What element does hydrogen on in ?

- metals
- non metals
- metalloids

Answer:

600K

Explanation:

P1/T1 = P2/T2

T2 = P2T1/P1

T2 = (1.5atm)(400K)/1atm

T2 = 600K

Answer:

The gun-type assembly uses a conventional explosive to compress from one side, while the implosion assembly compresses from all sides simultaneously. The immediate energy release per atom is about 180 million electron volts (Me).

Explanation:

The number of particles in 28.5 g of sodium chloride, NaCl is 2.93×10²³ particles

From Avogadro's hypothesis,

1 mole of NaCl = 6.02×10²³ particles

But,

1 mole of NaCl = 23 + 35.5 = 58.5 g

Thus, we can say that:

58.5 g of NaCl = 6.02×10²³ particles

58.5 g of NaCl = 6.02×10²³ particles

Therefore,

28.5 g of NaCl =

[tex] \frac{28.5 \times 6.02 \times {10}^{23} }{58.5} [/tex]

Thus, the number of particles in 28.5 g of sodium chloride, NaCl is 2.93×10²³ particles

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Answer:

Explanation:

if matter is made of many tiny particles, why does it seem to be continuous? Why doesn’t water seem to behave like sand?

Water and some other molecules exhibit a property know as hydrogen bonding.  A hydrogen atom in one molecule of water is attracted to the oxygen in a neighboring molecules of water.'

The force of this attraction is less than a standard chemical attractive force, but it is real and measurable.

When billions and trillions of water molecules are held together by this force, the small amount of molecule to molecule force is added up to a tremendous force.  That is why even though sulfur is below oxygen on the periodic table, hydrogen sulfide is a gas while hydrogen oxide is a liquid at room temperature.

Hydrogen bonding explains the unique properties of ice, liquid water and steam,We all know water exists in several forms such as solid, liquid and ice. Water boils at 100  C and freezes at 32  F, right? Am I correct? Let us look at some of the chemistry behind forms of water.  

The strong polar bond between water molecules creates water cohesion.

As they are cooled, aggregates of most other substances increase monotonically in density becoming progressively heavier -- the colder they are, the more tightly packed their molecules become. But water possesses a peculiar physical feature: ice expands, so it is lighter than liquid water (i. e., ice floats). When water trapped in rock crevices freezes, it breaks rocks (and pipes).

Water is vital to all known life forms, that is, all those on planet Earth. It is so integral to life as we know it that many biologists cannot even envision life without water (although that might be possible). Indeed, the physical properties of water dictate critical thermal limits for living systems.

In one sci-fi story, an alien refers to humans as "ugly bags of mostly water" -- our bodies are about 60-70% water, depending upon how dehydrated we are at any given time. Humans use massive amounts of freshwater to drink, cook, bathe, flush toilets, do laundry, fill swimming pools, irrigate yards and gardens, run flowing fountains, and for recreation. Precious clean water is often wasted, such as when people leave tap water running while washing their hands or brushing their teeth. The personal water consumption of an average American is about 200 gallons per day, but when industrial and energy usage is added in, per capita freshwater usage is more than 2000 gallons/day. People in third world countries use much less water, of course.

Most freshwater is claimed or "owned" and there is not enough to go around. Approximately half of the world's population of people do not even have adequate access to clean drinking water. One of the major symptoms of the human overpopulation crisis is shortages of available fresh water. Wars will be fought over water.

Hydrogen bonding is a property of water and some other molecules. A hydrogen atom in one water molecule is attracted to an oxygen atom in another water molecule.

Matter is a substance composed of various particle types that occupies physical space and has inertia.

According to modern physics principles, each type of particle has a distinct mass and size. The electron, proton, and neutron are the most well-known examples of material particles.

Atoms and molecules are tiny particles that make up solids, liquids, and gases.

This attraction has a lower force than a standard chemical attractive force, but it is real and measurable.

When this force holds billions and trillions of water molecules together, the small amount of molecule to molecule force adds up to a tremendous force.

Thus, due to these bonds, the water does not seem to behave like sand.

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Answer:

The Heat Deflection Temperature (HDT) 126 °F (52 °C)

Density 1.24 g/cm³

Tensile Strength 50 MPa

Flexural Strength 80 MPa

Explanation:.

Answer:

yes he forced up then avoid it

Answer:

twenty-four grams of magnesium metal reacts with sixteen grams of oxygen gas to form magnesium oxide. According to the law of conservation of mass, how much magnesium oxide will there be after the chemical change is complete

Explanation:

twenty-four grams of magnesium metal reacts with sixteen grams of oxygen gas to form magnesium oxide. According to the law of conservation of mass, how much magnesium oxide will there be after the chemical change is complete

Answer:

12.5% is left

Explanation:If the half-life of a reaction is 6 days. What percentage of material is left after 18 days?

18 days/6 days = 3 half lives

each half life you lose half the material

in 3 half lives you have (1/2)x (1/2) x (1/2) =1/8

1/8 =0.125 so 12.5% is left

The positive effect of using chemistry is the generation of energy without fossil fuels.

Chemistry is the branch of science that deals with the study of the nature, properties and composition of matter as well as the changes that matter undergoes. Chemistry has really contributed positively to the advancement of the society.

Lately, there has been a lot of emphasis on alternative sources of energy apart from fossil fuels. One such options is the use of hydrogen fuels. Chemistry has been at the forefront of this research.

Hence, one positive effect of using chemistry is that energy can be generated without burning fossil fuels.

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Answer:

its D.

Explanation:

Answer:

s-2 p-6 d-10 f-14

Explanation:

s orbital max can fit 2 electrons

p orbital max can fit 6 electrons

d orbital max can fit 10 electrons

f orbital max can fit 14 electrons

Answer:

picture 1:gain electrons and become negative ions.

picture 2:carbon and oxygen have different electronegativities.

picture 3: A

Answer:

Equal

Explanation:

At equilibrium, the concentrations of the reactants and products will be equal.

Answer:

The element phosporus is located to the right of the element magnesium along the same period in the periodic table. Which best describes the relationship of the elements? Magnesium has a larger atomic number.

Answer:

E

Explanation:

Answer:

Nitrogen, the next nonmetal, has 5 electrons in the valence shell, so it needs to combine with 3 hydrogen atoms to fulfill the octet rule and form a stable compound called ammonia (NH3).

The covalent compound formed from nitrogen and hydrogen is called ammonia with the formula NH₃.  Each hydrogen shares its valence electron with three valence electrons of nitrogen.

Ammonia,  NH₃ is a covalent compound formed by the combination of nitrogen and three hydrogen atoms. Nitrogen is a highly electronegative element with 5 valence electrons.

Nitrogen needs 3 more electrons to achieve octet. Hence valency of nitrogen is 3. During chemical bonding it gains three electrons though sharing or donation from metals.

Hydrogen needs one more electron to be stable. Hence, nitrogen shares its three valence electrons each with three hydrogens and each hydrogen in turn shares its one valence electron with nitrogen forming NH₃.

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Answer:

The Bismuth atom

Explanation:

it contains 83 atoms, 5 of which are valence electrons. These 5 electrons are accommodated in the 6s and 6p orbital.

Answer:B

Explanation:

Answer: Cork grows naturally in only two areas of the world: the Mediterranean region of Europe – particularly the Iberian Peninsula, where Portugal and Spain produce more than 80% of the world's cork – and Northwest Africa.

Explanation:

Answer:

Explanation:The Î""G°′ of the reaction is −7.180 kJ·mol−1. Calculate the equilibrium constant for the reaction at 25 °

Answer:

Explanation:

Halogen: Cl2

Alkali metal: Na

Lanthanide: Promethium

Transition metal: Gold

Alkaline Earth metal: Beryllium

Noble Gas: Neon

When a bath bomb comes in contact with water, the baking soda and citric acid react to make carbon dioxide bubbles. This is an acid–base reaction, where baking soda (also called sodium bicarbonate) is a weak base and citric acid is a weak acid.

Answer:

Chemical defense

Explanation:

so we know it cant be mimicry because that means to mimic another animal for defense.

It cant be camouflage because it would be pretty d*mn hard to hide with neon colors.

So that leaves you with chemical defense and warning coloration

Answer:

1s22s22p6

Explanation:

Nitride anion N3-, has additional 3 electrons than N atom. So just add 3 more to the configuration

p orbitals can occupy a total of 6 electrons so when we add 3 more it becomes 2p6

Answer:

density = mass divided by volume

Explanation:

96.5 divided by 5

=19.3

answer = 19.3 g/cm 3

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Answer:

coz they have low ionization as well as several empty orbitals in their outer shells ( I think)

I think its nitrogen, im not sure tho

Answer:

a Pure substance contains of only one element or 1 compound

Explanation:

Substances such as Nitrogen, water, and oxygen,

are pure substances because they have a secure chemical composition throughout it's molecules. So basically they are substances or compounds with distinct chemical properties and a constant composition.

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