Equal volume of solutions with pH equal to 4 and pH equal to
10 are mixed. pH of the resulting solution is

Below brief description of each of these rocks:

Conglomerate: Conglomerate is a type of sedimentary rock that is characterized by its rounded pebbles and the cementing material that holds them together. The pebbles in conglomerate rocks can be made up of a variety of different rock types, and they are typically rounded due to the effects of weathering and erosion.

Therefore, Conglomerate is often found in areas where there is a high amount of water flow, such as along riverbeds or in coastal areas. It can be used for a variety of purposes, including as a building material, as a decorative stone, and in landscaping.

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The receptor in blinking is receptors present in eyes and the effectors are the muscles in the eyes that cause the eye to contract and thereby encourages blinking of eye.

Receptors are the organs responsible for receiving external stimuli and transmitting them to the Central Nervous System. Effectors are the organs that carry out the central nervous system's instructions in response to external stimuli.

All receptors are essentially supplied by sensory nerves that can carry the stimulus to the CNS. Effectors are primarily supplied by motor nerves, which are capable of carrying instructions from the CNS.

Skin, eye, ear, nose, and tongue are all examples of receptors. Effectors are either muscles or glands.

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Blood is pumped from the heart at a rate of 5.4 l/min into the aorta of radius 1.1 cm. The speed of blood through the aorta, in cm per second, is 33.1 cm/s.    

Given dataPump rate = 5.4 L/minRadius of aorta = 1.1 cmTo findVelocity of the blood in the aortaVelocity can be determined using the formula; `v = Q/A`Here, Q is the volumetric flow rate and A is the cross-sectional area of the aorta.Step 1: Firstly, let’s convert the volumetric flow rate from liters to cubic centimeters.1 L = 1000 cubic cmSo, 5.4 L/min = 5400 cubic cm/minStep 2: Cross-sectional area of aorta can be found asA = πr²A = π(1.1 cm)²A = 3.801 cm²Step 3.

Now, put the given values in the velocity formula:V = Q/AV = (5400 cubic cm/min) / (3.801 cm²)V = 1420.94 cm/minStep 4: Finally, let’s convert the velocity from cm/min to cm/s.1 min = 60 sSo, 1420.94 cm/min = 23.68 cm/sTherefore, the speed of blood through the aorta, in cm per second, is 23.68 cm/s.

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Answer:

Combustion reaction.

Explanation:

Answer:

When you heat a gas, both its vapor pressure and the volume it occupies increase. The individual gas particles become more energetic and the temperature of the gas increases. At high temperatures, the gas turns into a plasma.

Explanation:

Answer:

c

Explanation:latitude,longitude

a. The rate law for the elementary step \(O_{3} + Cl\) --> \(O_{2} + ClO\) is k[\(O_{3}\)][Cl], indicating that the reaction is bimolecular.

b. The rate law for the elementary step \(NO_{2}\) + \(NO_{2}\) --> \(NO_{3}\) + NO is k[\(NO_{2}\)]2, indicating that the reaction is termolecular.

c. The rate law for the elementary step 2NO + \(H_{2}\) --> \(H_{2}O_{2}\) + \(N_{2}\) is k[NO][\(H_{2}\)], indicating that the reaction is bimolecular.

The moleculаrity of а reаction refers to the number of reаctаnt pаrticles involved in the reаction. Becаuse there cаn only be discrete numbers of pаrticles, the moleculаrity must tаke аn integer vаlue. Moleculаrity cаn be described аs unimoleculаr, bimoleculаr, or termoleculаr. А unimoleculаr reаction occurs when а molecule reаrrаnges itself to produce one or more products. Аn exаmple of this is rаdioаctive decаy, in which pаrticles аre emitted from аn аtom.

А bimoleculаr reаction involves the collision of two pаrticles. Bimoleculаr reаctions аre common in orgаnic reаctions such аs nucleophilic substitution.  А termoleculаr reаction requires the collision of three pаrticles аt the sаme plаce аnd time. This type of reаction is very uncommon becаuse аll three reаctаnts must simultаneously collide with eаch other, with sufficient energy аnd correct orientаtion, to produce а reаction.

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Measurement is a way to describe matter with numbers and units.

Measurement is a fundamental process used to describe and quantify various aspects of matter. It involves assigning numerical values to physical quantities and expressing them using appropriate units of measurement.

In scientific and everyday contexts, measurements provide a standardized and consistent way to communicate information about the properties, dimensions, quantities, and characteristics of objects, substances, or phenomena. By using measurements, we can describe the size, length, mass, volume, temperature, time, and many other attributes of matter.

The process of measurement typically involves two components: a numerical value and a unit. The numerical value represents the magnitude or quantity being measured, while the unit provides the reference or scale by which that quantity is expressed. Units help provide meaning, context, and comparability to measurements.

Hence, measurement provides a quantitative and objective way to describe matter, allowing us to understand and interact with the physical world in a systematic and meaningful manner.

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Answer:

392 N

Explanation:

Weight=Mass*Gravity

Weight=40*9.8

Weight=392 Newtons

Answer:

the answer is gravity

hope this helps

The equation that represents a single replacement reaction given the various options is 2Al(s) + 6HCl -> 2AlCl₃(aq) + 3H₂O(g) (option 2)

A single replacement reaction, also known as single displacement reaction is a reaction in which elements higher in the electro-chemical series displace or replace elements lower in the electro-chemical series displace from a solution.

The following example illustrates single replacement reaction:

A + BC -> AC + B

From the above reaction, we can see that A has replace/displace B to from AC.

With the above information, we can determine the equation that represents single replacement reaction. Details below:

Equation from the questions:

From the above, we can see that only 2Al(s) + 6HCl -> 2AlCl₃(aq) + 3H₂O(g) conform to single replacement reaction.

Thus, the correct answer to the question is: 2Al(s) + 6HCl -> 2AlCl₃(aq) + 3H₂O(g) (option 2)

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The temperature at which a reaction becomes spontaneous depends on the change in enthalpy and entropy, which can be calculated using the equation ΔG = ΔH - TΔS. In this case, a temperature above 1564 Kelvin is required for the reaction to be spontaneous.

The spontaneity of a reaction is determined by the change in free energy, which is calculated using the equation ΔG = ΔH - TΔS, where ΔG is the change in free energy, ΔH is the change in enthalpy, T is the temperature in Kelvin, and ΔS is the change in entropy.

If ΔG is negative, the reaction is spontaneous. Therefore, we need to find the temperature at which ΔG becomes negative.

Given ΔH = 498 kJ and ΔS = 319 J/K, we can plug these values into the equation and solve for T:

ΔG = ΔH - TΔS

-ΔG = TΔS - ΔH

T = (ΔH/ΔS)

T = (498 kJ / 319 J/K)

T = 1564 K

Therefore, the reaction will be spontaneous above a temperature of 1564 Kelvin.

In summary, the temperature at which a reaction becomes spontaneous depends on the change in enthalpy and entropy, which can be calculated using the equation ΔG = ΔH - TΔS. In this case, a temperature above 1564 Kelvin is required for the reaction to be spontaneous.

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Answer:

Answer one:
Solute particles block some of the ability of liquid particles to evaporate. We can then conclude, solutions of solid solutes typically have a lower vapor pressure than pure solvents.

Answer two:
Solutions freezing points are lower than of the pure solvent or solute because freezing (becoming a solid) creates order and decreases entropy.

Answer three:
The presence of solute particles decreases the vapor pressure of the liquid solvent, this means a higher temperature is needed to reach the boiling point.

Explanation:

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For the number less than 0.1 such as 0.006, the zeroes to the right of the decimal point but before the first non zero digit show the decimal place of the first significant digit.

There is only one significant figure in the provided number 0.06. The decimal place of the first digit is indicated by the zeros that appear to the right of the decimal point but before the first non-zero digit.

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Answer:

C Ionic

Explanation:

The proper way to bring the temperature on lab thermometers down is to shake the thermometer to lower the temperature.

Swing the thermometer back and forth by grabbing it at the end farthest from the tip.

Make sure it falls below the average body temperature, which is 96.8 °F (36.0 °C), at the very least.

This way you have successfully lowered the temperature of the thermometer as it is now below the body temperature of a human, on the average.

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Answer:

Explanation:

Here, we want to get the name for the given chemical formula

Looking at the formula, we look at the names of the element

The names are sodium and fluorine

We write the name of the metal element first, then the non-metal atom

Thus, we have it as

Answer:

3.125g/mol

Explanation:

To find the molar mass of the gas, we need to initially find the number of moles (n) contained in the gas. To find the number of moles, we use the general gas law whose equation is:

PV=nRT

Where; P= Pressure

V= Volume occupied by gas

n= number of moles

R= general gas constant

(0.0821 L atm mol/K)

T= absolute temperature

According to the question; P= 2.0atm, V= 2.0L, n= ?, T= 298K

To find n, we make it the subject of the formula:

n= PV/RT

n= 2.0 × 2.0 / 0.0821 × 298

n= 4/ 24.4658

n= 0.16mol

If number of moles (n) of the gas is 0.16mol and it weighs 0.500g, its molar mass can be found using:

number of moles (n) = mass (g) / molar mass

Making MM subject of the formula;

molar mass = mass / number of moles

MM= 0.500/0.16

MM= 3.125

Hence, the molar mass of the gas is 3.125g/mol.

The empirical formula of quinine is C20H24N2O2, and the molecular formula is C34H40N4O4.

To determine the empirical and molecular formulas of quinine, we need to calculate the molar ratios of the elements present in the given combustion reaction.

First, let's calculate the moles of carbon dioxide (CO2), water (H2O), and nitrogen (N2) produced:

Moles of CO2 = mass of CO2 / molar mass of CO2

= 1.321 g / 44.01 g/mol

= 0.030 moles

Moles of H2O = mass of H2O / molar mass of H2O

= 0.325 g / 18.02 g/mol

= 0.018 moles

Moles of nitrogen = mass of nitrogen / molar mass of nitrogen

= 0.0421 g / 28.01 g/mol

= 0.0015 moles

Next, we need to calculate the moles of carbon, hydrogen, and nitrogen in quinine:

Moles of carbon = 0.030 moles (since 1 mole of CO2 contains 1 mole of carbon)

Moles of hydrogen = 0.018 moles / 2 (since 1 mole of H2O contains 2 moles of hydrogen)

= 0.009 moles

Moles of nitrogen = 0.0015 moles

To determine the empirical formula, we divide the moles of each element by the smallest mole value (in this case, nitrogen):

Empirical formula: C20H24N2O2

To calculate the molecular formula, we need to compare the empirical formula mass (molar mass of empirical formula) with the molar mass of quinine:

Empirical formula mass = (12.01 g/mol × 20) + (1.01 g/mol × 24) + (14.01 g/mol × 2) + (16.00 g/mol × 2)

= 382.42 g/mol

Molecular formula = (molar mass of quinine) / (empirical formula mass)

= 324 g/mol / 382.42 g/mol

≈ 0.847

Multiplying the empirical formula by the factor obtained:

Molecular formula: C34H40N4O4

In conclusion, the empirical formula of quinine is C20H24N2O2, and the molecular formula is C34H40N4O4.

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a. 4.2 x 10⁻¹³ J

b. 6.3 x 10⁻²⁰ J

c. 7 x 10⁻¹⁸ J

Radiation energy is absorbed by photons

The energy in one photon can be formulated as

\(\large{\boxed{\bold{E\:=\:h\:.\:f}}}\)

Where

h = Planck's constant (6,626.10⁻³⁴ Js)

f = Frequency of electromagnetic waves

a.

\(\tt E=6.626.10^{-34}\times 6.32.10^{20}=4.1876.10^{-13}~J\)

b.

\(\tt E=6.626.10^{-34}\times 9.50.10^{13}=6.2947.10^{-20}~J\)

c.

\(\tt E=6.626.10^{-34}\times 1.05.10^{16}=6.9573.10^{-18}~J\)

If one form of a gene can mask the appearance of another form, that form is considered dominant over the other form. Option B.

According to Mendel, genes are usually made up of 2 alleles. These alleles can be the same or different. When the alleles are the same, the gene is said to be homozygous. If the alleles are different, the gene is said to be heterozygous.

When the two alleles that make up a gene are different, one will be dominant and the other will be recessive. The dominant gene masks the effect of the recessive gene. In other words, the recessive gene cannot be expressed as long as it coexists with the dominant gene. In order for it to be expressed, it has to be in two copies or a homozygous recessive form.

For the dominant allele, however, only one copy is needed for it to be expressed.

In summary, if one form of a gene can mask the appearance of another form, that form is considered dominant over the other form.

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Answer:

I did this already

................

Answer:

Is an absolute temperature scale with zero at absolute zero

Answer:

The Answer is 112.118

Explanation:

Answer:

62.582 cm

Explanation:

divide 55.040mm by 10 because there is 10mm in 1 cm.

you will get 5.504 then just add 23.033 and 34.045

- the least amount of sig figs after the decimal is 3 so it stays as 62.582 cm.

the Sun light from different parts of the Moon as the Moon revolves around the Earth

Answer:

190

Explanation:

Gold has atomic number of 79, which is the number of protons.

Mass number = #protons + #neutrons = 79 + 111 = 190

Explanation:

H2O:

2 H2O shows 2 atoms of hydrogen. The number 2 in front of it means 2 moles of H2O

----------

CHA:

It only shows 1 atom of hydrogen

1 CHA means 1 mole of CHA

2 CHA means 2 moles of CHA

----------

HO2:

It only shows 1 atom of hydrogen

---------

H2SO4:

It shows 2 atoms of hydrogen

Answer:

H2O

H2SO4

Answer:

"500 Joule/sec" is the right answer.

Explanation:

The given values are:

Force,

F = 1000 N

Velocity,

s = 10 m

Time,

t = 20 s

Now,

The power will be:

=  \(\frac{Force\times Velocity}{Time}\)

On putting the values, we get

=  \(\frac{1000\times 10}{20}\)

=  \(\frac{10000}{20}\)

=  \(500 \ Joule/sec\)

Erwin Schrodinger is the scientist who created the present theory of the atom, which states that electrons are found in areas known as orbitals or electron clouds.

He proposed the treatment of electrons as matter waves in the quantum mechanical model of the atom. In 1926, Erwin Schrodinger created the "Electron Cloud Model." It was made up of an electron cloud with many different orbital levels surrounding a dense nucleus. He determined areas around the nucleus that are most likely to contain electrons based on his estimates. He referred to these areas as orbitals. "Lobes" are a term used to describe the likelihood of finding electrons in orbitals. This atomic model is a representation of an atom that has a small, massive nucleus that is encircled by a cloud of electrons that are travelling quickly.

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