During electron transport, energy from _____ is used to pump hydrogen ions into the _____.

Answer: Yes, sulfuric acid is highly soluble in water.

Explanation:

Answer:

Inertia.

Explanation:

The resistance of any physical object to any change in its velocity. This includes changes to the object's speed, or direction of motion. An aspect of this property is the tendency of objects to keep moving in a straight line at a constant speed, when no forces act upon them.

We have that for the Question "How can the motion of an object that is NOT moving change?" it can be said that Force is the reason for motion and is how can the motion of an object that is NOT moving change

From the question we are told

How can the motion of an object that is NOT moving change?

Generally

Motion defines as the movement of a body from one place to another

Therefore

What the question is asking is

What makes the movement occur

Force

Force is defines as Mass of of an object times its acceleration but aslo is

the work done in a given time frame

Therefore

Force is the reason for motion and is how can the motion of an object that is NOT moving change

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Answer:

Lithium ions are smaller than lithium atoms. This is because the lithium atom has 2 shells, while the ion just has one shell. Bromide ions are larger than bromine atoms, due to increased inter-electronic respulsion.

Explanation:

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Answer:

chemical reaction is described by a chemical A equation, an expression that gives the identities and quantities of the substances involved in a reaction. A chemical equation shows the starting compound(s)—the reactants—on the left and the final compound(s)—the products—on the right, separated by an arrow.In a chemical change, the molecules in the reactants interact to form new substances. ... When an equation of a chemical reaction is written, it is “balanced” and shows that the atoms in the reactants end up in the products and that no new atoms are created and no atoms are destroyed.

1.  the final concentration of NaOH after adding 125 mL of water to 45.3 mL of 0.71 M NaOH solution is approximately 0.189 M.

2.  the final concentration of KOH after adding 550 mL of water to 125 mL of 3.01 M KOH solution is approximately 0.557 M.

1.) If 125 mL of water is added to 45.3 mL of a 0.71 M NaOH solution, the resulting solution will be a diluted NaOH solution. The addition of water will increase the total volume while reducing the concentration of NaOH. To determine the final concentration of NaOH, we need to consider the conservation of moles.

First, let's calculate the moles of NaOH in the initial solution:

moles of NaOH = volume (in L) × concentration (in M)

moles of NaOH = 0.0453 L × 0.71 M = 0.0321433 moles

After adding 125 mL (0.125 L) of water, the total volume of the solution becomes 0.0453 L + 0.125 L = 0.1703 L.

To find the final concentration, we divide the moles of NaOH by the total volume:

final concentration of NaOH = moles of NaOH / total volume

final concentration of NaOH = 0.0321433 moles / 0.1703 L ≈ 0.189 M

Therefore, the final concentration of NaOH after adding 125 mL of water to 45.3 mL of 0.71 M NaOH solution is approximately 0.189 M.

2.) If 550 mL of water is added to 125 mL of a 3.01 M KOH solution, the resulting solution will also be a diluted solution. Again, we will apply the conservation of moles to determine the final concentration of KOH.

First, calculate the moles of KOH in the initial solution:

moles of KOH = volume (in L) × concentration (in M)

moles of KOH = 0.125 L × 3.01 M = 0.37625 moles

After adding 550 mL (0.55 L) of water, the total volume of the solution becomes 0.125 L + 0.55 L = 0.675 L.

To find the final concentration, divide the moles of KOH by the total volume:

final concentration of KOH = moles of KOH / total volume

final concentration of KOH = 0.37625 moles / 0.675 L ≈ 0.557 M

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Answer:

0.00944

Explanation:

Xenon mass number on the periodic table: 131.29

Oxygen mass number: 16.00

Add them to find the molar mass of xenon trioxide: 131.29+3(16) = 179.29g/mol

Convert this to moles

\(1.69g * \frac{mol}{179.29g} = 0.00944mol\)

The cultures of prehistoric humans are primarily known through the excavation of stone tools and other durable artifacts, such as the Oldowan and Acheulian tool traditions.

Stone tools and imperishable artifacts serve as key archaeological evidence for understanding prehistoric cultures. Through meticulous excavation and analysis, archaeologists have been able to piece together the lifestyles, technological advancements, and social behaviors of early human societies. The term "paleolithic" refers to the Old Stone Age, a time when humans relied on stone tools as their primary implements.

The Oldowan tool tradition is considered the earliest stone tool industry, dating back around 2.6 million years ago. It is characterized by simple tools, such as choppers and scrapers, which were crafted by flaking off pieces from larger stones. These tools were primarily used for basic activities like butchering and processing animal carcasses.

Later, the Acheulian tool tradition emerged around 1.76 million years ago, representing an advancement in stone tool technology. Acheulian tools, such as handaxes and cleavers, were more refined and standardized, showcasing an increased level of sophistication in tool-making techniques. These tools served a wide range of purposes, including hunting, woodworking, and shaping raw materials.

By studying the Oldowan and Acheulian tool traditions, researchers gain valuable insights into the cognitive abilities, cultural development, and technological progress of early humans. The examination of these artifacts provides evidence of their adaptability, problem-solving skills, and the gradual refinement of their tool-making techniques over time.

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AThe half-life of an isotope is the amount of time it takes for half of the atoms in a sample to decay. If the half-life of a sample of uranium-234 is 2.5 * 10^5 years, it means that after 2.5 * 10^5 years, half of the atoms in the sample will have decayed.

If you want to know how long it will take for only one sixth of the original mass to be left, you can use the following formula:

t = (half-life) * log(2) / log(1/6)

Plugging in the values, we get:

t = (2.5 * 10^5 years) * log(2) / log(1/6)

This simplifies to:

t = 3.7 * 10^5 years

So it will take approximately 3.7 * 10^5 years for only one sixth of the original mass to be left.nswer:

Answer:

Anticline

Other than that Just A C:

Explanation:

Answer:

A

Explanation:

Answer:

1 and 4

Explanation:

It would take approximately 0.144 hours to produce 7.5 moles of copper metal using the given current and cell potential.  

To produce 7.5 moles of copper metal from an electrolytic cell, we can use the following equation:

moles of copper produced = moles of Cu produced

here:

moles of Cu produced is the number of moles of Cu that are produced as the Cu ions dissolve in the solution and move towards the cathode.

We are given that the current passed through the cell is 50.0 A and the cell potential is 2.50 V. Therefore, we can calculate the number of moles of Cu produced using the following equation:

moles of Cu produced = -50.0 A x 2.50  x time

To find the time required to produce 7.5 moles of copper, we can rearrange the equation as follows:

time = -moles of Cu produced / (50.0 A x 2.50 V)

time = -7.5 moles / (50.0 A x 2.50 V)

time = 0.144 hours

Therefore, it would take approximately 0.144 hours to produce 7.5 moles of copper metal using the given current and cell potential.  

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After being mixed with 50.0 L of NaCl solution, the KOH solution's final molarity is 0.45 M.

We can apply the principle of dilution to ascertain the ultimate molarity of the KOH solution. The dilution equation is:

M₁V₁ = M₂V₂

Where:

M1 is the solution's initial molarity (KOH).

V1 is the solution's starting volume (in KOH).

M2 is the solution's final molarity (KOH).

V2 is the solution's total volume (in KOH).

Given:

Initial KOH solution volume (V1) is 10.0 L.

KOH solution's initial molarity (M1) is 2.7 M.

After incorporating NaCl solution, the KOH solution's final volume (V2) equals 10.0 L plus 50.0 L, or 60.0 L.

These values are substituted in the dilution equation:

(2.7 M)(10.0 L) = (M₂)(60.0 L)

27.0 = 60M₂

Calculating M2:

M₂ = 27.0 / 60 = 0.45 M

Therefore, after adding 50.0 L of NaCl solution, the KOH solution's final molarity or molar concentration is 0.45 M.

It's vital to note that this estimate is based on the supposition that the quantities are additive and that NaCl and KOH do not react. Furthermore, no departures from ideal behaviour are taken into consideration in this calculation, which is predicated on perfect behaviour.

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Answer:

only the atoms present in the reactants can end up in the products.

Explanation:

Answer:

a

Explanation:

i hope i am right

Answer:

5.55 L

Explanation:

This excersise can be solved by the Boyle's law.

This law for gases states that the pressure of a gas in a vessel is inversely proportional to the volume of the vessel.

P₁ . V₁  = P₂ . V₂

The law comes from the Ideal Gases Law, in the first term.

P . V = n . R . T  In this case, n . R . T are all constant.

6.35 L . 88.6 kPa = 101.3 kPa . V₂

V₂ = (6.35 L . 88.6 kPa) / 101.3 kPa

V₂ = 5.55 L

It is inversely proportional because, as it happened in this case, pressure was increased, therefore volume decreased.

Answer:

Because something that experiences change in magnitude or the direction of the velocity is said to be acceleration .

Explanation:

Yes, it is possible to calculate the heat of sublimation for a substance if its heats of vaporization and heats of fusion are given.

The molar heat (or enthalpy) of sublimation is defined as the amount of energy that must be added to a mole of solid at constant pressure to turn it directly into a gas (without passing through the liquid phase).

Sublimation requires all the forces which breaks all types of bonds between the molecules (or other species, such as ions) in the solid as the solid is converted into a gas. The heat of sublimation is basically expressed as  ΔHsub  in units of Joules per mole or kilogram of substance.

The relation between heat of sublimation, heats of vaporization and heats of fusion is given as,

ΔHsub = ΔHfus + ΔHvap

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The concentration of H+ ions in the solution is the same as the concentration of H3O+ ions, which we have calculated to be 7.61 x 10^(-9) mol/L.

To calculate the concentration of H3O ions present in a solution of HCl that has a measured pH of 8.110, we need to use the equation pH = -log[H3O+]. Rearranging the equation, we get [H3O+] = 10^(-pH).
Substituting the given pH value of 8.110, we get [H3O+] = 10^(-8.110) = 7.61 x 10^(-9) moles per liter (mol/L).
Therefore, the concentration of H3O ions present in the solution is 7.61 x 10^(-9) mol/L. This means that the solution is basic since the pH is greater than 7, and there are very few H3O+ ions present in the solution.
It is important to note that HCl is a strong acid and completely dissociates in water, meaning that all of the HCl molecules have broken apart into H+ and Cl- ions. The H+ ions then react with water molecules to form H3O+ ions. Thus, the concentration of H+ ions in the solution is the same as the concentration of H3O+ ions, which we have calculated to be 7.61 x 10^(-9) mol/L.

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Answer:leeeeeee

Explanation:

Scandium nitrate are Sc(NO3)3 ionic compound.

Using Type III binary compound criteria, compounds that only contain non-metal components are called. In contrast to ions, which have charges, these molecules are always neutral and only include two elements (for compounds that contain only non-metal elements but more than two elements, see the acid naming section below).

The ionic compound sodium chloride, on the other hand, includes ions. Ionic compounds are made of ions and are held together by the attraction interactions between the ions with opposing charges. The most popular ionic substance is table salt (sodium chloride).

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A proton (q = 1.6x10-19 c) travels 10 cm along a constant e-field (3.0 v/m). The proton has changed its kinetic energy by 4.8 x 10-20 J after travelling 10 cm in the electric field.

The equation: may be used to determine the change in kinetic energy of a charged particle travelling in an electric field. K = qEd, where q is the particle's charge (1.6 x 10-19 C), E is the intensity of the electric field (3.0 V/m), and d is the distance travelled (10 cm).

Since the electric field is expressed in volts per metre, we must first convert the distance from centimetres to metres. 10 cm = 0.10 m.

After that, we can enter the values into the equation and find K:

K = qEd = 4.8 x 10-20 J = (1.6 x 10-19 C)(3.0 V/m)(0.10 m)

The proton's kinetic energy changes by 4.8 × 10-20 J after travelling 10 cm in the electric field.

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The standard enthalpy change for reaction (3) is 117.1 kJ.

The standard enthalpy change for reaction (3) can be calculated by using the enthalpy changes of reactions (1) and (2) and applying Hess's Law.

To do this, we need to manipulate the given equations so that the desired reaction (3) can be obtained.

First, we reverse reaction (1) to get the formation of C2H4(g) from C2H6(g):

C2H4(g)C2H6(g) ΔH° = -52.3 kJ

Next, we multiply reaction (2) by 2 and reverse it to obtain 2 moles of C2H6(g) reacting to form 3 moles of H2(g):

2C2H6(g)2C(s) + 3H2(g) ΔH° = 169.4 kJ

Now, we add the two modified equations together:

C2H4(g)C2H6(g) ΔH° = -52.3 kJ
2C2H6(g)2C(s) + 3H2(g) ΔH° = 169.4 kJ

When adding these equations, the C2H6(g) on the left side cancels out with the C2H6(g) on the right side, leaving us with the desired reaction (3):

C2H4(g) + H2(g)C2H6(g) ΔH° = -52.3 kJ + 169.4 kJ = 117.1 kJ

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Before its activity is lowered to 16.0 mci, it will take 47 days. A medical supply store buys a radioactive isotope sample with a 172.0-mci sample. The term "radioisotope" refers to an element's radioactive form.

which consists of atoms with unstable nuclei that undergo radioactive decay to stable forms, producing distinctive alpha, beta, or gamma radiation. Radioisotopes are an element's radioactive isotopes. They are the atoms with unstable neutron-proton combinations or excess energy in their nuclei. During those processes, the radionuclide is said to experience radioactive decay, albeit the surplus energy may be put to use in any number of ways. one of two or more atoms with a nuclear makeup that has a different amount of neutrons than protons but the same number of protons overall.

t = - ln(R/Ro)/lamda

t = -14 (ln(16/172)/ln2

t = 47 days.

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Answer:

1802

Explanation:

 Humphry Davy invented the first electric light

Answer:

1806

Explanation:

The very first light bulb was not invented by Thomas Edison, but by British inventor Humphry Davy in 1806. His devices created an arc of electricity between electrodes, creating a very bright light. While far too dangerous to use at home, they were used in public spaces and commercially.

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The valproic acid contains 0.0645 milligrams

1000 microgram = 1 milligram

From the question given, the following data were obtained:

We can convert 64.5 micrograms to milligrams as illustrated below:

1000 microgram = 1 milligram

Therefore,

64.5 micrograms = (64.5 micrograms × 1 milligram) / 1000 microgram

64.5 micrograms = 0.0645 milligrams

Thus, the valproic acid contains 0.0645 milligrams

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Answer:

4NO + 6H2O = 4NH3 + 5O2

Explanation:

Think about it this way: there are 4N's 4O's and 12H's and 10O's on both sides that's what makes it balanced

Hope this helps :)

Answer:

B

Explanation:

Trust me I've had problems like these

We'll begin by calculating the mass in ounce (oz) of a cube foot (ft³) of gold. This can be obtained as follow:

Density of gold = 19298 oz/ft³

Volume of gold = 1 ft³

Density = mass /volume

19298 = mass / 1

Finally, we shall determine the cost of 19298 oz of gold. This can be obtained as follow:

1 oz = $ 1600

Therefore,

19298 oz = 19298 × 1600

19298 oz = $ 30876800

Therefore, a solid cube foot of gold (i.e 19298 oz) will cost $ 30876800

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The specific surface area per mL is 251 m²/mL, and the specific surface area per gram is 251 m²/g.

To calculate the specific surface area per mL and per gram accurately, we need to consider the dimensions and units properly.

Given:

Granule size: 5 micrometers

Density: 2 g/mL

First, let's calculate the surface area of a single granule. The surface area of a sphere is given by the formula:

Surface area = 4πr²

where r is the radius of the sphere.

The radius of a granule is half of its diameter, so the radius would be 2.5 micrometers (0.0025 mm).

Surface area of a single granule = 4π(0.0025 mm)² = 4π(6.25 × 10^(-9) mm²) = 3.14 × 10^(-8) mm²

Next, let's calculate the number of granules in 1 mL and 1 gram of the sample.

1 mL of the sample has a volume of 1 mL, and since the density is 2 g/mL, the mass of 1 mL of the sample is 2 grams.

Number of granules in 1 mL = (1 mL / 5 micrometers)^3

= (1 mL / (5 × 10^(-3) mm))^3

= (1 × 10^6 mm³ / (5 × 10^(-3) mm))^3

= (2 × 10^5)^3 = 8 × 10^15 granules

Number of granules in 1 gram = (1 gram / 2 grams) × (1 mL / 5 micrometers)^3

= (1 × 10^3 mm³ / (5 × 10^(-3) mm))^3

= (2 × 10^5)^3

= 8 × 10^15 granules

Finally, we can calculate the specific surface area per mL and per gram:

Specific surface area per mL

= Surface area of a single granule × Number of granules in 1 mL

= 3.14 × 10^(-8) mm² × 8 × 10^15

= 2.51 × 10^8 mm²

Specific surface area per gram = Surface area of a single granule × Number of granules in 1 gram = 3.14 × 10^(-8) mm² × 8 × 10^15 = 2.51 × 10^8 mm²

To convert the specific surface area from mm² to m², we divide by 10^6:

Specific surface area per mL = 2.51 × 10^8 mm² / 10^6 = 251 m²/mL

Specific surface area per gram = 2.51 × 10^8 mm² / 10^6 = 251 m²/g

Therefore, the specific surface area per mL is 251 m²/mL, and the specific surface area per gram is 251 m²/g.

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Answer:

36 eggs

Explanation:

12 eggs in each carton

12 + 12 + 12 = 36 eggs

or 3 * 12 = 36 eggs

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