charged particles was seen moving from the negative electrode, or cathode, to the positive electrode of the anode when a high-voltage source was connected to the electrodes.

Crooks observed that these particles moved straight along in the absence of any external magnetic or electric fields. The subsequent investigations carried out by the other scientists led to the conclusion of a set of characteristics of these particles. An outstanding physicist named Sir J. J. Thompson created electrons and improved their physical properties.

How were protons discovered?

A perforated cathode was being used in experiments by Eugen Goldstein, who discovered protons (negative electrode). Although there is air within a glass tube with the electrodes in it, the pressure is quite low. In 1886, he tried. The electron was not found and named during this period. He crossed the electrodes with a high voltage. In that tube, he noticed a crimson glow behind the cathode. This ray was created by electrons moving in the opposite direction to that of cathode rays.

Goldstein thus unintentionally found the proton. Then, the same experiment was carried out on anodes, causing another ray to flow. When there was no electrical or magnetic field present, the particles this time possessed a large mass but still moved straight. It has been effectively explained how these subatomic particles formed in the ray.

Compared to electrons, these particles are significantly heavier. Even when different metals were employed for the same experiment, the charge to mass ratio (e/m) remained constant. Moving on, Rutherford was able to demonstrate that the hydrogen ion (H+), created in 1919 when a hydrogen atom lost an electron, shared the same characteristics as the positive particles moving and creating rays.

Finding of the Neutron After World War I

James Chadwick visited his instructor Ernest Rutherford in England. Under Rutherford's guidance, he finished his doctoral work and focused his investigations on radioactive decay. Rutherford discovered protons in atoms, but Chadwick discovered that protons weren't the only subatomic particles that might be found inside an atom's nucleus.

He then carried out his atomic disintegration experiments and discovered that while helium has an atomic number of 2, it has a mass number of 4. He came to the conclusion that only protons can contain two electrons in a helium atom after conducting a number of further experiments. As a result, other subatomic particles with a proton's mass did not carry a charge. Despite being neutral, these particles had mass. He earned the Nobel Prize in 1935 for his discovery of neutrons.

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Answer:

COVALENT

Explanation:

covalent and is formed by the sharing of two valence electrons.