Write the name for the IONIC compound that contains two aluminum atoms and three sulfur atoms. (Need help ASAP)

Over time, the atomic size shrinks because as number of shells stays constant but more electrons are added, increasing the nuclear charge.

The distance between an atom's central nucleus and also its outermost shell is known just like its atomic size. The smallest distance here between atom's nucleus and its outermost shell is known as the atomic radius within basic chemistry.

The orbitals from higher primary energy levels have greater sizes than the orbitals form lower principal energy levels. Atomic radius grows down a group as a result of the stronger impact of the major energy levels outweighing a increase overall nuclear charge.

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Answer: The answer is D. Elements that share the same column

Explanation:

The elements occupying the same groups are sharing the same column. They have similar chemical and physical properties. Elements of the same group have the same number of valence electrons.

All elements are classified to different groups and periods. The horizontal rows in the table is called periods and the vertical column are called groups in periodic table.

There are 18 groups and 7 periods in periodic table. The atomic number increases from left to right along a period. Elements in a group are having same number of valence electrons and are having similar chemical and physical properties.

Elements in a groups shows similarity in reactivity and physical properties.  They show same trend in increasing or decreasing nature of physical quantities. A group is thus, representing a column in periodic table.  Therefore, option D is correct.

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Answer:

a

Explanation:

it's the most common thought of element when you need a compound from earth

Answer:

4,186 joules

Explanation:specific heat, the quantity of heat required to raise the temperature of one gram of a substance by one Celsius degree. The units of specific heat are usually calories or joules per gram per Celsius degree. For example, the specific heat of water is 1 calorie (or 4,186 joules) per gram per Celsius degree.

Answer:

One molecule of water has two hydrogen atoms covalently bonded to a single oxygen atom. Water is a tasteless, odorless liquid at ambient temperature and pressure.

Explanation:

Hope this helps :) Have a great day!

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If temperature remains constant, then we can apply the formula :

\(\qquad \tt \dashrightarrow \:p_1v_1 = p_2v_2\)

\(\qquad \tt \dashrightarrow \:4 \times v_1 = 6 \times 18\)

\(\qquad \tt \dashrightarrow \: v_1 = 108 \div 4\)

\(\qquad \tt \dashrightarrow \:v_1 = 27\)

So, the required volume is 27 litres

The atomic model which has been used to describe the pressure resulting from the force from the collision of the gas molecules with the walls of their container.

In the container, the molecules of a gas having their own kinetic energy. The molecules move from one place to another as well as in the process, they will collide with the walls of the container. The collision will results in the formation of a momentum by the particle against the wall of the container. The perpendicular force exerted by the gas molecules will be divided by the area, which will describe the pressure.

Thus, the atomic model has been also used to describe the pressure resulting from the force from the collision of gas molecules with the walls of their container.

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The substance that is needed by plants to survive and is released into the environment by animals is carbon dioxide.

carbon dioxide, (CO2), a colorless fuel having a faint sharp odor and a sour flavor. it is one of the maximum essential greenhouse gases linked to global warming, however, it's far a minor issue of Earth’s atmosphere (approximately 3 volumes in 10,000), formed in the combustion of carbon-containing materials, in fermentation, and in the respiration of animals and employed by plants in the photosynthesis of carbohydrates.

The presence of the gas within the ecosystem keeps a number of the radiant energy obtained via Earth from being returned to space, for that reason generating the so-known greenhouse effect.

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The quantum numbers are used to describe the position of an electron in atom.

The quantum numbers are used to describe the position of an electron in atom. I have attached a picture that shows the complete question.

For the 1s orbital;

n =1

l = 0

ml = 0

ms = ±1/2

For the 2s orbital;

n = 2

l = 1

ml = -1, 0, 1

ms = ±1/2

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Using Appendix D, the molar solubility of AgBr is approximately 5.0 × 10^(-3) M in (a) pure water, (b) 3.0 × 10^(-2) M AgNO3 solution, and (c) 0.10 M NaBr solution.

(a) Pure Water:

The solubility product constant (Ksp) for AgBr is given in Appendix D as 5.0 × 10^(-13). In pure water, no common ion is present. Since AgBr is a sparingly soluble salt, it dissociates as follows:

AgBr(s) ⇌ Ag+(aq) + Br-(aq)

Let's assume the molar solubility of AgBr is x.

Ksp = [Ag+][Br-] = x * x = x^2

Using the value of Ksp, we can set up the equation:

5.0 × 10^(-13) = x^2

Taking the square root of both sides:

x ≈ √(5.0 × 10^(-13)) ≈ 5.0 × 10^(-7) M

Therefore, the molar solubility of AgBr in pure water is approximately 5.0 × 10^(-7) M.

(b) 3.0 × 10^(-2) M AgNO3 solution:

In this case, AgNO3 is added, which provides Ag+ ions as a common ion. The presence of a common ion reduces the solubility of AgBr.

Assuming the molar solubility of AgBr in the presence of Ag+ is y, we can set up the equation:

Ksp = [Ag+][Br-] = (3.0 × 10^(-2) + y) * y

Since y is expected to be much smaller than 3.0 × 10^(-2), we can approximate (3.0 × 10^(-2) + y) as 3.0 × 10^(-2).

Plugging in the values of Ksp and (3.0 × 10^(-2) + y), we get:

5.0 × 10^(-13) = (3.0 × 10^(-2)) * y

Solving for y:

y ≈ (5.0 × 10^(-13)) / (3.0 × 10^(-2)) ≈ 1.7 × 10^(-12) M

Therefore, the molar solubility of AgBr in a 3.0 × 10^(-2) M AgNO3 solution is approximately 1.7 × 10^(-12) M.

(c) 0.10 M NaBr solution:

In this case, NaBr is added, which provides Br- ions as a common ion. The presence of a common ion reduces the solubility of AgBr.

Assuming the molar solubility of AgBr in the presence of Br- is z, we can set up the equation:

Ksp = [Ag+][Br-] = z * (0.10 + z)

Since z is expected to be much smaller than 0.10, we can approximate (0.10 + z) as 0.10.

Plugging in the values of Ksp and 0.10, we get:

5.0 × 10^(-13) = z * 0.10

Solving for z:

z ≈ (5.0 × 10^(-13)) / 0.10 ≈ 5.0 × 10^(-12) M

Therefore, the molar solubility of AgBr in a 0.10 M NaBr solution is approximately 5.0 × 10^(-12) M.

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Answer:

Explanation:

In the cycle, after a new moon, waxing means light appears on the right side of the moon and continues to increase.

Answer:

there is nothing there?

Explanation:

Answer:

7

Explanation:

An atom of a group 17 element such as chlorine has seven valence electrons. It is “eager” to gain an extra electron to fill its outer energy level and gain stability.

The substance in the image above would be classified as a mixture of elements (option E).

A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.

According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.

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The alternative method to collect the gas and measure the volume is by a gas syringe.

What is a gas syringe?

Gas syringe is an equipment used to pump or withdraw gas from a closed container and can measure the volume of the gas produced in any chemical reaction.

The volume of the gas produced can be measured by reading the measuring scale on the gas syringe when the plunger moves in a gas syringe.

Hence, gas syringe is an alternative method to collect and measure the volume of the gas in a chemical reaction.

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Answer:

concentrated B ...............

The concentration of Sr2+ in the final solution is 7.9 x 10^-7 M.

To calculate the concentration of Sr2+ in the final solution, we need to use the equation:

Ksp = [Sr2+][F-]2

We can assume that all the F- ions come from the NaF solution, so we can calculate the initial concentration of F-:

0.080 M x 0.090 L = 0.0072 moles F-

Since we are adding volumes of solutions together, we can calculate the total volume of the final solution:

90 mL + 30 mL = 120 mL = 0.120 L

Next, we can calculate the moles of Sr2+ in the 30 mL of 0.20 M Sr(NO3)2 solution:

0.20 M x 0.030 L = 0.006 moles Sr2+

Now, we can use the Ksp equation to find the concentration of Sr2+ in the final solution:

Ksp = [Sr2+][F-]2

(Since we know the concentration of F-, we only need to solve for [Sr2+])

Ksp = [Sr2+](0.0072 M)2

4.0 x 10^-10 = [Sr2+](0.0072 M)2

[Sr2+] = 7.9 x 10^-7 M

Therefore, the concentration of Sr2+ in the final solution is 7.9 x 10^-7 M.

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A drop of ink will spread faster as higher the temperature is. The higher the temperature, the more agitated the molecules will be, so they will move faster. So the mobility of the particles is related to their temperature.

So:

Particles in Flask C show the greatest mobility of the particles, this flask will have the highest temperature.

Particles in Flask A show the least mobility, this flask will have the lowest temperature.

Answer:

Flask A 10°C

Flask B 25 °C

Flask C 50 °C

The mobility of the particles is related to their temperature. The particles in Flask A show the least mobility, and the particles in Flask C show the greatest mobility.

Answer: C

Explanation:

Increasing the temperature increases the rate of dissolving.

Answer:

aluminum is highly reactive

Answer:

Aluminum is highly reactive

Explanation:

Chemical property is defined as the property in which chemical composition of the substance changes.

For example, reactivity, oxidation state, inflammability etc are all chemical properties.

Therefore, we can conclude that out of the given options, Aluminum is highly reactive depict a chemical property of aluminum.

Answer:

Cl-35 isotope is more abundant.

Explanation:

How to calculate the abundance of isotopes in a mixture from the mass of isotopes and the average atomic mass of the element?

Solution :

Say the % abundance of Cl - 35 is x, i.e, 100 units of Cl contains x units of Cl-35.

Therefore, the % abundance of Cl - 37 is (100 - x).

∴ [35 x + 37 (100-x)] = 35.45 x 100

Simplifying the above equation, we get

-2x + 3700 = 3545

Subtracting 3700 from both sides of the equation, we get

-2x = -155

or, 2x = 155

Dividing both sides of the equation by 2, we get

x = 155 ÷ 2 = 77.5

∴ 100 -x = 22.5

Thus, Cl-35 is more abundant (77.5%) than Cl-37 (22.5%).

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Using a logarithmic scale with 7 as neutral, lower values are more acidic and higher values are more alkaline, the acidity or alkalinity of a solution is expressed. where c is the number of moles of hydrogen ions present per litre. So pH 2 is 1000 times stronger than pH 5, and vice versa.

For instance, a pH of 2 is 10,000 times more acidic than a pH of 3 and a pH of 5 is 10,000 times more acidic. Ten times as alkaline as a pH of 10 is a pH of 11.

Each whole pH value is ten times more acidic than the next higher value since the pH scale is logarithmic.

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The pressure in a 11.5-l cylinder filled with 0.440 mol of nitrogen gas at a temperature of 317 K can be calculated using the ideal gas law equation: Where P is the pressure in atmospheres (atm), V is the volume in liters (l), n is the number of moles of gas, R is the ideal gas constant (0.0821 L atm/K mol), and T is the temperature in Kelvin (K).

First, let's convert the volume from liters to cubic meters (m^3) since the ideal gas constant has SI units. 1 L = 0.001 m^3. So, 11.5 L = 0.0115 m^3. Now, we can plug in the values we have: P(0.0115 m^3) = (0.440 mol)(0.0821 L atm/K mol)(317 K) Therefore, the pressure in the 11.5-l cylinder filled with 0.440 mol of nitrogen gas at a temperature of 317 K is 10.4 atm. The ideal gas law is a fundamental equation used to describe the behavior of gases under different conditions of temperature, pressure, and volume. It states that the pressure, volume, and temperature of an ideal gas are related through the equation PV = nRT, where P is the pressure, V is the volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature.

In this question, we are given the volume of a cylinder filled with nitrogen gas, the number of moles of nitrogen gas, and the temperature. We are asked to find the pressure of the gas in the cylinder. To solve this problem, we can use the ideal gas law equation. First, we need to convert the volume from liters to cubic meters because the ideal gas constant has SI units. 1 L = 0.001 m^3, so 11.5 L = 0.0115 m^3. Therefore, the pressure in the 11.5-l cylinder filled with 0.440 mol of nitrogen gas at a temperature of 317 K is 10.4 atm. In conclusion, the ideal gas law is a useful equation that helps us to describe the behavior of gases under different conditions. By knowing the values of pressure, volume, temperature, and number of moles, we can use the ideal gas law equation to calculate the value of any one of these variables. In this case, we used the ideal gas law equation to calculate the pressure of nitrogen gas in a cylinder.

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Answer:

See explanation

Explanation:

The most accurate method of determining the volume of an object, is the water displacement method. It has the peculiar advantage of working well with irregular solids.

There are often errors that prevent exact measurements of the volume of objects. This makes the water displacement method a preferred and easier method of determining the volume of an object.

The central structural component of an amino acid is a carbon atom located in approximately in the middle of this molecule (Option 4).

An amino acid is a molecule that forms the subunits of proteins. These molecules are composed of a central carbon that links to the amino group, carboxyl group, and also to a side chain, commonly known as the R group (it depends on the properties of specific amino acids).

Therefore, we can conclude that amino acids have a central alpha-carbon atom that links to different groups in the molecule.

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The final temperature of the glass-water combination is approximately 267.07°C. When two objects with different temperatures come into contact, heat transfer occurs until they reach thermal equilibrium, where they have the same temperature.

In this case, the glass and water will exchange heat until they reach a common final temperature. To determine this temperature, we can use the principle of heat transfer, which states that the heat gained by one object is equal to the heat lost by the other object.

The heat gained by the glass can be calculated using the equation:

\(\(Q_{\text{{glass}}} = m_{\text{{glass}}} \cdot c_{\text{{glass}}} \cdot (T_{\text{{final}}} - T_{\text{{glass}}})\)\)

where \(\(m_{\text{{glass}}}\)\) is the mass of the glass, \(\(c_{\text{{glass}}}\)\) is the specific heat capacity of glass, \(\(T_{\text{{final}}}\)\) is the final temperature, and \(\(T_{\text{{glass}}}\)\) is the initial temperature of the glass.

Similarly, the heat lost by the water can be calculated using the equation:

\(\(Q_{\text{{water}}} = m_{\text{{water}}} \cdot c_{\text{{water}}} \cdot (T_{\text{{final}}} - T_{\text{{water}}})\)\)

where \(\(m_{\text{{water}}}\)\) is the mass of the water, \(\(c_{\text{{water}}}\)\) is the specific heat capacity of water, and \(\(T_{\text{{water}}}\)\) is the initial temperature of the water.

Since the container is insulated, we can assume that no heat is lost to the surroundings, so the heat gained by the glass is equal to the heat lost by the water:

\(\(Q_{\text{{glass}}} = Q_{\text{{water}}}\)\)

Substituting the values and rearranging the equation, we can solve for the final temperature, \(\(T_{\text{{final}}}\)\), of the glass-water combination.

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Answer:

9

Explanation:

Given parameters:

    what is  b² - 4ac  of

 Equation x² - 5x + 4 = 0

Solution:

    x² - 5x + 4 in the form ax + bx + c = 0

  a is the coefficient of x²  = 1

                                      b = -5

                                      c = 4

Input the parameters and solve;

   b² - 4ac = -5² - 4(1)(4)

                 = 25 - 16

                  = 9

Answer:

4.2×10^24 atoms

Explanation:

number of atoms = Avogadro's number x number of moles

= 6.02 × 10^23 × 7

=4.2×10^24 atoms