what would be the symbol of an atom of tin that has 50 protons and 70 neutrons

Answer:

This process, which is the opposite of vaporization, is called condensation. As a gas condenses to a liquid, it releases the thermal energy it absorbed to become a gas. During this process, the temperature of the substance does not change. The decrease in energy changes the arrangement of particles.

Reagents that are entirely consumed by a chemical reaction are known as limiting reagents.

Thus, They are additionally known as limiting reactants or limiting agents. A predetermined quantity of reactants are necessary for the reaction to be completed, according to the stoichiometry of chemical reactions.

In the aforementioned reaction, 2 moles of ammonia are created when 3 moles of hydrogen gas react with 1 mole of nitrogen gas.

In most cases, this reactant dictates when the reaction will end. The reaction stoichiometry can be used to determine the precise quantity of reactant that will be required to react with another element. The limiting agent is determined by the mole ratio rather than the mass of the reactants.

Thus, Reagents that are entirely consumed by a chemical reaction are known as limiting reagents.

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Answer:

NaCl in water; ion-dipole interaction

Explanation:

Sodium chloride is an ionic solid. Ionic solids dissolve in water due to ion dipole interaction. Ionic solids are composed of an ion pair which are strongly bound by electrostatic interaction between the oppositely charged ions in the solid state.

When an ionic substance is dissolved in water, the positive ion interacts with the negative end of the dipole in water while the negative ion interacts with the positive end of the dipole in water. Hence the ions are pulled apart by this ion-dipole interaction and the crystal structure of the solid collapses as the ionic solid dissolves in water.

Sodium chloride is an ionic solid. Interaction between the sodium ion and the negative end of the dipole in water as well as chloride ion and the positive end of the dipole in water leads to the dissolution of sodium chloride solid in water. This is the strongest solute-solvent interaction in the list.

When The strongest solute-solvent interactions and the interaction the correct option is A NaCl in water; ion-dipole interaction

Sodium chloride is an ionic solid. Ionic solids liquefy in water due to ion-dipole interaction. Ionic solids are formed of an ion team that is strongly bound by electrostatic interaction between the differently delegated ions in the solid-state.

When an ionic substance is disbanded in water, the positive ion interacts with the negative end of the dipole in the water while the opposing ion interacts with the positive end of the dipole in water. Therefore the ions are dragged apart by this ion-dipole interaction and also when the crystal configuration of the solid collapses as the ionic solid dissolves in water.

Sodium chloride is an ionic solid. The interchange between the sodium ion and the negative future of the dipole in water as well as the chloride ion and the positive end of the dipole in water leads to the abolishment of sodium chloride solid in water. This is the strongest solute-solvent exchange on the list.

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The theoretical yield of I2 in the reaction would be 0.23 g

This refers to the stoichiometric yield of a reaction.

From the equation of the reaction:

Ca(IO3)2 + 10 KI + 12 HCl → 6 I2 + CaCl2 + 10 KCl + 6 H2O

The mole ratio of Ca(IO3)2 and I2 is 1: 6

Mole of 15.00 mL, 0.0100 M Ca(IO3)2 = 15/1000 x 0.0100

                                                              = 0.00015 mole

Equivalent mole of I2 = 0.00015 x 6

                                      = 0.009 mole

mass of 0.0009 I2 = 0.0009 x 253.809

                                = 0.23 g

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Answer:

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Explanation:

Potassium chlorate which is an oxidant is mixed with sulfur, starch and glue to make the tip of matchstick. When we need to light up the fire, we rub the matchstick with the surface of matchbox which offers resistance. The friction between the tip and the surface is the main reason of fire.

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The property X is an extrinsic property.

The term extensive property refers to the type of property that depends on the amount of the substance present. We must recall that an intensive property does not in any way depend on the number or the amount of the substance present in the sample.

If we have a good look at the table that is being referred to here, we would see that the mass of the substance tends to increase as a certain un named property of the substance X is increasing. This implies that the property X is affected by the mass of the object which is the quantity of matter in the object. This gives us an idea that the property that we are referring to can not be an intrinsic  property since it varies with the mass of the substance that is under study as shown.

We can then conclude that the property X is an extrinsic property.

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Missing parts;

Carrie measured mass and another property, X, of three pure samples of the same compound. She recorded her data in the table. Which of the following best describes property X?

A. X  is an intensive property because it does not vary with the size of the sample.

B. X is an extensive property because it does not vary with the size of the sample.

C. X is an extensive property because it varies directly with the size of the sample.

D. X is an intensive property because it varies directly with the size of the sample.

Answer:

Explanation:

Let the protein contained in pizza be m gram .

calories contained by 17 g of fat = 17 x 9  kcals = 153  kcals .

calories contained by 25 g of carbohydrate = 25 x 4  kcals = 100 kcals .

calories contained by m  g of protein  = m  x 4  kcals = 4 m  kcals .

Total calories of slice of pizza = 153 + 100 + 4m kcals

= 253 + 4m kcals

Given ,

253 + 4m = 750

4m = 497

m = 124.25 g .

120 g ( rounded to two significant  figures )

Answer:

2Sb + 3I2 → 2SbI3

Explanation:

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Answer:Electrical Conductivity,soluble

Explanation:

Salt is a non-magnetic solid and is soluble in water. Sand is a non-magnetic solid and is insoluble in water.

Electrical Conductivity: Salt is an electrolyte and conducts electricity when dissolved in water or in a molten state. This is because salt dissociates into ions (Na+ and Cl-) that can carry electric current. In contrast, sand is a covalent compound and does not conduct electricity, as it does not dissociate into ions in the same way as salt. Sand is considered an insulator in terms of electrical conductivity.

The relationship between a reaction's products and reactants with regard to a certain unit is expressed by the equilibrium constant, K.

Thus, When a reaction is homogeneous, all of the products' and reactions' states of matter are the same (the prefix "homo" means "same"). The solvent typically controls the reaction's overall state of matter.

When a reaction is in chemical equilibrium, the concentrations of the reactants and products do not significantly fluctuate over time. A double arrow between the reactants and products denotes these reversible reactions.

As described, this reaction is endothermic, therefore when heat is added, the equilibrium constant moves to the right.  In turn, this turns the solution blue.  Cl- is drawn out of solution by the addition of AgNO3.

Thus, The relationship between a reaction's products and reactants with regard to a certain unit is expressed by the equilibrium constant, K.

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Answer:

To obtain the grams of fat that the ground round has, knowing that it weighs 1.33 pounds we must pass this value to grams. Since 1 pound equals 453.59 grams, 1.33 pounds equals 603.27 (453.59 x 1.33).

Now, to obtain 29 percent of 603.27, we must make the following calculation: 603.27 / 100 x 29, which gives a total of 174.94 grams.

In this way, your reasoning is correct and it is probably a mistake in the book.

Answer:

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the answer is its because its malleable and ductile. Copper is a ductile metal.

Explanation:

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Copper can be shaped into wires because it is highly malleable and ductile. Copper is a versatile metal with a rich history that goes back to early human civilizations.

A metal with great versatility and a long history that dates to ancient civilizations is copper. Its colour is reddish-orange, and due to its great electrical and thermal conductivity, it is one of the most crucial metals in many different industries. First off, copper's great conductivity makes it a popular material for electrical wiring and electronics. It is perfect for power transmission, telecommunications, and the manufacture of electrical equipment since it effectively transports electricity. Due to its capacity to transport heavy current loads without overheating or suffering considerable power losses, copper wires are frequently used.

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It is likely that the temperature of the steam is higher than the temperature of the water boiling in the kettle. The intense heat felt by Alka from the puff of steam supports this observation.

In general, the temperature of steam produced from boiling water is higher than the temperature of the water itself. When water boils, it undergoes a phase change from a liquid to a gas, forming steam.

During this phase change, the water absorbs heat energy from the heat source, such as a stove or electric kettle, and converts it into the latent heat of vaporization.

The boiling point of water is 100 degrees Celsius (212 degrees Fahrenheit) at standard atmospheric pressure. At this temperature, the water molecules have enough energy to overcome the intermolecular forces and transition into the gaseous state.

However, steam is hotter than the boiling point of water because it contains additional heat energy in the form of latent heat. The heat energy absorbed during vaporization is stored as latent heat within the steam. As the steam gushes out of the spout of the kettle, it releases this latent heat energy, which can be felt as intense heat.

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The substance begins to boil at 2750⁰C, the substance begins to melt at 1500⁰C, the temperature at which the substance is both a liquid and a gas at 2750⁰C, temperature is the substance both a solid and a liquid​ at 1500⁰C.

Heating curves are the graphical correlations between heat added to a substance. When viewed from a cooling perspective, ie. loss of heat, it is the cooling curve.

The gradient of the cooling curve is related to the heat capacity, the thermal conductivity of the substance, and the external temperature. The more heat is required to change the temperature of the substance, the slower it cools, so the smaller the gradient of the curve. The higher the thermal conductivity, the faster heat is transferred, so the faster the substance cools.

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To solve this problem using the gas laws, we need to use the Ideal Gas Law. This law states that the product of the pressure and the volume of a gas is proportional to the absolute temperature.

The equation of the Ideal Gas Law is the following:

\(\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{\dfrac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2} } \end{gathered}$} }\)

Where:

We clear for V₂:

\(\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{V_2=\frac{P_1V_1T_2}{P_2T_1 } } \end{gathered}$} }\)

Where:

Substituting the known values:

\(\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{V_2=\frac{760\not{kPa}\times0.050 \ L\times20.0\not{k} }{ 380\not{kPa}\times10.0\not{k} } } \end{gathered}$} }\)

\(\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{V_2=\frac{760 \ L}{3800 } } \end{gathered}$} }\)

\(\boxed{\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{V_2\approx0.2 \ Liters} \end{gathered}$} }}\)

Considering the combined law equation, you would have a volume of 9.28 mL at 25.0 C and 2.25 atm.

Boyle's law establishes the relationship between the pressure and the volume of a gas when the temperature is constant.

This law says that volume is inversely proportional to pressure: if pressure increases, volume decreases, while if pressure decreases, volume increases.

Mathematically, Boyle's law states that the multiplication of pressure by volume is constant:

P×V= k

Charles's law establishes the relationship between the temperature and the volume of a gas when the pressure is constant.

This law says that the volume is directly proportional to the temperature of the gas: if the temperature increases, the volume of the gas increases, while if the temperature of the gas decreases, the volume decreases.

Mathematically, Charles' law states that the ratio of volume to temperature is constant:

\(\frac{V}{T}=k\)

Gay-Lussac's law establishes the relationship between the temperature and pressure of a gas when the volume is constant.

This law says that the pressure of the gas is directly proportional to its temperature: if the temperature increases, the pressure increases, while if the temperature of the gas decreases, the pressure decreases.

Mathematically, Gay-Lussac's law states that the ratio of pressure to temperature is constant:

\(\frac{P}{T}=k\)

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law:

\(\frac{PV}{T}=k\)

Considering an initial state 1 and a final state 2, the following holds:

\(\frac{P1V1}{T1}=\frac{P2V2}{T2}\)

In this case, you know:

Replacing in the combined law equation:

\(\frac{1.89 atmx10.9 mL}{294 K}=\frac{2.25 atmxV2}{298 K}\)

Solving:

\(\frac{1.89 atmx10.9 mL}{294 K}\frac{298K}{2.25 atm} =V2\)

9.28 mL= V2

Finally, you would have a volume of 9.28 mL at 25.0 C and 2.25 atm.

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In the carbon dioxide molecule has four shared pairs of electrons, there will be four covalent bonds created, hence option B is correct.

In organic chemistry, covalent bonds are far more prevalent than ionic ones. Two nuclei are simultaneously drawn to one or more pairs of electrons to form a covalent connection. Bonding electrons are those that are present between the two nuclei.

When atoms share electron pairs, covalent bonding results. Atoms create covalent bonds with one another in order to build a complete electron shell, which increases stability.

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At ambient temperatures, it is a gas. A periodic table element is phosphorus. It belongs to group 15 of the periodic table and is categorised as a nonmetal.

It is well known that nonmetals differ from metals in both their physical and chemical characteristics. The right response is D. At ambient temperatures, it is a gas. At room temperature, nonmetals may exist in all three states of matter: liquid, gas, and solid.

With a boiling point of 44.2 °C, phosphorus is a nonmetal that is a gas at ambient temperature. It is neither highly glossy nor an excellent heat conductor.

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Answer:Chlorine:

It is an element that belongs to the p-block and non-metal.

It shows a variable oxidation state.

The oxidation number of chlorine can be - 1, 0, + 1, + 3, + 4, + 5, or + 7 which depends on the substance containing the chlorine.

Explanation:

Cl has a -1 oxidation number, except when bonded to a F or an O.

Answer:

B.  melting point

Explanation:

The melting point is the same as the freezing point.  This temperature is when a liquid freezes and becomes a solid, and it is also when a solid melts and becomes a liquid.  This is why freezers are set at temperatures lower than the freezing point of water.

Answer:

boiling point

Explanation:

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The steps of how plants get energy in the correct order is as follows:

Photosynthesis is the process by which plants and other photoautotrophs convert light energy into chemical energy.

Photosynthesis is carried out by the cells of green plants to synthesize their food in form of sugar powered by the energy from sunlight.

The cells in the leaf use the energy from the sun (light energy) and produce sugars (chemical energy). After which, the sugars are broken down to release energy for use by the cells in a process called cellular respiration.

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1. Identify the given

• Number of particles in Cu = 6.73x10^24

• Number of moles= x?

• We know that 1 mole of copper = 6.023 x 10^23 atoms

2. Calculate moles

number of moles = 6.73x10^24 /6.023 x 10^23

= 11.179

≈11.18 moles of Cu

The amount of energy that would be lost through radioactive decay would be = 9×10^¹⁶J. That is option A.

Radioactive decay is defined as the type of atomic decay that occurs when there is imbalance or instability in the number of protons and neutrons in the atomic nucleus.

The examples of radioactive elements that are useful in the science field include the following:

The radioactive elements are useful in the following fields:

When a radioactive material undergoes a radioactive reaction, 1 mass of the substance would give off energy equivalent to 9×10^¹⁶J. according to Albert Einstein relation.

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The range of a data set tells us that the difference between the lowest and highest values (option D).

Range in statistics is the length of the smallest interval which contains all the data in a sample i.e. the difference between the largest and smallest observations in the sample.

The range of a data set is a way to measure the central tendency of a data. It is the largest measure or central tendency.

Range describes how well the central tendency represents the data. If the range of a data is large, the central tendency is not as representative of the data as it would be if the range was small.

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Orbital notation is a way of representing the electronic configuration of an atom, which describes the arrangement of electrons in its various energy levels or orbitals.

In this notation, each orbital is represented by a box or circle, and the electrons are represented by up or down arrows, which indicate their spin. The number and arrangement of boxes and arrows in the notation follow the rules of the Aufbau principle, the Pauli exclusion principle, and Hund's rule.

The Aufbau principle tells that electrons fill the least energy orbitals before filling higher energy orbitals. The first shell of an atom contains one s orbital, which can hold up to two electrons. The s orbital is represented by a single box or circle, and each electron is represented by an up or down arrow.

The electronic configuration for potassium (K) is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹. In orbital notation, this would be represented as 1s: up arrow, down arrow; 2s: up arrow, down arrow; 2p: up arrow, up arrow, up arrow; 3s: up arrow, down arrow; 3p: up arrow, up arrow, up arrow; 4s: up arrow.

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The sodium is found mainly in the extracellular fluid, most chloride is found in the intracellular fluid.

Intracellular fluid (ICF) is the liquid contained within cells in the body. It represents approximately two-thirds of the body's total fluid volume and is responsible for maintaining the proper functioning of cells. The ICF provides the cells with nutrients and oxygen, helps remove waste products, and helps regulate the cells' internal environment, including temperature and pH. The composition of the ICF is different from the extracellular fluid (ECF) that surrounds the cells and includes a variety of ions, such as potassium, magnesium, and phosphate, as well as proteins and other molecules. The ICF and ECF work together to maintain the body's overall fluid balance and support its various physiological functions.

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