A system being studied is classified as an open system. Transferred out of 1
the system is 45 J of energy. The energy is converted to heat, mechanical,
and electrical energy. If mechanical energy measured 20 J and electrical
energy measured 5 J, how many joules were converted to heat energy?*
5 Joules
10 Joules
20 Joules
25 Joules
30 Joules

Answer:

salad

Explanation:

It could be that a new cold or warm air mass is moving in, and the weather might become different as a result.

An air mass is a volume of air described by its temperature and humidity in meteorology. Air masses encompass hundreds or thousands of square miles and adapt to the properties of the area underneath them. They are categorised based on latitude and whether they originate on land or in the sea.

The four primary types of air mass that will effect the weather in North America are maritime tropical (signified with mT), continental tropical (signified with cT), maritime polar (signified with mP), and continental polar (signified with cP) (which uses cP).

Learn more about Air Mass:
https://brainly.com/question/12089291
#SPJ1

Concentration per unit mass may be used instead of volume. Therefore, 4.39M is the concentration of given solution.

Concentration in chemistry refers to the quantity of a material in a specific region. Concentration is sometimes defined as the ratio of a solution's solute to either solvent and total solution. Concentration is often represented as mass per volume.

However, solute concentration can also be represented in moles or volume units. Concentration per unit mass may be used instead of volume. While concentration is often used to chemical solutions, it may be computed for any combination.

molarity = number of moles/ volume of solution

number of moles= 792/ 180.15=4.39mol

molarity =4.39/ 0.001=4.39M

Therefore, 4.39M is the concentration of given solution.

To learn more about concentration, here:

https://brainly.com/question/14803618

#SPJ1

Answer:

A. Solution, Colloid, Suspension

Hope i could help

Answer:

its A

Explanation:

got it right on edge, i hope this helps

Each neutral element has a unique number of electrons and protons. Therefore, each element releases specific electrons when jumping down from an excited state. Each chemical element produces a unique set of neutrons.

Any of the numerous self-contained particles of matter or energy that make up the building blocks of all matter. Also known as an elementary particle. Both the heavier constituents of the atom's small but extremely dense nucleus, the positively charged protons as well as the electrically neutral neutrons, as well as the electrons, the negatively charged, nearly massless particles that still make up the majority of the atom's size, are examples of subatomic particles.

These fundamental atomic building blocks, however, are not the only subatomic particles that have been identified. For example, quarks are the fundamental building blocks of protons, neutrons, and other basic particles. The electron is only one of these particles, along with the muon and neutrino, that belong to this class.

Therefore, each neutral element has a unique number of electrons and protons. Therefore, each element releases specific electrons when jumping down from an excited state. Each chemical element produces a unique set of neutrons.

Read more about subatomic atoms, here

https://brainly.com/question/28422800

#SPJ1

Answer:

because of the reflection that the Sun makes on the water after it rained.

bởi vì sự phản chiếu mà mặt trời tạo ra trên mặt nước sau khi trời mưa

Explanation:

A scientific lens in AP Seminar is a perspective or viewpoint that focuses on using the scientific method and empirical evidence to analyze and understand a given topic or issue.

A scientific lens emphasizes the importance of objective observation, experimentation, and data analysis in forming conclusions and making decisions.In AP Seminar, students are encouraged to use a variety of lenses or perspectives to examine and analyze complex issues. The scientific lens is one of these perspectives, and it is often used to examine topics related to science, technology, and medicine. However, the scientific lens can also be applied to other fields and disciplines, such as economics, psychology, and sociology.

By using the scientific lens, students can gain a deeper understanding of the underlying causes and effects of a given issue, and can develop more informed and evidence-based opinions and solutions. This lens is particularly useful for examining complex and multifaceted issues, as it allows students to break down the issue into smaller, more manageable components, and to analyze each component using the scientific method.

Learn more about scientific method at:

https://brainly.com/question/28946726

#SPJ11

The percentage composition of ethane is 39.99% carbon

60.01% hydrogen and that of sodium hydrogen sulfate is 19.15% sodium 0.84% hydrogen 26.71% sulfur 53.30% oxygen

A. Ethane (C2H6)

To calculate the percent composition of ethane, we need to determine the molar mass of the compound, which is the sum of the atomic masses of all the atoms in the molecule.

Molar mass of ethane = (2 × molar mass of carbon) + (6 × molar mass of hydrogen)

= (2 × 12.011 g/mol) + (6 × 1.008 g/mol)

= 30.07 g/mol

Now we can calculate the percent composition of each element in ethane:

% composition of carbon = (2 × molar mass of carbon ÷ molar mass of ethane) × 100%

= (2 × 12.011 g/mol ÷ 30.07 g/mol) × 100%

= 39.99%

% composition of hydrogen = (6 × molar mass of hydrogen ÷ molar mass of ethane) × 100%

= (6 × 1.008 g/mol ÷ 30.07 g/mol) × 100%

= 60.01%

Therefore, the percent composition of ethane is:

39.99% carbon

60.01% hydrogen

B. Sodium hydrogen sulfate (NaHSO4)

To calculate the percent composition of sodium hydrogen sulfate, we need to determine the molar mass of the compound.

Molar mass of NaHSO4 = molar mass of Na + molar mass of H + molar mass of S + 4 × molar mass of O

= 22.99 g/mol + 1.008 g/mol + 32.06 g/mol + 4 × 16.00 g/mol

= 120.06 g/mol

Now we can calculate the percent composition of each element in sodium hydrogen sulfate:

% composition of sodium = (molar mass of Na ÷ molar mass of NaHSO4) × 100%

= (22.99 g/mol ÷ 120.06 g/mol) × 100%

= 19.15%

% composition of hydrogen = (molar mass of H ÷ molar mass of NaHSO4) × 100%

= (1.008 g/mol ÷ 120.06 g/mol) × 100%

= 0.84%

% composition of sulfur = (molar mass of S ÷ molar mass of NaHSO4) × 100%

= (32.06 g/mol ÷ 120.06 g/mol) × 100%

= 26.71%

% composition of oxygen = (4 × molar mass of O ÷ molar mass of NaHSO4) × 100%

= (4 × 16.00 g/mol ÷ 120.06 g/mol) × 100%

= 53.30%

Therefore, the percent composition of sodium hydrogen sulfate is:

19.15% sodium

0.84% hydrogen

26.71% sulfur

53.30% oxygen

learn more about oxygen here:

https://brainly.com/question/2272415?utm_source=android&utm_medium=share&utm_campaign=question

#SPJ11

The percent yield shows the extent to which the reactants are converetd into products . The limiting reactant is used up in the reaction.

A limiting reactant is the reactant that is in the least amount in the system.  Now;

Number of moles of Fe =  12.21 g/56 g/mol = 0.22 moles

Number of moles of O2 = 13.54 g/32 g/mol = 0.42 moles

Balanced reaction equation;

3Fe(s) + 2 O2(g) = Fe3O4(s)

If 3 moles of Fe reacts with 2 mole of O2

0.22 moles of Fe reacts with  0.22 moles * 2 mole/3 moles = 0.15 moles

Hence, Fe is the limiting reactant

If 3 mole of Fe produces 1 mole of  Fe3O4(s)

 0.22 moles  of O2   produces   0.22 moles * 1 mole/3 moles of  Fe3O4(s) = 0.1073 moles

Mass of  Fe3O4(s) =0.1073 moles  * 232 g/mol =16.9 g

Number of moles of excess reactant = 0.42 moles - 0.15 moles = 0.27 moles

Mass of excess reactant = 0.27 moles * 32 g/mol = 8.64 g

percent yield = 15.88 g/16.9 g * 100/1

= 93.4%

Learn more about percent yiled: https://brainly.com/question/13463225

Answer:

65 g/100 mL of water

Explanation:

Answer:

65g/100ml of water.

Explanation:

Edge 2021.

Following the formula they gave you need to do

i × kb × mass

1 × 2.65 × 2

= 5.3

Change in temperature should be 5.3°C

Answer:

no there is not compound x in chemistry

The maximum number of moles of gas X in the balloon at 37°C is 0.127 mol, and the maximum temperature so that the balloon doesn't burst with 0.0800 mol of gas X is 523 K.

To determine the maximum number of moles of gas X in the balloon at 37°C, we need to use the ideal gas law, PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin. At STP, the pressure is 1 atm, and the temperature is 273 K.

First, we can use the maximum volume of the balloon to calculate the maximum number of moles of gas X that can be in the balloon without it bursting. Assuming the pressure is constant, we can rearrange the ideal gas law to solve for n:

n = PV/RT

n = (1 atm)(2.50 L)/(0.0821 L·atm/mol·K)(273 K)

n = 0.114 mol

So the maximum number of moles of gas X that can be in the balloon without it bursting is 0.114 mol.

Next, we can use the maximum number of moles of gas X to determine the maximum temperature so that the balloon doesn't burst. Again using the ideal gas law, we can solve for the temperature:

T = PV/nR

T = (1 atm)(2.50 L)/(0.114 mol)(0.0821 L·atm/mol·K)

T = 851 K

However, this temperature is too high for the balloon to withstand, so we need to adjust it. We can use the maximum number of moles of gas X that we calculated earlier (0.114 mol) and the given number of moles of gas X (0.0800 mol) to determine the maximum temperature that the balloon can withstand without bursting:

T = (0.0800 mol)(0.0821 L·atm/mol·K)(2.50 L)/(0.114 mol)(1 atm)

T = 523 K So the maximum temperature that the balloon can withstand without bursting is 523 K.

Learn more about STP here:

https://brainly.com/question/24050436

#SPJ11

Answer:

Explanation:

Divide each weight by their respective element weights.

Na\(_2\)S\(_2\)O\(_3\) is the empirical formula for the compound that has 46 grams of sodium, 64 grams of sulfur, and 48 grams of oxygen.

In chemistry, the equation of maybe a chemical compound is the simplest complete number percentage of atoms that make up a molecule. The empirical formulas for sulfur monoxide, SO, and disulfur dioxide, S2O2, are two simple instances of this concept.

They do not, nonetheless, share comparable molecular formulas, which indicate how many elements are contained in each chemical compound's molecules. An empirical formula does not specify the arrangement or number of atoms. Several polymers, including such silicon dioxide, nor ionic compounds, including such calcium chloride (CaCl2), have this property (SiO2).

moles of sodium = 46/23=2

moles of sulfur = 64 / 32=2

moles of oxygen =48 / 16 =3

Na\(_2\)S\(_2\)O\(_3\)  is the empirical formula

Therefore, Na\(_2\)S\(_2\)O\(_3\) is the empirical formula.

To learn more about empirical formula, here:

https://brainly.com/question/14044066

#SPJ6

A solid that forms and settles out of a liquid mixture is called a precipitate.

The process of changing a dissolved component into an insoluble solid from a super-saturated solution is referred to as precipitation. This process takes place in an aqueous solution. The name given to the solid that forms is precipitate. In the event that an inorganic chemical reaction results in precipitation, the chemical reagent that is responsible for the formation of the solid is referred to as the precipitant. To precipitate in chemistry means to generate an insoluble compound, which can occur either through the reaction of two salts or through a change in temperature that affects the solubility of the compound.

To learn more about precipitate, click here:

https://brainly.com/question/24846690

#SPJ4

Answer:

I'm sorry, I cannot provide exact temperature, salinity, or density values for specific ocean locations without further information. The values of these properties can vary greatly depending on many factors such as water depth, water circulation patterns, and local weather conditions. It is also worth noting that ocean temperature, salinity, and density can change over time and can fluctuate on a daily or seasonal basis.

Regarding the similarity in salinity in both areas, ocean salinity is primarily controlled by the balance between the input of freshwater from precipitation, rivers, and glaciers, and the output of salt through processes such as evaporation and the formation of sea ice. The similarity in salinity between two locations could be due to the presence of similar sources of freshwater or similar ocean circulation patterns that mix water from different sources and distribute salt and other dissolved substances evenly across the ocean. However, it is also possible that the salinity could be different due to other factors such as differences in ocean currents, water mixing, or local weather patterns.

Answer:

it is because non living things are not alive and it cannot be

Explanation:

because cells are the building thing of a living thing it is the most particular and simple reason but if you go deeper it consist of things called DNA which is a strips of protein that determines the info of a living things thats why if there is a reasoning that a nonliving things have cell its not.. thats all .

Methanol burns with a standard enthalpy of -715 kJ/g.

The amount of heat released or absorbed during a reaction that takes place under constant pressure is referred to as the enthalpy change. It is given the sign H, which can be read as "delta H".

to determine the enthalpy change

To solve, use the formula H = m x s x T.

You are ready to determine the enthalpy of reaction once you have m, the mass of your reactants, s, the specific heat of your product, and T, the temperature change from your reaction. To solve, just enter your values into the formula H = m x s x T and multiply.

According to the equation, methanol is completely burned.

: 2CH₃OH + 3O₂ → 2CO₂ + 4H₂O.

The reaction enthalpy is −715 kJ/mol.

To know about enthalpy

https://brainly.com/question/29564600

#SPJ4

Explanation:

Sorry pa Wala. Thank God

Answer: 6Fe + 6HCl → 3FeCl3 + 3H2

Explanation:

The equation for the reaction is: 6Fe + 6HCl → 3FeCl3 + 3H2

The relative atomic mass of iron is 55.85. To calculate the amount of hydrogen chloride, we need to first calculate the moles of iron that is reacting. This can be done by dividing the mass of iron (6.16 g) by its molar mass (55.85 g/mol). This gives us 0.11 mol of iron.

Since the reaction is a 1:1 ratio, we know that the same amount of moles of hydrogen chloride will be needed. Thus, 0.11 mol of hydrogen chloride is needed. To calculate the mass of hydrogen chloride, we need to multiply the moles of hydrogen chloride (0.11 mol) by its molar mass (36.45 g/mol). This gives us 4.01 g of hydrogen chloride.

Therefore, the relative atomic mass of iron is 55.85 and the mass of hydrogen chloride needed for the reaction is 4.01 g.

Answer:

D

Explanation:

hope this helps

Answer:

for pH 13 it = strong based the ph 2 is= weak acid

Explanation:

Answer: An existing theory is modified so that it can explain both the old and new observations.

Explanation:

Answer:

The correct anwser would be B

Explanation:

The calorimeter constant Ccal for the coffee cup calorimeter is 780.77 J/°C.

We are given the mass of water, temperature change, and specific heat capacity. We can use these to calculate the calorimeter constant Ccal for the coffee cup calorimeter.

Here's how to do it:

Let the calorimeter constant be Ccal.

Let's use the principle of conservation of energy:Heat lost by hot water = Heat gained by cold water and calorimeter.

We can calculate the heat lost by hot water and heat gained by cold water as follows:

Heat gained by cold water = (mass of cold water) × (specific heat capacity of water) × (temperature change)

q1 = (25.00 g) × (4.184 J/g°C) × (31.40°C - 20.30°C)

q1 = 1175.90 J

Heat lost by hot water = (mass of hot water) × (specific heat capacity of water) × (temperature change)

q2 = (25.000 g) × (4.184 J/g°C) × (45.00°C - 31.40°C)

q2 = 12408.80 J

Heat lost by hot water = Heat gained by cold water and calorimeter.

q1 + Ccal × (temperature change)

= q2Substituting the calculated values,

q1 + Ccal × (temperature change)

= q21175.90 + Ccal × (31.40°C - 20.30°C)

= 12408.80

Simplifying the equation gives:

Ccal = (q2 - q1) / (temperature change)Ccal

= (12408.80 J - 1175.90 J) / (31.40°C - 20.30°C)Ccal

= 780.77 J/°C

Therefore, the calorimeter constant Ccal for the coffee cup calorimeter is 780.77 J/°C.

To learn more about temperature visit;

https://brainly.com/question/7510619

#SPJ11

Answer:

Archaeology

Explanation:

Radioisotopes are radioactive atoms of an element in which their atoms contain excess energy making them unstable. When broken down they become more stable releasing radiations.

Carbon 14 is a radioactive isotope that is used in archaeology to study and estimate the lifespan and age of organic materials such as wood, leather. Carbon 14 can be used to estimate the ages of materials up to 50000 to 60000 years.

Answer:

radioactive isotopes are used in archeology

Answer:

Answer:

There isn't any picture for me to see

have a good day :)

Explanation: