I want to make sure of my understanding
The law of definite proportions it is made of the same elements combined with each other, but the compound produces one compound

But the law of multiple proportions
They are made of the same elements combined with each other, but the compound produces more than one compound
right?

A wetland being drained so a housing development can be built is an example of habitat destruction.

Wetland is a "place in which the land is covered by water—salt, fresh, or somewhere in between—either seasonally or permanently".

Habitat destruction is "the elimination or alteration of the conditions necessary for animals and plants to survive, not only impacts individual species but the health of the global ecosystem".

Housing development a "group of individual dwellings or apartment houses typically of similar design that are usually built and sold or leased by one management".

Hence, drained wetland to a housing development causes habitat destruction.

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7.2 g progesterone 22.32 g dimethyl-β-cyclodextrinad 360 mL, purified water

To calculate the quantity of each ingredient needed to prepare twenty-four 15-mL containers of the progesterone nasal spray, the following steps will be used.

Firstly, it is important to note the given values;

they are as follows:

Progestrone = 0.30 g

Dimethyl-β-cyclodextrin = 0.93 g

Water = ad 15 mL

Next, convert the number of containers to liters;

24 x 15mL = 360 mL or 0.36L

Therefore, to calculate the quantity of each ingredient, the formula below will be used:

Quantity of each ingredient = (Amount required per 1L) x 0.36L

Now, let's calculate the quantity of each ingredient.

1. Progesterone

Quantity of progesterone = (0.30 g/L) x 0.36L

Quantity of progesterone = 0.108 g

Therefore, the quantity of progesterone needed to prepare twenty-four 15-mL containers of the progesterone nasal spray is 0.108 g.

2. Dimethyl-β-cyclodextrin

Quantity of dimethyl-β-cyclodextrin = (0.93 g/L) x 0.36L

Quantity of dimethyl-β-cyclodextrin = 0.335 g

Therefore, the quantity of dimethyl-β-cyclodextrin needed to prepare twenty-four 15-mL containers of the progesterone nasal spray is 0.335 g.

3. Water

Water is added to make up the remaining volume required, which is 360 mL.

Therefore, the quantity of water needed is:

Quantity of water = 360 mL - (0.30 g + 0.93 g)

Quantity of water = 359.77 mL

Therefore, the quantity of water needed to prepare twenty-four 15-mL containers of the progesterone nasal spray is 359.77 mL.

Answer: 7.2 g progesterone22.32 g dimethyl-β-cyclodextrinad 360 mL, purified water

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To identify whether a chemical shift has taken place or not, the boiling point of sugar must be known.

Which is a chemical change ?

A chemical change occurs when one chemical substance is changed into one or more distinct chemicals, like when iron is changed into rust. Chemical changes are brought about by the process of chemical reactions, and the substances that are produced have varied qualities because of the diverse ways that their atoms and molecules are structured.

If sugar is dissolved in water in a glass, we can evaporate the water to return to the solid sugar inside the container. This is a phase transition, which is a physical alteration. A phase change occurs when the new substance's condition or form changes.

In the beaker, sugar will re-crystallize at a significantly higher temperature of roughly 320°F rather than boiling. The water in the beaker will eventually reach its boiling point as the temperature rises and begin to evaporate as steam. In the meantime, the bottom of the solution will start to crystallize again with the sugar.

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The valence electron determines whether an ionic or covalent bond develops between two atoms.

An atom's outer shell electrons, known as valence electrons, can take a role in the creation of chemical bonds. When two atoms establish a single covalent bond, normally, both atoms contribute one valence electron to create a shared pair.

Ionic bonds, also known as electrovalent bonds, are a type of linkage created in a chemical molecule by the electrostatic attraction of ions with opposing charges. When one atom's valence (outermost) electrons are permanently transferred to another atom, a bond of this kind is created. The one or two and three are lost and gained in ionic bond formation, but particles with four valence electrons are neither lost nor gained. The four electrons are generally shared to form a covalent bond.

Hence, the valence electron decides the type of the bond.

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Answer: A FILTERING

Explanation:

WHEN YOU FILTER YOU SEPARATE (sorry for caps) btw can you check out my recent question plz

Answer:

Fold the filter paper in fourths before placing it in the funnel and pour all the liquid through the funnel.

Answer:

There arr 1.5*1024 molecules in 2.40 moles of H2O.

Answer:

loses, gains

Explanation:

In the ionic compound aluminum selenide, each atom of aluminum will lose electrons while each atom of selenium will gain the electrons.

An ionic compound is an interatomic bond formed between a metal and non-metal. The metal is less electronegative compared to the non-metal. In this case, the metal will lose electrons to become positively charged whereas the non-metal, selenium will gain the electron to become negatively charged.

The electrostatic attraction between these oppositely charged ions leads to the formation of the ionic bond.

Answer:

A. It can travel through empty space

Explanation:

Unlike sound it light can travel at an empty space or vacuum.

Hope it helps <3 and Amen.

Answer:

the answer on plato / edmentum is A B and D

Explanation:

hope this helps <3

Answer:

wd

Explanation:

h

The total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

To calculate the total charge that flows while the battery is being charged, we can use the relationship between electrical energy, potential difference, and charge.

The electrical energy (E) stored in the battery is given as 64 mega Jules (64 MJ). The potential difference (V) provided by the battery is 330 volts. We know that the energy (E) is equal to the product of the potential difference (V) and the charge (Q):

E = V * Q

Since the charging process is 100% efficient, all the electrical energy supplied is stored in the battery. Therefore, we can rearrange the equation to solve for the charge (Q):

Q = E / V

Substituting the given values, we have:

Q = 64 MJ / 330 V

To perform the calculation, we need to convert mega Jules (MJ) to joules (J) since the SI unit of energy is joules. One mega Joule is equal to 1 million joules:

Q = (64 * 10^6 J) / 330 V

Calculating the division:

Q ≈ 193,939.39 Coulombs

Therefore, the total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

This value represents the quantity of electric charge transferred during the charging process, and it indicates the amount of electricity that enters the battery.

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Explanation:

See image

To oxidize 10 g of cyclohexanol, 200 mL of 5.0% w/v bleach (NaOCl) is needed.

Before calculating the volume of bleach, we need to find:

\(Mass of cyclohexanol = 10 g\\Concentration of bleach (NaOCl) = 5.0\% w/v\\Convert the mass of cyclohexanol to moles.\\Molar mass of cyclohexanol (C6H12O) = 100.16 g/mol\\Moles of cyclohexanol = mass / molar mass\\Moles of cyclohexanol = 10 g / 100.16 g/mol\)

Determine the stoichiometry between cyclohexanol and bleach.

From the balanced equation for the oxidation of cyclohexanol, we know that:

1 mole of cyclohexanol reacts with 1 mole of bleach (NaOCl)

Calculate the moles of bleach required.

\(Moles\ of\ bleach\ (NaOCl) = moles\ of\ cyclohexanol\)

Calculate the volume of bleach using its concentration.

\(Volume\ (in\ mL) of\ bleach = (moles\ of\ bleach / concentration\ of\ bleach) * 1000\\Volume (in mL) of bleach = (moles of bleach / 0.05) * 1000\\Substituting the value of moles of bleach\\Volume (in mL) of bleach = (moles of cyclohexanol / 0.05) * 1000\\Substituting the value of moles of cyclohexanol\\Volume (in mL) of bleach = (10 g / 100.16 g/mol) / 0.05 * 1000\)

Simplifying:

\(Volume\ (in\ mL)\ of\ bleach = 199.64\ mL\)

Therefore, to oxidize 10 g of cyclohexanol, you would need approximately 200 mL of 5.0% w/v bleach (NaOCl).

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Answer:

Outer planets are significantly colder than other planets! The answer is B.

Explanation:

The main difference between inner and outer planets is that inner planets have a high temperature compared to outer planets.

Answer:

difficile infection. By reintroducing a healthy diversity of bacteria, fecal transplantation can re-establish colonization resistance to prevent C. difficile from gaining a foothold and becoming a dominant organism in the environment of the gut.

Explanation:

The coefficients in chemical equations involving only gases represent two types of quantities: Stoichiometric coefficients and Volume coefficients.

The term "molar ratio" means what exactly?

As a balanced chemical reaction, the ratio of any two compounds' mole amounts—measured in moles—is known as the mole ratio. In the balancing chemical equation, the proportions of the molecules required to accomplish the reaction are compared.

Stoichiometric coefficients: These coefficients represent the relative numbers of molecules or moles of the reactants and products in the balanced chemical equation. They indicate the ratio in which the reactants combine and the products are formed.

Volume coefficients: These coefficients represent the volumes of gases involved in the reaction at constant temperature and pressure, according to Avogadro's principle. The volumes of gases involved in a chemical reaction are directly proportional to the number of moles of gases involved, as well as to the coefficients in the balanced chemical equation.

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Answer: well the receptacle connect the stalk to the flower and to support the flower and keeps the flower in an elevated position so as to attract the insects

Explanation: I don’t know if this helped

The full meaning of 3-pga is 3-phosphoglyceric acid. 3-pga is a very important chemical compound and it can be found in both the Glycolysis and Calvin -Benson cycle.

After 3-pga is phosphorylated, it is reduced by NADPH'

Phosphorylation is a chemical process of adding phosphate to a chemical compund.

NADPH is known as a cofactor in the Anabolic process. Its full meaning is Nicotinamide Adenine Dinucleotide Phosphate Hydrogen. It is an electron donor.

When 3-pga is phosphorylated, and additional phosphate is added to its chemical compound. During photosynthesis, NADPH reacts with Phosphorylated 3-pga and it undergoes a reduction reaction.

During the reduction reaction, 3-pga gains electrons.

Therefore, After 3-pga is phosphorylated, it is reduced by NADPH.

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The temperature of the exiting liquid will be equal to the temperature at the inlet, since the process is isentropic.

To estimate the work required to compress the saturated water vapor up to P = 10 bar and T = 4000C, you can use the ideal gas law.

The equation is PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature. Since the ideal gas law is based on the assumption that the gas behaves as an ideal gas, the temperature must remain constant while the volume is changing.

Thus, the work done is equal to the area under the PV curve, which can be calculated using the equation W = -nRT ln (V2/V1).

For the second part, the pump is operating isentropically, meaning that the entropy of the system does not change. The work done is equal to the change in enthalpy, which can be calculated using the equation W = h2 - h1. The enthalpies of the liquid water can be looked up in a thermodynamic property table.

The temperature of the exiting liquid will be equal to the temperature at the inlet, since the process is isentropic.

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Answer:

Its l and ll

Explanation:

it doesn't mix with moisture that would be sulfurous smog

Answer: 1 and 3

qwq rawr

A face-centered cubic (FCC) lattice has 8 corners, each corner having an atom, and 6 faces, each face having an atom.

Therefore, there are 8+6=14 atoms in the unit cell. Since the atoms at the corners are shared with other cells, each unit cell has 4 unique atoms.

The answer is D) 4 atoms per unit cell.

A face-centered cubic (FCC) lattice has 8 corners, each corner having an atom, and 6 faces, each face having an atom. Therefore, there are 14 atoms in the unit cell. Since the atoms at the corners are shared with other cells, each unit cell has 4 unique atoms, meaning a metal such with a face-centered cubic lattice will have 4 atom(s) per unit cell.

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Point source pollution, like industrial waste flowing directly into a river from a factory drain, is one example. Plastic grocery bags and parking areas were contaminated by pollutants including motor oil leaks.

Two instances of how humans directly affect the water in watersheds are the construction of dams and the rerouting of rivers. Mankind have used water as just a resource, obtaining our drinking water from watersheds. As water use may be controlled to be sustainable, this need not have a bad effect.

The effects of modern livestock farming, development, deforestation, and Dioxide emissions, among several other things, are accelerating the biodiversity decline because to desertification, ocean and river pollution, and global warming.

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To find the empirical formula of the compound, you need to find the ratio of the elements present in the smallest whole numbers. You can do this by dividing each element's mass by its atomic mass and then dividing the result by the smallest ratio found.

For example:

Mercury (Hg) atomic mass = 200.59 g/mol

Oxygen (O) atomic mass = 15.999 g/mol

Hg mass = 20.3 g / 200.59 g/mol = 0.101 mol

O mass = 1.70 g / 15.999 g/mol = 0.106 mol

Dividing the two mole ratios by the smaller ratio (0.106), we get:

Hg = 0.101 / 0.106 = 0.95 (rounded to 1)

O = 0.106 / 0.106 = 1.0

So, the empirical formula of the compound is HgO.

Answer:

HgO

Explanation:

Answer:

Thus, the element containing the greatest number of atoms is 12 g He. Thus, the correct option is (4) 12 g He. Note: The number of atoms of a compound is Avogadro's number for 1 mole of compound. The number 6.022×1023 is known as Avogadro's number.

Explanation:

(4)✔️ 12 g He

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Answer:

120gram I think so this is the answer if the answer is correct plz mark me as brainliest.

The concentration of diluted solution is 0.2 M.

The concentration and volume are related by the formula - \( M_{1}\) \( V_{1}\) = \( M_{2}\) \( V_{2}\), where \( M_{1}\) and \( M_{2}\) are initial and final concentration. \( V_{1}\) and \( V_{2}\) are initial and final volumes.

Keep the values in relation to find the concentration of final diluted solution.

0.652 × 20.6 = \( M_{2}\) × (44.2 + 20.6)

Performing addition on Right Hand Side

0.652 × 20.6 = \( M_{2}\) × 64.8

Performing multiplication and division

\( M_{2}\) = 13.43÷64.8

\( M_{2}\) = 0.2 M

Thus, the diluted solution is 0.2 M.

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Answer:

Henderson-Hasselbalch equation relates the pH with the dissociation constant of the acid. The pH of the buffer solution will be 3.90.

The Henderson-Hasselbalch equation is used to calculate the pH or the concentration of the conjugate base and acid.

The Henderson-Hasselbalch equation can be given as,

pH = pKa + log [A⁻] ÷ [HA]

The dissociation reaction is given as,

HA⁺ + H2O ⇌ H3O⁺ + A⁻

NaA → Na⁺ + A⁻

For this first pKa is calculated as:

pKa = - log (1. 0 x 10⁻⁴)

Substituting the value of pKa in Henderson-Hasselbalch equation pH is determined as:

pH = - log (1. 0 x 10⁻⁴) + log [0.08] ÷ [0.1]

= 4 + (-0.0969)

= 3.90

Therefore, 3.90 is the pH of the solution.

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Option-a. is false.As a free redical is unstable they steal the electrons from other compound.

A radical is said to be free radical if atom molecule or ion that has atleast one unpaired valence electrons. This radicals are highly reactive. The presence of an unpaired electron results common properties that shared by most of the radicals. Many radicals are unstable and highly reactive. They can donate an electron to other molecules or accept an electron from other molecules. Free radicals can be neutralized by antioxidants to protect the cell against the toxicity. It can nutralize free radical by giving the extra electro needed to make tge pair. or by breaking down the free radicals.Free radicals can steal electrons from phopholipids found in the cell membrane.

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