ASAP can someone please do the double replacement reaction for this? thanks!

Answer:

HEY THERE!!

Explanation:

The atomic radii increase, moving across a period to the left and down in a group

HOPE THIS HELPED HAVE A NICE DAY!!! <33

Answer:

109.5 Degrees

Explanation:

Because CH4 is sp4 hybridized (Carbon is bonded to the 4 Hydrogens), the geometry of the molecule must be tetrahedral. Tetrahedral moleculues have bond angles of 109.5 Degrees.

The two ways in which the physical state of matter can be changed are melting and freezing.

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Answer:

\(\boxed {\boxed {\sf 60 \ mL}}\)

Explanation:

In this problem, volume and pressure are changing, so we use Boyle's Law. This states that the volume of a gas is inversely proportional to the pressure. The formula for this law is:

\(P_1V_1=P_2V_2\)

Originally the gas has a volume of 30 milliliters and a pressure of 4 atmospheres.

\(4 \ atm * 30 \ mL=P_2V_2\)

The pressure is changed to 2 atmospheres, but the new volume is unknown.

\(4 \ atm * 30 \ mL = 2 \ atm *V_2\)

We want to solve for the new volume (V₂). It is being multiplied by 2 atmopsheres. The inverse operation of multiplication is division, so we divide both sides by 2 atm.

\(\frac{4 \ atm * 30 \ mL}{ 2 \ atm}= \frac{ 2 \ atm *V_2}{2 \ atm}\)

\(\frac{4 \ atm * 30 \ mL}{ 2 \ atm}= V_2\)

The units of atmospheres (atm) cancel.

\(\frac{4 * 30 \ mL}{ 2 }= V_2\)

\(\frac{120 \ mL}{2}= V_2\)

\(60 \ mL= V_2\)

The new volume of the gas is 60 milliliters.

The correct answer is A. Valence shell electron pair repulsion (VSEPR) theory is based on the concept that electrons in a molecule will repel each other due to their negative charge. This theory helps to predict the shape and geometry of molecules based on the repulsion of electrons in the valence shell.

Valence shell electrons are the outermost electrons in an atom that participate in chemical bonding. These electrons are located in the highest energy level or valence shell of the atom and determine the chemical properties of an element. The number of valence electrons in an atom is typically equal to the group number of the element in the periodic table, with the exception of the transition metals.

For example, carbon is in group 4, so it has 4 valence electrons, while oxygen is in group 6, so it has 6 valence electrons. Valence electrons are important in chemical reactions as they are involved in the formation of chemical bonds between atoms, either by sharing or transferring electrons.

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Answer:

solid dispersed in gas

Fog is a type of colloid in which tiny droplets of liquid, such as water, are suspended in a gas, such as air. Fog can be considered a liquid-in-gas colloid since the dispersed-phase droplets are composed of liquid, and the continuous-phase is composed of gas.

Other examples of colloids include smoke (solid particles dispersed within a gas), whipped cream (gas in a liquid), mayonnaise (liquid in a liquid), gelatin (solid in a liquid), and clouds (liquid in a gas).

Fog can be categorized according to the type of gas which is the continuous phase. For instance, water-in-air fog is the most common type, while smoke of air constitutes a solid-in-air colloid. Other types of fog include oil-in-air (liquid-in-gas colloid) and dust-in-air (solid-in-gas colloid).

Colloids form when particles of the dispersed phase are typically larger than 1 nanometer, yet small enough to remain suspended in the continuous phase due to Brownian motion or other forces. The particles remain suspended due to the attraction of the particles for each other (Induced Charge Electrophoresis) and for the carrier phase molecules.

Understanding colloids is important for a variety of applications, such as drug delivery, material engineering, food science, and wastewater treatment

Fog is an example of a colloid that has the phase of "liquid dispersed in gas."

When air becomes saturated with water vapour and condenses into minute water droplets close to the Earth's surface, fog is a natural meteorological occurrence.

Fog is a foggy mist formed when little liquid water droplets are scattered across the atmosphere.

A colloidal system is produced when liquid water droplets are suspended in the gas phase (air).

Thus, because these droplets are so tiny, they can hang suspended in the air for a long time, giving fog its distinctive appearance.

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It can be inferred that due to the relatively slight difference in electronegativity between carbon and hydrogen, and because of its symmetrical tetrahedral shape, methane CH4 is a nonpolar molecule.

Methane is a colorless, odorless gas that occurs naturally in large quantities and is also a byproduct of some human activities. Methane is the most basic hydrocarbon in the paraffin family and one of the most potent greenhouse gases. It has the molecular formula CH4.

Methane is the second most prevalent anthropogenic GHG after CO2, accounting for approximately 20% of world emissions. Compared to carbon dioxide, methane traps heat in the atmosphere 25 times more effectively.

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Answer:

I know that

Explanation:

nickel is like to and tc is like nickel they both have something

Answer:

C. Period

Explanation:

The elements from this section of the periodic table belongs to the same period.

A period on the periodic table is a horizontal arrangement of elements according to their atomic number.

Answer:

iv it does not make but if im wrong dont report please!

Answer:

A

Explanation:

particles are frozen and hence will vibrate in their fixed positions

Answer:

Explanation:

H2O has 2 H atoms and 1 O atom

Krypton is a chemical element with the symbol Kr and atomic number 36. Its name derives from the Ancient Greek term kryptos, which means "the hidden one."

Thus, It is a rare noble gas that is tasteless, colourless, and odourless. It is used in fluorescent lighting frequently together with other rare gases. Chemically, krypton is unreactive.

Krypton is utilized in lighting and photography, just like the other noble gases. Krypton plasma is helpful in brilliant, powerful gas lasers (krypton ion and excimer lasers), each of which resonates and amplifies a single spectral line.

Krypton light has multiple spectral lines. Additionally, krypton fluoride is a practical laser medium.

Thus, Krypton is a chemical element with the symbol Kr and atomic number 36. Its name derives from the Ancient Greek term kryptos, which means "the hidden one."

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Answer:

c

Explanation:

Answer:

A substance

Explanation:

Answer:

kevin gates with his fine self.

Explanation:

Answer:

The possible valances can be determined by electron configuration and electron negativity

Good Luck even though this was asked 2 weeks ago

Explanation:

All atoms strive for stability. The optima electron configuration is the electron configuration of the VIII A family or inert gases.

Look at the electron configuration of the nonmetal and how many more electrons the nonmetal needs to achieve the stable electron configuration of the inert gases. Non metals tend to be negative in nature and gain electrons. ( They are oxidizing agents)

For example Florine atomic number 9 needs one more electron to reach a valance number of 8 electrons to equal Neon atomic number 10. Hence Flowrine has a valance of -1

Oxygen atomic number 8 needs two more electrons to reach a valance number of 8 electrons to equal Neon atomic number 10. Hence Oxygen has a valance charge of -2.

Non metals with a low electron negativity will lose electrons when reacting with another non metal that has a higher electron negativity. When the non metal forms an ion it is necessary to look at the electron structure to determine how many electrons the element can lose to gain stability.

For example Chlorine which is normally -1 like Florine when it combines with oxygen can be +1, +3, + 5 or +7. It can lose its one unpaired electron, or combinations of the unpaired electron and sets of the three pairs of electrons.

Answer:

C 50 percent

Explanation:

A. 0 percent

the moon and the sun aren't lined up on a new moon.

The graph BEST represents the relationship is (c) Graph A, because there is an inverse (indirect) relationship between pressure and volume.

To determine the relationship between pressure and volume based on experimental data, we need to consider the behavior of a gas when its volume changes while keeping other variables constant, such as temperature and the number of gas particles.

According to Boyle's Law, which describes the relationship between pressure and volume of a gas at constant temperature, when the volume of a gas decreases, the pressure increases proportionally, and vice versa. Mathematically, this relationship is expressed as P1V1 = P2V2, where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume, respectively.

With this understanding, let's analyze the given options:

Graph A, because there is a direct relationship between pressure and volume: This statement is incorrect. In a direct relationship, both variables increase or decrease together. However, in the context of pressure and volume, they have an inverse relationship, not a direct one.

Graph B, because there is a direct relationship between pressure and volume: This statement is incorrect for the same reasons mentioned above.

Graph A, because there is an inverse (indirect) relationship between pressure and volume: This statement is correct. As discussed earlier, pressure and volume have an inverse relationship according to Boyle's Law.

Graph B, because there is an inverse (indirect) relationship between pressure and volume: This statement is also incorrect. Both graphs cannot represent an inverse relationship because one of them is incorrect.

In summary, This graph would show a decreasing trend of volume as pressure increases, following Boyle's Law.

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Answer:

it disappeared loll jk

it obviously dried

well you may Mark me as brainliest

Specific heat capacity if the unknown metal is -0.450 J/(g°C).

The measure of heat complexity needed to increase the temperature of a single unit of substance mass by one degree Celsius is known as specific heat capacity. This factor is crucial in determining how much energy is required for temperature changes in a given substance.

q = mcΔT

where q is the change in thermal energy, m is the mass of the metal, c is its specific heat capacity, and ΔT is the change in temperature.

In this case, we have:

m = 150 g

ΔT = 22.4°C - 12.6°C = 9.8°C

q = -662 J

Plugging in the values,

-662 J = (150 g) c (9.8°C)

Solving for c, we get:

c = -662 J / (150 g × 9.8°C) = -0.450 J/(g°C)

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Answer:

40 KM an hour.

Explanation:

Answer:

40 KM an hour.

Explanation:

These substances can burn the skin, eyes, and mucous membranes and can also cause respiratory issues, such as lung damage or asthma. Overall, strong acids and bases are hazardous chemicals that must be handled with extreme care to avoid injury and environmental damage.

Strong acids and bases belong to the class of chemical hazards. Strong acids and bases are corrosive materials, which means they can cause severe damage to living tissues, including skin and eyes. The potential severity of strong acids and bases makes them hazardous chemicals. An acid is a substance that donates a hydrogen ion (H+) to another substance, whereas a base accepts an H+ ion. When a strong acid is mixed with water, it will break down almost entirely, releasing H+ ions. Some examples of strong acids include sulfuric acid, hydrochloric acid, and nitric acid. These acids can cause severe burns and can even corrode metal. Bases are substances that produce OH- ions when they dissolve in water. Strong bases like sodium hydroxide and potassium hydroxide can be highly corrosive and can cause severe damage to tissues. These substances can burn the skin, eyes, and mucous membranes and can also cause respiratory issues, such as lung damage or asthma.Overall, strong acids and bases are hazardous chemicals that must be handled with extreme care to avoid injury and environmental damage.

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The process of photosynthesis requires water and air in addition to grow ,obtain their energy from the sun  and supply oxygen to the environment .

It is defined as a process by which plants and other photosynthetic organisms convert the light energy in to chemical energy  through the process of cellular respiration.

Some of the energy which is converted  is stored in molecules of carbohydrates like sugar and starches  which are made up of from carbon dioxide and water . Photosynthetic organisms which can perform photosynthesis  are algae and cyanobacteria. Photosynthesis is largely responsible for producing and maintaining the content of oxygen in earth's atmosphere.

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Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\\)

From the question

mass = 10.686 g

volume of liquid gallium = 54.5 mL

So we have

\(density = \frac{10.686}{54.5} \\ = 0.1960733944...\)

We have the final answer as

Hope this helps you

From the first equation, the mole ratio of NaOH to  \(H_2\) is 2:1.

39.3 g of NaOH = 39.3/40 = 0.98 mol

The equivalent mole of  \(H_2\) = 09.8/2 = 0.49 mol

1 mol of gas at STP = 22.4 L

0.49 mol = 0.49 x 22.4 = 10.98 L of \(H_2\)

From the second equation, the mole ratio of \(SnO_2\) and water is 1:2.

57.6 g of \(SnO_2\) = 57.6/150.7 = 0.38 mol

Equivalent mole of water = 0.38 x 2 = 0.76 mol

0.76 mol of water = 0.76 x 18 = 13.68 grams of water.

For the third equation, the mole ratio of propane and oxygen for a complete combustion reaction is 1:5. This can be converted to a volume ratio.

Thus, with 0.828 L of propane, the equivalent volume of oxygen required for complete combustion would be:

0.828 x 5 = 4.14 L

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Answer:

The above statement is False

Answer:

yy

Explanation: