What is the limiting reactant?
3. 0.20mol AsCl, react with 0.25mol H.O

Answer:

law of conservation of mass

Explanation:

The law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products.

Answer:

C ; strayed

Explanation:

I took the k-12 quiz.

Answer:

C

Explanation:

I TOOK THE TEST

Answer:

The main difference between trans fat and saturated fat is that trans fat raises low-density lipoprotein (LDL) levels and drops high-density lipoprotein (HDL) levels in the blood whereas saturated fat raises both LDL and HDL levels in the blood.

Explanation:

Stay safe fam :)

Answer:

1. [tex]2.879 * 10^{23}[/tex] atoms of AgCl

2. [tex]1.96 * 10^{7}[/tex] g of Bi

3. [tex]C_2H_8O[/tex]

Bonus: [tex]8.31*10^{23}atomsC[/tex]

Explanation:

1) If there are 68.54 grams of silver chloride, first know the chemical formula of silver chloride is AgCl. Then, you can use the molar mass of AgCl, found by adding the molar mass of its constituent elements on the periodic table, and unit conversions to solve for the amount of atoms of AgCl. Keep in mind that Avogadro's number states that there are [tex]6.02 * 10^{23}[/tex] atoms in one mole of a substance. Keep in mind that your answer will have four significant figures.

[tex]68.54 grams AgCl* \frac{1 mol AgCl}{(107.87gAg + 35.45gCl)} *\frac{6.02*10^{23}atoms}{1 mol} = 2.879 atomsAgCl[/tex]

2) If there are [tex]5.64 * 10^{28}[/tex] atoms of bismuth, you can use the molar mass of Bi found on your periodic table and constants in order to calculate the mass of Bi.

[tex]5.64*10^{28}atoms Bi * \frac{1 mol Bi}{6.02 * 10^{23}atoms Bi} * \frac{208.98gBi}{1 molBi} = 1.96 * 10^7gBi[/tex]

4) When asked for the empirical formula, recall that the empirical formula of a compound differs from its chemical formula, as the empirical formula is essentially the "greatest common factor" version of a chemical formula. For example, glucose, [tex]C_{6} H_{12}O_{6}[/tex], and acetic acid, [tex]CH_3COOH[/tex] (or [tex]C_2H_4O_2[/tex]) have different chemical formulas, but their empirical formulas are the same, represented as [tex]CH_2O[/tex], where the greatest common factor 6 is factored out of glucose to obtain this formula, while the greatest common factor 2 is factored out of acetic acid.

Given this information, you can imagine that there are 100g of carbon, hydrogen, and oxygen in this compound, so that the percentages given are easy to convert into mass. (Note that since empirical formula is a simplified form, the molar mass of the compound won't matter). This gives us a compound with 50.0g of carbon, 33.3g of oxygen, and 16.7g of hydrogen. We can then convert those values into moles:

[tex]50.0gC * \frac{1molC}{12.01gC} = 4.16molC\\33.3gO * \frac{1molO}{16.00gO} = 2.08molO\\16.7gH * \frac{1 mol H}{1.01gH} = 16.5molH[/tex]

Now, you can express a formula for this compound as [tex]C_{4.16}H_{16.5}O_{2.08}[/tex].

The lowest of these numbers is 2.08, or the number of moles of O in the formula. Dividing each of the subscripts by 2.08 will result in the following formula:

[tex]C_{4.16/2.08}H_{16.5/2.08}O_{2.08/2.08} = C_2H_8O[/tex]

Note: Depending on if 1.00g/mol or 1.01g/mol was used for the molar mass of hydrogen, either 7.93 or 8.03 would be found to be the subscript of H. This is simply factored out by rounding either value to simply 8.

Bonus) Knowing that there are 25.6g of the substance in question, we can simply find 64.9% (the percent composition by mass of carbon for the unkown compound) of the total mass of the unknown compound.

[tex]25.6g * 0.649 = 16.6gC[/tex]

Now, simply use the molar mass of carbon, 12.01g/mol, to find the moles of carbon present.

[tex]16.6gC * \frac{1molC}{12.01gC} = 1.38molC[/tex]

Now, using Avogadro's number, convert from moles to atoms. Keep in mind that your answer will have three significant figures.

[tex]1.38molC * \frac{6.02*10^{23}atomsC}{1molC} = 8.31*10^{23}atomsC[/tex]

The model of the solar system by the student would contain an error if he did not use different ball sizes which are in proportion to the size of each planet.

The solar system is the system of the Sun and it's nine planets.

The Sun is the main star and source of energy in the solar system.

The planets in the solar system are of different sizes and orbit at various distances around the Sun.

This a student modelling the solar system should use different ball sizes in proportion to the size of each planet.

Therefore, the model of the student would contain an error if he did not use different ball sizes which are in proportion to the size of each planet.

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Answer:

Solvation is affected by inter molecular forces in a sense that these attractive forces overcome the forces that holds the solute and solvent particles together making the solute particles separate form the solvent particles.

Explanation:

hope this helps

there is no answer to your question because all of the options ARE blood types so there is no telling.

Answer:

3.24

Explanation:

It is known that nitric acid is a strong acid, so it will dissociate completely, resulting in [tex]H^+[/tex] and [tex]NO_3^-[/tex] ions being present in solution. We also know that pure water has a neutral pH due to the chemical equilibrium of [tex]H_2O(l)[/tex] ⇄ [tex]H^+(aq) + OH^-(aq)[/tex] signifying equal parts of hydrogen and hydroxide ions.

Now, we must convert from 4.5 moles of nitric acid to moles of hydrogen. This can be accomplished using unit conversions and the chemical dissociation equation [tex]HNO_3(s) - > H^+(aq) + NO_3^-(aq)[/tex]

[tex]4.5molHNO_3 * \frac{1 mol H}{1 mol HNO_3} = 4.5molH+[/tex]

Then, using the pH equation [tex]-log[H+] = pH[/tex] and the formula for molarity [tex]M = \frac{g}{L}[/tex], we can find the value of [tex][H^+][/tex] and in turn the pH of the resulting solution. Keep in mind that both answers for grams of the hydrogen ion and molarity of the hydrogenion should have two significant figures.

[tex]4.5mol H^+ * \frac{1.01gH^+}{1 mol H^+} = 4.6g H^+\\\frac{4.6gH^+}{8000L sol} = 5.8*10^{-4} M H^+[/tex]

Now the pH equation may be used.

[tex]-log(5.8*10^{-4}) = 3.24[/tex]

Note that logarithmic significant figures dictate that the logarithm of a number with x significant figures will result in a value with x digits after the decimal point, meaning that this answer will have two digits after the decimal point and three significant figures.

Answer:

a. a part of ionic bond with Cl

Nya has a cup of hot tea that she lets cool down for several minutes so effect of cooling on the tea is that its particles have less kinetic energy.

Relation between the kinetic enegy and temperature of any substance will be represented as:

K.E ∝ 3/2kT

From the above realation it is clear that kinetic energy is directly proportional to the temperature of the substance. So when a cup of tea cool down its temperature decreases as a result of which kinetic energy of particles present in cup of tea also decreases.

Specific heat dependence on temperature is very weak as compared to K.E. so it will be negligible.

Hence particles of tea have less kinetic energy.

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Answer:

Its particles have less kinetic energy.

Explanation:

Answer:

See below

Explanation:

.045 liter / 22.4  l / mole   * 6.022 x 10^23 molecules/mole   * 2 atoms/molecule  =

( * 2 becuase nitrogen gas is diatomic)

Answer:

bent; two; two.

Explanation:

Based on the chemical formula, the water molecule is consists of 2 Hydrogen atoms and one Oxygen atom.

The water molecule has a bent geometry because it's central atom has two bonds and two lone pairs of electrons.

The molecular sieves absorbing the water in the air is how leaving molecular sieves uncapped for an extended time will affect their functionality.

This is the ability of a substance to adequately suits its purpose or main functions when used.

The molecular sieves will absorb the water in the air, thereby decreasing their ability to absorb in the experiment is how leaving molecular sieves uncapped for an extended time will affect their functionality.

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Answer:

Primary pollutants are emitted from natural or anthropogenic sources directly into the atmosphere, while secondary pollutants result from the chemical reactions or the physical interactions between the primary pollutants themselves or between the primary pollutants and other atmospheric components.

Answer:

561 [gr.].

Explanation:

try the option suggested in the attached picture. The answer is underlined with orange colour.

Based on the periodic table and due to their nonmetallic nature, carbon (C) and oxygen (O) form covalent bonds.

A covalent bond is a type of chemical bond in which elements share electrons. It is formed between nonmetals.

Based on the periodic table, which pair of elements would most likely form a covalent bond?

Based on the periodic table and due to their nonmetallic nature, carbon (C) and oxygen (O) form covalent bonds.

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The required time it would take at a current of 3.5 amps to plate out 2.50 grams of gold is 1,049 seconds.

According to the faraday's second law, equation to calculate the time will be given below:

W = ZIt, where

W = deposit mass = 2.50 grams

Z = equivalent mass / 96500 = 65.6 / 96500 = 0.000679

I = current = 3.5 amp

t = required time = ?

On putting values in above equation, we get

t = (2.50) / (0.000679)(3.5)

t = 1,054 sec = 1,049 s (approx)

Hence required seconds to plate out 2.50 g of gold is 1,049 sec.

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A volatile liquid is one that reacts quickly so it transitions easily into the ground energy state phase.

Ground energy state refers to the state in which is achieved by something burning all of it's potential energy, so that it is in equilibrium. As an example, an apple falling to the ground from a tree . this is because until it hits the ground, it has potential or otherwise some form of energy to burn, disturbing it's equilibrium.

Answer:

3.04 atm

Explanation:

First note r is in l*atm/mole*K

PV=nRT

P = nRT/V = 14.3(.0821)(485)/187 = 3.04 atm

Answer:

When too much carbon monoxide is in the air, your body replaces the oxygen in your red blood cells with carbon monoxide.

Explanation:

This can lead to serious tissue damage or even death. As you mentioned.

Answer: (D) Relative Distance

Explanation:

.

During change of phase, the molecules of a substance acquire enough kinetic energy to overcome the forces of attraction between its molecules.

Change of phase occurs when a substance acquires enough energy to overcome the forces of attraction between its molecules to transition from one state of matter to another.

During a change of phase, kinetic energy of the molecules of the substance increases due to the application of heat, and the freedom of movement of the molecules increases.

Change of phase can occur as follows;

Therefore, during change of phase, the molecules of a substance acquires enough kinetic energy to overcome the forces of attraction between its molecules leading to increased freedom of movement of the molecules.

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Answer:During change of phase, the molecules of a substance acquire enough kinetic energy to overcome the forces of attraction between its molecules.

What is change of phase?

Change of phase occurs when a substance acquires enough energy to overcome the forces of attraction between its molecules to transition from one state of matter to another.

During a change of phase, kinetic energy of the molecules of the substance increases due to the application of heat, and the freedom of movement of the molecules increases.

Change of phase can occur as follows;

from solid to liquid and vice versa

from solid to gas and vice versa

from liquid to gas and vice versa

Therefore, during change of phase, the molecules of a substance acquires enough kinetic energy to overcome the forces of attraction between its molecules leading to increased freedom of movement of the molecules.

Explanation:

Isotopes show similarity in chemical properties, and in exothermic reaction heat is released and in endothermic reaction heat is absorbed.

Chemical reactions are those reactions in which reactants combine with each other for the formation of products.

Hence correct explanations are given above.

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Answer:

1. Top (Chemical)

2. Top (Chemical)

3. Middle (Nuclear)

4. Middle (nuclear)

5. Bottom (Both)

Explanation:

Answer:

Gamma radiation. Explanation: Gamma radiation produces not only the least change in mass and atomic numbers, but produces no change in mass number, atomic number, or electric charge. Both alpha and beta radiation do produce these changes.

Answer:

1.4 l

Explanation:

Assuming they are the same temperature

  5/4 = O/1.12

  1.12 * 5/4 = L of O2 = 1.4 l