2 What do you notice about the location of the elements in each family?​

If a sample has an initial mass of 4.48 grams and undergoes decay until it has a mass of 0.140 grams, then option b 3 half-lifes  passed

The half-life of a substance is the amount of time it takes for half of the initial sample to decay. For cobalt-60, the half-life is 5.26 years. This means that if we start with 4.48 grams of cobalt-60, half of that (2.24 grams) will remain after 5.26 years.

The remaining 2.24 grams will then decay until half of that (1.12 grams) remains after another 5.26 years. Continuing this pattern, we can see that after 3 half-lives (15.78 years), we will be left with 0.140 grams of cobalt-60. Therefore, the sample underwent decay for 3 half-lives.

Half-life, in chemistry, is the time required for half of the original number of radioactive atoms in a sample to decay. The half-life of a radioactive substance is a measure of the stability of the nucleus of the atom.

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According to the electronic configuration of  copper which is [Ar]3d¹⁰ 4s¹ it commonly forms  a cation with+1 charge and  it can exist  in two  charges that is, +1 and +2, however +1 charge of copper is stable .

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.

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The mass of the asteroid is C. 1.2 x \(10^{12}\) Kg

To find the mass of the other asteroid, we can rearrange the equation for the gravitational force between two objects:

F = (G * m1 * m2) / \(r^{2}\)

where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two asteroids, and r is the distance between them.

Given that the distance between the asteroids is 75000 m, the force of gravity between them is 1.14 N, and one asteroid has a mass of 8 x \(10^{7}\) kg, we can substitute these values into the equation and solve for the mass of the other asteroid (m2):

1.14 N = (6.67430 × \(10^{-11}\) N \(m^{2}\)/\(Kg^{2}\) * 8 x \(10^{7}\) kg * \(m2\)) / \((75000 m)^{2}\)

Simplifying and solving the equation, we find that the mass of the other asteroid (m2) is approximately 1.2 x \(10^{12}\) kg. Therefore, Option C is correct.

The question was incomplete. find the full content below:

Two asteroids are 75000 m apart one has a mass of 8 x \(10^{7}\) kg if the force of gravity between them is 1.14 what is the mass of the asteroid

A. 3.4 x \(10^{11}\) kg

B. 8.3 x \(10^{12}\) kg

C. 1.2 x \(10^{12}\) kg

D. 1.2 x \(10^{10}\) kg

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Answer:

It's probably C

The forces between liquid particles are weaker than the forces between solid particles. This means that liquid particles are further apart and can move about more easily. Since the particles can move, the liquid can flow and take the shape of its container

Sorry if the answer is wrong!!!!!!

The mutation in the gene that codes for pigment in the wings of the white butterfly would result in the absence or reduction of the pigment production, leading to the loss of coloration in the wings and resulting in the white phenotype. This mutation could be the result of a variety of factors, such as errors during DNA replication, exposure to mutagens, or environmental stresses.

considering of its impact on the butterfly's survival and reproductive success, the effect of this mutation would depend on the specific environmental conditions and ecological pressures. The white phenotype may provide a survival advantage, such as camouflage in a snowy or light-colored environment, making it a beneficial mutation or the lack of coloration could make the butterfly more visible to predators, making it a harmful mutation. If the mutation has no impact on the butterfly's ability to survive and reproduce, it would be considered a neutral mutation. Ultimately, the impact of the mutation on the butterfly's fitness and population dynamics would depend on the specific ecological context.

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Answer:

0.350 g of iron

Explanation:

Step 1: Given data

Mass of iron (m): 350 mg

Step 2: Convert the mass of iron to milligrams

In order to convert the mass of iron from grams to milligrams we need a conversion factor. In this case, the conversion factor is 1 g = 1,000 mg.

350 mg Fe × 1 g Fe/1,000 mg Fe = 0.350 g Fe

350 milligrams of iron is equal to 0.350 grams of iron. We conserve the 3 significante figures of the original data.

Answer:

Rubber

Rubber

Make me brainlyist

The motion of gas molecules:

The particles in a gas are fast moving and are able to spread apart from one another.

In gases, particles move rapidly in all directions.

Answer: A. Accelerating

The molecule described below is known as :

2-pentene.

In the diagram below:

As a result, the compound is 2 pentene.

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Answer:

Electrochemical cells convert chemical energy into electrical energy or vice versa. Electrolytic cell is a type of electrochemical cell in which electrical energy is converted into chemical energy. ... Electrolytic cells consist of positively charged anode and a negatively charged cathode.

I hope it's help

Answer:

See explanation and image attached

Explanation:

The question has to do with the protonation of an alcohol. We know that oxygen has two lone pairs of electrons. Now a lone pair of electrons can pick up a proton leading to the formation of a coordinate bond between the proton and the oxygen atom.

The oxygen atom in the alcohol now has a positive charge as shown in the image attached to this answer. All the bonds remain single.

Answer:

A. since Nitrogen has 7 electrons and when it gains 3 electrons it will have 10 electrons. using short hand rule it is [Ne]

Explanation:

density= mass × volume

3.35×5

=. 16 .75

Types of luminous flames:

1. Yellow Luminous Flame

2. Smoky Luminous Flame

3. Orange Luminous Flame

4. Blue Luminous Flame

Luminous flames are characterized by their visible glow, which is caused by the incomplete combustion of fuel. The presence of soot particles in the flame causes the emission of light. There are different types of luminous flames, which can be classified based on their fuel composition and burning conditions. Here are some common types of luminous flames:

1. Yellow Luminous Flame: This is the most common type of luminous flame, often seen in open fires, candles, and gas stoves. It appears yellow due to the presence of soot particles in the flame. Yellow flames indicate incomplete combustion of hydrocarbon fuels, such as methane, propane, or natural gas. The high carbon content in these fuels leads to the formation of soot, which emits visible light.

2. Smoky Luminous Flame: This type of flame is characterized by a significant amount of black smoke and soot production. It is commonly observed in poorly adjusted or malfunctioning burners or engines. The excessive presence of unburned fuel in the flame results in incomplete combustion and the emission of dark smoke particles.

3. Orange Luminous Flame: An orange flame indicates a higher combustion temperature compared to a yellow flame. It is often seen in more efficient burners or when burning fuels with a higher carbon content, such as oil or diesel. The higher temperature helps in burning more of the carbon particles, reducing the amount of soot and making the flame appear less yellow.

4. Blue Luminous Flame: A blue flame is typically associated with complete combustion. It indicates efficient burning of fuel, resulting in minimal soot formation. Blue flames are commonly observed in gas burners or Bunsen burners. The blue color is a result of the combustion of gases, such as methane, in the presence of sufficient oxygen.

It's important to note that the luminosity of a flame can vary depending on factors such as fuel-air mixture, combustion temperature, and the presence of impurities. Achieving complete combustion and minimizing the production of soot is desirable for efficient and cleaner burning processes.

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Answer:

D

Explanation:

D because scientists study cells to know how to help people when they are sick

hope this helps (it might be wrong)

Answer: The answer is incus

Answer: b

A change of state is a reversible process.

2Ag⁺(aq) + Mg(s)→ 2Ag(s) + Mg²⁺ (aq)

Given

Standard cell notation:

Mg(s) | Mg2+ (aq) || Ag+(aq)| Ag(s)

Required

a balanced redox reaction

Solution

At the cathode the reduction reaction occurs, the anode oxidation reaction occurs

In reaction:  

Ag⁺ + Mg → Ag + Mg²⁺  

half-reactions

Ag⁺ (aq) + e⁻ ---> Ag (s)  x2

2Ag⁺ (aq) + 2e⁻ ---> 2Ag (s)

Mg (s) → Mg²⁺ (aq) + 2e−

a balanced cell reaction

2Ag⁺(aq) + Mg(s)→ 2Ag(s) + Mg²⁺ (aq)

Answer:2Ag⁺(aq) + Mg(s)→ 2Ag(s) + Mg²⁺ (aq)

Explanation:

just took test

Answer: White or Black

Explanation: White is a blank color used for coloring so if you shine a certain color on it it'll show and along goes with black. :)

Answer: Potassium and fluorine

Explanation:

The two rows form bonds the easiest

Answer: #1

Explanation:

Answer:

log = ( - 0.51 z 2) / ( 1 + ( / 305)

Explanation:

Answer:

Explanation:

Bond angles in BH3 are greater than the bond angles for NH3 because BH3 have three electron clouds that bond to one central atom Boron. Each clods have electrons that bond between Boron and Hydrogen atom. The three electrons cloud attach to Central atom B and adopt a position which make them to form triagonal planar geometry making the angles between them to be bigger.

But as for NH3, it has extra lone pairs making it four electron clouds which form tetrahedral geometry. The extra lone pair occupy space making the angles between the bond to be reduced.

Answer:

Explanation:

1 molecule contains 1 carbon atom.

9.837 * 10^24 molecules contains 9.837 * 10^24  atom of carbon.

It's a 1 to 1 ratio.

Answer:

e) ⁵²Cr

Explanation:

The general form of alpha decay is as follows:

\(\boxed{ ^A_ZX \ \ \rightarrow \ \ ^{A - 4} _{Z - 2} \ Y \ \ + \ \ ^4_2 \alpha}\).

From this, we can see that during alpha decay, the mass number decreases by 4 and the atomic number decreases by 2.

Therefore, we need to find a nucleus that has 4 more nucleons (i.e., a mass number that is 4 more) than that of Ti-48, which is 48 + 4 = 52.

The only option with a nuclear number of 52  is ⁵²Cr, and therefore, Ti-48 is produced by the alpha decay of ⁵²Cr.

The mass, in kilograms, of aluminum sulfate required to produce 35.85 kilograms of lead (IV) sulfate would be 13.48 kilograms.

The equation of the reaction is as follows:

\(3Pb(CH_3COO)_2 + Al_2(SO_4)_3 -- > 3Pb(SO_4) + 2Al(CH_3COO)_3\)

Mole ratio of aluminum sulfate and lead (IV) sulfate = 1:3

Mole of 35.85 kilograms of lead (IV) sulfate = 35.85x1000/303.26 = 118.2154 moles.

Equivalent moles of aluminum sulfate = 118.2154/3 = 39.41 moles

Mass of 39.41 moles of aluminum sulfate = 39.41 x 342.15 = 13484 grams

13484 grams = 13484/1000 = 13.48 kg

In other words, the mass of aluminum sulfate required to produce 35.85 kilograms of leave (IV) sulfate is 13.48 kilograms.

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Answer:

The Sun is a star.

Explanation:

Answer:

sound and sunlight are not considered matter but, the rest is matter

Explanation: