How many grams of hydrogen chloride are in 50. mL of 11 M HCl solution?

1) Write the proper formula for Mg2+ and Br-

Balance the charges.

Mg2+: Multiply by 1. This gives a total of two positive charges.

Br-: Multiply by 2. This gives a total of two negative charges.

Use multipliers as subscripts

2) Write the proper formula for Al3+ and O2-

Al3+: Multiply by 2. This gives a total of six positive charges.

O2-: Multiply by 3. This gives a total of six negative charges.

Use multipliers as subscripts

The food caloric content of the candy bar in nutritional calories per gram is 135 Cal.

Calorimeter is used to measure the amount of heat energy (Q) produced during a certain reaction. It depends on the mass of the substance (m), heat capacity (c) and the change in temperature (ΔT) during the process.

Mathematically it could be represented as,

\(\rm Q\ =\ m\times c\times \Delta\ T\)

     \(\rm =\ 23.3\times 8.72\times 15.5\)

     \(\rm = 3149.228\ kcal\)

The heat released during the process is 3149.228 kcal.

To calculate the nutritional calories per gram, divide the heat released by the mass in grams.

\(\rm Calories\ per\ gram\ = \frac{3149.228}{23.3}\)

                            \(\rm = 135.16\ kcal\)

                            \(\rm = 135\ Cal\)

Therefore, The food caloric content of the candy bar in nutritional calories per gram is 135 Cal.

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Answer:

Loss of protons and electrons in plutonium 240 decay is not an example of an everyday reaction

You could form approximately 5.8 grams of methanol (CH3OH) from the given gas mixture at STP.

Using the Ideal gas equation;

n = PV / RT

n = (1 atm * 7.82 L) / (0.0821 L·atm/(mol·K) * 273.15 K)

From the question;

nCO = n / 2

nH2 = n / 2

Then;

n = (1 atm * 7.82 L) / (0.0821 L·atm/(mol·K) * 273.15 K)

n = 0.362 mol

nCO = n / 2 = 0.362 mol / 2 = 0.181 mol

nH2 = n / 2 = 0.362 mol / 2 = 0.181 mol

By stoichiometry;

methanol= nCO = 0.181 mol

Mass of methanol =  0.181 mol * 32.04 g/mol

= 5.8 g

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Answer:

The answer is Conduction

Explanation:

Conduction is the process of heat being transferred between objects through direct contact, and it's the most common type of heat transfer.

Answer:

The answer is Conduction

Explanation:

Conduction is the process of heat being transferred between objects through direct contact, and it's the most common type of heat transfer.

I hope this helps!

The name of the molecule which is given below is 2-pentene.

Alkenes are the organic compounds which are composed of carbon and hydrogen atoms, in which double bond is present.

In the given diagram:

So the compound is 2 pentene.

Hence, 2 pentene is the name of the compound.

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Answer:

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Explanation:

Table salt does not melt on the stove, it dissolves in water and does not conduct electricity.

There are several substances listed in the table Epsom salt is another one of these substances. It does not melt on a stove, it dissolves in water and also conducts electricity.

Finally, potassium chloride does not melt on the stove, it dissolves in water and it does conduct electricity. These are the experiences one can have with these common substances.

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Answer:

b. 1.0

Explanation:

Answer:

A mixture of 3 moles of N2, 5 moles of CO2, and 10moles of Cl2 exert a total pressure of 1120 mmHg. What is the partial pressure of CO2?

Explanation:

According to Dalton's law of partial pressures:

The partial pressure of a gas can be determined by using the formula:

\(the partial pressure of a gas = mole fraction of the gas * total pressure\)

Partial pressure of CO2:

\(partial pressure of CO2= total pressure * mole fraction of CO2\\\\Mole fraction of CO2=\frac{number of moles of CO2}{total number of moles of all the gases} \\mole fraction of CO2=\frac{5mol}{3mol+5mol+10mol} = 5/18\\Partial pressure of CO2=\frac{5}{18} * 1120mmHg\\ =311.1mmHg\)

Hence, the partial pressure of CO2 is 311.1mmHg.

Answer:

here you are

Explanation:

atomic energy

Answer:

Distance, some kind of distance or length.

Explanation:

A hydronium ion is H30+. To perform the reaction with hydronium ion, the student could use either of the following sets of reagents H₂O, HCl and H₂O,H₂SO₄.

It is obtained when the lone pair of electrons on oxygen atom of water molecule is donated to a proton. A coordinate covalent bond is formed between oxygen atom and proton.

The proton can be obtained from the ionization of an acid such as hydrochloric acid (HCl) or sulfuric acid (H₂SO₄) .

HCl + H₂O → H₃0⁺ + Cl⁻

H₂SO₄ + H₂O → H₃0⁺ + HSO₄⁻

Hence, to perform the reaction with hydronium ion, the student could use either of the following sets of reagents H₂O, HCl and H₂O,H₂SO₄.

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Answer:

12.5 grams

Explanation:

Answer:

Explanation:

1,2,4,

The equations that show combustion are equations A, B and D.

When we talk about combustion, the idea is that the substance would be burnt in oxygen. In other words, the combustion can be taken to be an oxidation reaction. It is an oxidation reaction in the sense that the oxidation number of the substance that is reacting with the oxygen would become increased.

When we look at the equations that we have, it is quite easy to pick out among the balanced reaction equations that are shown here the ones that has to do with the burning of the substance in oxygen and a consequent rise in the oxidation number.

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Answer: 6.23

Explanation:

1) solve for pH  

pH=-log (H3O+) = - log 1.7 X 10^-8 =7.77

2) now do 14-pH  = 14 -7.77=6.23

Accordingly, under the specified circumstances, 18.0 liters of gaseous octane will result in 144.3 liters of water (H2O).

Chemical Equation: A chemical equation is a representation of a chemical process using the symbols and substance formulas.

The volume of gaseous octane may be converted to moles using the ideal gas law as follows:

n = PV / RT

We may use the following numbers assuming standard temperature and pressure (STP), which are 0 °C and 1 atm:

P = 1 atm

V = 18.0 L

T = 273 K

R = 0.0821 L atm/mol K

n = (1 atm) * (18.0 L) / (0.0821 L atm/mol K * 273 K)

n = 0.736 moles of gaseous octane

Now, we can calculate the quantity of moles of water (H2O) generated using the stoichiometry of the balanced chemical equation:

2 moles C8H18 : 18 moles H2O

0.736 moles C8H18 : x moles H2O

x = (0.736 mol C8H18) * (18 mol H2O / 2 mol C8H18)

x = 6.624 moles H2O

Using the ideal gas law, we can finally translate the quantity of water (H2O) in moles to volume (in liters):

V = nRT / P

Assuming STP, we have:

P = 1 atm

V = ?

n = 6.624 mol

T = 273 K

R = 0.0821 L atm/mol K

Plugging in these values, we get:

V = (6.624 mol) * (0.0821 L atm/mol K) * (273 K) / (1 atm)

V = 144.3 L

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To prepare a 0.12 M solution of FeCl₃, the amount of solid FeCl₃ to be dissolved in a given volume of solvent will be 9.72 grams.

Given,

Molarity of FeCl₃ (M)= 0.12 M

The molecular weight (m) of FeCl₃ is  = 162 gm

The volume of the solution (V) to be prepared is =500 ml

The amount of FeCl₃ to be dissolved to make a 0.12 M solution is= x

So,

MV= x ÷ m × 1000

0.12× 500 = x ÷ 162 × 1000

x = 60 × 162 ÷ 1000

x= 9.72 gm

So 9.72 grams of FeCl₃ is dissolved to make 500 ml of 0.12 M solution.

For preparing 0.4 M HCl from 4M HCL:

If we need to make 500 ml of solution with 0.4M of HCL, then we use the formula:

M₁V₁= M₂V₂

0.4 × 500= 4 × x

x= 50 ml

So 50 ml of 4M HCL is taken to make 0.4 M HCL.

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Answer:

A. The reaction shifts to the right (products) and the concentrations of I and H₂ decrease.

Explanation:

If gas is removed from the system at equilibrium, the system will try to compensate for the loss by shifting the reaction in a direction that produces more gas molecules. This is known as Le Chatelier's principle, which states that a system at equilibrium will respond to a disturbance by shifting in a way that minimizes the effect of the disturbance.

In this case, since gas is being removed from the system, the reaction will shift to the side that produces more gas molecules. Looking at the balanced equation, we can see that 2HI(g) has a greater number of gas molecules compared to H₂(g) and I₂(g). Therefore, the system will shift to the right (products) to produce more HI(g) and reestablish equilibrium.

The volume of the gas at 118°c is 256.34 ml

The calculation can be done as follows

The first is to write out the parameters

(V1)First volume= 126 ml

(T1)First temperature= 58°C

(T2)second temperature= 118°C

(V2)second volume= ?

The formular is

V1/T1= V2/T2

126/58= V2/118

Cross multiply

58 ˣ V2= 126 ˣ 118

58 ˣ V2= 14868

V2= 14868/58

V2= 256.34 ML

Hence the second volume is 256.34 ml

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Answer:

149ml

Explanation:

V1/V2 = V2/T2

V2 = V1 *T2 / T1

= 126 mL * 391 K / 331 K

= 149 mL

Answer:

The answer is D.

Explanation:

Answer:

1.

Chemical: Aspirin

Plant: Willow tree bark

Disease: Used to reduce pain, fever, or inflammation

2.

Chemical: Digoxin

Plant: Flower, Digitalis lanata

Disease: Used to treat various heart conditions

Answer:

N₂ + 3H₂ → 2NH3

4Fe + 2Cl₂ → 4FeCl

Explanation:

This equations are now balanced

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The kJ of the energy absorbed for the every mole of the carbon reacted is 104.8 kJ.

The chemical equation is as :

2C + 2H ---> C₂H₄   ,     ΔH = + 52.4 kJ/mol

The ΔH is the enthalpy change that is determined by the subtracting the energy of the reactants to the products.

The  ΔH = energy of the products - energy of the reactants

The expression for the energy is as :

q = n ΔH

Where,

n = number of the moles

ΔH = enthalpy change

The kJ of the energy absorbed for the every mole of the carbon reacted :

q = 2 mol × 52.4 kJ/mol

q = 104.8 kJ

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Eris is round an orbits the sun, it is slightly smaller than the planet Mercury. Yet, Eris is classified as a dwarf planet because Eris is a plutoid. It is a trans-Neptunian dwarf planet. It is the most distant dwarf planet which  is located beyond the orbit of the Neptune.

The orbital characteristics of Eris are more specifically categorized as a scattered disk object. It has been scattered into more-distant and unusual orbits which follows the gravitational interactions with the Neptune as the solar system was forming.

Eris was discovered in 2005 and was classified as the planet. It is a celestial body that orbits the sun, and has enough mass to be round in shape. It has not cleared neighborhood around its orbit as it is a dwarf planet.

Eris is classified as a plutoid because it is farthest from the sun than Neptune. It is massive enough to be pulled into a spherical shape but not as massive as eight planets of solar system.

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Answer:

Explanation:

Air outside the cup affect the kinetic energy of the particles in the wall and the cold water by transferring its heat to the cup and cold water.

Explanation:

The air outside the cup has a high temperature as compared to that of the cold water with in the cup.

As this hot and moist air it comes in contact of cup, it transfers its heat energy and become cool itself thereby leaving water droplet on the outer side of the cup.

Due to heat imparted to the cup, the atoms with in the cup and cold water starts vibrating and hence there kinetic energy increase.

Kinetic energy is the energy required and present in an object in motion. Air present in the atmosphere affects the kinetic energy of the particles and transfers heat.

When the temperature of the two things is different then the thermal energy moves from the place of the high towards the low heat. The air present outside the cup has a high temperature compared to the cold water present in the cup.

When the hot air of the surrounding comes in contact with the cold water surface then the heat and the thermal energy is transferred and water droplets are formed on the external side of the cup.

Because of the transfer of the heat, the molecules of the water and the cup starts vibrating and the kinetic energy increases.

Therefore, the transfer of heat changes the temperature.

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Mass of iron(ll) oxide= 616.608 g

Given

Reaction

2Fe+O2 -->2FeO

479.6 grams of iron

Required

mass of iron(ll) oxide

Solution

mol of iron :

= mass : Ar Fe

= 479.6 g : 56 g/mol

= 8.564

From the equation, mol FeO :

= 2/2 x mol Fe

= 2/2 x 8.564

= 8.564 moles

Mass of iron(ll) oxide :

= mol x MW

= 8.564 x 72 g/mol

= 616.608 g

Answer:

The first one is ground and the second one is excited  

Explanation: