What structure contains ions that are arranged in an alternative repeating 3-D pattern ?

QUESTION POSTED AT 13/11/2019 - 05:20 PM

Answered by admin AT 13/11/2019 - 05:20 PM

I hope this help crystal lattic
     
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Related questions

Why does sodium form a 1+ ion but magnesium forms a 2+ ion

Because Na has one too many electron to be stable, while Mg has 2. once they loose those electrons, they will be come ion. loosing one electron will give the ion a 1+ charge, and loosing 2 will create a 2+ charge

ANSWERED AT 06/12/2019 - 09:45 AM


QUESTION POSTED AT 06/12/2019 - 09:45 AM

Approximately how long has the Moon been geologically inactive? A. 1 billion years B. 3 billion years C. 4 billion years D. 4.5 billion years

The moon had been geologically inactive for B. 3 billion years

ANSWERED AT 06/12/2019 - 08:48 AM


QUESTION POSTED AT 06/12/2019 - 08:48 AM

After data are collected, they are often arranged in a(n) ___________???

Data are often arranged in some sort of table or spreadsheet. This allows the researcher(s) to be able to run statistical models on the data as a way of finding and understanding trends that may occur. This table also gives a form of proof for those looking to replicate the findings.

ANSWERED AT 06/12/2019 - 07:42 AM


QUESTION POSTED AT 06/12/2019 - 07:42 AM

What happens when fluorine becomes an ion

When fluorine becomes an ion by gaining an electron on it's shell , it becomes a a negatively charged atom.

ANSWERED AT 05/12/2019 - 11:02 PM


QUESTION POSTED AT 05/12/2019 - 11:02 PM

Compare the arrangements of individual particles in solids, liquids, and gases

Solids - particles are very close together (highest density on the list)
Liquids - the particles slide past one another
Gases - particles bounce off of surroundings and the same particles of the gas

ANSWERED AT 05/12/2019 - 10:26 PM


QUESTION POSTED AT 05/12/2019 - 10:26 PM

Knowledge of atomic structure has evolved over time. Thomson discovered that atoms contain electrons, Rutherford discovered that most of the mass of an atom is concentrated in its center, and Bohr discovered that electrons orbit the nucleus. Taken together, what do these discoveries demonstrate

  J.J. Thompson's plum pudding model was devised after the discovery of electron but before the discovery of the nucleus of the atom. Rutherford, who overturned Thompson's plum pudding model proposed that on his experiment (Rutherford model) he discovered that the atom has a tiny, heavy nucleus, which is named as nucleus of the atom. While the most important properties of atomic and molecular structure was explained using the simple [picture of an atom called the Bohr Model. This model was proposed by Niels Bohr. He also concluded that an atom is a small, positively charged nucleus surrounded by orbiting electrons.   The different theories and discoveries  by the great scientists mentioned above demonstrate the atomic model and composition of atoms.  



ANSWERED AT 05/12/2019 - 08:10 PM


QUESTION POSTED AT 05/12/2019 - 08:10 PM

What happens when the kinetic energy of molecules increases so much that electrons are released by the atoms, creating a swirling gas of positive ions and negative electrons?

When that happens, you get a plasma — the fourth state of matter.

ANSWERED AT 05/12/2019 - 08:03 PM


QUESTION POSTED AT 05/12/2019 - 08:03 PM

What is the symbol of a sodium ion, Na , followed by the formula of a sulfate ion, SO42−

The formula is Na₂SO₄

The symbol for a sodium ion is Na⁺. The formula for a sulfate ion is SO₄²⁻.

You need two Na⁺ ions to balance the charge on one SO₄²⁻ ion.

The formula must be Na₂SO₄.

ANSWERED AT 05/12/2019 - 05:28 PM


QUESTION POSTED AT 05/12/2019 - 05:28 PM

Scientific experiments must be able to be repeated by multiple scientists to verify the results that are obtained. Which of the following is an example of a scientific question that could be used to create an easily reproducible experiment?

Hi,

You didn't mention what "the following" were - please add additional information so the problem can be solved.


ANSWERED AT 05/12/2019 - 02:46 PM


QUESTION POSTED AT 05/12/2019 - 02:46 PM

Which is one way scientists indicate how precise and accurate their experimental measurements are? A. they keep accurate, honest records. B. they make sure their experiments can be repeated. C. they use significant figures in their measurements. D.they record small samples of data.

Answer : Option B) They make sure their experiments can be repeated.

Explanation : The one way which indicates that how precise and accurate the scientist's experimental measurements are- is by making sure that their experiments are repeatable.

As accuracy is a term which is defined as the a combination of both types of observational error which is random and systematic, so if high accuracy is required then both high precision and high trueness has to be achieved. In short, it the closeness to the 'true value' of the observations.

Whereas Precision refers to the closeness of two or more measurements to each other, but it is independent of accuracy.

So, to produce precise and accurate results in experimental measurements, the experiments should have repeatable data of results and observations.

ANSWERED AT 05/12/2019 - 12:40 PM


QUESTION POSTED AT 05/12/2019 - 12:40 PM

The document that provides the structure for the us government is

The Constitution provides the basic structure for US Government.

As a sidenote, you posted this in Chemistry, when it actually belongs in another topic.  Please be sure to post questions only where they belong.  Thanks!  :)

ANSWERED AT 05/12/2019 - 03:59 AM


QUESTION POSTED AT 05/12/2019 - 03:59 AM

Cell,neclus,genes,chromosomes,tissue,organ,organ system organism arrange in order?

The order in increasing is:

genes, chromosomes, cells, tissue, organ, system, organism

ANSWERED AT 04/12/2019 - 06:36 AM


QUESTION POSTED AT 04/12/2019 - 06:36 AM

Based on the Arrhenius theory, when potassium hydroxide dissolves in water, the only negative ion in the aqueous solution is (1) O2 (aq) (3) H (aq) (2) OH2 (aq) (4) OH (aq)

Answer : The correct option is, (4) OH^-(aq).

Explanation :

According to the Arrhenius theory, an acid is a substance that ionizes in water to gives H^+ ions (hydronium ions or hydrogen ions) and a base is a substance which ionizes in water to gives OH^- ions (hydroxide ions).

As we know that when the potassium hydroxide (KOH) dissolves in water or ionizes in water to gives OH^- ions (hydroxide ions) and K^+ ions (potassium ion). That means OH^- ion is a negative ion in aqueous solution and K^+ ions is a positive ion in aqueous solution.

Hence, the correct option is, (4) OH^-(aq).

ANSWERED AT 04/12/2019 - 03:47 AM


QUESTION POSTED AT 04/12/2019 - 03:47 AM

Eli states that sodium phosphate is a mixture because it is composed of both sodium ions and phosphate ions. Which is the best analysis of Eli’s statement? a. It is correct because each ion is a pure substance, so sodium phosphate is made up of two pure substances. b. It is correct because the composition of sodium phosphate changes depending on the sample. c. It is incorrect because sodium phosphate is a compound that has a single composition. d. It is incorrect because the two types of ions in sodium phosphate cannot be seen.

Answer is: c. It is incorrect because sodium phosphate is a compound that has a single composition.

Sodium phosphate is chemical compound composed of atoms connected with chemical bonds.

Pure substance is made of only one type of atom (element) or only one type of molecule (compound), it has definite and constant composition with distinct chemical properties.

Pure substances can be separated chemically, not physically, that is difference between pure substances and mixtures.

ANSWERED AT 04/12/2019 - 01:44 AM


QUESTION POSTED AT 04/12/2019 - 01:44 AM

When the ideal gas law is arranged as shown below, what property of the gas is being solved for (represented by the X)? x equals PV over nR


That's kind of a ponderous way to describe it, but your 'X' represents
the absolute temperature of the ideal gas.

ANSWERED AT 04/12/2019 - 12:37 AM


QUESTION POSTED AT 04/12/2019 - 12:37 AM

What are the basic structures in which objects are grouped together in space?

The Stars, the Earth, the Solar System, the Milky Way, and the universe are some basic structures in which the objects in the space are grouped together. Stars group together to create constellation. We live on earth, our planet that evolves on its orbit around the sun. The Solar system is composed of planets, sun and other objects. The Milky Way Galaxy consists of billions of stars grouped together. And the Universe that holds billions of galaxies all throughout the space.



ANSWERED AT 04/12/2019 - 12:32 AM


QUESTION POSTED AT 04/12/2019 - 12:32 AM

What types of stimuli can cause the gates on ion channels to open or close?

In the voltage-gated channels, the stimuli is a change in the voltage across the membrane.

In mechanically gated channels the stimuli is a mechanical stress.

In ligand-gated channels the stimuli is the binding of a ligand:ion or molecule that binds to a metal atom.

ANSWERED AT 03/12/2019 - 10:03 PM


QUESTION POSTED AT 03/12/2019 - 10:03 PM

Which element has atoms that can form halide ions? (1) iodine (3) strontium (2) silver (4) xenon

Answer: Option (1) is the correct answer.

Explanation:

Halides or halogens are the species that belong to group 17. Elements of group 17 are fluorine, chlorine, bromine, iodine and astatine.

Where only astatine is radioactive in nature.

And, only the elements of group 17 are able to form halide ions by gaining an electron from the donor atom.

Silver is a transition metal and hence, it is a d-block element. Xenon is a noble gas and belongs to group 18.

Strontium is a group 2A element and it does not form halide ions.

Thus, we can conclude that iodine element has atoms that can form halide ions.

ANSWERED AT 03/12/2019 - 07:47 PM


QUESTION POSTED AT 03/12/2019 - 07:47 PM

When the ideal gas law is arranged as shown below, what property of the gas is being solved for (represented by the X)? x equals nRT over V Moles Pressure Temperature Volume

The ideal gas law:
pV=nRT
p - pressure, V - volume, n - the number of moles, R - the gas constant, T - temperature

x=\frac{nRT}{V} \ \ \ \ \ \ \ \ |\times V \\
xV=nRT \\ \Downarrow \\ x=p

The answer is pressure.

ANSWERED AT 03/12/2019 - 02:07 PM


QUESTION POSTED AT 03/12/2019 - 02:07 PM

The atoms of Group 7A elements _____ electrons when they form ions. A. share B. gain C. lose D. cannot be determined

The answer is B. gain. The elements from group 7a is F, Cl, Br, I... These elements has 7 electrons at the outer shell. And they are likely to gain one electron to stay at stable status.

ANSWERED AT 03/12/2019 - 01:01 PM


QUESTION POSTED AT 03/12/2019 - 01:01 PM

The symbol for the hydroxide ion is _____. H H3O- H(OH) OH-

Answer : The symbol of hydroxide ion is OH^-.

Explanation :

Hydroxide ion is a negatively charged molecule which are made up of one oxygen molecule bonded to one hydrogen molecule.

Hydroxide ion is formed by the loss of proton from the water molecule.

The hydroxide ion is represented as OH^-.


ANSWERED AT 03/12/2019 - 12:57 PM


QUESTION POSTED AT 03/12/2019 - 12:57 PM

Which one of the following compounds contains an ion with a 3+ charge? Na2O CuCl MgCl2 KCl FeCl3

The answer would be FeCI3

ANSWERED AT 03/12/2019 - 12:14 PM


QUESTION POSTED AT 03/12/2019 - 12:14 PM

A charged atom or particle is called a(n) _______. muon ion isotope prion

In general its called an ion 

ANSWERED AT 03/12/2019 - 12:13 PM


QUESTION POSTED AT 03/12/2019 - 12:13 PM

A charged atom or particle is called a(n) _______. a. muon b. ion c. isotope d. prion

B) Ion, an ion is a charged atom or molecule

ANSWERED AT 03/12/2019 - 03:12 AM


QUESTION POSTED AT 03/12/2019 - 03:12 AM

If the valence electrons were removed, what would be the ion charge of the element? Al

There is 3 electrons at the outer layer of the Al atom. So when the valence electrons were removed and Al ion at a stable status, the Al ion is +3 charge.

ANSWERED AT 03/12/2019 - 03:10 AM


QUESTION POSTED AT 03/12/2019 - 03:10 AM

Help, please? In the reaction, 2 Al (s) + 3 Sn+2 (aq) arrow 2 Al+3 (aq) + 3 Sn (s), the reducing agent is: a. the Al b. the Sn+2 c. the Al+3 d. the Sn

The answer is a. the Al. First, the reducing agent must be reactants. And reducing agent will have oxidation reaction and will lose electrons. So the answer should be Al(s).

ANSWERED AT 03/12/2019 - 03:06 AM


QUESTION POSTED AT 03/12/2019 - 03:06 AM