which element has very high reactivity , very good electrical conductivity , and good malleability

Answer:

it is the objects mass, I learned this last semester

The object's mass has a greater impact on the kinetic energy of an object as it is the mass the mass on which force is exerted and in which energy is stored to be transformed in to kinetic energy.

Force is defined as a cause which is capable of changing the motion of an object. It can cause an object which has mass to change it's velocity. It is also simply a push or a pull . It has both magnitude as well as direction.Hence, it is a vector quantity.

It has SI units of Newton and is represented by'F'.Newton's second law states that force which acts on an object is equal to momentum which changes with time. If mass of object is constant, acceleration is directly proportional to net force acting on an object.

The concepts which related to force are thrust and torque .Thrust increases the velocity of an object and torque produces change in rotational speed of an object.

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There is no answer, science is about empirical knowledge, technology is the sum of techniques, skills, methods, and processes. I do not believe that you will find a answer for that.

Answer:

Thermal heating and cooling

Explanation:

This process described results from thermal heating and cooling as a mechanism of mechanical weathering of rock bodies.

The mole ratio Aluminium to Aluminum Oxide is 2 : 1

Given

Reaction

2Al + Fe ----> Al2O3 +2Fe

Required

The mol ratio

Solution

If we look at the reaction above, there is an element missing from the reactant i.e oxygen, because the number of atoms and elements involved in the reaction should be the same between the reactants and products.

So the possible and balanced reactions are:

2Al(s) + Fe₂O₃ (s)  →  Al₂O₃ (s)+ 2Fe (s)

From this reaction the ratio of Al: Al₂O₃ can be determined, which is 2: 1

Answer: Motion, providing a burst of power that can move a specific part of the device.

Explanation: Hope this helps

Answer:

D > C > B> A

Explanation:

i solved this on study island

Answer:anser choices

Explanation:

Answer:oxygen hahah

Explanation:

Answer:

Blue is the metal Metals react by losing electrons from the outermost shell, which means their outermost electrons and now closer to the nucleus (one shell lower) and thus they get smaller when you go from metal atom to metal ion.

Explanation:

Answer: It most likely represents a canyon.

Answer: d. Ion-dipole

Explanation:

Answer:

Transform boundary

Explanation:

The boundary that is a site of recurring earthquake and faulting activities is the transform boundary.

At a transform boundary, there is a significantly high prevalence of earthquakes and faulting.

Answer:

D

Explanation:

Since the negative particles are going towards the negative section and the positive particles are leaving the positive section. Additionally, opposite charges attract each other and like charges repel each other.

There will be attraction between the opposite charges and repulsion among the like charges. Here the diagram D shows a correct interaction between the fields of two charged particles.

The electric force acting per unit charge is defined as the electric field. They are generally produced by changing the electric charges or magnetic fields. The electric field strength is expressed in volt per meter (V/m).

E = F/Q

In an electric field it is the electric charge which provides the direction of field. If the charge is negative, then the field is directed towards the charge. A field is directed away from the charge if the charge is negative.

All the electric fields start form a positive charge and end on a negative charge. If two positive charges interact then there will be repulsion between them. But if a positive charge interact with a negative charge then there will be attraction among them.

In diagram D there is an attraction between the opposite charges.

Thus the correct option is D.

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Answer:

5m

Explanation:

Given parameters:

Speed of wave  = 3 x 10⁸m/s

Frequency  = 60mhz  = 60 x 10⁶Hz

Unknown:

wavelength = ?

Solution:

To solve this problem;

 we use the expression:

                      V = F ∧  

V is the velocity

F is the frequency

∧ is the wavelength

  Now insert the parameters and solve;

              3 x 10⁸   = 60 x 10⁶ x ∧  

 So;

        ∧   = 5m

Answer:

that's ur answer cumulus clouds I hope it helps

Answer:

Calculate from Oxidation Number

The oxidation number of oxygen is -2, and the oxidation number of hydrogen is +1. Add together the oxidation numbers of all the atoms in the polyatomic ion. In the example, -2 +1 = -1. This is the charge on the polyatomic ion.

Answer:

calcium chloride and silver nitrate

Explanation:

A precipitate is often formed in a double replacement reaction when the reaction yields an insoluble product.

Consider the reaction between calcium chloride and silver nitrate;

CaCl2(aq) + 2AgNO3(aq) -------->2AgCl(s) + Ca(NO3)2(aq)

AgCl is insoluble in water, hence the reaction leads to the formation of a precipitate.

Answer:

Well ice cubes are normally liquids but it is frozen water making it a solid. Since they are made of water particles, they wouldn't normally be a solid, but the particles are packed close enough together to make it one. Hope this helps! :D

Explanation:

Answer:

2.74 x 1023 molecules of CO2.

Explanation:

There are 2.74 x 1023 molecules of CO2.

Answer:

differences

Any compound with a pH value between zero to seven is considered acidic, whereas a pH value between seven to fourteen is a base. An acid is called a proton donor, while a base is called a proton acceptor (Kolb, 1978).

examples are:

baking soda is basic (pH = 9.0).

Orange juice is mildly acidic (pH = approximately 3.5)

The environment in your stomach is highly acidic (pH = 1 to 2).

Explanation:

hope that helps.... thanks

Answer:

Explanation:

That in the liquid, the sugar is completely dissolved. Lemon juice, water, and sugar are combined together and form a solution. A solution is a mixture in which the various types of matter are evenly spread out. Water is considered the solvent of lemonade.

Answer:

a very high melting point answer

Answer:

2gcm⁻³

Explanation:

Given parameters:

Mass of the object  = 20g

Volume = 10mL

Unknown:

Density of the object  = ?

Solution:

Density of a body is its mass per unit volume;

   Density  = [tex]\frac{mass}{volume}[/tex]  

We need to convert mL to cm³ for the volume

     1mL  = 1cm³;

        10mL is therefore, 10cm³  

So;

       Density  = [tex]\frac{20}{10}[/tex]   = 2gcm⁻³

Answer:

18

Explanation:

The n - level given is 3

To find the number electrons that can occupy this level, we use:

                2n²  

n - is the energy level.

The energy level here is 3;

            2 x 3²   = 18

Answer:

Every magnet has two sides: a north pole and a south pole. We use these names because if you hang a magnet from a thread, the magnet’s north pole points (almost) towards the north direction.

This is because the Earth’s core (its centre) is a large, weak magnet. Your little, strong magnet lines up with Earth’s magnetic core, so it points north. That’s how a magnetic compass works.

Answer:

exosphere thermosphere mesosphere stratosphere troposphere

Answer:

Halogens

Explanation:

From the given choices, the halogens will have the smallest radius within the same period.

The size of an atom is estimated by the atomic radius. This is taken as half of the inter-nuclear distance between two covalently bonded atoms of non-metallic elements or half of the distance between two nuclei in the solid state.

Since halogen is the right most group from the choices given, it will have the smallest radius.