ASAP Ag2O(s) → 2Ag(s) + ½ O2(g) ΔH° = 31.05 kJ


Which statements concerning the reaction above are true?
(1) heat is released
(2) heat is absorbed
(3) reaction is exothermic
(4) reaction is endothermic
(5) products have higher enthalpy content than reactants
(6) reactants have higher enthalpy content than products

A) 1, 3, and 5
B) 1, 3, and 6
C) 2, 4, and 6
D) 2, 4, and 5

Answer:

public health

Answer: Clean water is important to (public health). Diseases can spread through cities due to unclean water.

Explanation: I hope this helps!

The term solubility has to do with the ability of a solute to dissolve in a solvent.

The term solubility has to do with the ability of a solute to dissolve in a solvent. The solubility of a solute can be obtained by reading of the solubility curve.

The answers to the questions are;

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Answer:

C would be the answer.

Explanation:

Answer:

The answer is C. the distribution of electrons in different shells

Explanation:

I got it right on the test

Answer:

The answer is covalent bonding.

Explanation:

When both non-metals react, they will form Covalent bond .

When metals react with non-metal, they form Ionic bond .

When phosphorus (P) reacts with oxygen (O2), they form covalent bonds to create phosphorus pentoxide (P4O10), a chemical bond formed by the sharing of electron pairs between atoms.

When phosphorus (P) reacts with oxygen (O2), it forms a compound called phosphorus pentoxide (P4O10). The type of bond formed in this reaction is a covalent bond. A covalent bond is a chemical bond formed by the sharing of electron pairs between atoms. In this case, phosphorus and oxygen share electrons to achieve a stable electron configuration. Phosphorus needs 3 more electrons to complete its outer shell, while oxygen needs 2 more. So, they share electrons mutually to meet their requirements, forming covalent bonds.

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Answer:

The answer IS NOT 448

it might be 0.448 but im not sure

Explanation:

i trusted the person above and it was incorrect so wanted to let yall know its not c

Moles are produced when there is magnesium Explanation:

Final answer:

The 3.5kg bowling ball rolling at 30m/s has a higher momentum than the 50kg student moving at 1.75m/s.

Explanation:

The momentum of an object is defined as the product of its mass and velocity. Therefore, to determine which object has a higher momentum, we need to calculate the momentum of each object. The momentum of an object can be calculated using the formula: momentum = mass * velocity.

For the 3.5kg bowling ball rolling at 30m/s, the momentum would be: momentum = 3.5kg * 30m/s = 105kg.m/s.

For the 50kg student moving at 1.75m/s, the momentum would be: momentum = 50kg * 1.75m/s = 87.5kg.m/s.

Comparing the two, we can see that the bowling ball has a higher momentum of 105kg.m/s, compared to the student's momentum of 87.5kg.m/s.

Answer:

RADIATION IS THE PROCESS WHERE HEAT IS TRANSFERRED THROUGH ELECTROMAGNETIC WAVES THAT MOVE THROUGH SPACE.

Explanation:

Radiation is the transfer of energy in the form of waves through space or a  material medium. It involves the emission of energy through electromagnetic waves such as radio waves, x-rays, gamma rays. Also, particles such as electrons, protons and neutrons are regarded as radiations when they travel at high velocities. Radiation are categorized into two; ionizing and non-ionizing radiations depending on the energy the matter carries.  In ionizing radiation, matters carry sufficient energy which can be used to ionize atoms or molecules and even break chemical bonds; charged particles or ions are therefore produced in matter and such radiations include gamma rays, x-rays, alpha particles, beta particles.

'B. When heat gets transferred through electromagnetic waves that move through space' explains the process of radiation.

Radiation is a method of heat transfer that does not require any medium. This means that heat energy can travel through the vacuum of space. The Sun warming the Earth is a perfect example of radiation. Here’s how it works step-by-step:

Emission of Electromagnetic Waves: A hot object, such as the Sun, emits electromagnetic waves, which may include infrared radiation, visible light, and others.

Travel Through Space: These electromagnetic waves travel through the vacuum of space; no particles are needed to carry this energy.

Absorption: When these waves reach another object, like Earth, they get absorbed by the object’s surface, warming it up.

Different types of electromagnetic waves include radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. Each type carries energy and can transfer heat through radiation.

Answer:

Roughly 323g of H2O.

Explanation:

Balance your chemical equation:

1 Fe3O4 + 4H2 → 3 Fe + 4 H2O

Modulate your stoichiometry 4 steps:

[tex]750g \times \frac{1mol}{55.8g} \times \frac{4mol}{3mol} \times \frac{18g}{1mol} = \\ = \frac{54000}{167.4} = \\ = 322.581g[/tex]

To calculate the atoms of an element in a given molecule, we need to multiply stoichiometry by the number that is written on the foot of that element. Therefore, 180g of H2O will be produced if 750 grams of Fe are produced.

Stoichiometry is a part of chemistry that help us in making relationship between reactant and product from quantitative aspects.

The balanced equation is

Fe[tex]_3[/tex]O[tex]_4[/tex]+ 4H[tex]_2[/tex] → 3Fe+ 4H[tex]_2[/tex]O

Molar mass of Fe=55.845 g/mol

mass of Fe=750 grams

Moles of Fe=13.4moles

The mole ratio between water and Fe is 3:4.

moles of  H[tex]_2[/tex]O produced=(3/4)×13.4moles=10.0

Mass of H[tex]_2[/tex]O produced=molar mass of H[tex]_2[/tex]O × number of moles of H[tex]_2[/tex]O

Mass of H[tex]_2[/tex]O produced=18× 10.0

Mass of H[tex]_2[/tex]O produced=180g

Therefore, 180g of H2O will be produced if 750 grams of Fe are produced.

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Answer:

.000000022

Explanation:

H3O+=10^-pH

- Hope that helps! Please let me know if you need further explanation.

Answer:it is a

Explanation:

The color of a rock is determined by the type of mineral it contains. The presence of certain elements and the way light interacts with these minerals can influence the color. While other factors like texture or grain pattern may affect appearance, they do not fundamentally determine the color.

The color of a rock is primarily determined by its mineral type. Different minerals have different colors due to various factors like the way light reflects off their surfaces, their structure, and the presence of certain elements. For example, quartz can be clear or cloudy white, obsidian is a dark, glossy black, and amethyst, a type of quartz, is purple due to the presence of iron. While the texture, grain shape or pattern may affect the overall appearance of a rock, it's the mineral content that fundamentally determines its color.

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Answer:

Freon

Explanation:

Answer:

Freon

Explanation:

Freon is used as a refrigerant.

Answer:

Pretty sure that its benzene

Answer:

A

Explanation:

Every thing was first a bunch of gas.

The answer would be A) Kyrpton

---

After looking at all of these numbers we can see that the element with the highest number of protons is krypton, at 36 protons.

~Hope I could help! Stay safe!~

Answer:

B

Explanation:

Answer:

protons

Explanation:

Answer:

1) B     2) A

Explanation:

just did it on edg 2020

Answer:

kinetic energy

Explanation:

because of the movement of gravity and space

Answer:

A

Explanation:

Answer: 7.92%

Explanation:

I just answered the question and got it correct.

There is a golden role of solubility, polar solute dissolve in polar solvent and non polar solute dissolve in non polar solvent. Therefore, the percent volume of pyrimidine in this solution is 79.1%.

Solutions are a homogeneous mixture of two or more substances. A solution is a homogeneous mixture of solvent and solute molecules. Solvent is a substance that is in large amount in solution. solute is the substance which is in small amount in a solution.

percent volume=(Volume of Solute/Volume of Solution)×100

Volume of Solute=38.0L

Volume of Solution= 442.0L + 38.0L=480L

substituting all the given values in the above equation, we get

percent volume=(38.0L/480L)×100

percent volume = 79.1%

Therefore, the percent volume of pyrimidine in this solution is 79.1%.

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The molarity of the solution is approximately 0.141 M. To find the molarity of the solution, we first need to calculate the number of moles of glucose present in the solution using the given mass of glucose and its molar mass.

The molar mass of glucose (C6H12O6) can be calculated by adding the atomic masses of its constituent atoms:

[tex]\[ \text{Molar mass of glucose} = 6 \times \text{Atomic mass of C} + 12 \times \text{Atomic mass of H} + 6 \times \text{Atomic mass of O} \][/tex]

Using the atomic masses provided by the periodic table:

[tex]\[ \text{Molar mass of glucose} = 6 \times 12.01 \, \text{g/mol} + 12 \times 1.01 \, \text{g/mol} + 6 \times 16.00 \, \text{g/mol} \][/tex]

[tex]\[ = 72.06 \, \text{g/mol} + 12.12 \, \text{g/mol} + 96.00 \, \text{g/mol} \][/tex]

[tex]\[ = 180.18 \, \text{g/mol} \][/tex]

Now, we can calculate the number of moles of glucose using the given mass of glucose:

[tex]\[ \text{Number of moles of glucose} = \frac{\text{Mass of glucose}}{\text{Molar mass of glucose}} \][/tex]

[tex]\[ = \frac{5.10 \, \text{g}}{180.18 \, \text{g/mol}} \][/tex]

[tex]\[ \approx 0.0283 \, \text{mol} \][/tex]

Next, we calculate the volume of the solution in liters:

[tex]\[ \text{Volume of solution} = 200.9 \, \text{mL} \times \frac{1 \, \text{L}}{1000 \, \text{mL}} \][/tex]

[tex]\[ = 0.2009 \, \text{L} \][/tex]

Now, we can find the molarity of the solution using the formula:

[tex]\[ \text{Molarity} = \frac{\text{Number of moles of solute}}{\text{Volume of solution in liters}} \][/tex]

[tex]\[ = \frac{0.0283 \, \text{mol}}{0.2009 \, \text{L}} \][/tex]

[tex]\[ \approx 0.141 \, \text{M} \][/tex]

Therefore, the molarity of the solution is approximately 0.141 M.

Biodiversity is vital for ecosystem resilience, economic benefits, and human health, with examples like the Amazon rainforest illustrating its importance. Biodiversity also provides essential genetic resources for breeding and holds undiscovered potential for scientific advancement.

Biodiversity is paramount due to its extensive benefits to ecosystems, the economy, and human health. With over 5 million known species, biodiversity contributes to the resilience of ecosystems, allowing them to recover from disturbances and providing a buffer against catastrophic events. An example of biodiversity is the Amazon rainforest, where a vast number of species coexist, each playing a role in maintaining the ecological balance. Economic benefits stem from biodiversity's direct provision of food, medicine, and raw materials, many of which we are yet to fully discover and understand. Biodiversity also ensures the availability of genetic resources which are crucial for crop and livestock breeding, leading to food security. Our current lack of knowledge about so many species indicates there is much more to learn, including potential breakthroughs in science and medicine that could enrich human life.

Answer:

For 1-7

Radio Waves

Microwaves

Infrared Waves

Visible Light Rays

Ultraviolet Waves

X-rays

Gamma Rays

And for 8-10

8. shorter

9.higher

10. longer

Answer:

Explanation:

 1. Radio Waves

 2. Microwaves

  3.   Infrared Waves

  4.Visible Light Rays

   5. Ultraviolet Waves

    6. x-rays

    7. Gamma Rays

       8. shorter

      9.higher

     10. longer

Answer:

C. 11400 years.

Explanation:

The time constant of the isotope is:

[tex]\tau = \frac{5730\,yr}{\ln 2}[/tex]

[tex]\tau = 8266.643\,yr[/tex]

The decay of the isotope is described by the following model:

[tex]\frac{m(t)}{m_{o}} = e^{-\frac{t}{\tau} }[/tex]

[tex]-\frac{t}{\tau} = \ln \frac{m(t)}{m_{o}}[/tex]

[tex]t = -\tau \cdot \ln \frac{m(t)}{m_{o}}[/tex]

[tex]t = -(8266.643\,yr)\cdot \ln \left(\frac{1}{4} \right)[/tex]

[tex]t \approx 11460.001\,yr[/tex]

The right answer is C.