Fill in the blanks to complete each statement about the heating of Earth's surface.

Earth takes in thermal energy from the Sun in a process called

Sunlight strikes Earth's surface at different angles. This angle is called the angle of

( LOOK AT SCREENSHOT)

Answer:

50 dollars

Explanation:

1 nickel= 5 cents

1000 times 5 = 5000 cents

5000 divided by 10

= 50 dollars

Answer:

50 dollars

Explanation:

Answer:

B

Explanation:

it flows by the conduction currents

NADPH inhibits the pentose phosphate pathway

NADPH is a product of the pentose phosphate pathway, which generates NADPH and ribose-5-phosphate.

NADPH is a coenzyme that plays a vital role in many metabolic processes, including the pentose phosphate pathway.

Therefore, it is incorrect to say that NADPH inhibits the pentose phosphate pathway. Instead, NADPH is a key participant in this pathway, where it is produced and utilized to synthesize nucleotides, amino acids, and fatty acids, and to protect cells against oxidative stress

When there is an excess of NADPH, it can inhibit the pentose phosphate pathway through feedback inhibition, thus reducing the production of NADPH. This is important to maintain a balance of NADPH and other metabolites in the cell.

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Seawater taken from an area with a large, growing plant population has high O2 and low nutrient content.

The presence of a large plant population in a body of water affects the content of oxygen and nutrients. Oxygen production increases when there is a greater amount of photosynthesis taking place, which occurs when there is a large population of plants.

The increase in oxygen levels in turn results in a decrease in nutrient content since many of these nutrients are utilized during the process of photosynthesis. Alternatively, the other options such as low CO2 and high nutrient content, low O2 and low nutrient content, high O2 and high CO2 content, none of these is correct are incorrect.

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It would be preferable to design the Milky Way Galaxy as a huge barred spiral galaxy.

The Milky Way makes it possible to examine a medium-sized spiral galaxy's functioning in great detail. Similar to how the sun provides the basis for our complete study of stars, it serves as the basis for our knowledge of what occurs within galaxies.

The technology needed to move between galaxies is much beyond what humanity is now capable of, and it is currently solely the stuff of science fiction. Theoretically speaking, however, there is nothing that demonstrates definitively that interstellar travel is not feasible.

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Answer:

C. WATER VAPOUR

these are gaseous in state so gases have more entropy than other states.

nope it helps

have a nice day

Atoms are smallest particle of any entity; Atoms consist of three fundamental types of particles, protons, electrons and neutrons. Option C & D are the correct statement.

Define an atom?

Atoms are the smallest particle of an element. Atoms cannot be broken into sub parts. It consisting of 3 particles like, protons, electrons and neutrons.

Atoms of the all substance do not have same chemical properties. Because, atoms have different number of proton and electrons. Atoms cannot be destroyed by heating or cooling. Smallest unit atoms have elemental chemical identity and atoms can combine to make all the substance on earth.

Therefore, statement C and D are correct.

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The statement that correctly describes atoms are:

c. Atoms are the smallest unit of an element that has the chemical identity of that element.

d. Atoms combine to make all the substances on Earth.

The tiniest component of an element is called an atom. Atoms are not divisible into smaller components. It is made up of three different particles: protons, electrons, and neutrons.

All atoms do not share the same chemical characteristics. Because the quantity of protons and electrons in each atom varies. No amount of heat or cold can kill an atom.

Therefore, the correct option is c and d.

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The principle of option D. Uniformitarianism states that the physical, chemical, and biological processes at work shaping the Earth today have also operated in the

Option D. Uniformitarianism is the principle stating that the physical, chemical, and biological processes at work shaping the Earth today have also operated in the geologic past. It is based on the idea that the present is the key to the past. In other words, the same natural laws that operate in the universe today have been operating since the beginning of time.

James Hutton was the first to propose this principle in the late 18th century. He suggested that the Earth was shaped by slow-acting geological forces such as erosion, sedimentation, and uplift over long periods of time. He believed that the same processes were still happening today and that they had operated in the past.

This principle is an important concept in geology because it allows scientists to interpret the Earth's history based on the processes that they observe today. By understanding how these processes work and how they have changed over time, scientists can reconstruct the history of the Earth and its environments.

Uniformitarianism has been tested and proven through many observations and experiments. For example, the study of sedimentary rocks has shown that they were formed in the past through the same processes that are observed today, such as deposition of sediment by water, wind, or ice.

Similarly, the study of volcanoes has shown that they are formed by the same processes as today, such as the movement of magma from deep within the Earth.

In conclusion, Uniformitarianism is the principle that allows us to interpret the Earth's history by observing the processes that shape it today. It is a fundamental concept in geology and has been tested and proven through many observations and experiments.

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Objects seem to move across the sky, and Earth did not feel like it was moving.

Objects seem to move across the sky, and Earth did not feel like it was moving. The correct option is C.

Any hypothesis of the framework of the solar system (or the universe) in which Earth is assumed to be at the center of it all is referred to as a geocentric model.

Archimedes of Alexandria's geocentric model was the most advanced.

It involves following points:

Artifacts appear to be moving across the sky, but Earth does not appear to be moving.

Thus, the correct option is C.

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The claim that the atomic model should not be continually changed is based on the principle of scientific stability and coherence. Continually changing the atomic model can undermine the stability of scientific understanding and impede the development of robust theories.

The claim that the atomic model should not be continually changed is based on the principle of scientific stability and coherence. Continually changing the atomic model can undermine the stability of scientific understanding and impede the development of robust theories. The current atomic model, based on quantum mechanics and the understanding of subatomic particles, has provided a consistent framework that has successfully explained and predicted numerous phenomena. This model has undergone rigorous testing, verification, and refinement over the years. While scientific progress and new discoveries are essential, it is important to maintain a balance between incorporating new evidence and maintaining a stable foundation. Frequent changes to the atomic model can lead to confusion and make it difficult to build upon existing knowledge. It is preferable to refine and expand upon the current model as new evidence emerges, rather than discarding it entirely. This approach ensures continuity and progress in scientific understanding while maintaining a coherent framework for further exploration.

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Nitrous acid has the chemical formula HNO2. To determine the number of oxygen atoms in 15 mg of nitrous acid, we need to first calculate the number of moles of nitrous acid in 15 mg. The molar mass of nitrous acid is 47.013 g/mol.

Therefore, 15 mg of nitrous acid is equivalent to 0.000319 moles. In one molecule of nitrous acid, there are two oxygen atoms. Thus, the number of oxygen atoms in 15 mg of nitrous acid would be 0.000319 moles multiplied by 2 oxygen atoms, which is equal to 0.000638 oxygen atoms. Therefore, there are approximately 0.000638 oxygen atoms in 15 mg of nitrous acid.
To find the number of oxygen atoms in 15 mg of nitrous acid (HNO2), first determine the number of moles of nitrous acid. Nitrous acid has a molar mass of 1(H) + 14(N) + 16(O) * 2 = 47 g/mol. Divide the mass by the molar mass: 15 mg / 47 g/mol = 0.00032 mol (convert mg to g).

Now, find the moles of oxygen atoms in nitrous acid. Each molecule of HNO2 has 2 oxygen atoms. So, 0.00032 mol HNO2 * 2 = 0.00064 mol of oxygen atoms.

Finally, calculate the number of oxygen atoms using Avogadro's number (6.022 x 10^23 atoms/mol): 0.00064 mol * 6.022 x 10^23 atoms/mol = 3.85 x 10^20 oxygen atoms in 15 mg of nitrous acid.

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Answer:

\(\boxed {\boxed {\sf About \ 2.23 \ moles \ CH_4}}\)

Explanation:

First, find the molar mass of CH₄

This compound is made of carbon (C) and hydrogen (H). Look on the Peirodic Table for the masses of both elements.

Now, count the number of moles in the compound. There is no subscript on C, indicating 1 mole. There is a subscript of 4 on H, indicating 4 moles. We must multiply the molar mass of hydrogen by 4.

Add the 2 masses.

Next, find the number of moles in 35.7 grams.

Use the molar mass of CH₄ as a ratio.

\(\frac{16.043 \ g \ CH_4}{1 \ mol \ CH_4}\)

Since we want the units of grams CH₄ to cancel when we multiply, we must flip the ratio.

\(\frac{1 \ mol \ CH_4}{16.043 \ g \ CH_4}\)

Multiply by 35.7 grams.

\(35.7 \ g \ CH_4 *\frac{1 \ mol \ CH_4}{16.043 \ g \ CH_4}\)

The grams of CH₄ will cancel each other out.  Since there is a 1 in the numerator, we can also move 35.7 to the numerator.

\(35.7 *\frac{1 \ mol \ CH_4}{16.043 }\)

\(\frac{35.7 \ mol \ CH_4}{16.043}\)

\(2.22526959 \ mol \ CH_4\)

The original measurement given, 35.7 grams, has 3 significant figures (3, 5, and 7), so we must round to 3 sig figs.

For this number, it is the hundredth place.

The 5 in the thousandth place tells us to round the 2 to a 3.

\(2.23 \ mol \ CH_4\)

There are about 2.23 moles of CH₄ in 35.7 grams.

Answer:  131 g of bromine is required.

Explanation:

The balanced equation will be :

\(2AlCl_3+3Br_2\rightarrow 2AlBr_3+3Cl_2\)

To calculate the moles, we use the equation:

\(\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}\)

moles of \(AlCl_3\)

\(\text{Number of moles}=\frac{72.4g}{133g/mol}=0.544moles\)

According to stoichiometry :

2 moles of \(AlCl_3\) require  = 3 moles of \(Br_2\)

Thus 0.544 moles of \(AlCl_3\) require=\(\frac{3}{2}\times 0.544=0.816moles\)  of \(Br_2\)

Mass of \(Br_2=moles\times {\text {Molar mass}}=0.816moles\times 160g/mol=131g\)

Thus 131 g of bromine is required.

kilogram

because a kilogram tells you how much the amount and the masd

Answer:

mass

Explanation:

mass is the amount of matter present in object

Since water has a high specific heat, that results in water being able to store/require more energy in order to change it’s temperature. Since San Francisco is so close to water, that would mean that it’s temperature should vary less since water would be able to keep the temperature around the same value even if there was an increase or decrease in thermal energy.  

Answer:

Copper turns green on exposure to air

Explanation:

Liquid water freezes to form ice: Physical change

Reason: Water can melt back when it becomes ice.

Copper turns green on exposure to air: Chemical change

Reason: The copper can not change back from the green state when it turns green.

Temperature, pH, PCO2, and 2,3 diphosphoglycerate are some of the variables that affect how oxygen binds to hemoglobin.

The oxygen dissociation curve moves to the right and Hb's affinity for O2 decreases as its temperature rises. The oxygen Hb dissociation curve changes to the right as the partial pressure of carbon dioxide rises, increasing the P50 value. As a result of greater Hb binding to carbon dioxide, Hb has a lower affinity for oxygen.

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Ruthenium exists a chemical element with the symbol Ru and atomic number 44.  The electron configuration of Ru is 5s14\(d^{7}\).

Ruthenium exists a chemical element with the symbol Ru and atomic number 44.  The electron configuration of Ru is 5s14\(d^{7}\).

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Answer: all mass takes up space. everything has mass. Theres a unit of mass called a slug thats not the bug!

Explanation:

Answer:

Cell division

Explanation:

the complementary strands of DNA formed during cell division

Williamson ether synthesis would give a poor yield of product as the halide is on a 2° carbon. is true about the synthesis of 1-isopropoxy-1-methylcyclopentane.

The Williamson ether synthesis is a method for the synthesis of ethers using an alcohol and an alkyl halide. The reaction proceeds through a nucleophilic substitution mechanism and the ether product is obtained with the alcohol and halide groups in the anti-Markovnikov orientation. The reactivity of the alkyl halides used in this reaction follows the order: primary > secondary >> tertiary. Therefore, the reaction of a secondary halide such as 2° carbon halide will give a poor yield of product as the reactivity of 2° carbon halide is less compared to primary halide. As a result, the reaction is less efficient and the yield of the product is lower.

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\(KCl(ag) + AgNO_3(aq)\) → \(KNO_3(aq) + AgCl(s)\) is the precipitation reactions.

A precipitate is an insoluble substance. A reaction in which insoluble solid precipitate is formed is called Precipitation Reaction.

For example, When Sodium Sulphate solution is mixed with Barium Chloride solution It forms Barium Sulphate and Sodium Chloride solution.

Precipitation reactions are usually double displacement reactions involving the production of a solid form residue called the precipitate.

These reactions also occur when two or more solutions with different salts are combined, resulting in the formation of insoluble salts that precipitate out of the solution.

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Approximately 2.22 x \(10^2^5\) molecules of nitrogen and 6.29 x \(10^2^4\)molecules of oxygen are present in the International Space Station (ISS). If the oxygen and CO2 scrubber system fails, four astronauts on the ISS have approximately 73 hours before the air becomes unbreathable and they risk losing consciousness.

First, we convert the volume of the ISS to liters: 932 \(m^3\) = 932,000 liters.

Next, we calculate the number of moles of each gas using the ideal gas law equation. The pressure is given as 1 atm, and the temperature is 293 K.

For nitrogen:

PV = nRT

(1 atm)(932,000 L) = n(0.0821 L·atm/(mol·K))(293 K)

n ≈ 2.93 x \(10^4\) moles

For oxygen:

PV = nRT

(1 atm)(932,000 L) = n(0.0821 L·atm/(mol·K))(293 K)

n ≈ 8.29 x \(10^3\) moles

Finally, we convert the number of moles to the number of molecules by multiplying by Avogadro's number (6.022 x \(10^2^3\) molecules/mol).

For nitrogen:

2.93 x \(10^4\) moles × 6.022 x \(10^2^3\) molecules/mol ≈ 2.22 x \(10^2^5\) molecules

For oxygen:

8.29 x \(10^3\) moles × 6.022 x \(10^2^3\) molecules/mol ≈ 6.29 x \(10^2^4\) molecules

Therefore, approximately 2.22 x \(10^2^5\) molecules of nitrogen and 6.29 x \(10^2^4\) molecules of oxygen are present in the ISS.

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Answer:

False, assuming this is a true/false question.

Explanation:

Energy is converted from one form to another, not destroyed nor created.  The suns' energy comes for energy released in nuclear reactions. Energy consumed is converted to another form, such as plant and animal sugars and carbohydrates, where it is stored in the bonds among the elements.

Correct question is;

Resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If the percentage errors in the measurement of the current and the voltage difference are 3% each, then error in the value of resistance of the wire is?

Answer:

6%

Explanation:

From ohms law, we know that;

R = V/I

Where;

R is resistance

V is voltage

I is current

Now, the percentage error in the resistance is given by the formula;

ΔR/R = ΔV/V+ ΔI/I

We are told that the current and the voltage difference have a percentage error of 3% each. Thus;

ΔR/R = 3% + 3% = 6%

After 3.96 seconds, 0.549 mol/l of the compound is left. The rate constant of a reaction indicates how quickly reactants are being converted into products.

In this case, a rate constant of 0.0735 sec-1 means that 0.0735 moles of the compound react per second. To determine how much of the compound is left after 3.96 seconds, we can use the following equation:

ln([A]/[A]₀) = -kt

Where [A] is the concentration of the compound at time t, [A]₀ is the initial concentration (0.969 mol/l), k is the rate constant (0.0735 sec-1), and t is time (3.96 seconds).

Solving for [A], we get:

[A] = [A]₀ e^(-kt)

Plugging in the values, we get:

[A] = 0.969 mol/l e^(-0.0735 sec-1 * 3.96 sec)

[A] = 0.549 mol/l

Therefore, after 3.96 seconds, 0.549 mol/l of the compound is left.

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Answer:

could you explain the question further

A firework specialist would be required to be knowledgeable in inorganic chemistry, according to the statement.

In contrast to charcoal, which is a manmade product made from wood, coal is a naturally occurring mineral that develops over the course of millions of years. Even though coal in its natural condition is never used by itself in a grill or smoker, it is frequently added onto charcoal briquettes to boost their energy density.

As an acute pro government treatment, it is now most frequently used in healthcare setting to treat drug overdoses. Other advantages of activated charcoal are claimed to include less wind and flatulence, decreased cholesterol levels, and enhanced renal function.

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Given that the wavelength of the radiation emitted by a mercury lamp is 4.36 x 10^-7 m

We need to find the wavelength in cm and in A. Wavelength in cm:

To convert meters to centimeters, we need to multiply the value by 100.

Therefore, the wavelength in cm is 4.36 x 10^-7 m x 100 cm/m

= 4.36 x 10^-5 cm.

Wavelength in A:

To convert meters to angstroms, we need to multiply the value by 1 x 10^10.

Therefore, the wavelength in A is 4.36 x 10^-7 m x 1 x 10^10 A/m

= 4,360 A.

Calculate the frequency of this radiation:

The speed of light, c = 3 x 10^8 m/s.

The formula to calculate the frequency of radiation is:

f = c/λ

Where f = frequency,

c = speed of light,

and λ = wavelength

Therefore, f = (3 x 10^8 m/s)/(4.36 x 10^-7 m)

= 6.87 x 10^14 Hz.

In what region of the electromagnetic spectrum is this radiation?

The range of wavelengths for electromagnetic radiation is enormous, from as long as the universe to as short as the nucleus of an atom.

Gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, microwaves, and radio waves are all part of the electromagnetic spectrum.

Visible light is the radiation emitted by the mercury lamp. Therefore, this radiation is in the visible light region of the electromagnetic spectrum.

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