Why is the Ca(NO3)2 is added before AgNO3 in the anion scheme?




It does not mater which compound is added first.




If AgNO3 is added before Ca(NO3)2, both AgCl and Ag2SO4 can precipitate. In that case, we can not determine that the precipitate are due to chloride ion or sulfate ion.




Ca(NO3)2 is added before AgNO3 to determine cations present.




Ca(NO3)2 is added before AgNO3 to determine nonionic compounds

The major product of the hydration of 2‑methylprop‑1‑ene is found in the image attached to this answer.

One of the reactions that the alkenes undergo is the reaction that is called hydration. This has to do with the addition of the water molecule across the double bond of the alkene and this would lead to the production of an alcohol.

Recall that this addition occurs in such a way that the negative part of the addendum would be added to the carbon atom that has the least number of the hydrogen atoms thus the reaction is found to be regioselective.

Learn more about hydration of alkenes:https://brainly.com/question/8084181

#SPJ1

A balanced equation obeys the law of conservation of mass. Here the balanced equation for the decomposition of Barium sulfide is 8 BaS → 8Ba + S₈. The correct option is A.

A chemical equation in which the amount of reactants and products on both sides of the equation are equal is defined as the balanced equation. The number of atoms of each element of the reactants and products are same on either side of the equation.

Here the balanced equation for the decomposition of Barium sulfide is denoted as:

8BaS→ 8Ba + S₈

The number of 'Ba' and 'S' atoms on both sides of the equation are equal.

Thus the correct option is A.

To know more about balanced equation, visit;

https://brainly.com/question/29769009

#SPJ1

The answer is that electrons flow from the anode to the cathode in a voltaic cell. This movement of electrons creates an electric current that can be harnessed for various purposes.

A voltaic cell is a device that converts chemical energy into electrical energy through a redox reaction. The anode is where oxidation occurs, and it loses electrons to become oxidized. The cathode is where reduction occurs, and it gains electrons to become reduced. Electrons flow from the anode to the cathode because the cathode has a lower potential energy and is more likely to attract electrons.

As the electrons move from the anode to the cathode, they pass through an external circuit and generate an electric current. This current can be used to power devices or do work. However, the movement of electrons also creates an imbalance of charges in the cell. To maintain a neutral charge, ions must flow through a salt bridge or porous membrane to balance out the charges at each electrode.

In summary, electrons flow from the anode to the cathode in a voltaic cell as a product of the cathode reaction. This movement generates an electric current that can be used for various purposes. The ions in the cell must also flow through a salt bridge to maintain charge neutrality.

To know more about voltaic cell visit:

brainly.com/question/1370699

#SPJ11

The chemical has a percent composition of 56.35% oxygen and 43.65% phosphorus.

A substance has an oxygen content of 88.79% and a hydrogen content of 11.19%. Calculate this compound's empirical formula. Nonetheless, it's customary to employ the atom ratio with the smallest whole number. H 2 O is the compound's empirical formula as a result.

P mass of 30.98 g and O mass of 40.00 g add up to 70.98 g.

Phosphorus: \((30.98 g / 70.98 g) x 100% = 43.65%\)

\((40 g/70.98 g) x 100% = 56.35% for oxygen.\)

To know more about phosphorus visit:-

https://brainly.com/question/4622631

#SPJ1

Answer:

because the water/air needs to be pumped out.

Explanation:

hoped this helped! (just give it a 1 star if it didn't)

The power output of the circuit is the product of the voltage and current passing through the circuit. Hence the power of the speaker carrying a current of 6.4 A when connected to 120 V is 768 W.

Power is the rate of work done. Its unit is Watt. Power of a device is directly proportional to the current, voltage as well as to the resistance.

The expression relating the power, current and resistance is:

P = I² R

According to Ohm's law, V = I R

Thus, P = I V.

Given that, voltage V = 120 V

current I  = 6.4 A.

Thus power  P = 120 V × 6.4 A = 768 W.

Therefore, the power of the speaker carrying a current of 6.4 A when it is connected to 120 V source is 768 Watt.

To find more on power, refer here:

https://brainly.com/question/9338858

#SPJ1

Answer:

Water is a remarkable substance, and its unique properties are largely due to the presence of polar covalent bonds and hydrogen bonds in its structure. These characteristics play a crucial role in the physical and chemical properties of water, making it essential for life as we know it.

Explanation:

The polar covalent bonds in water arise from the unequal sharing of electrons between oxygen and hydrogen atoms. This results in the oxygen atom having a partial negative charge (δ-) and the hydrogen atoms having partial positive charges (δ+). These charges create polarity within the water molecule, leading to the formation of hydrogen bonds.

Hydrogen bonds occur when the partially positive hydrogen atom of one water molecule is attracted to the partially negative oxygen atom of another water molecule. These hydrogen bonds are relatively weak individually, but when present in large numbers, they contribute to the cohesion, surface tension, and high boiling point of water.

The importance of these bonds is manifold. The cohesion between water molecules due to hydrogen bonding enables water to form droplets, have a high surface tension, and flow freely, facilitating transport within organisms and in the environment. Additionally, hydrogen bonding leads to the high specific heat capacity and heat of vaporization of water, making it an effective regulator of temperature in living organisms and ensuring stable environmental conditions.

Furthermore, hydrogen bonds play a crucial role in the unique properties of water as a solvent. The polar nature of water allows it to dissolve a wide range of substances, including ionic compounds and polar molecules, facilitating various biological processes such as nutrient transport and chemical reactions in cells.

Answer: yes

Explanation: cuz i know lol

If we triple the temperature and double the volume, The new pressure of the system be 10atm.

The equation of state for a fictitious ideal gas is known as the ideal gas law. Although it has several drawbacks, it is a decent approximation of the behaviour of numerous gases under various circumstances. The formula for the ideal gas equation is

To find pressure we us ideal gas equation:

PV = nRT

Therefore, if we multiply Volume by 2 and Temperature by 3, we get.

hence, by adding.

Given that nR are constant throughout, P (2V)=nR(3T).

then would only consider variables

P = 3T/2V

So p = 1.5 T/V

It can alternatively be expressed as P/1.5=T/V.

Pressure would therefore drop by a factor of 1.5 division.

The new pressure of the system is 10atm.

learn more about ideal gas law Refer:brainly.com/question/12624936

#SPJ4

The molecular shape of BCl₃, as predicted by the VSEPR theory, is trigonal planar.

VSEPR theory (Valence Shell Electron Pair Repulsion) is used to determine the shape of molecules based on the repulsion between electron pairs in the valence shell.

Step-by-step explanation:
1. Identify the central atom, which is boron (B) in BCl₃.
2. Determine the number of electron groups surrounding the central atom. In BCl₃, there are 3 electron groups, one for each chlorine (Cl) atom bonded to the boron.
3. Identify the number of lone pairs on the central atom. Boron has no lone pairs in BCl₃
4. Apply the VSEPR theory to predict the shape. With 3 electron groups and no lone pairs, the molecular shape is trigonal planar.

So, the molecular shape of BCl₃ as predicted by the VSEPR theory is trigonal planar.

To learn more about VSEPR theory https://brainly.com/question/14225705

#SPJ11

Option(A) and option(B) are the options that are correctly describe the electronic configuration 1s²2s²2p⁴, that is oxygen and N⁻ atoms.

In a modern periodic table which is organized by increasing atomic number. The atomic number is refer as the number of electrons present in the ground state of atom. Thus, the electronic configuration can be used to identify the atoms or ions. The electronic configuration is used to describe the distribution of electrons in different energy level around the nucleus. We have an electronic configuration is written as 1s²2s²2p⁴.

Hence, required answer are option(A) and (B).

For more information about electronic configuration, visit:

https://brainly.com/question/21977349

#SPJ4

Complete question:

Select all the options that correctly describe the electron configuration 1s^2 2s^2 2p^4

A) Oxygen

B) \(N^{ -}\)

C) \(O^{2 -}\)

The key intermediate containing a chiral center of the alanine racemase catalyzed reaction can be represented as a structure containing the alpha-carbon of the alanine bound to the PLP moiety.

The conversion of L-alanine to D-alanine catalyzed by alanine racemase is an essential biological process as D-alanine is an important constituent of bacterial cell walls. Alanine racemase catalyzes the interconversion of the two stereoisomers of alanine and is also known to be a member of the pyridoxal phosphate (PLP) dependent enzyme family. In the process of catalyzing the reaction, the enzyme uses the coenzyme pyridoxal phosphate (PLP), which acts as an electrophile and an electron sink. PLP acts as an electrophile by forming a Schiff base with the alpha-amino group of L-alanine, which is followed by proton abstraction from the alpha-carbon to generate a carbanion that is stabilized by PLP. The carbanion intermediate is then report at the opposite face to give D-alanine.

Therefore, PLP is a crucial co-factor that is required for the function of alanine racemase, as it provides the key intermediate containing a chiral center that is essential for the conversion of L-alanine to D-alanine. The key intermediate can be represented as a structure containing the alpha-carbon of the alanine bound to the PLP moiety, which plays an important role in stabilizing the carbanion intermediate formed during the reaction.

To know more about catalyzed reaction visit:

https://brainly.com/question/30868197

#SPJ11

A single molecule of TiO2 (titanium dioxide) contains one titanium (Ti) atom and two oxygen (O2) atoms. However, it does not contain any O2 molecules, as O2 molecules consist of two oxygen atoms bonded together. In TiO2, the oxygen atoms are bonded to the titanium atom instead.

Titanium dioxide (TiO2) is a compound consisting of one titanium atom (Ti) and two oxygen atoms (O). Therefore, if you have one molecule of TiO2, it contains two molecules of O2.In TiO2, the titanium atom is bonded to two oxygen atoms through covalent bonds. Each oxygen atom contributes two electrons to form the covalent bonds with the titanium atom. This results in a stable structure with two oxygen atoms for each molecule of TiO2.

To break down the molecular composition further, the two oxygen atoms in TiO2 are not free O2 molecules. Instead, they are part of the chemical structure of TiO2 and are bonded to the titanium atom. The representation "O2" refers to two oxygen atoms bonded together, such as in the case of molecular oxygen (O2) gas.

In summary, one molecule of TiO2 contains two oxygen atoms. However, it's important to note that these oxygen atoms are not present as separate O2 molecules but are chemically bonded within the TiO2 compound.

To know more about molecules visit:

https://brainly.com/question/28931982

#SPJ11

Answer:

Robot 1 : 150 J

Robot 2: 40 J

Explanation:

30 N x 5m = 150 J

20 N x 2m = 40 J

Please mark as brainliest

Have a great day, be safe and healthy  

Thank u  

XD

Answer:

2+2H2O.We already learn it

Answer:

H202(aq)+2Fe2+(aq)+2H+=>2fe3+(aq)+2H20(l)

Explanation:

H202(aq)+2Fe2+(aq)+2H+=>2fe3+(aq)+2H20(l)

Answer:

the answer on the second part is c ((6 mol)(-393.5kJ/mol)+(6 mol)(-285.83 kJ/mol))-(-1,273.02 kJ/mol)

The sum of  enthalpy change of products will be equal to the sum of enthalpy change of reactants. Here, the change in enthalpy of formation of oxygen is equal to -467.16 kJ/mol.

What is formation enthalpy?

Enthalpy of fusion is the heat energy absorbed or released during the fusion of two reactants to form the products. The total heat energy in a system be a constant.

The formation enthalpies of both reactants and products are given here. The reaction and the enthalpy changes can be written as follows:

\(\rm 6CO_{2} + 6H_{2}O \rightarrow C_{6}H_{12}O_{6} + 6O_{2}\)

The number of moles must be multiplied with the enthalpies given then we can write it as:

(-1273.02 + 6 × ΔHf O₂)  =  6 (-393.5 + -285.83)kJ/mol

                                        = -4075.98 KJ/mol

                        ΔHf (O₂)  =    (-4075.98 - (-1273.02)) /6

                                        = -467.16 kJ/mol.

Hence, the enthalpy change of formation of oxygen in this reaction is -467.16 kJ/mol.

To find more about formation enthalpy, refer the link;

https://brainly.com/question/14563374

#SPJ5

Answer:

A) NaOH

got it right on the test.

Explanation:

Answer:

NaOH  

Explanation:

Answer:

In a saturated solution of potassium nitrate (KNO3), the rate of dissolution and the rate of recrystallization are equal. This equilibrium state is reached when the amount of KNO3 that dissolves equals the amount that recrystallizes from the solution.

The equilibrium can be influenced by various factors such as temperature and pressure. For example, if you increase the temperature of the solution, the solubility of potassium nitrate increases, meaning that more KNO3 can dissolve before reaching saturation. This would momentarily increase the rate of dissolution until a new equilibrium is reached where the rates of dissolution and recrystallization are equal again, but at a higher concentration of KNO3.

To summarize, in a saturated solution of KNO3, the rate of dissolving KNO3 is equal to the rate of recrystallization of KNO3. This is a characteristic of dynamic equilibrium in solutions.

The malady affecting Tank 104, characterized by volatile aromas, a brownish color, and a flat, dull taste, is likely a result of microbial spoilage known as acetic acid bacteria (AAB) infection or acetobacter infection.

The significant increase in acetic acid concentration from 0.65 g/L to 2.73 g/L suggests the presence of acetic acid bacteria, which metabolize ethanol into acetic acid during the fermentation process. This bacterial infection leads to the production of acetic acid, causing the wine to have a vinegary or sharp taste and volatile aromas.

The increase in lactic acid concentration from 0.75 g/L to 3.40 g/L indicates the activity of lactic acid bacteria, which can also contribute to wine spoilage. These bacteria convert malic acid into lactic acid, resulting in changes in acidity and flavor.

The increase in pH from 3.70 to 4.10 and the significant drop in tartaric acid from 2.7 g/L to 0.06 g/L further support the presence of bacterial activity, as these changes are consistent with microbial metabolism.

In this case, the prolonged exposure to elevated temperatures due to the power outage created favorable conditions for the growth and activity of acetic acid bacteria and lactic acid bacteria.

learn more about metabolize here:

https://brainly.com/question/31384460

#SPJ11

Answer:

\(V_{base}=6.0mL\)

Explanation:

Hello there!

In this case, by considering that the reaction between sodium hydroxide and hydrochloric acid is in a 1:1 mole ratio of these two reactants, we are able to use the following equation relating the concentration and volume of each one:

\(M_{acid}V_{acid}=M_{base}V_{base}\)

In such a way, by solving for the volume of the base, we will obtain:

\(V_{base}=\frac{M_{acid}V_{acid}}{M_{base}} \\\\V_{base}=\frac{0.5M*24mL}{2.0M}\\\\V_{base}=6.0mL\)

Regards!

Answer:

Explanation:

I'm sorry, but I disagree with the statement because the direction of the breeze is not solely determined by the difference in temperature between the land and sea. The direction of the breeze is influenced by a variety of factors such as the pressure system, the prevailing wind patterns and the shape of the land. During the daytime, sea breeze is a common phenomenon, which is caused by the land heating up faster than the ocean, and as the hot air rises, it creates a low-pressure system over the land, drawing in cooler air from the ocean. So, the breeze can blow from the land or sea during the daytime, it's not always blowing from the land.

Answer:

The chemistry of iron is dominated by the +2 and +3 oxidation states i.e. iron(II) and iron(III) complexes e.g. Fe2+ and Fe3+ complex ions with selected ligands, usually of an octahedral shape, a few tetrahedral iron(III) complexes are mentioned too. The reactions of the aqueous ions iron(II) and iron(III) with ammonia, sodium hydroxide and sodium carbonate are described and explained as are complexes of iron(III) with the chloride ion and cyanide ion.

principal oxidation states of iron, redox reactions of iron, ligand substitution displacement reactions of iron, balanced equations of iron chemistry, formula of iron complex ions, shapes colours of iron complexes, formula of compoundsExplanation:

According to the presentation, cattle are typically sent to a processing facility when they have reached the desired age and weight for slaughter and are ready for meat production.

Cattle are sent to a processing facility at a specific stage in their growth and development. The timing varies depending on factors such as breed, intended market, and production goals. Generally, cattle are raised until they reach a certain age and weight that is suitable for meat production. This ensures that the animals have developed enough muscle mass and have accumulated sufficient fat to produce high-quality meat. Once the cattle have reached the desired criteria, they are transported to a processing facility.

At the processing facility, the cattle undergo a series of steps to convert them into meat products for human consumption. These steps typically include stunning the animals to ensure a humane slaughter, bleeding them to drain the blood, skinning or dehairing, eviscerating, and dividing the carcasses into primal cuts. The meat is then further processed and packaged according to market demand. The entire process is carefully regulated to ensure food safety and quality standards are met.

To learn more about meat production refer:

https://brainly.com/question/10602979

#SPJ11

2.589 x 10^6 / 3.687 x 10^5 = 7.011154684 x 10^-2

You first need to know which formula you are going to use. Since we are given the pressure and volume, this tells us that we will be using Boyle's Law.

You then have to list what you are given and what they are asking for.

\(P_{1} = 715 kPa\\ V_{1} = 15.7 L\\ P_{2} = ? \\ V_{2} = 6 L\)

You then need to use the formula to find your missing value.

\(P_{1} V_{1} = P_{2}V_{2}\\\\ P_{2} = \frac{P_{1}V_{1}}{V_{2}} \\\\ P_{2} = \frac{(715 kPa)(15.7 L)}{(6 L)} \\\\ P_{2}} = 1870.916667\\\\\)

P₂ = 2 x 10³ kPa

Sigdigs(figs) wise, the answer will have one significant digit since the 6L has the least digits.

You can also prove this by knowing the relationship between the values. Pressure and volume has an inverse relationship so it makes sense that the new pressure is a lot higher than the original pressure since our new volume got smaller.

//

Regarding the last question, I have no clue.

\(▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪\)

1. The equation representing the equation is ~

\( \mathrm{Na + Cl\rightarrow NaCl}\)

The given reaction is a redox reaction because there's a transfer of electron from Sodium (Na) to chlorine (Cl)

where sodium is oxidized (due to loss of electron) and chlorine get reduced (due to gain of electron).

2. Sodium is a highly reactive element which belongs to the 1st group of periodic table, hence it can catch fire if it is kept free in atmosphere. so in order to prevent that it is stored in kerosene oil, which doesn't let Sodium come in contact with air .

Answer:

Explanation:

The percentage error of a certain measurement can be found by using the formula

\(P(\%) = \frac{error}{actual \: \: number} \times 100\% \\ \)

From the question we have

actual number = 0.95 g/mL

error = 0.95 - 0.56 = 0.39

We have

\(p(\%) = \frac{0.39}{0.95} \times 100 \\ = 41.0526315...\)

We have the final answer as

Hope this helps you