The structures of TeF4 and TeCl4 in the gas phase have been studied by electron diffraction (S. A. Shlykov, N. I. Giricheva, A. V. Titov, M. Szwak, D. Lentz, G. V. Girichev, Dalton Trans., 2010, 39, 3245).
a. Would you expect the Te i X (axial) distances in these molecules to be longer or shorter than than Te i X (equatorial) distances? Explain briefly.
b. Which compound would you predict to have the smaller X(axial) i Te i X(axial) angles? The smaller X(equatorial) i Te i X(equatorial) angles? Explain briefly.

Answer:

It is homogeneous

Explanation:

Answer: CS and F

Explanation:

...ck-12

The pair of elements that would most likely undergo a violent reaction if combined with each other is; Choice D: Cs and F

According to the question;

Conventionally, alkali metals and halogens react violently.

More specifically; Caesium and Flourine react most violently because they are highly reactive members of the Alkali metals and halogens group respectively.

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The electron will be located in is 4p in a hydrogen atom..

Given:

Three quantum numbers for an electron in a hydrogen atom in a certain state:

n = 4, l=1, [tex]m_l=1[/tex]

To find:

The location of an electron.

Solution:

The principal quantum number, n = 4

The angular momentum quantum number = l = 1 = p-orbital

The magnetic quantum number = [tex]m_l[/tex] = -l  to +l = -l , 0, +1

The electron will be located in is 4p in a hydrogen atom.

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Answer:

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Calcium phosphide (CP) is the inorganic compound with the formula Ca3P2. It is one of several phosphides of calcium, being described as the salt-like material composed of Ca2+ and P3−.

Explanation:

Answer:

Inorganic Compound

Answer:

The answer is A, Neutron adds only mass

Answer:

Mass of oxygen = 52.32 g

Explanation:

Given data:

Mass of water = 58.9 g

Mass of oxygen produced = ?

Solution:

Chemical equation:

2H₂O  →   2H₂ + O₂

Number of moles of water:

Number of moles = mass/ molar mass

Number of moles = 58.9 g/ 18 g/mol

Number of moles = 3.27 mol

Now we will compare the moles of water with oxygen from balance chemical equation.

                  H₂O           :            O₂

                     2             :            1

                3.27             :           1/2×3.27 = 1.635 mol

Mass of oxygen produced:

Mass = number of moles × molar mass

Mass = 1.635 mol × 32 g/mol

Mass = 52.32 g

Answer:

see the image below

Explanation:

oxidation is losing of electrons

reduction is gaining of electrons

Answer:

Artificial Intelligence has helped us find fossils faster than ever. Before this technology, finding fossils was based on luck although scientists could make an educated guess. These robots are called paleobots. These robots use various techniques like scanning the location and some robots can also help with excavation.  

Answer:

NASA technology, Remote Sensing, the search can be narrowed. Remote sensing techniques use satellites to help observe and measure objects from a distance. One part of remote sensing involves taking pictures. With images like the ones from NASA's LandSat Satellites, paleontologists use remote sensing to locate areas in the Gobi where fossils are most likely to be found. LandSat sensors measure different wavelengths of reflected sunlight and emitted thermal radiation. The data are beamed back to Earth, where they can be made into images. Paleontologists analyze these images, looking for rock formations most likely to yield fossils.

Explanation:

Answer:

Flame tests are used to identify the presence of a relatively small number of metal ions in a compound. Not all metal ions give flame colors. For Group 1 compounds, flame tests are usually by far the easiest way of identifying which metal you have got. ... Confirm the colors with the elements on Table 1

Explanation:

Answer:

4P+ 3(O2)= 2(P2O3)

Explanation:

Need to add 4 infront of P on left hand side to balance number of atoms on both sides

Answer:

1.11 M

Explanation:

M₁V₁ = M₂V₂

Step 1: Define

Molarity₁ = 2.50 M

Volume₁ = 0.890 L

Molarity₂ = unknown

Volume₂ = 2.00 L

Step 2: Substitute and Evaluate for M₂

(2.50 M)(0.890 L) = (M₂)(2.00 L)

2.225 = M₂(2.00 L)

M₂ = 1.1125 M

Step 3: Simplify

We are given 3 sig figs.

1.1125 M ≈ 1.11 M

Answer:

Explanation:

From the given information:

The density of O₂ gas = [tex]d_{ideal} = \dfrac{P\times M}{RT}[/tex]

here:

P = pressure of the O₂ gas = 310 bar

= [tex]310 \ bar \times \dfrac{0.987 \ atm}{1 \ bar}[/tex]

= 305.97 atm

The temperature T = 415 K

The rate R = 0.0821 L.atm/mol.K

molar mass of O₂  gas = 32 g/mol

∴

[tex]d_{ideal} = \dfrac{305.97 \ \times 32}{0.0821 \times 415}[/tex]

[tex]d_{ideal}[/tex] = 287.37 g/L

To find the density using the Van der Waal equation

Recall that:

the Van der Waal constant for O₂ is:

a = 1.382 bar. L²/mol²    &

b = 0.0319  L/mol

The initial step is to determine the volume = Vm

The Van der Waal equation can be represented as:

[tex]P =\dfrac{RT}{V-b}-\dfrac{a}{V^2}[/tex]

where;

R = gas constant (in bar) = 8.314 × 10⁻² L.bar/ K.mol

Replacing our values into the above equation, we have:

[tex]310 =\dfrac{0.08314\times 415}{V-0.0319}-\dfrac{1.382}{V^2}[/tex]

[tex]310 =\dfrac{34.5031}{V-0.0319}-\dfrac{1.382}{V^2}[/tex]

[tex]310V^3 -44.389V^2+1.382V-0.044=0[/tex]

After solving;

V = 0.1152 L

∴

[tex]d_{Van \ der \ Waal} = \dfrac{32}{0.1152}[/tex]

[tex]d_{Van \ der \ Waal}[/tex] = 277.77  g/L

We say that the repulsive part of the interaction potential dominates because the results showcase that the density of the Van der Waals is lesser than the density of ideal gas.

Answer: Antimony pentoxide

Hope this helps :)

The answer is joule

Answer:

Glucose

Explanation:

Glucose molecule is the primary source of energy for most organisms where processes such as glycolysis starts and cellular respiration follows. Bodies of organisms can get energy from carbohydrates, proteins and fats with carbohydrates being the main component for energy where they are converted to glucose which is a form of sugar that reacts to affect blood sugar levels within an hour or two hours after eating.

The second answer option, table salt (NaCl) is incorrect because sodium added in food is vital for functioning of nerves and muscles. Additionally, it helps in fluid regulation and control of blood pressure/volume in the body.

The third answer , hydrochloric acid is not correct because presence of hydrochloric acid in the body helps in breaking down, digestion and absorption of nutrients.

The correct answer choices are : A and D.

Answer:

150 years i guess so? im nkt sure

Answer:

If a fossil bone is found to contain 1/8th as much Carbon-14 as the bone of a living animal, what is the approximate age of the fossil?(half-life of C-14 = 5800 years)

Explanation:

Answer:

Transport of gases and nutrients

Explanation:

The circulatory system includes all the vessels that transport blood around the body as well as the blood itself. Sometimes the heart and lungs are also included as part of the circulatory system.

The vessels of the circulatory system are involved in the transport of blood throughout the body.  Blood carries the necessary gases to the cells (oxygen) and waste products (CO2) away. It also carries important nutrients to the cells and transports chemical messengers in the form of hormones to their sites of action.

Answer:

The number of protons in an atom is always equal to the atomic number.

Explanation:

Answer:

Oxygen- 6

Calcium-2

Nitrogen-5

Aluminum-3

Flourine-7

Explanation:

A Lewis structure or dot electron structure is a representation of an atom in which the valence electrons on the outermost shell of the atom are represented as dots.

These dots show the number of valence electrons as well as the group to which the atom belongs in the periodic table.

The Lewis structure of an oxygen atom should have 6 dots drawn around the symbol

The Lewis structure of a calcium atom should have 2 dots drawn around the symbol Ca

The Lewis structure of a nitrogen atom should have 5 dots drawn around the symbol N

The Lewis structure of an aluminum atom should have 3 dots drawn around the symbol Al

The Lewis structure of a fluorine atom should have 7 dots drawn around the symbol F

The oxygen atom has 6 electrons in its outermost shell

Hence, the Lewis structure of an oxygen atom should have 6 dots drawn around the symbol

The calcium atom has 2 electrons in its outermost shell

Hence, the Lewis structure of a calcium atom should have 2 dots drawn around the symbol Ca

The nitrogen atom has 5 electrons in its outermost shell

Hence, the Lewis structure of a nitrogen atom should have 5 dots drawn around the symbol N

The nitrogen atom has 3 electrons in its outermost shell

Hence, the Lewis structure of an aluminum atom should have 3 dots drawn around the symbol Al

The fluorine atom has 7 electrons in its outermost shell

Hence, the Lewis structure of a fluorine atom should have 7 dots drawn around the symbol F

Hence,

The Lewis structure of an oxygen atom should have 6 dots drawn around the symbol

The Lewis structure of a calcium atom should have 2 dots drawn around the symbol Ca

The Lewis structure of a nitrogen atom should have 5 dots drawn around the symbol N

The Lewis structure of an aluminum atom should have 3 dots drawn around the symbol Al

The Lewis structure of a fluorine atom should have 7 dots drawn around the symbol F

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Answer:

1,4,6,7

Explanation:

Electrons have a negitive charge and are outside of the nucleus and have the same atomic number and have the same number os nutrons.

Applying physical and scientific concepts to the design, development, and maintenance of both the artificially produced environment as well as the naturally occurring built environment is known as civil engineering. The correct option is B.

In both the public and private sectors, civil engineers conceptualize, design, develop, supervise, run, and maintain infrastructure projects and systems, such as highways, buildings, airports, tunnels, dams, bridges, and water supply and sewage treatment systems.

Traditionally, civil engineering has been divided into a variety of sub-disciplines. It is defined to separate non-military engineering from military engineering and is regarded as the second-oldest engineering subject after military engineering.

A civil engineer make brainstorming ways to prevent landslides on steep slopes. In some locations, a civil engineer is qualified to do land surveying; in other locations, surveying is only permitted for building purposes without a different licence.

Thus the correct option is B.

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#SPJ2

Answer:

Explanation:

One mole of any gas at STP takes up 22.4 L

1 mole of gas = 22.4L

2.5 moles of gas takes up = ( 22.4 L/ 1 mole ) x 2.5 mole

= 56 L

Answer:

Increases within the group as you descend down the periodic table

Explanation:

Hello,

In this case, since the reactivity of alkali metals increases within the group as you descend down the periodic table due to the fact that it is easier for electrons to be given or taken away due to the atomic size, which increases as much as the period increases.

That is why potassium reacts more heavily with water than sodium.

Best regards.

Answer:

3 small cups

Explanation:

The correct answer would be 3 small cups.

The big cup can hold 9/10 of the total seeds.

The small cup can hold 3/10 of the total seeds.

3 of the small cup would be equivalent to the big cup such that:

  3 x 3/10 = 9/10

Hence, 3 small cups = 1 bigger cup.

Answer: Solubility

Explanation:

Answer:

Solubility i believe

Explanation: