CHEMISTRY HIGH SCHOOL

Which list of the phases of H2O is arranged in order of increasing entropy?(1) ice, steam, and liquid water
(2) ice, liquid water, and steam
(3) steam, liquid water, and ice
(4) steam, ice, and liquid water

Answers

Answer 1
Answer: The answer is (2). The entropy is measured the disorder degree. So the increasing of entropy of the phases are solid, liquid and gas. So the answer is ice, liquid water and steam.

Related Questions

Which of the following best describes how chemical changes differ from physical changes?A. Physical changes produce no new substances and chemical changes do.B. Physical changes always involve the formation of a gas while chemical changes may not.C. Physical changes can occur inside or outside the substance; chemical changes always occur outside.D. Physical changes involve a change of state; chemical changes involve a change of shape.
Mercury(II) oxide (HgO) decomposes to form mercury (Hg) and oxygen (O2). The balanced chemical equation is shown below. 2HgO 2Hg + O2 The molar mass of HgO is 216.59 g/mol. The molar mass of O2 is 32.00 g/mol. How many moles of HgO are needed to produce 250.0 g of O2? 3.906 7.813 15.63 73.87
Name the following chemical compound. NaBra. sodium bromite b. niobium bromite c. sodium bromide d. niobium bromide
How many moles of chromium(iii) nitrate are produced when chromium reacts with 0.85 moles of lead(iv) nitrate to produce chromium(iii) nitrate and lead?
URGENT PLEASEEEE HELPA functional group is a specific arrangement of atoms in an organic compound that is capable of characteristic reactions Is this true of false PLEASE HELPP NO LINKSS

Pleaseeeeeeeeeeeeee please helpYou have learned that the atomic number of a chemical is the number of protons found in the nucleus. Atomic numbers can be used to find the number of neutrons and electrons in an atom. In this project, you will practice atomic mass and atomic mass number calculation as well as fill out a chart using the periodic table. Don’t forget to read through the rubric below, so you will know what you will be graded on. When you are ready, upload it replacing the “Lastname” in the saved document name with your last name.
Part I:
The atomic number of the sodium atom is 11. The atomic mass number can be estimated by rounding the atomic mass to 23. From this information, you can find the number of neutrons: 11 protons plus how many neutrons equals a mass number of 23? The number of neutrons would have to be the difference between 23 and 11, which is 12. This fact can be restated this way: 11 protons plus 12 neutrons equals a mass number of 23. For every proton in the nucleus, an electron revolves around the nucleus. Since 11 protons are in sodium, 11 electrons must be in sodium.
Using this information and the Periodic Table from lesson titled Periodic Table fill in the chart below.

Element Atomic Number Atomic Mass How many neutrons? How many electrons? How many protons?
Sodium 11 23 12 11 11
Chlorine
Carbon
Lead
Iron
Magnesium
Uranium
Cobalt
Calcium
Platinum
Phosphorus

Answers

Answer:

Chlorine - 17,35.45,18,17,17

Carbon - 6, 12.01,6, 6,6

Lead - 82, 207.2,125,82,82

Iron - 26, 55.847, 30, 26,26

Magnesium - 12, 24.305, 12,12,12

Uranium - 92, 238.09, 146,92,92

Cobalt - 27, 58.933,32, 27,27

Calcium - 20, 40.078, 20,20,20

Platinum - 78, 195.078,117, 78,78

Phosphorus - 15, 30.974, 16, 15,15

Explanation: https://hobart.k12.in.us/ksms/PeriodicTable/abc.htm

Mercury has a specific gravity of 13.6. how many milliliters of mercury have a mass of 0.35 kg

Answers

The formula for specific gravity is:

Specific gravity = (\rho _(substance))/(\rho _(water))

where \rho _(substance) is the density of the substance and \rho _(water) is the density of water.

The density of water, \rho _(water) = 1 g/mL

Substituting the values in above formula we get,

13.6 = (\rho _(substance))/(1)

\rho _(substance) = 13.6 g/mL

The formula of density is:

density = (mass)/(volume)

The density of mercury is 13.6 g/mL

The mass of mercury is 0.35 kg = 0.35 kg * 1000 (g)/(kg) = 350 g

Substituting the values in density formula:

13.6 g/mL = (350 g)/(volume)

volume = (350 g)/(13.6 g/mL) = 25.73 mL

The amount, in milliliters, of mercury that will have a mass of 0.35 kg would be 25.74 mL.

If the specific gravity of mercury is 13.6, the density can be obtained such that:

Density of mercury = specific gravity of mercury/density of water

The density of water is 1 g/mL. Thus:

Density of mercury = 13.6/1

                              = 13.6 g/mL

Also; density = mass/volume

       volume = mass/density

                    = 350/13.6

                       = 25.74 mL

Thus, the number of milliliters of mercury that will have a mass of 0.35 kg would be 25.74.

More on density can be found here: brainly.com/question/14940265?referrer=searchResults

If the current in a wire is directed upward, what is the direction of the magnetic field produced by the current?

Answers

Horizontal if I am correct

An electron in an atom moves from the ground state to an excited state when the energy of the electron(1) decreases
(2) increases
(3) remains the same

Answers

The answer is (2) increases. The definition of excited state is that the electrons have higher energy than ground state. For comprehension, the excited state is ready for reaction so it has higher energy.

An electron in an atom moves from a ground state to an excited state when the electron energy increases

Further Explanation

Excitation in physics is the addition of a number of discrete energies (called excitation energies) to a system — such as the nucleus of an atom, atom, or molecule — so as to produce a change, usually from the lowest energy state (ground state) to one of the higher energies (excited state).

In nuclear, atomic and molecular systems, excited states do not continue to be distributed but instead have certain discrete energy values. Thus, external energy (excitation energy) can be absorbed in discrete quantities.

Excitation energy is stored in excited atoms and the nucleus that emits light is usually seen from atoms and as gamma radiation from the nucleus because they return to the ground state. This energy can also be lost by collisions.

In the nucleus, energy is absorbed by protons and neutrons which are transferred to an excited state. Within a molecule, energy is absorbed not only by electrons, which are very enthusiastic for higher energy levels but also by whole molecules, which are highly excited for the discrete states of vibration and rotation.

Learn More

Electron moves brainly.com/question/496960

Excitation brainly.com/question/496960

Details

Class: High School

Subject: Chemistry

Keywords: electron, excitation, energies

What does the nucleus of one atom want to do to the electrons of a nearby atom?

Answers

The nucleus of an atom is positively charged and the electrons are negatively charged therefore, the nucleus of an atom attracts the electrons around it and this nature is called nuclear charge.

What is the nuclear charge?

Each electron in an atom experiences two kinds of force one is an attraction to the nucleus and another is repulsion from other electrons. The presence of many electrons makes more repulsive force and this decreases the nuclear attraction.

The amount of nuclear charge is the positive charge experienced by an electron that is present in a multi-electron atom. The attractive interaction between the nucleus of an atom and electrons of the same atom increases with the increase of positive charge (+Ze) on the nucleus.

This attraction for the valence electrons will be lower because of the  Shielding of inner shell electrons. Due to the shielding of inner-shell electrons, the valence electrons will not experience the positive charge of the nucleus entirely while electrons close to the nucleus feel maximum attraction and have the lowest energy.

Learn more about nuclear charge, here:

brainly.com/question/15874485

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It wants to bond with the nearby atom, which means it attracts its electrons so that it may become stable. A stable atom has 8 valence electrons. 

Which of the following statements is not correct?0.20 mole of O2 = 6.4 g
0.75 mole of H2CO3 = 47 g
3.42 moles CO = 95.8 g
4.1 moles Li2O = 94 g

Answers

Answer:

4.1 moles Li2O = 94 g (incorrect)

4.1 mole of Li2O = 122.6g(correct)

Explanation:

1. Molar mass of O2 = 32

0.2 mole of 32 = 0.2×32 = 6.4g (correct)

2. Molar mass of H2CO3 = 62.03

0.75 mole of 62.03 = 0.75×62.03 = 46.5g (47 is correct)

3. Molar mass of CO = 28

3.42 moles of 30 = 3.42×28 = 95.76 (95.8 is correct)

4. Molar mass of Li2O = 29.9

4.1 mole of Li2O = 4.1×29.9 = 122.59g (94g is incorrect)

Answer:

It's 4.1 moles Li2O = 94 g on Odyssey ware

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