How many centimeters are in 5 miles? Hint: 1 miles = 5280 feet

Answer:

378mL

Explanation:

The following data were obtained from the question:

Pressure (P) = 99.19 kPa

Temperature (T) = 28°C

Number of mole (n) = 0.015 mole

Volume (V) =...?

Next, we shall convert the pressure and temperature to appropriate units. This is illustrated below:

For Pressure:

101.325 KPa = 1 atm

Therefore, 99.19 kPa = 99.19/101.325 = 0.98 atm

For Temperature:

T(K) = T(°C) + 273

T(°C) = 28°C

T(K) = 28°C + 273 = 301K.

Next we shall determine the volume of N2. The volume of N2 can be obtained by using the ideal gas equation as shown below:

PV = nRT

Pressure (P) = 0.98 atm

Temperature (T) = 301K

Number of mole (n) = 0.015 mole

Gas constant (R) = 0.0821atm.L/Kmol.

Volume (V) =...?

0.98 x V = 0.015 x 0.0821 x 301

Divide both side by 0.98

V = (0.015 x 0.0821 x 301) /0.98

V = 0.378 L

Finally, we shall convert 0.378 L to millilitres (mL). This is illustrated below:

1L = 1000mL

Therefore, 0.378L = 0.378 x 1000 = 378mL

Therefore, the volume of N2 collected is 378mL

Answer:

Option B = 60,600 mg  (correct option)

Explanation:

First of all we will have an idea which numbers are consider as significant.

1 = All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.

2= Leading zeros are not consider as a significant figures. e.g. 0.02 in this number only one significant figure present which is 2.

3= Zero between the non zero digits are consider significant like 105 consist of three significant figures.

4= The zeros at the right side e.g 3400 are also significant. There are four significant figures are present.

In given options, Option A 60.6 mg have 3 significant figures.

Option B have 5 significant figures.

Option C have 4 significant figures.

Option D have 3 significant figures.

Thus option b is correct option which have more significant figures.

Answer:

The most accurate way to determine an object's volume, especially in the case of an irregularly shaped object, is to immerse it in water and measure the amount of water it displaces. A graduated cylinder large enough to hold both the object and enough water to fully immerse it is the best tool for this job.

Answer:

radiation

Explanation:

Answer:

neither

Explanation:

Kinetic Energy is the physical movement of objects.

I think the ball has energy but less energy than if it was sitting on the ground because it is farther away from Earth’s surface. Therefore option C is correct.

In order to accomplish labor and to produce heat and light, energy must be transmitted to a body or to a physical systems. Energy is a preserved resource, according to the rule of conservation of energy, energy can only be transformed from one form to another and cannot be generated or destroyed.

Examples of these include, electrical energy, sound energy, chemical energy, nuclear or atomic energy, light energy, heat energy, mechanical energy, gravitational energy, and so on.

Thus, option C is correct.

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Answer:

Logan could explain the lower mass by explaining that the reaction between hydrochloric acid and magnesium produces hydrogen gas, which escapes and therefore is not included in the final combined mass measurement. The reaction is:HCl + Mg → MgCl2 + H2Since the hydrogen gas has mass, its escape from the reaction vessel explains the decrease in the combined mass of the reactants after the reaction.

Answer:

its totally d

Explanation:

The position of the thermometer in a distillation setup can affect the observed boiling point of the liquid being distilled by introducing errors in temperature measurements.

Placing the thermometer too high above the distillation flask can lead to lower temperature readings because the thermometer is not directly in contact with the vaporized liquid. Conversely, placing the thermometer too low can result in higher temperature readings due to exposure to hot surfaces of the distillation apparatus.

Ideally, the thermometer should be positioned at the same level as the vaporized liquid to obtain accurate temperature measurements. Any deviation from this optimal position can affect the boiling point observed and result in an inaccurate characterization of the liquid's properties.

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Answer:

The person’s kinetic energy is 1,025 J

Explanation:

Kinetic energy is a form of energy. It is defined as the energy associated with bodies that are in motion and this energy depends on the mass and speed of the body.

Kinetic energy is defined as the amount of work necessary to accelerate a body of a given mass and in a position of rest, until it reaches a given speed. Once this point is reached, the amount of accumulated kinetic energy will remain the same unless there is a change in speed or the body returns to its state of rest by applying a force.

Kinetic energy is represented by the following formula:

\(Ec=\frac{1}{2}*m*v^{2}\)

where Ec is kinetic energy, which is measured in Joules (J), m is mass measured in kilograms (kg), and v is velocity measured in meters over seconds (m/s).

In this case:

Replacing:

\(Ec=\frac{1}{2}*82 kg*(5\frac{m}{s} )^{2}\)

Solving:

Ec= 1,025 J

The person’s kinetic energy is 1,025 J

The kinetic energy of a person having a mass of 82 kg in an elevator moving at a speed of 5m/s is 1025J

HOW TO CALCULATE KINETIC ENERGY:

K.E = ½ mv²

Where;

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Answer:

C.) Lactobacillus

Explanation:

Is a prokaryote with a simple rod shaped structure. Similar to other prokaryotic bacterium of its shape it has a cell wall, and capsule.

Answer:

C im pretty sure. hope this helps

The answer is c. 8 electrons are in bromine's next to outer shell (n = 3). Therefore, the answer is c. 8 electrons are in bromine's next to outer shell (n = 3).

Bromine has an atomic number of 35, which means it has 35 protons in its nucleus and 35 electrons in its electron cloud. To determine the number of electrons in bromine's next to outer shell (n = 3), we need to look at the electron configuration of bromine. The electron configuration of bromine is: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5

The electrons in the outermost shell (n = 4) are the valence electrons, which are involved in chemical reactions. However, we are interested in the electrons in the next to outer shell (n = 3), which are also important in determining chemical properties. To determine the number of electrons in the next to outer shell, we need to subtract the number of electrons in the outermost shell (n = 4) from the total number of electrons in the atom.

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The partial pressure of helium, He in the tank, given that the tank contains 1.47 mole of O₂ and 5.53 moles of He, is 9.559 atm

To calculate the partial pressure of He in the tank, we must first obtain the mole fraction of He. Details on how to obtain the mole fraction of He is shown below:

Mole fraction of He = Mole of He / total mole

Mole fraction of He = 5.53 / 7

Mole fraction of He = 0.79

Now, we can obtain the partial pressure of He. This is illustrated below:

Partial pressure = mole fraction × total pressure

Partial pressure of He = 0.79 × 12.1

Partial pressure of He = 9.559 atm

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Answer:

Cell

Explanation:

Cell is the smallest and basic unit of life

The balanced oxidation half equation is given below:

Oxidation reactions are reactions in which the oxidation of the species increases.

Oxidation reactions can involve addition of oxygen or electronegative elements to a substance or the removal of hydrogen or electropositive elements from a substance.

The balanced half-reaction for the oxidation of solid manganese dioxide to permanganate ion in acidic aqueous solution is given below:

MnO₂ + H₂O → MnO₄⁻ + H⁺ + 3 e⁻

In conclusion, the balanced oxidation half equation shows that three electrons were lost by the manganese (iv) ion to form manganese (vii) ion.

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Answer:

Phosphorus sesquisulfide, free from yellow and white phosphorus appears as a yellow crystalline solid. Easily ignited by friction. Forms sulfur dioxide and phosphorus pentaoxide during combustion. Reacts with water to form phosphoric acid, a corrosive material. Used to make matches and in the manufacture of other chemicals.

Explanation:

The innermost electron shell in an atom holds up to 2 electrons. The third shell can hold up to 18 electrons, and the fourth shell can hold up to 32 electrons.

Electron shells are composed of electrons. Electrons are negatively charged particles that orbit the nucleus in discrete energy levels known as electron shells. Each shell is represented by a number known as the principal quantum number.

The number of electrons that can fit into each shell depends on the number of protons in the nucleus. The first shell, which is closest to the nucleus, can hold up to two electrons. The second shell, which is further away from the nucleus, can hold up to eight electrons. The third shell can hold up to 18 electrons, and the fourth shell can hold up to 32 electrons.

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(a) When electrons are in their lowest energy state, we say that they are in _________.

(b) Sometimes, when ________ energy such as ________ or electricity is applied to the atom, the electrons absorb energy and transition to an _________ state.

(c) The electrons can not sustain this higher energy state for so long, so eventually ________ occurs.

(d) As a result, the electrons release energy in the form of a ______ and return back to ____.

(e) The jump between the high energy state to a lower energy state is called a _________.

(a) Ground State

(b) higher energy , excited state

(c) unstability

(d) light , ground state

(e) excited state absorption

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Explanation:

Heat, Oxygen and Fuel

hope it helps u

Answer:

a friction helps to cause fire and oxygen helps to increase it

hope that helps you please mark brainliest I will follow you

While it is difficult to see, the water molecules somewhat slow down as they collide with the spoon and accelerate its atoms. As a result, the spoon warms up when energy is transferred from the water, while the water cools.

In order to accomplish work and to produce heat and light, energy must be transferred to a body or to a physical system. Energy is the quantitative attribute that does this. Energy can be transformed in form but cannot be created or destroyed, according to the rule of conservation of energy.

The end of a metal spoon quickly becomes warm when it is plunged into a cup of boiling water. Conduction is the mechanism that moves heat along the spoon.

Due to the spoon's cooler temperature than the soup and its proximity to the hotter soup, heat is transferred through the spoon. Conduction is the term for this kind of heat transfer.

Thus, the spoon warms up when energy is transferred from the water, while the water cools.

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The orbital period of the asteroid, carried out to 4 significant digits, is approximately 1652.0 years.

To find the orbital period (P) of an asteroid with a given semi-major axis (a), we can use Kepler's third law:

a³ = P²

Given that the semi-major axis (a) is 73.4 AU, we can substitute this value into the equation and solve for the orbital period (P):

(73.4 AU)³ = P²

(73.4)³ AU³ = P²

P² = (73.4)³ AU³

Taking the square root of both sides:

P = sqrt((73.4)³) AU

Using a calculator to evaluate the expression, we find:

P ≈ 1652.0 AU

Therefore, the orbital period of the asteroid, carried out to 4 significant digits, is approximately 1652.0 years.

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Cathode ray refers to the electron beam that moves from the negatively charged cathode to the positively charged anode at the other end of the vacuum tube.

cathode ray, a stream of electrons leaving the cathode of a discharge tube that contains a gas at low pressure, or electrons released by a heated filament in some electron tubes.

The charge on cathode rays is negative. Sharp shadows can be created by cathode rays because they move in a straight line. Sharp shadows can be created by cathode rays because they move in a straight line. When exposed to magnetic and electric fields, cathode rays exhibit deflection.

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Answer:

T° freezing solution = -22.8°C

Explanation:

To solve this problem we apply, the Freezing Point Depression. This is a colligative property which its formula is:

T° freezing pure solvent - T° freezing solution = Kf . molality . i

i = Van't Hoff factor.

We have been informed is a nonionizing solute, so i = 1

Our solute is ethylene glycol, so le'ts determine the moles to get molality

388 g . 1 mol / 62.07 g = 6.25 moles

molality (m) = moles of solute /kg of solvent

We convert mass of solvent, water, to kg → 510 g . 1kg /1000g = 0.510 kg

6.25 mol /0.510kg = 12.25 m

We replace at formula → 0°C - T° freezing solution = 1.86°C/m . 12.25 m . 1

T° freezing solution = -22.8°C

Helicase would cease to function if the AMP-PNP was not hydrolyzed. ATP binding and hydrolysis cause conformational changes that allow helicase to unwind DNA.

Helicases are nucleic acid or nucleic acid protein complex binding enzymes that can also remodel them. There are helicases for both DNA and RNA. DNA helicases are required during DNA replication because they split double-stranded DNA into single strands, allowing each strand to be copied independently.

Helicases are a type of enzyme that is thought to be essential to all organisms. Helicases are motor proteins that use ATP hydrolysis to move directionally along a nucleic acid phosphodiester backbone, separating two hybridized nucleic acid strands. DNA helicases catalyze the dissolution of the hydrogen bonds that connect the two strands of double-stranded DNA. This energy-demanding unwinding reaction produces single-stranded DNA, which is used as a template or reaction intermediate in DNA replication, repair, and recombination.

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Answer:

177253.125hrs

Explanation:

Given parameters:

  Number of hours spend per day on phone  = 6.25hrs

 Unknown:

Average hours pend by an average American if they lived for 77.7yrs

Solution:

Let us find the number of hours an average American spends on their phone per year;

    there are 365days in a year

 Number of hours  = 365 x 6.25  = 2,281.25hrs

Now, if they lived for 77.7yrs;

  They will spend  = 77.7 x 2,281.25 = 177253.125hrs

Explanation:

The electronic configuration of the element given is:

           [Ne] 3s 3p

The family is the group the compound belongs on the periodic table. It is given by the number of valence electrons it contains.

The period is given by the principal quantum number. The principal quantum number is 3

The Orbital block is in the p-block

Answer:

860 J / mol

Explanation:

Enthalpy = Energy / no. of moles

no. of moles = mass / molar mass

Take the atomic mass of H = 1.0,

molar mass of H2 = 1.0 x 2

= 2.0

no. of moles of H2 = 9.00/2

= 4.5 mol

Hence,

Enthalpy = 3870 / 4.5

=860 J / mol

Answer:

The answer is "670.176 km".

Explanation:

Volume of the occupies of one  M & M= 0.5 \ cm^3\\\\

M&M 1 mole\(= 6.02 \times 10^{23}\\\\\)

Calculating volume of M& M mole\(= 0.5 \ cm^3 \times 6.02 \times 10^{23}=3.01 \times 10^{23}\ cm^3\\\\\)

Calculating the cube mole\(L^3= 3.01 \times 10^{23}\ cm^3\\\\\)

\(L=6.70176 \times 10^{7}\ cm\\\\\)

   \(=6.70176 \times 10^{7}\ cm \times \frac{1\ m}{100\ cm}\\\\=670176\ m\\\\=670.176 \ km\)

Therefore 18 tractor trailers wouldn't be sufficient.

Answer:

Explanation:

 When calcium carbonate is heated the new substances formed will be Calcium oxide and carbon dioxide

(a)

\(CaCO3 + heat\)→\(CaO+ CO2\)

\(Calcium carbonate + heat\)→\(Calcium oxide +Carbon dioxide\)

(b)

Elements are pure substances made up of the same atoms such as Ca, C, etc.

Compound are formed when two or more different types of elements are bonded together. like Calcium carbonate in this case

hence, \(CaCO3\) is a compound