The pressure exerted by a confined gas is the result of

gas particles colliding with each other
gas particles colliding with the walls of the container
nobody knows, it just is
gas particles taking up space in the container

Answer: B) Ten moles of sodium hydroxide and five moles of hydrogen gas will be produced

Explanation: Got it right on USATestPrep

Answer:

b option is correct

Explanation:

we cannot ever know the speed and location of the electron

The equation that relates A and W, considering the desired 15% acetic acid concentration, is 3W = 2.55M.

The equation A = (3/17)W represents the relationship between the mass of acetic acid (A) and the mass of water (W) in the mixture. It states that the mass of acetic acid is equal to three seventeenths (3/17) of the mass of water.

Since the company wants the acetic acid to be 15% of the total mass of the mixture, we can set up another equation to represent this requirement. Let M be the total mass of the mixture. The mass of acetic acid (A) is 15% of the total mass, so we have A = 0.15M.

Now we can substitute A in terms of W from the first equation into the second equation: (3/17)W = 0.15M. We can simplify this equation by multiplying both sides by 17 to get 3W = 2.55M.

This equation allows the company to calculate the mass of water (W) required for a given mass of acetic acid (A) to maintain the desired concentration in the mixture.

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Answer:

D.

Explanation:

Genetic Engineering is a huge part in manipulating a foods property. Chemical engineering mostly the science with numbers in foods.

Biology is literally the life of the food.

Genetic engineering, chemical engineering, biology fields are significantly involved in food engineering.

Hence, Option (D) is correct answer.

Food engineering is the application of engineering principles which develop and design the systems for the production, storing, distributing and processing the food material.

Food engineering is engineering field that combines microbiology, genetic engineering, chemistry engineering, biology and some other branches of science to produce food materials.

Thus from the above conclusion we can say that Genetic engineering, chemical engineering, biology fields are significantly involved in food engineering.

Hence, Option (D) is correct answer.

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From the given data, the name of the hydrated salt would be  \(CoCl_2.83H_2O\).

The formula of the hydrated salt can be determined using the empirical formula approach. That is, we will find the mole equivalent of the anhydrous salt and the water of hydration and then combine them into a single formula after dividing by the smallest mole.

First, we need to determine the mass of the anhydrous salt and the water of hydration.

Mass of crucible (x) = 12.090 g

Mass of hydrated salt + crucible (y) = 16.250 g

Thus, the mass of the hydrated salt can be determined by subtracting x from y.

Mass of hydrated salt = 16.250 - 12.090 = 4.16 g

Mass of hydrate + crucible after evaporating off the water (z) = 12.424 g

Mass of anhydrous salt = z - x

                                      = 12.424 - 12.090

                                      = 0.334 g

Mass of water = 4.16 - 0.334

                        = 3.826 g

Now, let's find the moles:

Molar mass of \(CoCl_2\) = 129.839 g/mol

Molar mass of water = 18.01 g/mol

Mole of \(CoCl_2\) = 0.334/129.839 = 0.00257 mol

Mole of water = 3.826/18.01 = 0.2124 mol

Dividing through by the smallest mole

\(CoCl_2\) =  0.00257 / 0.00257  = 1

water = 0.2124/ 0.00257 = 83

Thus, the formula of the hydrate would be \(CoCl_2.83H_2O\)

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The type of reaction between methane and oxygen to produce water and carbon dioxide is combustion reaction (option E).

Chemical reaction is a process, typically involving the breaking or making of interatomic bonds, in which one or more substances are changed into others.

There are different types of chemical reactions as follows;

A combustion reaction is a reaction wherein a fuel is combined with oxygen, usually at high temperature, releasing heat.

According to this question, methane reacts with oxygen to produce water and carbondioxide. This is an example of combustion reaction.

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Answer:

Dosage of drugs is dependent on the body weight of a person. The route of administration also plays crucial role in determining the dosage of the drugs. The calculation of dosage of drugs based on the bodyweight is calculated by the multiplication of body weight and dosage.

Explanation:

The medication dosage is given as 45mg/kg. To calculate the mass of dosage a child will require of body weight 33.5lb will be:

\(\text{Dose} = \text{Body weight} \times \text{Dosage}\)  

Therefore, converting the pounds to kg, it will be:

\(33.5\;\text{lb} = 15.19\;\text{ kg} \;(1\;\text{lb} = 0.4\;\text{ kg})\)

Thus, dose of medication required will be:

\(\text{Dose} = 15.19 \: \times \: 45\)

\(\text { Dose} = 683.8\: \text { mg}\)

The asbestos exposure during the years 1982 and 1983 was 2.5 fibers per cubic centimeter and 0.8 fibers per cubic centimeter respectively. So asbestos exposure decreased by 1.7 fibers per cubic centimeter during the year 1983.

Breathlessness Persistent, dry cough Chest pain or tightness Lack of a dry, crackling sound in the lungs when you breathe in Wider and rounder fingers and toes are some of the symptoms of asbestos exposure.

The largest group of people exposed to asbestos is those working in the construction industry. Historically, asbestos was also used by pipe fitters and shipyard workers. In addition, asbestos was used by military personnel, auto mechanics, and many other occupations.

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Answer:

Concept: Advanced Chemistry Techniques

While having experienced polar explorers at the Catlin Arctic Survey would have been beneficial in many ways, it would also have been important for them to work collaboratively with the rest of the team.

Advantages:

Experienced polar explorers would have had a wealth of knowledge and skills, such as how to travel over the ice, how to set up camp, and how to handle emergencies.

Experienced polar explorers would have been able to make informed decisions about the best routes to take and the most efficient ways to travel. This could have helped to save time and energy.

Disadvantages:

Experienced polar explorers may have been set in their ways and resistant to new ideas. This could have hindered the team's ability to adapt to changing circumstances and make the most of new opportunities.

Experienced polar explorers may have been overconfident and taken risks that the rest of the team was not comfortable with. This could have put everyone's safety at risk.

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Answer:

kinetic energy

Explanation:

yeah it's correct

Answer:

0.375 J/g°C

Brass

Explanation:

To identify the unknown metal, you first need to calculate the specific heat capacity using the following equation:

Q = mcΔT

In this equation,

-----> Q = heat energy (J)

-----> m = mass (g)

-----> c = specific heat capacity (J/g°C)

-----> ΔT = change in temperature (°C)

You can find the specific heat capacity by plugging the given values into the equation and simplifying to find "c".

Q = 150 J                        c = ? J/g°C

m = 20.0 g                     ΔT = 50°C - 30°C = 20°C

Q = mcΔT                                           <----- Given equation

150 J = (20.0 g)c(20°C)                      <----- Insert values

150 J = (400 g°C)c                             <----- Multiply 20.0 g and 20°C

0.375 J/g°C = c                                  <----- Divide both sides by 400 g°C

The specific heat capacity of the unknown metal is 0.375 J/g°C. According to my research, there is no metal with this exact specific heat capacity. However, the closest I could find was brass (0.377 J/g°C).

Answer: 0.85 hertz

Explanation: Calculator said so also 0.85 is decimal form for 85

Mass of the pure silver deposited on a metal object made into the cathode of the cell is calculated to be 0.0217 gm.

The process of using electrodeposition to coat an object in a layer of metal is called electroplating .

As we know that, Q = I * t

=0.270 * 72

= 19.44 C

Here Q is quantity of electricity , I is current in amperes = 0.270 A (given)

t is time in seconds (72.0 sec)

As 96500 Coulomb of electricity electrolyzes 1 mole of Ag

then,19.44 C of electricity deposits,

=1/96500 * 19.44

= 0.000201 moles of Ag

Mass of Ag is = number of moles * molar mass

= 0.000201 * 108

= 0.0217 gm

Thus, mass of pure silver deposited on a metal object made into the cathode of the cell is  0.0217 gm.

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Answer:Lower

Explanation:

( just had the question on ck12.)

Elements in the alkaline earth metal family of the periodic table have lower electronegativity values than elements in the halogen family of the periodic table as they have less electrons in their valence shell.

Periodic table is a tabular arrangement of elements in the form of a table. In the periodic table, elements are arranged according to the modern periodic law which states that the properties of elements are a periodic function of their atomic numbers.

It is called as periodic because properties repeat after regular intervals of atomic numbers . It is a tabular arrangement consisting of seven horizontal rows called periods and eighteen vertical columns called groups.

Elements present in the same group have same number of valence electrons and hence have similar properties while elements present in the same period show gradual variation in properties due to addition of one electron for each successive element in a period.

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Answer:

Atoms gain energy as a solid changes to a liquid. If atoms energy during a change of state, they are pulled together by attractive forces and become more organized.

Answer:

its B

Explanation:

Answer:

74.87% Carbon

Explanation:

The molecular mass of CH4 is 16.042 g/ mole.

X=(100 × 12.01) / 16.042= 74.87%  

Answer:

\(\boxed {\boxed {\sf 74.87 \% \ C}}\)

Explanation:

We want to find the mass percent composition of carbon in methane: CH₄

First, we must calculate the gram formula mass, also called the molar mass. Use the values for mass found on the Periodic Table. Look for carbon and hydrogen.

There is no subscript after C, so there is just 1 atom. There is a subscript of 4 after H, so there are 4 atoms of hydrogen. We must multiply hydrogen's mass by 4.

Calculate the percent composition.

\(\frac {mass \ of \ part}{mass \ of \ whole} *100\)

The part is the carbon, or 12.011 grams.

The whole is the entire compound, CH₄, or 16.043 grams.

\(\frac { 12.011 \ g }{ 16.043 \ g} *100\)

\(0.748675435*100\\74.8675435\)

Let's round to the nearest hundredth. The 7 in the thousandth place tells us to round the 6 to a 7.

\(74.87 \% \ C\)

The mass percent of carbon is 74.87%

Answer:

Hello, Im Mack. Hope you're doing well. :)

Here is my Correct, custom answer for the lab Question, (I also took the same assignment and got a 100% score)

Explanation:

The heating of the sodium acetate solution made it change from super-saturated to un-saturated. Yet now that it cooled back to room temperature Im sure it is saturated. it wasn't able to disolve the excess sodium acetate left over at room temperature and had to be heated so now that it is back to room temperature I Think it will not disolve the sodium acetate left in the solution until it is heated again.    

Hope this helped you out,

Please feel free to comment for further help, and I'll reply asap.

Have a great day my friend :)

Without the specific figure 6.15, I am unable to provide an exact answer to this question. However, the energy of an electron in an atom is determined by its principal quantum number (n).

Which represents the electron's energy level. The energy of an electron increases as its principal quantum number increases.

The energy of an electron in a particular energy level (n) can be calculated using the formula: E = -13.6 eV/n^2, where eV represents electron volts. This formula is derived from the Bohr model of the atom.

So, if an electron in a lower energy level (such as n=2) is promoted to a higher energy level (such as n=6), the energy of the electron increases accordingly. The energy of the electron in its new energy level can be calculated using the formula above.

Note that the energy levels of electrons in real atoms are more complex than the simplified Bohr model, and the energy of an electron is influenced by many factors beyond its principal quantum number.

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Answer:

This answer is "True"

The order of increasing ionic property is;

WO3 < ZrS2 < MnS2< ZnS < MnS

Ionic compounds are compounds that contain an ion pair. Typically, ionic compounds are formed between metals and nonmetals.

The degree of ionic character depends on the type of metal involved and the magnitude of charge it carries.

Typically, first row transition metals form ionic compounds. The degree of ionic character depends on the row in which the metal is found and the magnitude of charge it carries.

Hence, the order of ionic character of the compounds from most ionic to least Ionic is; WO3 < ZrS2 < MnS2< ZnS < MnS.

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Answer:

The atomic size decreases with an increase in atomic number when we move from left to right.

Explanation: Hope it helps you:))))))

                      Have a great day.

Answer:

Ionic bond

CaO is an ionic bond. Two-element compounds are usually ionic when one element is a metal and the other is a non-metal. It is made up of one metal ion/cation(Ca^2+) and an non-metal ion/anion(O^2-).

Answer: dunno but thanks for the points xd

Explanation:

The mass of nitrogen, N₂ that contains 1.81×10²³ molecules is 8.42 g

From Avogadro's hypothesis,

6.02×10²³ molecules = 1 mole of nitrogen, N₂

But

1 mole of nitrogen, N₂ = 28.02 g

Thus,

6.02×10²³ molecules = 28.02 g of nitrogen, N₂

With the above information, we can obtain the mass of nitrogen, N₂ that contains 1.81×10²³ molecules as follow:

6.02×10²³ molecules = 28.02 g of nitrogen, N₂

Therefore,

1.81×10²³ molecules = (1.81×10²³ × 28.02) / 6.02×10²³

1.81×10²³ molecules = 8.42 g of nitrogen, N₂

Thus, we can conclude that the mass of nitrogen, N₂ is 8.42 g

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NaCl is made of Na and Cl

The molar mass of Na = 22.989 g/mol

The molar mass of Cl = 35.453 g/mol

Molar mass of NaCl = 22.989 + 35.453

= 58.44 g/mol

The tile's suggested answers include amine, alcohol, carboxyl group, and halocarbon.

Hydrocarbons are organic substances comprised of hydrogen and carbon, and include petroleum, methane gas, and coal. Alkanes are both a highly combustible chemical and the main source of fuel in the planet. Its uses include diesel, jet fuel, propane, petrol, and petroleum, to name a few.

The most fundamental category of organic compounds is referred to as a hydrocarbon. As their name implies, they are exclusively made up of the elements hydrogen and carbon. Atoms surround one or more core carbon atoms in hydrocarbon molecules, which are branching or chain-like in shape.

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The complete question is-

Drag each tile to the correct image. Match each hydrocarbon class to its structure. carboxylic acid amine halocarbon alcohol.

The helium tank has a pressure of 650 torr at 25 degree Celsius and when the temperature is tripled, the pressure will be approximately 1945.71 torr

To find the new pressure when the temperature is tripled, we can use the ideal gas law, which states that the pressure of a gas is directly proportional to its temperature when the volume and the number of particles remain constant. The ideal gas law is given by the equation:

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

First, we need to convert the initial temperature of 25 degrees Celsius to Kelvin. Adding 273.15 to the Celsius temperature gives us 298.15 K.

Let's assume that the volume, number of moles, and the gas constant remain constant.

If the temperature is tripled, the new temperature would be 3 times the initial temperature, which is 3 * 298.15 K = 894.45 K.

Now, we can set up a proportion to find the new pressure:

P1 / T1 = P2 / T2

Solving for P2 (the new pressure), we get:

P2 = (P1 * T2) / T1

Plugging in the values, we have:

P2 = (650 torr * 894.45 K) / 298.15 K

Calculating this expression, we find:

P2 ≈ 1945.71 torr

Therefore, when the temperature is tripled, the pressure will be approximately 1945.71 torr.

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Answer:

31.67 mph

Explanation:

To calculate the average speed of the truck, we must first obtain the total distance travelled by the truck followed by the total time taken for the truck to cover the distance travelled.

The following data were obtained from the question include:

Total distance) = 30 + 45 + 50 + 65 = 190 miles

Total time = 1 + 2 +1 +2 = 6 hours

Average speed =.?

Average speed = Total distance / Total time

Average speed = 190 /6

Average speed = 31.67 mph

Therefore, the average speed of the truck is 31.67 mph

Answer:

The given equation is not balanced.

On the left-hand side, there are 3 atoms of potassium (3K), 3 atoms of bromine (3Br), and 1 atom of iron (Fe).

On the right-hand side, there is 1 atom of bromine (Br), 3 atoms of potassium (3K), and 1 atom of iron (Fe).

The number of atoms of each element should be equal on both sides of the equation. Therefore, to balance the equation, we need to adjust the coefficients of the molecules.

The balanced equation is:

3kBr + FeCl3 -> FeBr3 + 3KCl

The balanced equation has 3 atoms of potassium (3K), 3 atoms of bromine (3Br), 1 atom of iron (Fe), and 3 atoms of chlorine (3Cl) on both sides of the equation.