Uzupełnij zapis powstawania jonu z atomu. Podaj liczby protonów i elektronów wjonie.( ... / 2 p.)a) S ................. → S2–b) K ..................... → K+ liczba protonów: ........... Liczba protonów: ........... Liczba elektronów: .......... Liczba elektronów: ..........

Answer:

decomposition

K and Cl2

Explanation:

Answer:

Farther; longer.

Explanation:

In the early nineties When the research on solar system first started it was found out that the solar system has 9 planets which are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. Pluto which is considered as the number 9 of the planets in the solar system has been removed in the year 2006 and labelled as a "dwarf planet'' hence, Neptune is considered as the farthest planet from the Sun.

The farther the planets are from the sun, the longer it will take them to orbit round the sun. For instance, it only takes around 87.97 days for mercury(first planet nearer to the sun) to orbit round the sun, while it takes the earth (third planet nearer to the sun) 365 1/4 days to orbit round the sun.

Answer:

endothermic change occurs

Explanation:

photosynthesis, is an endothermic reaction in which energy is absorbed from the surrounding.

hope this helps

Answer:

As time increases, C-15 (Carbon) decreases. During radioactive decay, the amount of Carbon in a substance undergoes half-lives (A sample could have  a half life of 1002 years, for example.) When that substance ages to that timeframe, it loses half of its mass. Then for the next half-life, it loses half of that new mass, and so on.

Answer:

True

Explanation:

Answer: Because sulfur is directly below oxygen in the periodic table, these elements have similar electron configurations. As a result, sulfur forms many compounds that are analogs of oxygen compounds, as shown in the table below. ... O=O. double bonds are much stronger than S=S double bonds.

Answer:

four

Explanation:

adenine, thymine, guanine, and cytosine

Answer:

the answer is b

Explanation:

Answer:

Acidity and alkalinity are measured using a pH scale, for which 7.0 is neutral. The lower a substance's pH (less than 7), the more acidic it is; the higher a substance's pH (greater than 7), the more alkaline it is. Average rain has a pH of about 5.6; it is slightly acidic because carbon dioxide (CO2) dissolves into it, forming weak carbonic acid. Acid rain usually has a pH between 4.2 and 4.4. The most common nitrogen-related compounds emitted into the air by human activities are nitrogen oxides. Ammonia is another nitrogen compound emitted into the atmosphere, primarily from agricultural activities and fossil fuels. Most of the nitrogen oxides released in the U.S. due to human activity are from the burning of fossil fuels associated with transportation and industry.  

Explanation:

Answer:

Explanation:

Step One

Find the molar Mass of NH3

N =   14

3H =  3

Mass = 17

Step Two

Find the number of moles of NH3

mols = given mass / Molar Mass

given mass = 824 grams

molar mass = 17

mols = 824/17

mols =  48.47

Step Three

Find the moles of NO

Here you have to look at the balanced equation

Every 2 mols of HN3 produces 2 mols of NO

So the number of mols of NH3 = 48.47

The number of mols of  NO      = 48.47

Step Four

Find the mols of H2O

2 mols of NH3 produces 3 moles of H20

48.47 mols H20 produces x moles of H20

3/x = 2/48.47     Cross Multiply

2x = 3*48.47

2x = 145.41         Divide by 2

x = 145.41/2

x = 72.71            mols of water.

Answer:

26.981538 just looked at it.

[He] 2s² 2p⁴

Explanation:

just look it up

Answer:

[He] 2s² 2p⁴.................

Answer: you would use a weak base, as you want to combat acidity but do not want to damage your stomach. an example is tums™ which use carbon carbonate, a base.

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The average kinetic energies of gas molecules are the same, but the smaller or lighter molecules have more velocities. Therefore, option (B) is correct.

The average kinetic energy of a molecule can be described as:

[tex]{\displaystyle K.E.=\frac{3}{2}kT[/tex]

Where T is temperature (K) and k is Boltzmann constant.

All molecules of a gas are identical in mass and size but they differ from gas to gas. The gas molecules are separated by large distances so that the real volume of the molecules is negligible as compared to the total volume.

The force of attraction between molecules is negligible and molecules are supposed to be moving in different directions with different velocities. The collision between gas molecules is perfectly elastic so that no energy is wasted during a collision.

Since gas molecules are moving at different velocities ao they possess different kinetic energies. The average kinetic energy is directly proportional to the temperature (Kelvin).

Learn more about average kinetic energy, here:

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Answer:

This is the balanced equation I believe-

6CO2 + 6H2O → C6H12O6 + 6O2

However, that is without the HV because I’m not sure what the hv means.

Answer: Silicon dioxide

Explanation:

di is 2 and since oxygen is 2

Answer:

Atoms are neutral. They contain the same number of protons and electrons. An ion is an electrically charged particle produced by either removing electrons from a neutral atom to give a positive ion or adding electrons to a neutral atom to give a negative ion.

Explanation:

Hope this helped

Firstly ALKANES FORMULA IS CnH2n+2

C4H10 Butane

C5H12 Pentane

C7H16 Hectane

C8H18 Octane

C9H20 Nonane

Answer:

14.3% C

Explanation:

27.36 + 1.20 + 57.14 = 85.7

100 - 85.7 = 14.3%

Answer:

2Mg+O2=2MgO

balanced equation

hope it helps.

Answer:

Oroduct is mgo and it is balanced equation

Because both MG and o² have valence 2

Answer:

wait so what am I supposed to do

Answer:

Explanation:

Knowing locations of laboratory safety showers is important because you could have spilled some dangerous chemical on your skin. Knowing where the eye washing stations is important if you get something dangerous in your eyes. Knowing where the fire extinguisher is also important because if there is a fire and you cannot evacuate, you have a good chance of putting it out with the fire extinguisher. Knowing the emergency exit route is important because if there is a fire or something along those lines, you need to evacuate as soon as possible and not be searching for exits, you should be on the move.

Answer:

Tin(IV) oxide, also known as stannic oxide, is the inorganic compound with the formula SnO₂. The mineral form of SnO₂ is called cassiterite, and this is the main ore of tin. With many other names, this oxide of tin is an important material in tin chemistry. It is a colourless, diamagnetic, amphoteric solid.

Formula: SnO₂

Molar mass: 150.71 g/mol

Melting point: 1,630 °C

Density: 6.95 g/cm³

Aluminium oxide is a chemical compound of aluminium and oxygen with the chemical formula Al₂O₃. It is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium(III) oxide.

Formula: Al₂O₃

Molar mass: 101.96 g/mol

Melting point: 2,072 °C

Density: 3.95 g/cm³

Boiling point: 2,977 °C

ChemSpider ID: 14086

ChemSpider ID: 26988

Silver sulfide is an inorganic compound with the formula Ag ₂S. A dense black solid, it is the only sulfide of silver. It is useful as a photosensitizer in photography. It constitutes the tarnish that forms over time on silverware and other silver objects.

Formula: Ag2S

Molar mass: 247.8 g/mol

Density: 7.23 g/cm³

ChemSpider ID: 145878

Copper(II) sulfate, also known as copper sulphate, are the inorganic compounds with the chemical formula CuSO₄ₓ, where x can range from 0 to 5. The pentahydrate is the most common form. Older names for this compound include blue vitriol, bluestone, vitriol of copper, and Roman vitriol.

Formula: CuSO4

IUPAC ID: Copper(II) sulfate

Molar mass: 159.609 g/mol

Density: 3.6 g/cm³

Melting point: 110 °C

Soluble in: Water

Potassium carbonate is the inorganic compound with the formula K₂CO₃. It is a white salt, which is soluble in water. It is deliquescent, often appearing as a damp or wet solid. Potassium carbonate is mainly used in the production of soap and glass.

Formula: K2CO3

Molar mass: 138.205 g/mol

IUPAC ID: Potassium carbonate

Density: 2.43 g/cm³

Melting point: 891 °C

Soluble in: Water

Explanation:

Hope it is helpful....

Answer:

3.81 g NH3

Explanation:

friends with chemist

William Shakespeare (bapt. 26 April 1564 – 23 April 1616)[a] was an English playwright, poet, and actor, widely regarded as the greatest writer in the English language and the world's greatest dramatist.[2][3][4] He is often called England's national poet and the "Bard of Avon" (or simply "the Bard").[5][b] His extant works, including collaborations, consist of some 39 plays,[c] 154 sonnets, two long narrative poems, and a few other verses, some of uncertain authorship. His plays have been translated into every major living language and are performed more often than those of any other playwright.[7] They also continue to be studied and reinterpreted.

Shakespeare was born and raised in Stratford-upon-Avon, Warwickshire. At the age of 18, he married Anne Hathaway, with whom he had three children: Susanna and twins Hamnet and Judith. Sometime between 1585 and 1592, he began a successful career in London as an actor, writer, and part-owner of a playing company called the Lord Chamberlain's Men, later known as the King's Men. At age 49 (around 1613), he appears to have retired to Stratford, where he died three years later. Few records of Shakespeare's private life survive; this has stimulated considerable speculation about such matters as his physical appearance, his sexuality, his religious beliefs, and whether the works attributed to

Answer:

violet

Red has the longest wavelength and violet has the shortest wavelength. When all the waves are seen together, they make white light. Ultraviolet (UV) light—is radiation with a wavelength shorter than that of visible light, but longer than X-rays, in the range 10 nm to 400 .

Explanation:

1.chloride

2.sulfate

3.ferric

4.bromide

5.binary

6.ammonium

7.nirate

8.fluroide

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Answer:

6; barium sulfate

7; chromium (III) carbonate