Is Li and Cl likely to form ionic compounds?

Solvent a gives RF values for the two unknown dyes of 0.28 and 0.67. solvent b gives RF values for the same two unknown dyes of 0.31 and 0.83. based on this, we would choose Solvent (A) because it shows a larger separation of dyes.

Rf values are always between 0 and 1, with 1 being the other extreme where the solute is so soluble that it moves as far as the solvent because the solvent front is always larger than the distance traveled by the solute. Since RF values are a ratio of distances, they lack units.

Therefore, the identification is more succinct the more diverse solvents (or mixes) are utilized, the more RF values are produced. The process of identification involves comparing the unknown sample's RF values to those of several known dyes.

Learn more about RF values here:-

https://brainly.com/question/26639192

#SPJ4

Running a blank solution is crucial in spectrophotometry experiments to establish the zero %T and account for background absorbance. Without running a blank, the results can be affected by systematic errors.

It is important to run a blank solution to set the zero %T in both Parts 1 and 2 of the experiment because it helps to account for any background absorbance or interference from the solvent or other components in the sample. Running a blank solution allows us to establish a baseline measurement of the solvent or the solution without the analyte, which helps in accurately measuring the absorbance caused by the analyte of interest.

If a blank solution is not run, the results can be affected in several ways:

Systematic Error: The absence of a blank solution can introduce a systematic error, causing a constant offset in the measured absorbance values. This offset can lead to incorrect calculations and interpretations.

Overestimation or Underestimation: Without running a blank, the measured absorbance may include contributions from the solvent or other interfering substances. This can lead to overestimation or underestimation of the analyte concentration, affecting the accuracy of the results.

Distorted Beer's Law Plot: In the absence of a blank, the plot obtained may not accurately represent the linear relationship between concentration and absorbance according to Beer's Law. This can lead to incorrect calculations of the slope (molar absorptivity) and affect the accuracy of future concentration determinations.

In spectrophotometry, the blank solution serves as a reference for setting the zero %T (transmittance) or absorbance value. By measuring the blank, we can account for any absorbance caused by the solvent, impurities, or other components in the sample. The blank solution typically contains all the components except the analyte of interest. It is measured under the same conditions as the sample solutions.

The blank measurement allows us to subtract any background absorbance from the sample measurements, providing a more accurate representation of the absorbance caused solely by the analyte. This helps in obtaining reliable and precise measurements for concentration determination using Beer's Law.

Running a blank solution is crucial in spectrophotometry experiments to establish the zero %T and account for background absorbance. Without running a blank, the results can be affected by systematic errors, inaccurate concentration determinations, and distorted Beer's Law plots. It is important to always include a blank solution to ensure accurate and reliable measurements.

To know more about spectrophotometry , visit:

https://brainly.com/question/24864511

#SPJ11

The evidence from the passage supports this conclusion are:

(1) A "Some of the cacti that manage to grow in the Atacama get water not from rainfall or groundwater... but from the fog that comes in off the Pacific Ocean!"

Some desert regions are so dry and devoid of precipitation that neither plants nor animals can live. However, fog from the coast provides adequate moisture on some little hills or formations known as lomas for seasonal vegetation and a few animal species.

There are little, torn plants with deep roots throughout the environment. Long roots enable them to absorb moisture from the Earth's subsurface layers. Aqueous tissue is found in fleshy leaves, which aids in moisture retention. Cacti are not widespread in Atacama, in contrast to other arid areas.

Therefore, these work show that vegetation in the Atacama Desert is able to withstand extreme temperatures, both above and below ground, intense solar radiation during the day, and chilling to freezing temperatures during the night, especially at higher altitudes and as such cacti  survive because of fog.

Learn more about Atacama from

https://brainly.com/question/1420959
#SPJ1

See full question below

Animals and plants that live in the Atacama must have different behaviors and features than plants and animals in less extreme environments. What evidence from the passage supports this conclusion? (1) A "Some of the cacti that manage to grow in the Atacama get water not from rainfall or groundwater... but from the fog that comes in off the Pacific Ocean!" B "The soil in parts of the Atacama Desert has even been compared to the land on the planet Mars. Many movies and TV shows set in outer space have been filmed there." (1) С "Some scientists are even experimenting with growing crops in the Atacama... to see if it would be possible to grow them on Mars!" (J) D) "In July 2011, an arctic front came through the Atacama and brought snow to the desert!" (1)​

Answer:

Bases Do not Change the Color of Blue Litmus.

I'd go with Option C.

Sodium Hydroxide.

When solutions of NaCl and AgNO3 are mixed a. A precipitate should form.

When solutions of NaCl and AgNO3 are mixed precipitation reaction Occurs, resulting in the formation of a solid silver chloride (AgCl) Precipitate. This is because silver chloride is insoluble in water and will Precipitate out of solution. The balanced equation for the reaction is:

NaCl(aq) + AgNO3(aq) → AgCl(s) + NaNO3(aq)

Therefore, When NaCl and AgNO3 solutions are mixed, a white precipitate of silver chloride formed.

To learn more about Precipitation reaction

https://brainly.com/question/29762381

#SPJ4

Answer:

Na^+

Explanation:

The symbol for sodium is Na.  The term "sodium ion" assumes that the reader knows that sodium's single 3s electron is susceptible to theft by any nearby element that has a high electron affinity.  Sodium's ionization energy is low, allowing the 3s electron to move elsewhere and leave behinf a positively charged Na^+ atom.

Acetylene gas (C2H2) is produced as a result of the reaction CaC2(s) + 2 H2O(ℓ) → C2H2(g) + Ca(OH)2(aq). If 37 g of CaC2 are consumed in this reaction, 1.1 moles of water needed.

The term mole is defined as the amount of substance of a system which contains as many elementary entities.

1 mole is equal to 6.023 × 10 ²³ molecules.

Given:

mass of CaC₂ = 37 g

mass of water = ?

The balanced reaction is as follows:

CaC₂  +   2H₂O   ⇒   C₂H₂   +   Ca(OH)₂

2. Convert mass of CaC₂ to moles

molecular mass CaC₂ = 40 + (2 x 12)

= 40 + 24  

= 64 g

64 g of CaC₂ = 1 mol

37 g = x

x = (37 x 1) / 64

x = 37/64

x = 0.57 moles of CaC₂                          

3. Calculate the moles of water

                 1 mol of CaC₂ ----------------- 2 moles of water

                 0.57moles of CaC₂ --------- x

                  x = (0.57 x 2) / 1

                  x = 1.1 moles of water        

Thus, If 37 g of CaC2 are consumed in this reaction, 1.1 moles of water required.

To learn more about the mole, follow the link;

https://brainly.com/question/26416088

#SPJ1

Answer: 2(g)+3H2(g)→2NH3(g)

2

(

g

)

+

3

H

2

(

g

)

2

N

H

3

(

g

)

sorry lag

Answer:

2 moles of sugar in 1,000g of water

Answer:

The definition of atom: The Atom is the basic unit of matter.

Types of atoms: There are 3 types of atoms, protons, neutrons, and electrons.

Answer: C

Explanation:

The amine that will react with cyclopentanone to form an enamine is CH3CH2CH2CH2NH2. This is a primary amine, which is required for enamine formation.

Enamine formation is a reaction between a primary amine and a carbonyl compound (such as cyclopentanone).

During this reaction, the nitrogen atom of the amine attacks the carbonyl carbon of the carbonyl compound, leading to the formation of an imine intermediate. This intermediate can undergo tautomerization to form the final enamine product.

In order for this reaction to occur, a primary amine is required, as it has a more reactive nitrogen atom compared to secondary or tertiary amines. CH3CH2CH2CH2NH2 is a primary amine, as it has only one carbon atom attached to the nitrogen atom.

Therefore, it is the correct choice for reacting with cyclopentanone to form an enamine.

To learn more about carbonyl compound, refer below:

https://brainly.com/question/30850679

#SPJ11

Answer:

Add copper (II) oxide (insoluble base), a little at a time to the warm dilute sulfuric acid and stir until the copper (II) oxide is in excess (stops disappearing) Filter the mixture into an evaporating basin to remove the excess copper (II) oxide. Leave the filtrate in a warm place to dry and crystallize.

The three main steps involved in producing crystals of the salt copper sulfate is listed below.

Soluble salts can be made by reacting acids with soluble or insoluble reactants.

Titration method is used if the reactants are soluble

Insoluble salts are made by precipitation reactions.

For producing crystals of the salt Copper Sulfate from copper oxide following three steps needs to be done ,

1. Copper oxide is added continuously with a spatula to the Water Bath heated  Sulfuric Acid , until it gets in excess.

2. The mixture is filtered to remove extra Copper Oxide, and then pour the filtrate (Copper sulfate solution) into an evaporating basin , where it is heated to evaporate half of the water .

3. The solution is poured into a watch glass so that all the water evaporates.

Hence we are left with blue and regularly shaped Hydrated copper sulfate crystals .

To know more about Soluble Salts

https://brainly.com/question/15074188

#SPJ2

Answer:

The law of conservation of matter

Explanation:

Your Welcome!!

Stay Positive!

Have a Great Day!

Answer:

The addition of hydronium ion increases the solubility of the salt

Explanation:

When a weak acid, MA dissociates in an aqueous solution, the following products in equilibrium are obtained;

MA ----> M+ + A-

The anion which is a conjugate base will be removed from the solution with the addition of a hydronium ion from an acid: 2H3O+ + 2A- ----> 2HA + 2H20

This distorts the reaction equilibrium. According to Le Chatelier’s principle, more MA will dissolve until in order to restore the previous equilibrium of the reaction.

Therefore, an acidic pH increases the solubility of almost all sparingly soluble salts whose anion is the conjugate base of a weak acid.

Answer:2.14 moles

Explanation:

n=PV/RT

n=(3.2×16.2)÷(0.0821×(22+273.15)

n= 2.14 moles2

Learning about the different types of waves is important for several reasons:

A wave is an irregularity or variation that gradually transfers energy from one point to another in a medium. It can be an elastic deformation or a change in pressure, electric or magnetic strength, electric potential, or temperature.

The types of waves are electromagnetic waves and mechanical waves.

Learn more about types of waves at: https://brainly.com/question/30716652

#SPJ1

Considering the definition of empirical and molecular formula, the empirical formula is C₃H₅O₂ and the molecular formula is C₆H₁₀O₄.

The empirical formula or minimal formula is one that indicates the type of atoms that make up a compound, the minimum ratio of the integer number of atoms and not necessarily the exact number of atoms in it.

The molecular formula is the actual formula of the molecule and indicates the types of atoms and the number of each type involved in the formation of the molecule.

This formula can be obtained from the empirical or minimal formula, as long as the molecular mass of the compound is known. That is, divide the estimated molecular mass divided by the molecular mass of the empirical form. With the multiple obtained, we proceed to multiply the subscripts of the empirical formula, thus obtaining the molecular formula of the compound.

In this case, you know:

Assuming a 100 grams sample, the percentages match the grams in the sample. So you have:

Then it is possible to calculate the number of moles of each atom in the molecule, taking into account the corresponding molar mass:

The empirical formula must be expressed using whole number relationships, for this the numbers of moles are divided by the smallest result of those obtained. In this case:

The empirical formula must be expressed using whole number relationships, so:

Therefore the C: H: O mole ratio is 3: 5: 2

Finally, the empirical formula is C₃H₅O₂.

The molar mass of adipic acid is 146.1 g/mol and the molar mass of empirical formula is 69 g/mole.

Dividing the estimated molecular mass divided by the molecular mass of the empirical form, you get:

146.1 g/mol÷ 69 g/mol ≅ 2

This means that in the molecular formula there are 2 unit formulas, so it is necessary to multiply the number of all atoms by 2:

Molecular formula= 2×C₃H₅O₂

Molecular formula= C₆H₁₀O₄

The molecular formula is C₆H₁₀O₄.

Learn more about empirical and molecular formula:

brainly.com/question/26388921

brainly.com/question/14853529

brainly.com/question/13058832

#SPJ1

As a result, the solution's final concentration is 1.86 M.

The first step is to determine the original solution's concentration. We can use the following formula:

M1V1 = M2V2

where M1 represents the initial concentration, V1 represents the initial volume, M2 represents the final concentration, and V2 represents the final volume.

A 69.0 ml portion of a 1.60 M solution has been diluted to a total volume of 218 ml. Using the above formula, we can calculate the initial concentration:

M1 = (M2V2)/V1 = (5.06 M)(218 ml)/(69.0 ml)

As a result, the solution's initial concentration is 5.06 M.

Following that, we are told that a 109 ml portion of that solution is diluted with 187 ml of water. We can use the following formula:

M1V1 = M2V2

where M1 represents the initial concentration (5.06 M), V1 represents the initial volume (109 ml), M2 represents the final concentration (what we're looking for), and V2 represents the final volume (109 ml + 187 ml = 296 ml).

When we solve for M2, we get:

M2 = (M1V1)/V2 = (5.06 M)/(296 ml) = 1.86 M

To Know more about Concentration Visit:

brainly.com/question/10725862

#SPJ1

An endothermic reaction is one that absorbs heat from its surroundings, resulting in an increase in the system's internal energy.

Therefore, the enthalpy change associated with an endothermic reaction is positive. The energy required to break the bonds in the reactants is greater than the energy released when new bonds are formed in the products, resulting in a net absorption of energy.

The enthalpy change is a measure of the heat energy released or absorbed during a chemical reaction, and it is often used to determine whether a reaction is exothermic or endothermic.

In the case of an endothermic reaction, the products have more internal energy than the reactants, and the enthalpy change is positive.

Some examples of endothermic reactions include melting ice, evaporating water, and photosynthesis. In all of these reactions, heat is absorbed from the surroundings, resulting in a positive enthalpy change.

Understanding the enthalpy change associated with a reaction is important in fields such as thermodynamics, chemical engineering, and materials science.

To know more about endothermic reaction refer to-

https://brainly.com/question/23184814

#SPJ11

Answer:

\(\boxed {\boxed {\sf 10.3 \ moles \ of \ ammonia}}\)

Explanation:

To convert from molecules to moles, we must Avogadro's Number.

This number is how many particles (atoms, molecules, ions, etc.) in 1 mole of a substance. In this case, it is molecules of ammonia in 1 mole of ammonia.

\(6.022*10^{23} \ molecules \ NH_3 / mol \ NH_3\)

Use Avogadro's number as a ratio.

\(\frac{6.022*10^{23} \ molecules \ NH_3}{1 \ mol \ NH_3}}\)

Multiply by the given number of ammonia molecules (6.21*10²⁴)

\(6.21*10^{24} \ molecules \ NH_3 *\frac{6.022*10^{23} \ molecules \ NH_3}{1 \ mol \ NH_3}}\)

Flip the fraction so the molecules of ammonia can cancel out.

\(6.21*10^{24} \ molecules \ NH_3 *\frac{1 \ mol \ NH_3}{ 6.022*10^{23} \ molecules \ NH_3}}\)

\(6.21*10^{24}*\frac{1 \ mol \ NH_3}{ 6.022*10^{23}}\)

Multiply to make 1 fraction.

\(\frac{6.21*10^{24} \ mol \ NH_3}{ 6.022*10^{23}}\)

Divide.

\(10.31218864 \ mol \ NH_3\)

The original measurement of molecules had 3 significant figures (6,2 and 1). Therefore we must round our answer to 3 sig figs.

For the answer we found, 3 sig figs is the tenth place. The 1 in the hundredth place tells us to leave the 3 in the tenth place.

\(10.3 \ mol \ NH_3\)

There are about 10.3 moles of ammonia in 6.21*10²⁴ molecules.

Answer:

Zinc Carbonate

Zinc Nitrate

Explanation:

Answer:

Gas, Solid, or liquid

Explanation:

answer: a filter funnel is used to separate solids from liquid through a cone shaped filter placed inside the funnel.

You will use a filter funnel in this experiment to

Answer:

Separate cabbage from liquid

Answer:

im 14 years old.

Explanation:

The mass in grams of the helium, He gas that can be dissolved in 400 mL of water is 2.46×10⁻³ grams

First, we shall obtain the molar solubility of the solution. Details below:

S = Kₕ × P

= 3.7×10⁻⁴ × 4.15

= 1.54×10⁻³ M

Next, we shall determine the mole of He in solution. Details below:

Mole of He = molarity × volume

= 1.54×10⁻³ × 0.4

= 6.16×10⁻⁴ mole

Finally, we shall determine the mass of He in the solution. Details below:

Mass of He = Mole × molar mass

= 6.16×10⁻⁴ × 4

= 2.46×10⁻³ grams

Thus, the mass of He gas is 2.46×10⁻³ grams

Learn more about mass:

https://brainly.com/question/23729674

#SPJ4

The frequency is 7.5 x 10¹⁴ Hz and the energy is 4.97 x 10⁻¹⁹ J of blue light that has a wavelength of 400 nm.

The length of the a wave is expressed by its wavelength. The wavelength is the distance between one wave's crest and the following wave's crest. The wavelength can also be determined by measuring from of the "trough" (bottom) with one waveform to the "trough" of the following wave.

v = c/λ

v = 3.0 x 10⁸/4.0 x 10⁻⁷

v = 7.5 x 10¹⁴ Hz

400 nm = 4.0 x 10⁻⁷

E = hv

E = (6.63 x 10⁻³⁴)(7.5 x 10¹⁴)

E = 4.97 x 10⁻¹⁹ J

To know more about wavelength visit:

https://brainly.com/question/12924624

#SPJ4

The number of moles of Benzyl alcohol is 0.115 moles.

Number of moles can be also told in terms of Avogadro's number with is 6.023 × \(10^{23}\). It can be calculated for atoms, molecules, ions or others as well. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance. The concept of the mole helps to put quantitative information about what happens in a chemical equation on a macroscopic level. So it is used widely.

Molecular mass is nothing but the sum of atomic mass of all the element present in the molecule. In the above given question we have to calculate the number of moles of the molecule by using the given weight. To do so we use the below formula;

Number of moles = given weight

                               Molecular mass

⇒ 12.50  = 0.115 moles

   108.14

Therefore the number of moles in 12.50 g of benzene C2H5OH is 0.115 moles

To know more about number of moles

https://brainly.com/question/105061

#SPJ1

Many scientists are dependent on the government for funding for many reasons. One of the main reasons is that research is often too expensive to carry out without the help of the government. Option b)

The government plays a major role in scientific research, especially in areas of national interest. Government research funding plays an important role in promoting scientific inquiry and advancing knowledge of the natural world. The government is in charge of allocating research funds to public and private organizations. For scientists who want to carry out their research, it can be challenging to find funding from other sources, such as private companies.

As a result, the majority of researchers rely on government grants to finance their work. This dependence on government funding has advantages and disadvantages . One of the advantages is that it ensures that scientific research is carried out in areas that are of national interest. By prioritizing funding for specific areas, the government can direct research toward those issues that are considered important to the country. Another advantage is that it can lead to more innovation. Government grants often provide funding for research that might not be carried out otherwise, such as new technologies or techniques. This can result in breakthroughs that lead to new products, services, or ideas.However, there are also some disadvantages to being dependent on government funding. One of the main drawbacks is that it can lead to a lack of independence. Researchers who rely on government grants may feel obligated to focus on areas that the government deems important, rather than pursuing their own interests or those that are considered unconventional. Another disadvantage is that government funding can be unpredictable. Grants are usually awarded for a limited period of time and may be subject to budget cuts or changes in priorities. As a result, scientists may have to constantly seek new sources of funding or may be forced to abandon their research projects. Hence option b) is correct.

for such more questions on research

https://brainly.com/question/2988619

#SPJ8