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Answer:

The phenomena of the physical world at together which includes plants, animals, the landscape, and other features and products of earth as opposed to humans or human creations

Answer:

D. it formed by petrifaction

Explanation:

Petrifaction is the process of petrifying, fossilizing, or preserving wood; hence, "petrified wood."

Answer:9

Explanation:

F is Flourine on the periodic table; the atomic number of Flourine is 9

caution: when you say “20 F” your meaning is unclear. regardless of what you mean, though, the atomic number of F is 9

Answer:

Lighting Bunsen Burner:

Explanation:

Close needle valve and collar. Open gas valve fully. Open needle valve 1/2 turn. Use the spark/lighter to light the flame.

Answer:

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Un elemento del grupo 3 es un elemento situado dentro de la tabla periódica en el grupo 3. Los átomos de estos elementos tienen gran tendencia a oxidarse y son muy reactivos, predominando el estado de oxidación +3. Presentan propiedades muy similares al aluminio. Dan lugar a iones incoloros.

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An element of group 3 is an element located within the periodic table in group 3. The atoms of these elements have a great tendency to oxidize and are very reactive, with the +3 oxidation state predominant. They have properties very similar to aluminum. They give rise to colorless ions.

Explanation:

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Group -> 3

Group -> 3Period

Group -> 3Period4 21

Group -> 3Period4 21Sc

Group -> 3Period4 21Sc5 39

Group -> 3Period4 21Sc5 39Y

Group -> 3Period4 21Sc5 39Y6 57

Group -> 3Period4 21Sc5 39Y6 57The

Group -> 3Period4 21Sc5 39Y6 57The7 89

Group -> 3Period4 21Sc5 39Y6 57The7 89Ac

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Grupo -> 3

Grupo -> 3Periodo

Grupo -> 3Periodo4 21

Grupo -> 3Periodo4 21Sc

Grupo -> 3Periodo4 21Sc5 39

Grupo -> 3Periodo4 21Sc5 39Y

Grupo -> 3Periodo4 21Sc5 39Y6 57

Grupo -> 3Periodo4 21Sc5 39Y6 57La

Grupo -> 3Periodo4 21Sc5 39Y6 57La7 89

Grupo -> 3Periodo4 21Sc5 39Y6 57La7 89Ac

Answer:

Explanation:

There are only two elements in the first period: hydrogen and helium. We can explain why there is less elements in the first row in modern theories of atomic structure.

Answer:

"Hydrogen and Helium". Hydrogen and Helium are the elements of the first period in the modern periodic table.

Explanation:

Answer:

The more spread out their energy becomes

Answer:

4 moles of potassium chlorate must be used to produce 6 moles of oxygen gas.

Explanation:

From the above reaction:

2KCIO3(s) - 2KCl(s) + 3O2(g)

where,

KCl = Potassium Chloride,

O2 = Oxygen

KClO3 = Potassium chlorate

To calculate the number of moles for KClO3

If 3 moles of O2 gives 2 moles of KClO3

then 6 moles of O2 gives 6/3 x 2 = 4 moles of KClO3.

Hence, 4 moles of KClO3 produces 6 moles of O2.

Moles are "a unit of measurement for chemicals, just as meters are measurement units for length and grams are measurement units for mass".

What is Potassium Chloride?

Potassium Chloride is a "metal halide composed of potassium and chloride".

Oxygen is "an element with atomic symbol O, atomic number 8, and atomic weight 16".

Potassium chlorate is "an important potassium compound that can be used as an oxidizer, disinfectant, source of oxygen, and component in pyrotechnics and chemistry demonstrations".

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Answer: This type of reaction is a synthesis reaction.

Explanation: Reaction information:Sulfur Dioxide + Dioxygen + Water = Sulfuric Acid

If I balanced it, it would be 2SO2 + O2 + 2H2O → 2H2SO4

Answer:

the answer is b........

Answer:

no habla espanol

Explanation:

Answer:

Three lithium and one nitrogen atoms

Answer:

A flame is defined as the gaseous part of the fire which is visible to us. A flame is created due to the high exothermic reaction.

Two types of flames based on the amount of oxygen available are:

Answer:

In a nuclear fusion reaction, the nuclei of two atoms combine to create a new atom. Most commonly, in the core of a star, two hydrogen atoms fuse to become a helium atom. Although nuclear fusion reactions require a lot of energy to get started, once they are going they produce enormous amounts of energy.

Explanation:

Answer:

1429.32 mmHg

Explanation:

Initial Pressure P1 = 3000.0mmHg

Initial Temperature T1 = 500.0°C + 273 = 573 K ( Converting to kelvin temperature)

Final Temperature T2 = 0.00°C + 273 = 273 K ( Converting to kelvin temperature)

Final Pressure P2 = ?

The pressure of a given amount of gas is directly proportional to the absolute temperature provided volume remains constant.

This is given by the mathematical expression;

P1 / T1  = P2 / T2

Inserting the values;

3000 / 573 = P2 / 273

P2 = 273 * 3000 / 573

P2 = 1429.32 mmHg

Answer:

A is the right answerA is the right answerA is the right answerA is the right answer

Explanation:

Answer:

See explanation

Explanation:

The equation of the reaction is;

C (s) + O2(g) ------> CO2(g)

a) From the equation we can see that it is a 1:1 reaction hence, 1 mole of carbon yields 1 mole of CO2

b) Similarly, 1 * 10^3 moles of Carbon  also yields 1 * 10^3 moles of CO2.

Answer:

Solfuric Floride

Nitrodgen Oxide

Clorine oxide

Sulfur Cloride

Explanation:

IM A CHEMISTRY WIZ

Answer:

The carbon anode

Explanation:

The carbon anode is continually replaced because it burns off as carbon IV oxide gas by reacting with the oxygen had produced at the anode.

Answer:

Neon is a chemical element with the symbol Ne and atomic number 10. It is a noble gas.

Answer:

Neon is the element which is in serial number 10 in the periodic table.

Neon is one of the noble gases, i.e., they are stable (talking about NOBLE GASES)

Answer:

Explanation:

Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

Answer:

At birth, there are approximately 1 million eggs; and by the time of puberty, only about 300,000 remain. Of these, only 300 to 400 will be ovulated during a woman's reproductive lifetime. Fertility can drop as a woman ages due to decreasing number and quality of the remaining eggs.

Explanation:

Hope This Helps!!

Answer:

One egg per month usually .

Explanation:

This is the single egg that makes it through the whole ovulatory process

Answer:

b) ions

Explanation:

Answer: all of the above

Explanation:

Answer:

Answer:

The abundance of 35/17 Cl is 75% and 25% of 37/17Cl

Explanation:

The molar mass of an atom is defined as the sum of the masses of each isotope times its abundance, that is:

35.5amu = 35amu*X + 37amu*Y (1)

Where X is the abundance of the 35/17Cl and Y the abundance of 37/17 Cl

As there are just these 2 isotopes and the abundances of both isotopes = 1:

X + Y = 1 (2)

Replacing (2) in (1):

35.5 = 35X + 37(1-X)

35.5 = 35X + 37 - 37X

-1.5 = -2X

X = 0.75 = 75%

And Y = 100-75% = 25%

Sulfur is not nearly as electronegative as oxygen so that hydrogen sulfide is not nearly as polar as water. Because of this, comparatively weak intermolecular forces exist for H2S and the melting and boiling points are much lower than they are in water.

The boiling point of hydrogen sulfide is low because the oxygen atom was stronger electronegative than that of the Sulphur atom, water would be more polar than hydrogen sulphide.

If a molecule does have more positive charges on one end than negative charges on the other, an electrical pole has been created. This is how polar molecules are typically formed.

What is boiling point?

The temperature where a liquid's vapor pressure reaches the pressure around it as well as the liquid transforms into a vapor is known as the boiling point of a substance.

The boiling point of hydrogen sulfide is low because the oxygen atom was stronger electronegative than that of the Sulphur atom, water would be more polar than hydrogen sulphide. Additionally, hydrogen sulphide has a lesser melting point as well as boiling point than water due to poor intermolecular forces (dipole forces, Vander Waal's forces).

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