CCC Energy and Matter Construct an explanation for why convection in orbit around Earth—for example, aboard the International Space Station—would be impossible.

Answer:

mass matter

Explanation:

Answer:

i think its c somebody correct me if im wrong. but hope this help

Explanation:

A property of water is that it requires less heat than ethanol to raise its temperature.

Among the given options, the property of water that stands out is that it requires less heat than ethanol to raise its temperature. This property is known as the high specific heat capacity of water.

Water has a relatively high specific heat capacity compared to many other substances, including ethanol.

This means that it takes a larger amount of heat energy to raise the temperature of water compared to ethanol for the same mass of the substance.

The high specific heat capacity of water is attributed to hydrogen bonding between water molecules.

These hydrogen bonds result in a significant amount of energy being required to break the intermolecular forces and raise the temperature of water. As a result, water can absorb and store a considerable amount of heat energy without undergoing a significant temperature change.

In contrast, ethanol has a lower specific heat capacity, meaning it requires less heat energy to increase its temperature compared to water.

This property of water plays a vital role in regulating Earth's temperature and climate, as water bodies can absorb and release heat energy, helping to moderate temperature changes in the environment.

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The time required for a reaction to reach equilibrium can depend on the value of Kc, which represents the equilibrium constant. The equilibrium constant, Kc, is determined by the concentrations of the reactants and products at equilibrium.

In general, reactions with a larger Kc value tend to reach equilibrium more quickly than those with a smaller Kc value. This is because a larger Kc indicates that the concentration of products is higher compared to the concentration of reactants at equilibrium. As a result, the reaction proceeds more rapidly to reach the point where the ratio of products to reactants matches the value of Kc.

Therefore, among the given options, the answer would be option (c) where Kc is a very large number. In this case, the reaction would require the least amount of time to reach equilibrium.

It's important to note that the actual time required for a reaction to reach equilibrium depends on various factors such as temperature, pressure, and the presence of catalysts. Additionally, the time required for a reaction to reach equilibrium cannot be determined solely based on the value of Kc. However, in general, a larger Kc value suggests a quicker attainment of equilibrium.

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If we a 1.5 volt battery is replaced by a 3 volts battery, the current in the circuit will double

From Ohm's law,

Voltage (V) = Current (I) × resistance (R)

V = IR

If R is constant, we have:

V / I = R

V₁ / I₁ = V₂ / I₂

Where

Now, we shall determine the current when the voltage is 3 volts. Detials below:

V₁ / I₁ = V₂ / I₂

1.5 / I = 3 / I₂

Cross multiply

1.5 × I₂ = I × 3

Divide both side by 1.5

I₂ = ( I × 3) / 1.5

I₂ = I ×2

Thus, we can conclude that the current will double

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Answer:

51.79g Li₃P.

Explanation:

Li has a molar mass of 6.94 g (since there are 3, you multiply it 3 times) and P has a molar mass of 30.97 g. 6.94(3) + 30.97 = 51.79g.

The volume of dry hydrogen gas at standard atmospheric pressure (which is typically defined as 1 atm or 101.325 kPa) depends on the number of moles of hydrogen gas present. The ideal gas law, PV = nRT, relates the pressure (P), volume (V), number of moles (n), and temperature (T) of an ideal gas. Assuming standard temperature and pressure (0°C and 1 atm), one mole of any ideal gas occupies a volume of 22.4 L. Therefore, to find the volume of dry hydrogen gas at standard atmospheric pressure, we need to know how many moles of hydrogen gas we have.

For example, if we have 1 mole of dry hydrogen gas at standard atmospheric pressure, the volume would be 22.4 L. If we have 0.5 moles of dry hydrogen gas, the volume would be 11.2 L. And so on.

The correct answer is the amount of sodium chloride needed to make this eye solution isotonic with tears is approximately 1.85 grams. Rounding it up to the nearest whole number gives us the answer as 2. Hence, the correct option is 22.

The given solution is a hypotonic solution as the solution's tonicity is lower than that of the tears. The tears contain 0.9% w/v of NaCl, which is isotonic with tears. So, to make the given solution isotonic, the amount of sodium chloride needs to be added.

The concentration of NaCl in tears is 0.9% w/v. Additional Information: We know that % w/v is the amount of solute present in grams per 100 ml of the solution. Therefore, 0.9% w/v means 0.9 grams of NaCl is present in 100 mL of tears.

To make 30 ml of isotonic solution, we can use the following formula: Equivalent weight of NaCl = 58.5/2 = 29.25 (as NaCl ionizes to give Na+ and Cl- ions)Moles of NaCl required to make 30 ml isotonic solution = 0.9 × 30 / 1000 = 0.027Moles of Na+ and Cl- ions present in 30 mL of isotonic solution = 2 × 0.027 = 0.054

A number of grams of NaCl needed to prepare 30 mL of isotonic solution is calculated as follows:0.054 g = (0.027 x 29.25 x X) / 1000Where X is the amount of NaCl required to make 30 mL isotonic solution. Solving this equation gives us: X = 1.85 g (approx). Therefore, the amount of sodium chloride needed to make this eye solution isotonic with tears is approximately 1.85 grams. Rounding it up to the nearest whole number gives us the answer as 2. Hence, the correct option is 22.

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The equations for each of these nuclear reactions can be given as

98Mo + 1n -> 99Mo

99Mo -> 99Tc* + β

99Tc* -> 99Tc + γ

99Tc -> 99Ru + β

The nuclear reactions involved in the preparation of Technetium-99 from Molybdenum-98 can be represented as follows:

1. Molybdenum-98 captures a neutron to form Molybdenum-99:

98Mo + 1n -> 99Mo

In this reaction, Molybdenum-98 (98Mo) combines with a neutron (1n) to produce Molybdenum-99 (99Mo).

2. Molybdenum-99 undergoes beta decay to form excited Technetium-99:

99Mo -> 99Tc* + β

In this reaction, Molybdenum-99 (99Mo) decays by emitting a beta particle (β), resulting in an excited state of Technetium-99 (99Tc*).

3. Excited Technetium-99 relaxes to the ground state by emitting a gamma ray:

99Tc* -> 99Tc + γ

In this reaction, the excited state of Technetium-99 (99Tc*) releases excess energy in the form of a gamma ray (γ), transitioning to the ground state of Technetium-99 (99Tc).

4. Ground state Technetium-99 undergoes beta decay:

99Tc -> 99Ru + β

In this reaction, ground state Technetium-99 (99Tc) decays by emitting a beta particle (β), resulting in Ruthenium-99 (99Ru).

These equations represent the series of nuclear reactions involved in the production of Technetium-99 from Molybdenum-98, including neutron capture, beta decay, and gamma ray emission.

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Answer:

aluminum

no aluminum is left over

Explanation:

the next answers for step 7 are 0.019, 0.0093, aluminum

Answer:

Aluminum because no aluminum is left over

Explanation:

In the given bend on the topographic map, 1. is Downstream and 2. is Upstream.

The stream can be described as the moving water in a river is called a stream. Upstream can be described as if the water is flowing in the opposite direction to the stream, it is known as upstream.

Downstream can be described as flowing along the direction of the stream, it is known as downstream.

Still water can be described as under this circumstance the water is stationary and the speed of the water is equal to zero.

All rivers flow downhill from higher elevations to lower elevations and perpendicular to the contour line. As a rule of thumb, the V-shaped contour is representing upstream.

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Explanation:

decrease since the photons have to travel through a cloudier substance

Answer:

B2

Explanation:

"+" contains positivity

Answer:

D. Density is defined as mass/volume.

Answer:

I think he was right but not explaining

Explanation:

I think it is C cause.... the volume of a material is the amount of matter that matterial can hold. it should the the amount of space the whole material takes up.

so C is the answer.

pls make this the brainliest.

not because it is, but because I asked.

Copper (II) ion is likely to be present if the initial metal sulfide precipitate is black with traces of yellow.

Copper (II) sulfide is black in color, which matches the color of the initial precipitate. However, when exposed to air, copper (II) sulfide can partially oxidize to form copper (II) oxide, which is yellow in color. Therefore, traces of yellow in the precipitate indicate the presence of copper (II) ion. Tin (IV) ion, lead (II) ion, and bismuth (II) ion do not form black sulfides, and therefore cannot be the cause of the initial precipitate. Copper (II) ion is likely to be present if the initial metal sulfide precipitate is black with traces of yellow.

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The pH of the solution will be 10.47.

The pH of a solution is mathematically given as:

 pH = - log [\(H^+\)] of -log [\(H_3O^+\)]

Thus, in this case, with  [\(H_3O^+\)]  of 3.4 x 10-¹¹ M:

pH = -log 3.4 x \(10^-^1^1\) = 10.47

Thus, the pH of the solution will be 10.47.

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Explanation:

Mole ratio of H2SO4 to NaOH = 1 : 2.

Moles of NaOH

= Moles of H2SO4 * (2/1)

= 23.1mol * (2/1)

= 46.2mol. (A)

The concentration of bicarbonate ions in the plasma is dependent on the partial pressure of carbon dioxide (pCO2) according to the below equilibrium reaction and a mechanism that helps regulate the acid-base balance of the body.

The equation is CO2 + H2O ⇌ H2CO3 ⇌ HCO3- + H+

This reaction is catalyzed by the enzyme carbonic anhydrase, which is present in red blood cells. An increase in pCO2 will shift the equilibrium to the right, increasing the concentration of carbonic acid (H2CO3), which will increase the concentration of bicarbonate ions (HCO3-) and hydrogen ions (H+) in order to maintain the equilibrium.

As hydrogen ions increase, the pH of the plasma will decrease. Therefore, an increase in pCO2 will lead to a decrease in pH and an increase in the concentration of bicarbonate ions in the plasma. Conversely, a decrease in pCO2 will shift the equilibrium to the left, decreasing the concentration of bicarbonate ions and increasing the pH of the plasma.

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Answer:

17 kJ/mol

Explanation:

got it on edge

The structural formula of the coordination complex, [Pt(NH3)3(NO2)]+, for each linkage isomer is shown below.

Structure 1: [Pt(NH3)3(NO2-O)]+ Structure 2: [Pt(NH3)3(NO2-N)]+

Linkage isomerism is a type of structural isomerism that results from the reversible interchange of a ligand between two or more coordination sites of the metal ion in a complex. It is a form of structural isomerism in which a ligand bonds to the central atom in a different way resulting in the formula of the compound being the same, but the spatial arrangements of the atoms differ. When a compound displays linkage isomerism, the ligand involved in the isomerism is called the ambidentate ligand.

Ambidentate ligands are ligands that can bond to a metal ion through two different atoms. For example, the nitrite ion, NO2-, can coordinate to a metal ion through the nitrogen atom or the oxygen atom. Hence, NO2- is an ambidentate ligand.

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36.38 ml of a 0.167 M potassium hydroxide solution is required to neutralize 16.6 mL of a 0.366 M nitric acid solution.

Given that 16.6 mL of a 0.366 M nitric acid solution is neutralized by 0.167 M potassium hydroxide solution.

The balanced equation for the reaction is:

HNO₃ + KOH → KNO₃ + H₂O

From the equation given above,

Mole ratio of the acid, HNO₃ (nA) = 1

Mole ratio of the base, KOH (nB) = 1

From the question:

Molarity of the acid, HNO₃ (Ma) = 0.366 M

Volume of the base, KOH (Vb) =

Molarity of the base, KOH (Mb) = 0.167 M

Volume of the acid, HNO₃ (Va) = 16.6 ml

Now,

MaVa/ MbVb = nA/nB

0.366 × 16.6 / 0.167 × Vb = 1/1

6.0756 = 0.167 × Vb

Vb = 36.38 ml

Therefore, 36.38 ml of potassium hydroxide solution is required for the reaction.

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Answer:

Explanation:

The new volume can be found by using the formula for Boyle's law which is

\(P_1V_1 = P_2V_2\)

From the question we have

\(V_2 = \frac{P_1V_1}{P_2} \\\)

From the question we have

\(V_2 = \frac{40 \times 20}{80} = \frac{800}{80} = 10 \\ \)

We have the final answer as

hope this helps you

Answer:8

in the respiratory system

a.

Explanation:

Answer:

Mass number

Explanation:

All atoms of the same element have the same number of protons, but some may have different numbers of neutrons, which would cause a different mass number

Answer:

The answer is mass number

Answer:

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

Explanation:

Answer:

Helium

Explanation:

idrk because it has a more carbinic bond

The most likely true statement about the mechanical behavior of an hcp metal versus a bcc metal is that the hcp metal is likely more ductile than the bcc metal because its slip planes are close-packed while the bcc metal's slip planes are not.

This is because close-packed slip planes allow for easier movement of dislocations, which results in higher ductility. However, it is important to note that the mechanical behavior of metals is dependent on many factors such as temperature, stress, and strain rate, and so this statement may not always hold true.
In general, ductility is influenced by the number of available slip systems in a metal's crystal structure. BCC metals tend to have more intersecting slip systems, which allow for more deformation before failure, resulting in higher ductility. On the other hand, HCP metals usually have fewer slip systems and thus tend to be less ductile.

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Answer

b

Explanation:

because I took the test

Each hydrogen shares two electrons with nitrogen.

NH3 is a molecular compound. In molecular compounds, electrons are shared between the bonding atoms in a covalent bond. The number of electrons shared between atoms depends on the respective valencies of the combining atoms.

Nitrogen has a valency of three and hydrogen has a valency of one. Therefore, in NH3, each hydrogen shares two electrons with nitrogen.

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Answer:

2.2876e+24 or 2.2876000000000000000000000000 (same thing)

Explanation:

First we can do the exponents first

When there is an exponent on top of a number, it means that we need to multiply that number by the amount that the exponent says by itself.

10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 = .....

1E24 or 1,000,000,000,000,000,000,000,000

1,000,000,000,000,000,000,000,000 × 1.204 = ......

2.2876e+24 or

2.2876000000000000000000000000

~ 2.2876 r 2.288 or 2.28, or 2.3

Depends on how much you want to round it up to.