What is the volume of 70.0 g of ether if the density of isether 0.70 g/mL

Answer:

The metalloid that has three valence electrons is Boron~

Explanation:

Answer:

• The conditions under which a real gas is most likely to behave ideally is at low pressure and hight temperatures.

Explanation:

According to molecular kinetic theory, 1) gas particles (molecules or atoms) occupy a negligible fraction of the total volume of the gas, and 2) the force of attraction between gas molecules is zero.

Those two assumptions constitute the basis for the behavior of a gas and an ideal gas.

The lower the pressure and the higher the temperature the closer those assumptions are valid for real gases.

At low pressure, the particles of the gas will be more separated from each other and so the tiny volume they occupy will be a smaller fraction of the total volume.

At higher temperatures, the particles will have more kinetic energy, which means that they will have larger average speed, and so the forces between the molecules will count less.

So, you conclude that under low pressure and high temperatures a real gas is most likely to behave ideally.

Answer :

The parent and daughter concentrations (in percentages) is, 60 % and 40 % respectively.

The age of rock is

Explanation :

First we have to calculate the parent and daughter concentrations (in percentages).

and,

As we know that, the half-life of uranium-238 = years

Now we have to calculate the rate constant, we use the formula :

Now we have to calculate the time passed.

Expression for rate law for first order kinetics is given by:

where,

k = rate constant  =

t = time passed by the sample  = ?

a = initial amount of the reactant  = 3 g

a - x = amount left after decay process = 1.8 g

Now put all the given values in above equation, we get

Therefore, the age of rock is

Answer:

Cobalt is indeed a metal, and its atoms exhibit certain characteristics and interactions with other cobalt atoms. Here are some key features:

Atomic Structure: The cobalt atom has an atomic number of 27, meaning it has 27 protons in its nucleus. It also typically contains 27 electrons, arranged in energy levels or shells around the nucleus. The electron configuration of cobalt is [Ar] 3d^7 4s^2.

Magnetic Properties: Cobalt is known for its magnetic properties. At room temperature, it is ferromagnetic, meaning it can be permanently magnetized. This is due to the arrangement of electrons in its outermost energy levels.

Metallic Bonding: In solid cobalt, metallic bonding occurs. Metallic bonding involves the sharing of electrons between atoms within a metal lattice. In cobalt, the outermost electrons are relatively free to move throughout the metal structure, forming a "sea" of delocalized electrons. This contributes to the metal's electrical and thermal conductivity.

Alloy Formation: Cobalt readily forms alloys with other metals. Common examples include cobalt-chromium (Co-Cr) and cobalt-nickel (Co-Ni) alloys. These alloys often exhibit enhanced strength, hardness, and resistance to corrosion.

Coordination Chemistry: Cobalt is known to form coordination complexes due to its ability to act as a Lewis acid. It can form bonds with ligands, which are typically molecules or ions with lone pairs of electrons. These complexes play a crucial role in various chemical reactions, including catalysis.

Oxidation States: Cobalt can exist in different oxidation states, including +2, +3, and +4. The +2 oxidation state is the most common for cobalt and is stable in many compounds. Cobalt compounds with different oxidation states exhibit diverse chemical and physical properties.

Overall, cobalt atoms in metallic cobalt interact through metallic bonding, while cobalt in compounds can participate in coordination chemistry and exhibit different oxidation states, leading to a wide range of applications and reactivity.

Explanation: