What happens with the energy radiated from the Sun once it gets to Earth? (mark ALL correct answers)
a. Passes through Earth
b. Re-radiated back to the Earth’s surface due to Greenhouse Gases
c. Emitted by the atmosphere into space
d. Absorbed by the surface of the Earth

The energy is required to take a 15.0-g sample of ice at −15.0 °c to liquid water at 45.0 °c is 8.30kj.

The term enthalpy is defined as the sum of the system's internal energy and the product of its pressure and volume.  

Ice warming Cs = 2.09 J/g∙°C

Enthalpy of fusion ∆H = 6.02 kJ/mol

Liquid water warming Cs = 4.18 J/g∙°C

Enthalpy of vaporization ∆H = 40.7 kJ/mol

Steam Warming Cs = 2.01 J/g∙°C

Step 1: Warm ice from −15.0°C to 0°C.

q1 = 470.25 joule

Step 2: Melt ice.

q2 = 5016.66

Step 3: Warm liquid water from 0°C to 45.0°C.

q3 = 2821.5 joule

The total energy is the sum of the energy of each step.

q = q1 + q2 + q3

= 470.25 + 5016.66 + 2821.5

= 8.30kj

Thus, energy is required to take a 15.0-g sample of ice at −15.0 °c to liquid water at 45.0 °c is 8.30kj.

To learn more about the enthalpy, follow the link;

https://brainly.com/question/3393755

#SPJ2

When the carbonic acid sodium bicarbonate buffer pair buffers lactic acid, the following reaction occurs:$$\text{HCO}_3^- + \text{H}^+ \leftrightarrow \text{H}_2\text{CO}_3$$The carbonic acid/bicarbonate buffer system is one of the most important in human blood. When the pH of the blood decreases (becomes more acidic), the amount of bicarbonate ions in the blood decreases, and the concentration of hydrogen ions increases.

A buffer is a solution of a weak acid and its conjugate base that prevents changes in pH when small amounts of strong acid or base are added. Buffer systems protect organisms from pH changes by regulating and neutralizing acids and bases that enter or are produced by cells.

When the carbonic acid sodium bicarbonate buffer pair buffers lactic acid, the following reaction occurs:$$\text{HCO}_3^- + \text{H}^+ \leftrightarrow \text{H}_2\text{CO}_3$$The carbonic acid/bicarbonate buffer system is one of the most important in human blood. When the pH of the blood decreases (becomes more acidic), the amount of bicarbonate ions in the blood decreases, and the concentration of hydrogen ions increases. To balance the excess hydrogen ions, carbonic acid (H2CO3) is formed from carbon dioxide (CO2) and water (H2O). Carbonic acid then decomposes to form bicarbonate ions and hydrogen ions, and the pH of the blood is returned to normal. The bicarbonate ions act as a base, neutralizing the excess hydrogen ions that cause the blood to become more acidic. This is called the bicarbonate buffer system. Lactic acid is produced during intense exercise when the body doesn't get enough oxygen to meet its energy needs. The buildup of lactic acid in muscles can cause fatigue and muscle soreness. The carbonic acid/bicarbonate buffer system can also help to buffer the excess lactic acid produced during exercise, preventing the blood from becoming too acidic.

To know more about sodium bicarbonate visit :

brainly.com/question/8506770

#SPJ11

Answer: The answer is Solid

Explanation: :)

Janet is in the lab performing her favorite experiment. She takes excess zinc and reacts it with 142 ml of nitric acid (density of nitric acid is 1.51 g/ml). The theoretical volume of hydrogen gas at STP released in this reaction is 38.08 L.

To calculate the theoretical volume of hydrogen gas released at STP, we first need to determine the amount of zinc and nitric acid in moles.

1. Find the mass of nitric acid (HNO₃):
Density = Mass/Volume, so Mass = Density × Volume
Mass of HNO₃ = 1.51 g/mL × 142 mL = 214.42 g

2. Convert mass of HNO₃ to moles:
Molar mass of HNO₃ = 1(1.01) + 1(14.01) + 3(16.00) = 63.02 g/mol
Moles of HNO₃ = 214.42 g / 63.02 g/mol ≈ 3.40 moles

3. Write the balanced chemical equation for the reaction between zinc and nitric acid:
Zn(s) + 2HNO₃(aq) → Zn(NO₃)₂(aq) + H₂(g)

From the balanced equation, 1 mole of Zn reacts with 2 moles of HNO₃ to produce 1 mole of H₂. Since excess Zn is present, HNO₃ is the limiting reactant.

4. Calculate the moles of hydrogen gas produced:
Moles of H₂ = (1 mole H₂ / 2 moles HNO₃) × 3.40 moles HNO₃ = 1.70 moles H₂

5. Determine the volume of hydrogen gas at STP (Standard Temperature and Pressure: 0°C and 1 atm):
At STP, 1 mole of any ideal gas occupies 22.4 L. Therefore,
Volume of H₂ = 1.70 moles H₂ × 22.4 L/mol ≈ 38.08 L

The theoretical volume of hydrogen gas released at STP is approximately 38.08 liters.

For more such questions on Theoretical volume.

https://brainly.com/question/16845397#

#SPJ11

The correct answer is

a. It is inversely proportional to the temperature of the gas.

What is Mass?

Mass is a fundamental physical property of matter that determines the weight and force of an object in a gravitational field. It is the amount of matter in an object, and is typically measured in units such as kilograms or grams. The mass of an object is constant and does not change with location, while weight can vary depending on the gravitational force at a given location. Mass is also a measure of the inertia of an object, which is its resistance to a change in motion.

This question relates to the gas laws, specifically the relationship between pressure, volume, temperature, and number of moles of a gas. According to Boyle's Law, when the number of moles of a gas is held constant, pressure and volume are inversely proportional to each other.

However, the question states that volume and number of moles are held constant, so this relationship doesn't apply. Instead, we need to consider Charles's Law, which states that at constant pressure and number of moles, the volume of a gas is directly proportional to its temperature.

Learn more about Mass from given link

https://brainly.com/question/86444

#SPJ1

Answer: 2 Just to clarify

Explanation:

When you walk over a sidewalk with barefoot, your feet make contact with the surface, which conducts heat to your feet.Convection drives the majority of heat energy in the atmosphere.

Conduction transfers heat from heated sand to a bottoms of your feet.Heat is transferred by conduction when two items come into contact.Heat energy passes from the warmer to the colder of two materials when their temperatures differ.

conduction Three methods exist for transferring heat: conduction, convection, and radiation.Energy is transferred directly from one atom to another through conduction.

To know more about thermal energy visit:

https://brainly.com/question/11278589

#SPJ4

decay rate of approximately 1.69x10^17 Bq (becquerels),

The decay rate of a radioactive sample is determined by the number  of radioactive atoms present and the decay constant, which represents the probability of decay per unit of time.

To calculate the decay rate, we multiply the number of atoms in the sample by the decay constant. In this case, the sample has 8.31x10^17 atoms and a decay constant of 0.203/s. Multiplying these values gives a decay rate of approximately 1.69x10^17 Bq (becquerels), which represents the number of decays per second in the sample.

Learn more about Oxygen here : brainly.com/question/13905823

#SPJ11

Answer:

Which observation provided Albert Einstein the clue that he needed to explain the photoelectric effect? Energy of electrons depends on light's frequency, not intensity. A change in which property of light will have no effect on whether or not the photoelectric effect occurs?

Explanation:

Answer:

1. I hypothesize that if you continue to add more drops, then the time it takes will continue to increase.

2. A; 9.70 secs, B; 14.63 secs, C; 18.78 secs, D; 28.70 secs, E; 31.45 secs.

3. The formation continued to increased. As more was added, the time it took to reach the full reaction was increased.  

4. Yes.  

5. When the concentration of all the reactants increases, more molecules or ions interact to form new compounds, and the rate of reaction increases. When the concentration of a reactant decreases, there are fewer of that molecule or ion present, and the rate of reaction decreases.

6. 6mL.

Explanation:

Answer:

C

Explanation:

Ocean waves are something we can see. We cannot see Sound waves.

Answer:

the correct answer is B

Explanation:

Sound waves are longitudinal waves.

A toxicant is a substance such as heavy metals, chemical compounds, and excessive concentrations of nutrients that degrades the environment and is harmful to organisms.

Various criteria can be used to categorize chemical substances. One such analysis is founded on the distinct components present. For instance, hydrides, oxides, and halides all contain one or maybe more hydrogen atoms as well as one or maybe more halide (Group 17) atoms.

A compound is created when two or more components mix through a chemical reaction. A chemical changes involving simple molecules and elements results in the formation of large compounds like proteins.

To know more about Chemical compound visit:

https://brainly.com/question/12166462

#SPJ4

Answer:

To prevent the mixture from separating substances called emulsifiers can be added. These help to form and stabilise the emulsions, preventing or slowing the water and fat/oil from separating. ... The hydrophilic end of the emulsifier molecule is attracted to the water and the hydrophobic end is attracted to the fat/oil.

Answer:

No, it is not an example of a mutation.

Explanation:

Mutations occur in the chromosomes of the organism, in this case the fly. A mutation is a permanent alteration in the DNA of the fly. Therefore, if the fly were to have purple wings when it was born then it would be a mutation. However, in this case we dyed the wings of the fly purple. This does not alter or change the DNA in any way to cause a mutation.

Hope this helps!!

- Kay

Answer:

outer or non - luminous

Explanation:

complete combustion of wax takes place in non-luminous zone of a candle flame.

Answer:

Explanation:

Answer:

40.002

Explanation:

The percent composition of carbon in acetic acid is 40.002%

The mass percentage of the carbon in the compound C₂H₄O₂ is 40.00 %.

The percentage of any element in a given compound is the number of parts by mass of that element present in 100 parts by mass of the given compound.

The mass percentage of an element can be calculated in two steps:

First, calculate the molecular mass of the compound by the addition of the atomic masses of the elements. Then, the percentage of the elements by dividing the total mass of the element present in the compound by the molar mass of the compound multiplied by 100.

Given, the molecular formula of the given compound is C₂H₄O₂. The atomic mass of carbon, hydrogen, and oxygen is 12.011 g, 1.0079 g, and 15.999g respectively.

The molecular mass of the compound =  2(12.011) + 4(1.0079) + 2(15.999)

                                                                = 60.052 g

The mass percentage of the carbon = (24.022/60.052) × 100 = 40.001%

Therefore, the mass percentage of the carbon is equal to 40.00%.

Learn more about  the mass percentage, here:

https://brainly.com/question/16750428

#SPJ2

Answer:

\(\boxed {\boxed {\sf molarity = 0.17 \ M \ C_6H_12O_6}}\)

Explanation:

Molarity is found by dividing the moles of solute by liters of solution.

\(molarity = \frac {moles}{liters}\)

We are given grams of a compound and milliliters of solution, so we must make 2 conversions.

1. Gram to Moles

We must use the molar mass. First, use the Periodic Table to find the molar masses of the individual elements.

Next, look at the formula and note the subscripts. This tells us the number of atoms in 1 molecule. We multiply the molar mass of each element by its subscript.

6(12.011)+12(1.008)+6(15.999)=180.156 g/mol

Use this number as a ratio.

\(\frac {180.156 \ g\ C_6H_12 O_6}{ 1 \ mol \ C_6H_12O_6}\)

Multiply by the given number of grams.

\(78 \ g \ C_6H_12O_6 *\frac {180.156 \ g\ C_6H_12 O_6}{ 1 \ mol \ C_6H_12O_6}\)

Flip the fraction and divide.

\(78 \ g \ C_6H_12O_6 *\frac { 1 \ mol \ C_6H_12O_6}{180.156 \ g\ C_6H_12 O_6}\)

\(\frac { 78 \ mol \ C_6H_12O_6}{180.156 }= 0.432958102977 \ mol \ C_6H_12O_6\)

2. Milliliters to Liters

There are 1000 milliliters in 1 liter.

\(\frac {1 \ L }{ 1000 \ mL}\)

Multiply by 2500 mL.

\(2500 \ mL* \frac {1 \ L }{ 1000 \ mL}\)

\(2500 * \frac {1 \ L }{ 1000 }= 2.5 \ L\)

3. Calculate Molarity

Finally, divide the moles by the liters.

\(molarity = \frac {0.432958102977 \ mol \ C_6H_12O_6}{ 2.5 \ L}\)

\(molarity = 0.173183241191 \ mol \ C_6H_12O_6/L\)

The original measurement has 2 significant figures, so our answer must have the same. That is the hundredth place and the 3 tells us to leave the 7.

\(molarity \approx 0.17 \ mol \ C_6H_12O_6 /L\)

1 mole per liter is also equal to 1 M.

\(molarity = 0.17 \ M \ C_6H_12O_6\)

Answer:

Explanation:

3. The number of electrons and neutrons in an atom are 13 and 14, respectively. Find out the mass number, atomic number, valency, and symbol of the element.

For a neutral atom. number of protons =number of electrons=13

so since atomic number is the number of protons =13

mass number = protons + neutons =14+13 = 27

atomic number 13 is Aluminum (AL-(see periodic table)

The electronic structure for 13 electrons is 1s2s2p63s23p1

so Al has 3 electrons which are VALIENT and can react and when it loses the 3 it will have  CHARGE OF +3

Answer

moles = 5.81 mol

Explanation

Given:

Volume = 144 L

AT SATP

1 mole = 24.4651 L

Solution:

1 mole = 24.4651 L

x mole = 144 L

x = 144/24.4651

x = 5.8 mol

The solute that would have the greatest effect on the freezing point of water is B) 4 mol CO2, which would lower the freezing point by 7.44°C. Option B

The effect of a solute on the freezing point of a solvent is described by the equation:

∆ \(T_f\)= Kf × m

Where ∆ \(T_f\)is the freezing point depression, Kf is the freezing point depression constant, and m is the molality of the solution, which is defined as the number of moles of solute per kilogram of solvent.

Since all the given options have the same number of moles of solute, the one that will have the greatest effect on the freezing point of water will be the one with the highest Kf value.

Kf values depend on the properties of the solvent, but for water, the Kf value is 1.86 °C/m.

Now, calculating the molality for each option:

A) 1 mol KBr in 1 kg of water gives a molality of 1 mol/1 = 1 m

∆ \(T_f\)= 1.86 × 1 = 1.86°C

B) 4 mol CO2 in 1 kg of water gives a molality of 4 mol/1 kg = 4 m

∆ \(T_f\)= 1.86 × 4 = 7.44°C

C) 3 mol CaF2 in 1 kg of water gives a molality of 3 mol/1 kg = 3 m

∆ \(T_f\)= 1.86 × 3 = 5.58°C

D) 2 mol CH4 in 1 kg of water gives a molality of 2 mol/1 kg = 2 m

∆ \(T_f\)= 1.86 × 2 = 3.72°C. Option B

For more such questions on freezing point visit:

https://brainly.com/question/40140

#SPJ11

The difference between sitting in 70 °F water versus sitting in a room at 70 °F is mainly due to the way heat transfers between the body and the surrounding environment.

Water is a better conductor of heat than air, which means it can absorb heat from the body faster than air. Therefore, sitting in 70 °F water may feel colder than sitting in a room at the same temperature because the water will draw more heat away from the body.

Additionally, water also provides buoyancy which can make it more comfortable to sit in. In contrast, sitting in a room at 70 °F will not have the same effect on the body as water because the air is not as efficient at absorbing heat.

For more such answers on Heat Transfer in water
https://brainly.com/question/20493362

#SPJ11

Sitting in 70 °F water would feel different than sitting in a room at 70 °F due to differences in thermal conductivity and heat transfer.

Water has a higher thermal conductivity than air, meaning that it can transfer heat to or from the body more efficiently. As a result, sitting in water at 70 °F may feel colder to the body than sitting in a room at 70 °F. This is because water conducts heat away from the body faster than air, resulting in a greater sensation of coldness.

In addition, the body loses heat through evaporation when in contact with air. In a room at 70 °F, the air may be relatively dry and the body may lose heat through evaporation of sweat. In contrast, when sitting in water at 70 °F, the body is not exposed to air and thus there is less evaporation of sweat, which may make the sensation of coldness more noticeable.

Overall, while both situations may be at 70 °F, the sensation of coldness may be more pronounced when sitting in water due to differences in thermal conductivity and heat transfer mechanisms.

For more question on thermal conductivity click on

https://brainly.com/question/29419715

#SPJ11

The process of a liquid becoming a gas is called boiling (or vapourization) and the process of a solid becoming a liquid is called melting.

Vaporization is the process of converting a liquid into a gas. It is also called evaporation. Since we know that the particles of a gas are moving faster than those of a liquid, an input of energy must be required for a liquid to become a gas.

Melting is a physical process that results in the phase transition of a substance from a solid to a liquid. During melting, the energy goes exclusively to changing the phase of a substance; it does not go into changing the temperature of a substance. Hence melting is an isothermal process because a substance stays at the same temperature.

Example 1: Industrially, salt is recovered from seawater by the process of vaporization. Wet clothes are dried up due to the process of vaporization. The process is used in many industrial processes for separating the components of a mixture.

Example 2: Ice to water - Ice melts back into the water when it is left out at temperatures above the freezing point of 32 degrees. Rocks to lava - Rocks in volcanoes can be heated until they are molten lava. Metal to molten liquid - Metals such as steel and bronze can be molten down.

To learn more about vaporization and melting visit,

https://brainly.com/question/17945501

Autumn needs to look out for seizures in Bailey, the shaggy border collie, as it has been informed by Bailey's owners that Bailey has epilepsy and may require medication.

What is Seizures?

Seizures, also known as convulsions or fits, are sudden, abnormal, and excessive electrical discharges in the brain that can cause changes in behavior, sensation, and consciousness. Seizures can affect people of all ages and can occur due to various factors, such as genetic predisposition, brain injury, infections, metabolic disorders, drug and alcohol abuse, and withdrawal from certain medications.

Seizures are a common symptom of epilepsy, which is a neurological disorder that can cause abnormal electrical activity in the brain leading to seizures. During seizures, dogs may experience sudden and uncontrolled convulsions, loss of consciousness, and involuntary movements of limbs. Therefore, it is important for Autumn to be aware of these symptoms and take appropriate measures to ensure Bailey's safety and well-being.

Learn more about Seizures from given link

https://brainly.com/question/2375809

#SPJ1

Answer:

C

Explanation:

It was the first to show that the atom had no net charge.

a) The sphere emits thermal radiation at a rate of 139.75 Watts.

b) The sphere absorbs thermal radiation at a rate of 37.66 Watts.

c) The sphere's net rate of energy exchange is 102.09 Watts.

To calculate the rates of thermal radiation emission and absorption, we can use the Stefan-Boltzmann law, which states that the rate of thermal radiation emitted or absorbed by an object is proportional to its surface area, temperature, and the Stefan-Boltzmann constant.

a) The rate of thermal radiation emitted by the sphere can be calculated using the formula:

Emitting Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(temperature^4 - environment\ temperature^4\))

Plugging in the given values:

Emitting Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((32.2 + 273.15)^4 - (82.9 + 273.15)^4)\)

Emitting Rate ≈ 139.75 Watts

b) The rate of thermal radiation absorbed by the sphere can be calculated in a similar way but using the environment temperature as the object's temperature:

Absorbing Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(environment\ temperature^4 - temperature^4\))

Plugging in the given values:

Absorbing Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((82.9 + 273.15)^4 - (32.2 + 273.15)^4)\)

Absorbing Rate ≈ 37.66 Watts

c) The net rate of energy exchange is the difference between the emitting rate and the absorbing rate:

Net Rate = Emitting Rate - Absorbing Rate

Net Rate = 139.75 Watts - 37.66 Watts

Net Rate ≈ 102.09 Watts

Therefore, the sphere emits thermal radiation at a rate of 139.75 Watts, absorbs thermal radiation at a rate of 37.66 Watts, and has a net rate of energy exchange of 102.09 Watts.

Note: The units for all the rates are Watts.

Learn more about thermal radiation emission

brainly.com/question/28517392

#SPJ11

The byproduct of glycolysis in the presence of oxygen is pyruvate. Lactate is the main substance that causes acidic accumulation in muscle when oxygen is not present.

Oxamate is favored as the final electron acceptor to regenerate NAD, and NADH is the electron carrier. Glycolysis is the process through which all bodily cells generate energy. Pyruvate is the end product of glycolysis under aerobic conditions, and lactate under anaerobic conditions. Pyruvate proceeds through fermentation in the cell's cytoplasm if oxygen is not present. Fermentation comes in two flavors: Alcoholic fermentation causes the conversion of pyruvate to ethanol and CO2. This is an irreversible reaction that takes place in the cells of plants and fungi (like yeast cells).

To learn more about oxygen click here https://brainly.com/question/2272415

#SPJ4