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Answer:

 Not sure

Explanation:

Answer:

if venus were farther away from the sun

Explanation:

it is because far the planet is long the orbit is which make revolution longer

Answer:

1.) Metals are the only substances that use metallic bonds among their atoms. While many elements are commonly known as metals, including iron, aluminum, gold, silver and nickel, metals include a variety of other elements as well. 2.) In metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize. That is to say, instead of orbiting their respective metal atoms, they form a “sea” of electrons that surrounds the positively charged atomic nuclei of the interacting metal ions.

Explanation:

3.) Metallic bonding is utilized for its conductive properties to help transfer electricity throughout a house via copper wiring.

Answer:

the one with the lower ionization energy is more likely to be positive as it is easier to remove the valence electron that causes the positive charge

element a is likely in the s block as that is a low ionization energy and they get larger as you move up and to the R in the table

and element b is likely in the p block for the same reason

Explanation:

Answer:

Option D.

Explanation:

Let's balance the hole reaction by the ion electron method.

Al (s) + Cr(NO₃)₂ (aq) – Cr (s) + Al(NO₃)₃ (aq)

We know that oxidation state at ground state is 0.

We determine the half reactions:

Al  ⇆   Al³⁺  +  3e⁻

Aluminum increase the oxidation state. This is the oxidation.

Cr²⁺ + 2e⁻  ⇄   Cr

Chromium decrease the oxidation state. It changed from +2 to 0.

This is the reduction. In order to balance the half reactions, we need to multiply by 2 and by 3. In that way, we can cancel the electrons:

(Al  ⇆   Al³⁺  +  3e⁻) . 2

(Cr²⁺ + 2e⁻  ⇄   Cr) . 3

We sum the half reactions:

2 Al + 3 Cr²⁺  +  6e⁻  ⇄  2Al³⁺  +  6e⁻ + 3Cr

We cancel the electrons, so now the balanced reaction is:

2Al + 3Cr(NO₃)₂  →  3Cr  + 2Al(NO₃)₃

Final answer: 6 electrons are transferred in the redox reaction.

Answer:

the correct answer is A

Explanation:

Answer:

In the given formula, there is 1 carbon atom and there are 2 oxygen atoms. So, in total there are 3 atoms.

Explanation:

Cold water causes a strong reaction between all alkali metals. Each reaction results in the release of hydrogen gas and the production of metal hydroxide.

The six chemical elements that make up Group 1 ( Ia ) of the periodic table—lithium ( Li ), sodium ( Na ), potassium ( K ), rubidium ( Rb ), cesium ( Cs ), and francium—are together referred to as alkali metals ( Fr ). The name "alkali metals" refers to how they react with water to produce alkalies.

The elements in Group 1 are all extremely reactive. To protect them against air and water, they must be kept under oil when being stored. Group 1 elements produce alkaline metal hydroxides when they interact with water (with a pH above 7). They are known as "alkali metals" for this reason.

Thus, the elements in group 1 react with water to form a hydroxide and hydrogen gas is produced.

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The mass of boy weighing 270 N has been 27.55 kg.

The mass of the object has been determining the quantity of the matter, while weight of the object has been the mass with the gravitational pull.

The weight of the object has been given as:

Weight = mass × gravitational constant

Weight of boy = 270 N

Gravitational constant = 9.8

The mass of boy is:

270 = mass × 9.8

[tex]\rm Mass\;=\;\dfrac{270}{9.8}[/tex]

Mass = 27.55 kg.

The mass of boy weighing 270 N has been 27.55 kg.

For more information about the weight of object, refer to the link:

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Answer:

E. They're the same

good luck, i hope this helps :)

Answer:Answer choices are:

A. These elements did not fit in with his pattern.

B. These elements are gases and he didn't include gases.

C. The atoms of these elements had no atomic mass.

D. These elements had not yet been discovered.

___________________________________________________________

Correct answer choice is:

D. These elements had not yet been discovered.

Answer:

Molar Mass: 138.9818 g/mol

Explanation:

Answer:

motion

Explanation:

Answer:

Indigo wavelength is between  

420

and  

450

nm.

Blue wavelength is between  

450

and  

495

nm.

So blue has a greater  

λ

than indigo.

Explanation:

Answer:

Indigo has greater frequency.

Have a great day!

Answer:

chemical weathering occurs on the surface of minerals, the water and acids that control chemical weathering require access to the surface. Physical weathering breaks the rock to provide that surface

Explanation:

D) chlorine kills most pathogens in water.

Answer:

the  valance electrons

Explanation:

Burrows, tracks, coprolites, nests and footprints are examples of traces that can be found in a fossil.

Answer:

When 2 or more pure substances are mixed together they form a mixture. If the mixture has its different components mixed evenly within the substance it is a homogeneous mixture. Whereas if the mixture has its different components mixed unevenly within the substance it is a heterogeneous mixture

Answer:

1s2 2s2 2p6 3s2 3p6 4s2 3d6

Explanation:

Answer:

[tex]\boxed {\boxed {\sf A. \ 19,320 \ kg/m^3}}[/tex]

Explanation:

We want to find the density. The formula is mass over volume.

[tex]\rho = \frac{m}{v}[/tex]

The mass is 500 kilograms. The volume is 0.026 cubic meters.

[tex]m= 500 \ kg \\v=0.026 \ m^3[/tex]

Substitute the values into the formula.

[tex]\rho= \frac{ 500 \ kg}{ 0.026 \ m^3}[/tex]

Divide.

[tex]\rho = 19230.7692 \ kg/m^3[/tex]

This is just about equal to 19,320 kg/m³, so choice A is correct.

Answer:

A) 19230 kg/ m3

Explanation:

divided it's mass by its volume ti get it's density

500/0.026 = 19230

Answer:

Chalcopyrite

Explanation:

Pure magnetite contains 72.4 percent iron, hematite 69.9 percent, limonite 59.8 percent, and siderite 48.2 percent,

Answer:

smoother and less jagged

Explanation:

Answer:

Gravity

Explanation:

i dont rlly know where it comes from...

Answer:

I think the answer is A sorry if I am wrong :c

A Brønsted-Lowry base is a species that accepts H⁺ ions (A).

It is an acid-base theory.

What is true of a Brønsted-Lowry base?

A. A Brønsted-Lowry base accepts H⁺ ions. True.

B. A Brønsted-Lowry base donates electrons. False. This is a Lewis base.

C. A Brønsted-Lowry base donates OH⁻ ions. False. This is an Arrhenius base.

D. A Brønsted-Lowry base accepts OH⁻ ions. False. This is not part of any acid-base theory.

A Brønsted-Lowry base is a species that accepts H⁺ ions (A).

Learn more about Brønsted-Lowry acid and bases here: https://brainly.com/question/7256753