which element has a grater atomic radius ?phosphorus or bismuth?

Answer:

wd

Explanation:

h

Answer:

Speed =d/t. 200÷10=21÷1000=0.021 km/h

Explanation:

S=D/T

Answer:

mass

Explanation:

mass is weight mass is weight mass is weight

This is because side reactions and unwanted byproducts are often favored at higher temperatures.

To avoid the formation of a side product in this experiment, the best approach would be to keep the reaction at a low temperature and avoid overheating the product during distillation. This is because side reactions and unwanted byproducts are often favored at higher temperatures. By maintaining a low temperature, the reaction can be controlled to favor the desired product and minimize the formation of side products.

Drying the aqueous layer, using pure sodium iodide, using pure silver nitrate, and venting the gases out of the separatory funnel are not specifically related to preventing the formation of side products in this context. They may be relevant for other aspects of the experiment, but they would not directly address the formation of side products.

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The vapor pressure of the solution is approximately 13.4 torr.

The vapor pressure of a solution can be calculated using Raoult's law, which states that the vapor pressure of a solution is directly proportional to the mole fraction of the solvent. In this case, water is the solvent and ethylene glycol is the solute.

Given that the vapor pressure of pure water at 20°C is 17.5 torr, we can calculate the mole fraction of water in the solution. Since the solution is 21.6% ethylene glycol, the mole fraction of water (solvent) is 1 - 0.216 = 0.784.

Using Raoult's law, the vapor pressure of the solution is:

vapor pressure of solution = mole fraction of solvent * vapor pressure of pure solvent

vapor pressure of solution = 0.784 * 17.5 torr

vapor pressure of solution ≈ 13.7 torr

Rounding to three significant figures, the vapor pressure of the solution is approximately 13.4 torr.

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Answer:

9 protons

Explanation:

By looking at the periodic table, you will see that Fluorine has 9 protons. Since the number of electrons equal the number of protons, Fluorine has 9 electrons as well. Meanwhile, it's mass number of 19, minus 10 neutrons, gives you 9 protons or electrons. Hence, the atom would be Fluorine.

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Answer:

i think so for this i will 9 protons . atomic mass is 19. 10 neutrons

Answer:

Hello

Explanation:

utd847dcpyc08td0

Answer:

Hydrogen burns in oxygen to form water. The flame is almost colourless. Mixtures of hydrogen and oxygen (or hydrogen and air) can be explosive when the two gases are present in a particular ratio, so hydrogen must be handled very carefully.

Cleaning supplies should be stored away from food for several important reasons:

1. Contamination: Cleaning supplies often contain chemicals that can be harmful if ingested. If they come into contact with food, they can contaminate it and pose a risk to human health. Some common cleaning agents, such as bleach, ammonia, and disinfectants, can cause nausea, vomiting, diarrhea, or more serious health issues if consumed.

2. Chemical reactions: Certain cleaning products can undergo chemical reactions when they come into contact with certain food items. For example, mixing bleach and acidic foods or liquids (such as vinegar, citrus fruits, or juices) can create toxic chlorine gas. Storing cleaning supplies near food increases the risk of accidental mixing or spillage, leading to dangerous chemical reactions.

3. Packaging mix-ups: Cleaning supplies and food items often come in similar packaging, such as spray bottles or containers. Placing them in close proximity increases the chances of mistakenly using the wrong product. Consuming cleaning products can be extremely hazardous and cause severe harm or even death.

4. Cross-contamination: Even if the cleaning supplies don't directly contact the food, there is still a risk of cross-contamination. Residual chemicals or fumes from the cleaning supplies can migrate to nearby food items, compromising their safety and quality.

To ensure food safety, it is crucial to store cleaning supplies in a separate, designated area away from food storage areas, preferably in a locked cabinet or a well-ventilated storage space. It's important to read and follow the instructions on cleaning product labels, use them as intended, and keep them out of reach of children and pets.

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When NaCl, AlCl3, and CaCl2 are dissolved in water, they dissociate into their respective ions. The balanced chemical equations for the dissociation of these salts in water are:

NaCl (s) + H2O (l) → Na+ (aq) + Cl- (aq)

AlCl3 (s) + 6H2O (l) → Al3+ (aq) + 3Cl- (aq) + 6H2O (l)

CaCl2 (s) + 2H2O (l) → Ca2+ (aq) + 2Cl- (aq) + 2H2O (l)

In these equations, (s) represents solid, (l) represents liquid, and (aq) represents aqueous, or dissolved in water. When these salts dissolve in water, they separate into their respective cations and anions, which are now free to move about in the solution and interact with other ions or molecules present.

These dissociation reactions are essential for understanding the behavior of ionic compounds in solution, as they provide insight into how these compounds interact with water and other dissolved species.

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Hydrolases are responsible for regulating various biochemical reactions in living organisms by catalyzing the hydrolysis of various substrates.

These enzymes act by breaking down complex molecules into smaller components by adding a water molecule, thus aiding in processes such as digestion, metabolism, and other cellular activities. Some common examples of hydrolases include proteases, which break down proteins; lipases, which break down lipids; and carbohydrases, which break down carbohydrates. Each type of hydrolase is specialized in targeting specific types of substrates and plays a crucial role in maintaining homeostasis within the organism.

Moreover, hydrolases are essential in regulating the balance between synthesis and degradation of biomolecules, allowing cells to adapt to changes in environmental conditions and respond to cellular signals. By controlling the rate at which molecules are broken down, these enzymes help maintain optimal levels of energy production, nutrient availability, and waste removal within the cell. In summary, hydrolases are responsible for regulating various biochemical processes in living organisms by catalyzing the hydrolysis of substrates, thus playing a vital role in digestion, metabolism, and maintaining cellular homeostasis.

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Answer:

The formula of the compound formed by Iron (ii) ions and chromate ions is FeCrO₄

Explanation:

Iron (ii) ions, Fe²⁺ have a positive charge of +2. Chromate ions, CrO₄²⁻, on the other hand have a positive charge of -2. When iron (ii) ions and chromate ions combine two form a compound, each ion will contribute a mole of ion towards the formation of the compound. This is in line with the idea that a compound carries no charge. The positive charge (+2) of the iron (ii) ions are balanced by the negative charge of the chromate ions as shown mathematically as follows;

+2 + (-2) = 0; i.e. Fe²⁺ + CrO₄²⁻ = FeCrO₄

Therefore, the formula of the compound formed by Iron (ii) ions and chromate ions is FeCrO₄

The formula formed by the compound by Iron ii ions and chromate ions will be FeCrO₄

Iron (ii) ions \(\rm Fe^{2+}\) have a positive charge of +2. Chromate ions, \(\rm CrO_3^{2-}\)  on the other hand, have a positive charge of -2.

When iron (ii) ions and chromate ions combine to form a compound, each ion will contribute a mole of ion towards the formation of the compound.

This is in line with the idea that a compound carries no charge. The positive charge of the iron (ii) ions 2+ are balanced by the negative charge of the chromate ions -2 as shown mathematically as follows;

\(\rm +2+(-2)=0\)

\(\rm Fe^{2+} +CcrO_4^{2-}=FeCrO_4\)  

Thus the formula of the compound formed by Iron (ii) ions and chromate ions is FeCrO₄

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1. LiCl (Lithium chloride) CsBr (Cesium bromide) NaCl (Sodium chloride).

3. Group 1 elements, also known as alkali metals, form 1+ ions because they have one valence electron in their outermost energy level.

4. The formula of the sulfide ion is S2-.

5. The ions in NaCl stay together due to electrostatic attraction between the oppositely charged ions.

6. The formula of potassium sulfide is K2S. In this compound, potassium (K+) forms a 1+ ion, and sulfide (S2-) forms a 2- ion.

1. The three ionic compounds from the given list are:

LiCl (Lithium chloride)

CsBr (Cesium bromide)

NaCl (Sodium chloride)

Dot-and-cross diagrams for the three ionic compounds:

2. LiCl:

Li (Lithium) has 1 valence electron while Cl (Chlorine) has 7 valence electrons. The electron from Li is transferred to Cl, resulting in the formation of Li+ and Cl- ions. The dot-and-cross diagram would show Li with no dots and Cl with 8 dots around it.

CsBr:

Cs (Cesium) has 1 valence electron while Br (Bromine) has 7 valence electrons. Similar to LiCl, the electron from Cs is transferred to Br, resulting in Cs+ and Br- ions. The dot-and-cross diagram would show Cs with no dots and Br with 8 dots around it.

3. NaCl:

Na (Sodium) has 1 valence electron while Cl (Chlorine) has 7 valence electrons. Again, the electron from Na is transferred to Cl, forming Na+ and Cl- ions. The dot-and-cross diagram would show Na with no dots and Cl with 8 dots around it.

4. Group 1 elements, also known as alkali metals, form 1+ ions because they have one valence electron in their outermost energy level. These elements have a strong tendency to lose this valence electron to achieve a stable electron configuration similar to the noble gas configuration.

The formula of the sulfide ion is S2-.

5. The ions in NaCl stay together due to electrostatic attraction between the oppositely charged ions. In NaCl, the sodium (Na+) ion has a positive charge, and the chlorine (Cl-) ion has a negative charge. These opposite charges attract each other, forming an ionic bond.

The strong electrostatic attraction between Na+ and Cl- keeps the ions together in a crystal lattice structure.

6. The formula of potassium sulfide is K2S. In this compound, potassium (K+) forms a 1+ ion, and sulfide (S2-) forms a 2- ion. To balance the charges, two potassium ions are required for every sulfide ion.

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The number of moles of sodium (Na) in 3.4 x 10^23 atoms is approximately 5.64 moles.

In the first paragraph, the main answer is that there are approximately 5.64 moles of sodium (Na) in 3.4 x 10^23 atoms.

Now, let's explain the calculation in the second paragraph. The mole is a unit of measurement used in chemistry to quantify the amount of a substance. One mole of any element contains Avogadro's number of atoms, which is approximately 6.022 x 10^23. In this case, we have 3.4 x 10^23 atoms of sodium (Na). To convert this into moles, we divide the number of atoms by Avogadro's number.

Mathematically, the calculation is as follows:

Moles of Na = (Number of atoms of Na) / (Avogadro's number)

Moles of Na = (3.4 x 10^23) / (6.022 x 10^23)

Moles of Na ≈ 5.64 moles

Therefore, there are approximately 5.64 moles of sodium (Na) in 3.4 x 10^23 atoms.

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Answer:

0.142

Explanation:

Answer:

0.142 moles.

You would have to convert the algorithm to a broken down version of the compound.

NH4NO3(aq] → NH+4(aq] + NO−3(aq]

The ammonium is removed for this case, concentration gets broken down to zero.

So here, if 1 liter is equal to 10 x 10 x 10 milliliters...

use the formula of n and c to help you figure out the moles.

C is equal to N divided by V, so in that case...

N equals C times V.

C times V is 0.425, or 17 over 40 in simplest form.

From there, multiply 17 over 40 by the current moles, cross out the liters, and multiply by 335, then, 10 to the power of -3. You have to flip it to negative, because it will cancel out either way. Change the equation by the liters, and you have 0.125

Hence, your correct answer is 0.125

Option 1 is correct compound. 2-bromopentanal and pentanal do not have alpha-hydrogens and therefore cannot undergo aldol addition reaction in aqueous sodium hydroxide.

Out of the given options, only 2-methyl pentanal and 3-chloropentanal can undergo aldol addition reaction in the presence of aqueous sodium hydroxide. This is because both of these compounds have alpha-hydrogens (hydrogens attached to the carbon adjacent to the carbonyl group), which are necessary for the aldol reaction to occur.

Aldol condensations play an important role in the creation of organic compounds because they provide a dependable way to create carbon-carbon bonds. For instance, the Robinson annulation reaction sequence results in aldol condensation, and the Wieland-Miescher ketone product is an essential component in a variety of chemical synthesis processes.

In the aldol reaction between 2-bromopentanal pentanal  and a 2-methyl pentanal, the mechanism for the aldol addition product and the aldol condensation product is described .

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The complete question is

select the compound(s) can undergo an aldol addition reaction in the presence of aqueous sodium hydroxide? options: 1. ,2-bromopentanal pentanal option 2.  2-methyl pentanal option 3. 3-chloropentanal

Answer:

SO4²

Explanation:

Formula and structure: The sulfate ion formula is SO42- and the molar mass is 96.06 g mol-1. This salt is formed by one sulfate center to which 4 atoms of oxygen are attached, 2 of these atoms are forming S=O.

Answer:

\(so _{4} ^{2 - } \)

Explanation:

sulfate is consisting of sulfur element with 4 oxygen as the structure in the pic given and this group is 2- charged

Answer:

Born Again Raw Feeders

Answer:

[H⁺] = 5.754 x 10^-13 M

Explanation:

Since pH is the negative log of the hydronium concentration, we can solve for hydronium concentration and then plug in our given pH:

pH = -log[H⁺]

-pH = log[H⁺]

10^-pH = [H⁺]

Let's plug in our pH:

[H⁺] = 10^-pH = 10^-12.24 = 5.754 x 10^-13 M

A 20% solution can be made from 45g of NaCl by:

d. 225 mL

To determine how much of a 20% solution can be made from 45g of NaCl, we need to calculate the volume of the solution.

First, we need to understand that a 20% solution refers to 20 grams of NaCl dissolved in 100 milliliters of solution. This means that in every 100 mL of the solution, 20 grams of NaCl is present.

To find out the volume of the solution that can be made from 45g of NaCl, we can set up a proportion:

20 grams / 100 mL = 45 grams / X mL

Cross-multiplying the values, we get:

20 grams * X mL = 45 grams * 100 mL

Simplifying the equation:

20X = 4500

Dividing both sides by 20:

X = 4500 / 20

X = 225

Therefore, the volume of a 20% NaCl solution that can be made from 45g of NaCl is 225 mL.

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Answer:

The bonding and molecular polarity in a molecule of CI2 is best described as palar / polar

Answer:

number of plants that grow in the ocean

Explanation:

The dependent variable would be the number of plants that grow in the ocean.

The dependent variable is the actual variable being measured in an experiment. The value of dependent variables is directly affected by another variable in an experiment - the independent variable. The latter is the manipulatable variable that is directly inputted during experiments.

In the illustration, the main aim of the experiment is to determine how CO2 levels in ocean water affect the number of plants that can grow in the ocean. The manipulatable input variable would be the CO2 while the outcome variable - the dependent variable - would be the number of plants that grow in the ocean.

The amount (m) or mass in grams (g) of molybdenum is 30.58 grams.

The amount (m) in grams (g) of molybdenum is determined from the formula of heat change as follows:

Heat change  = mass * specific heat capacity * temperature change

The given values are as follows:

Substance: molybdenum (Mo)

heat transferred (q): 119150 J absorbed

specific heat capacity (c): 0.2772 J/(g-°C)

temperature change (ΔT): +1409.71 °C

Mass = heat change / (specific heat capacity * temperature change)

Mass = 119150 / (0.2772 * 1409.71)

Mass = 30.58 g

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Answer:

Temperature of gas C: 57

Height of column: 6.9

Temperature of gas K: 330

Volume of gas: 0.87

Answer:

The bigger the amplitude is, the louder and more intense the sound.

The mass of hydrogen in one mole of aluminum hydroxide Al(OH)₃ is 3.03 g (Option D)

From the formula of Al(OH)₃, 1 mole consist of

We can determine the mass of hydrogen as follow:

Mole = mass / molar mass

Cross multiply

Mass = mole × molar mass

Mass of H = 3 × 1.01

ass of H = 3.03 g

Thus, the mass of hydrogen in the compound is 3.03 g

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Answer: 3.03g

Explanation:

Answer:

Substance 4

Explanation:

Density is defined as mass per unit volume. A substance floats in another when its density is less than that of the substance on which it floats.

If an object is immersed in a denser liquid, it will sink

Since the density of water is 1 g/cm^3, any substance whose density is less than that of water will float in it.

If we look at the table, substance 4 has a density of 0.5g/cm^3. Hence, substance 4 is expected to float in water.

Judson's company used the strategy of international expansion to take advantage of the tax breaks offered by manufacturing facilities in Indonesia.

By moving its operations internationally, the company aims to benefit from the financial incentives provided by the Indonesian government to attract foreign businesses. International expansion involves establishing or expanding operations beyond the company's domestic market. In this case, Judson's company recognized the opportunity presented by the Indonesian government's tax breaks for international firms. By relocating its manufacturing facilities to Indonesia, the company can reduce its tax burden and potentially increase its profitability.

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