COMO HA CONTRIBUIDO JUNTO A LA MOLALIDAD Y LA NORMALIDAD, CON EL DESARROLLO TECNOLOGICO Y DE LA HUMANIDAD.

Answer:

D. It has one valence electron is Answer.

Explanation:

I hope it's helpful!

The correct answer is A. Charging by friction

Explanation

When someone rubs a comb with their hair when they are combing it and the hair sticks to the comb occurs a phenomenon called electrization, in which a neutral body becomes charged or loses an electrical charge (electrons). One way that electrization occurs is through the rubbing of two neutral bodies which causes one to be positively charged and the other negatively causing them to attract each other by magnetism. Therefore, the correct answer is A. Charging by friction

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:

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:

CH2

Explanation:

Answer:

26.981538 just looked at it.

Answer:

Explanation:

The is barium and oxygen in here

barium+ oxygen-> barium oxide

barium + oxygen ->  barium peroxide

Answer:

seven

Explanation:

There are major, minor and micro tectonic plates. There are seven major plates: African, Antarctic, Eurasian, Indo-Australian, North American, Pacific and South American. The Hawaiian Islands were created by the Pacific Plate, which is the world's largest plate at 39,768,522 square miles.

Answer:

endothermic change occurs

Explanation:

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

hope this helps

Answer:

2Mg+O2=2MgO

balanced equation

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Answer:

Oroduct is mgo and it is balanced equation

Because both MG and o² have valence 2

Firstly ALKANES FORMULA IS CnH2n+2

C4H10 Butane

C5H12 Pentane

C7H16 Hectane

C8H18 Octane

C9H20 Nonane

1 moles Carbon to grams = 12.0107 grams

2 moles Carbon to grams = 24.0214 grams

3 moles Carbon to grams = 36.0321 grams

4 moles Carbon to grams = 48.0428 grams

5 moles Carbon to grams = 60.0535 grams

6 moles Carbon to grams = 72.0642 grams

7 moles Carbon to grams = 84.0749 grams

8 moles Carbon to grams = 96.0856 grams

9 moles Carbon to grams = 108.0963 grams

10 moles Carbon to grams = 120.107 grams

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 60g is the mass of  5.00 moles of carbon.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

Mathematically, the formula for mole can be given as

mole of carbon =given mass of carbon  ÷ molar mass of carbon

number of mole of carbon=  5.00 moles

mass of carbon=?

molar mass of carbon= 12.0107 grams

Substituting the values in above formula we get

5.00 moles  = mass of carbon  ÷12.0107 grams

On calculations, we get

mass of carbon =60g

Therefore, 60g is the mass of  5.00 moles of carbon.

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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: 2:2 but if simplified it’s 1:1

Explanation:

mmg mmñm

Explanation:

no lo seeee123456789

Answer:

12.21 x 10⁻¹ m

Explanation:

Given:

(2.22 x 10⁶cm) x (5.5 x 10⁻⁵m)

Find:

Solution;

Computation:

(2.22 x 10⁶cm) x (5.5 x 10⁻⁵m)

[2.22 x (10⁶/100)m] x (5.5 x 10⁻⁵m)

[2.22 x 10⁴m] x (5.5 x 10⁻⁵m)

12.21 x 10⁻¹ m

Answer:

why was my answer deleted, was it wrong?

Explanation:

Answer: atoms/molecules

Explanation:

Answer:

3.81 g NH3

Explanation:

friends with chemist

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).

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chemical reactions in the kitchen

Baking soda and vinegar create carbon dioxide. In both of these cases, a chemical reaction between a solid and liquid creates a new substance, a gas. Both yeast and baking soda can be used to create a gas.

chemical reactions in living things

when you hard boil an egg, the hydrogen sulfide produced by heating the egg white can react with iron from the egg yolk to form a grayish-green ring around the yolk.

Answer: [Kr] 5s24d10 is the element Cadmium, Cd. It has 48 electrons.

Answer:

14.3% C

Explanation:

27.36 + 1.20 + 57.14 = 85.7

100 - 85.7 = 14.3%

It's called a breeze

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

Answer:

False

Explanation:

Left:

K = 2 atoms

O = 1 atoms

H = 1 atoms

Right:

K = 2 atoms

O = 1 atoms

H = 2 atoms

O = 1 atoms

As you can see both sides do not have the same amount of atoms, therefore it is not balanced.

:)

1.chloride

2.sulfate

3.ferric

4.bromide

5.binary

6.ammonium

7.nirate

8.fluroide

give me brainliest as per your question ok

Answer:

6; barium sulfate

7; chromium (III) carbonate