The goal of the Human Genome Project was to _____.


locate specific genes that caused given diseases

identify the RNA of the human genome

promote friendliness among the various sciences

map the entire human genome

Taking into account the reaction stoichiometry, 1 mole of H₂ can be produced by reacting 2 moles of HCI.

In first place, the balanced reaction is:

Mg + 2 HCl  → MgCl₂ + H₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

By reaction stoichiometry 2 moles of HCl form 1 mole of H₂.

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The size of the reactor for maximum yield is 4.4 m3 for a mixed-flow reactor, 1.47 m3 for three equal-sized mixed-flow reactors in series, and 4.26 m3 for a plug-flow reactor.

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Answer:

About 21*.3 years old

Explanation:

The balanced equation for the reaction is:

HCN (aq) + NaOH (aq) → NaCN (aq) + H2O (l)

First, we need to find the volume of NaOH solution needed to reach equivalence:

0.7066 M HCN × 0.2100 L = x M NaOH × 0.2100 L

x = 0.3366 M NaOH

The volume of NaOH solution needed to reach equivalence is:

0.3366 M NaOH × VNaOH = 0.4210 M NaOH × 0.2100 L

VNaOH = 0.527 L = 527 mL

So, the total volume of the solution at equivalence is:

210.0 mL + 527 mL = 737 mL = 0.737 L

Now we can use the Henderson-Hasselbalch equation to find the pH at equivalence:

pH = pKa + log([A-]/[HA])

At equivalence, [HCN] = [CN-], so:

pH = pKa + log(1) = pKa = 9.21

Therefore, the pH at equivalence is 9.21.

Answer:

\(0.0397\ \text{mol}\)

Explanation:

Number of molecules of water = \(2.39\times 10^{22}\)

\(N_A\) = Avogadro's number = \(6.022\times 10^{23}\ \text{mol}^{-1}\)

Number of moles is given by

\(\dfrac{2.39\times 10^{22}}{6.022\times 10^{23}}\)

\(=0.0397\ \text{mol}\)

The number of moles of water is \(0.0397\ \text{mol}\).

For this question we are going to use Gay-Lussac's Law, which is an experimental gas law that shows the relationship between temperature and pressure in a gas. The formula is:

P1/T1 = P2/T2

We have:

P1 = 97 kPa

T1 = 308 K, we need to use Kelvin

P2 = ?

T2 = 348 K

Now we add these values into the formula:

97/308 = P2/348

0.315 = P2/348

P2 = 109.6 kPa, this will be new pressure

Answer: 48k

A rare metal alloy is a superconductor at -225 °C. What is the temperature on the Kelvin scale?

Answers:-498 K

48 K

-48 K

498 K

Explanation:

sub to (j so random) on yt plss

Answer:

In a quantum model of the atom, the shape of an electron orbital represents the probability distribution of finding an electron in a particular region of space around the nucleus of an atom. In other words, an electron orbital is a three-dimensional space around the nucleus where there is a high probability of finding an electron with a given energy level.

Different orbitals can have different shapes, such as spherical, hourglass-shaped, or more complex shapes.

Electron Orientations:

s = 1 orbital orientation

p = 3 orientations (\(6e^-\))

d = 5 orientations (\(10e^-\))

f = 7 orientations (\(14e^-\))

The molarity of the sodium hydroxide solution is 0.09111 M.

What is Molarity?

Molarity is a measure of the concentration of a solution. It is defined as the number of moles of solute dissolved in one liter of solution.

Molarity is an important concept in chemistry because it allows us to quantify the amount of solute in a solution and to make predictions about the behavior of the solution in various chemical reactions.

First, we can calculate the number of moles of potassium hydrogen phthalate using its molecular weight:

moles of KHP = mass / molecular weight

moles of KHP = 0.600 g / 204.22 g/mol

moles of KHP = 0.002938 mol

Since one mole of KHP reacts with one mole of NaOH, we know that there are also 0.002938 moles of NaOH in the titrated solution. We can calculate the molarity of the NaOH solution using the formula:

molarity = moles of solute / volume of solution (in liters)

First, we need to convert the volume of the NaOH solution from milliliters to liters:

volume of NaOH solution = 32.21 mL = 0.03221 L

Now we can calculate the molarity of the NaOH solution:

molarity = 0.002938 mol / 0.03221 L

molarity = 0.09111 M

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The instantaneous rate of reaction at 17 minutes is approximately -0.178 mol dm⁻³

To find the instantaneous rate of reaction at 17 minutes, we can use the concept of differential calculus and estimate the slope of the tangent line at t=17 on the graph of rate versus time.

To do this, we can use the formula for the slope of a line

slope = (change in y) / (change in x)

In this case, the "y" values are the rates of reaction and the "x" values are the times. We want to find the slope at t=17, so we can choose two points that are very close to t=17, such as t=15 and t=20. Then, we can use these values to estimate the slope at t=17

slope = (rate at 20 min - rate at 15 min) / (20 min - 15 min)

slope = (0.135 - 0.223) / (20 - 15)

slope = -0.178

This slope represents the instantaneous rate of reaction at t=17. However, since it has a negative value, it means that the rate of reaction is decreasing at t=17.

Therefore, the instantaneous rate of reaction at 17 minutes is approximately -0.178 mol dm⁻³

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The periodic table is arranged in such a way that elements with similar valence electron configurations are placed in the same group or column.

Valence electrons are the outermost electrons in an atom, and they play a critical role in determining the chemical properties of an element.

The elements in each column of the periodic table have the same number of valence electrons, which gives them similar chemical properties

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Answer: it is C, why molecules have different shapes.

Explanation:

A P E X

The VSEPR theory (Valence Shell Electron Pair Repulsion theory) describes why molecules have different shapes.

C. Why molecules have different shapes.

The VSEPR theory is a model used to predict the shapes of molecules based on the repulsion between electron pairs in the valence shell of the central atom. It states that electron pairs, whether bonding or non-bonding, repel each other and tend to position themselves as far apart as possible to minimize electron-electron repulsion. This repulsion determines the spatial arrangement and overall shape of the molecule.

By considering the number of electron pairs around the central atom and the repulsion between them, the VSEPR theory can predict molecular geometries, including linear, trigonal planar, tetrahedral, trigonal bipyramidal, and octahedral, among others. It explains why molecules such as water (H₂O) have a bent shape or why carbon dioxide (CO₂) is linear.

Therefore, the correct answer is C. The VSEPR theory describes why molecules have different shapes by considering the repulsion between electron pairs in the valence shell of the central atom.

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The pH of the solution made by dissolving 135 g of sulphuryl chloride in water to make 1 dm^3 of solution will be acidic.

To calculate the pH of the solution made by dissolving 135 g of sulphuryl chloride (SOCl2) in water to make 1 dm^3 of solution, we need to consider the hydrolysis reaction of sulphuryl chloride with water:

SOCl2 + 2H2O → H2SO4 + 2HCl

In this reaction, sulphuryl chloride reacts with water to form sulphuric acid (H2SO4) and hydrochloric acid (HCl).

First, we need to determine the number of moles of sulphuryl chloride in the solution. To do this, we divide the given mass of sulphuryl chloride by its molar mass:

Molar mass of SOCl2 = 32.5 g/mol + 2 × 35.5 g/mol = 118.5 g/mol

Number of moles of SOCl2 = Mass / Molar mass = 135 g / 118.5 g/mol = 1.14 mol

Since we are dissolving 1.14 mol of sulphuryl chloride in 1 dm^3 of solution, the concentration of sulphuryl chloride is 1.14 M.

Now, we can consider the hydrolysis reaction. The hydrolysis of sulphuryl chloride produces hydrochloric acid, which is a strong acid. When a strong acid is completely dissociated in water, it results in a solution with a low pH. Therefore, the pH of the solution will be acidic.

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There are 5.79 x 10²¹ representative particles in 2.62g of the molecular compound.

Determine the number of moles of the molecular compound.

We can use the formula:

moles = mass / molar mass

where mass is 2.62g and molar mass is 273g/mol.

moles = 2.62g / 273g/mol

moles = 0.00961 mol

Use Avogadro's number to convert from moles to representative particles.

We can use the formula:

representative particles = moles x Avogadro's number

where Avogadro's number is 6.022 x 10²³.

representative particles = 0.00961 mol x 6.022 x 10²³

representative particles = 5.79 x 10²¹

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Mumbai is the best as it has the largest population and the closest temp to that of cooking pasta

Mumbai an city in India with an average temperature of 33C and a population of about 21,296,516

Denver a city in Colorado in the USA with a temperature of 5C and a population of 705,576 (2019)

Mexico City  a city in Mexico with a temperature of 12C and a population of 9 Million persons

Therefore, Mumbai is the best as it has the largest population and the closest temperature to that of cooking pasta

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we would need 2625.13 grams (or 2.62513 kilograms) of NaCl.

To calculate the mass of NaCl required to produce a 26.4 mol/L solution with a 1.7 L volume, we need to use the formula that relates the mass of solute, moles of solute, and molarity:Molarity (M) = moles of solute / liters of solution Rearranging this formula, we get:moles of solute = Molarity (M) x liters of solutionWe can use this formula to find the moles of NaCl needed:moles of NaCl = 26.4 mol/L x 1.7 L = 44.88 molNow, we can use the molar mass of NaCl to convert from moles to grams. The molar mass of NaCl is 58.44 g/mol:mass of NaCl = moles of NaCl x molar mass of NaClmass of NaCl = 44.88 mol x 58.44 g/mol = 2625.13 gTo produce a 26.4 mol/L solution with a 1.7 L volume.

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The combined gas law equation is:

(P1 * V1) / (T1) = (P2 * V2) / (T2)

The volume of the gas at 30 °C is approximately 760.67 mL.

To determine the volume of the gas at 30 °C, we can use the combined gas law equation, which relates the initial and final conditions of temperature and volume for a gas.

The combined gas law equation is:

(P1 * V1) / (T1) = (P2 * V2) / (T2)

Where:

P1 and P2 are the initial and final pressures, respectively

V1 and V2 are the initial and final volumes, respectively

T1 and T2 are the initial and final temperatures in Kelvin, respectively

We need to convert the temperatures from Celsius to Kelvin by adding 273.15 to each value.

Given:

V1 = 550 mL

T1 = -55 °C = 218.15 K

T2 = 30 °C = 303.15 K

Assuming the pressure remains constant, we can rearrange the equation to solve for V2:

V2 = (P1 * V1 * T2) / (P2 * T1)

Since the pressure is not specified in the problem, we can assume it remains constant, allowing us to cancel out the pressure terms. Thus, the final equation becomes:

V2 = (V1 * T2) / T1

Plugging in the given values:

V2 = (550 mL * 303.15 K) / 218.15 K

Simplifying the calculation, we find:

V2 ≈ 760.67 mL

Therefore, the volume of the gas at 30 °C is approximately 760.67 mL.

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Sand, seawater, and salt are substance because all of these matter has a specific composition and specific properties.

A substance is defined as a matter which has a specific composition and properties. A compound is a mixture that is the same or uniform throughout. Think of the example of salt water. This is also called a "homogenous mixture." A blend that is not a solution is not constant throughout. Saltwater is a homogeneous mixture or a solution. Soil is collected from small pieces of a variety of materials, so it is a heterogeneous mixture. Water is a substance; more correctly, because water is controlled by hydrogen and oxygen, it is a compound.

So we can conclude that Salt and other combination can only be decomposed into their elements by a chemical process.

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In gases, the particles of the compound will be moving rapidly in all possible directions, colliding with each other and also with the container, and this happens because of the kinetic energy of the particles, since the temperature was increased, the particles received more kinetic energy and then will be moving rapidly and randomly. Therefore the best statement is the 1st

Answer:

32000 pounds

14741.752 kilograms

14741752 grams

16.25 tons

Answer:

All known vaccine molecules must be tested to find the right one.

Explanation:

I took the test

Answer:

0.551 moles

Explanation:

To calculate the number of moles in 22 grams of argon, divide the mass by the molar mass:

Number of moles = Mass / Molar mass

Number of moles = 22 g / 39.95 g/mol

Number of moles ≈ 0.551 moles

Therefore, there are approximately 0.551 moles of argon in 22 grams of argon.

Answer:

1

Explanation:

A chemical reaction that requires an input of energy in order to proceed is termed Endothermic, whereas one that releases energy is called Exothermic.

The endothermic process is a word used to describe a reaction in which the system takes up heat from its environment. Photosynthesis, evaporating liquids, melting ice, dry ice, alkane cracking, thermal decomposition, ammonium chloride in water, and many more processes are examples of endothermic processes. A reaction that is exothermic is the opposite of one that is endothermic. It emits energy onto its surroundings as heat or light. Examples include neutralization, burning a chemical, fuel reactions, dry ice deposition, respiration, sulphuric acid solution in water, and many more.

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Answer:

the answer is c

Explanation:

Answer:

Im doing this rn :0, look at explanation ill try to help

Use different words

Have a great day!

pls give brainliest and hit the heart if this helped :3

Explanation:

The changes I observed are that when you do not use hot water, the food coloring stays at the bottom and doesn't spread to the top, but when I do use food coloring, it spreads everywhere in the water. I don't know what caused the changes I observed, but I think its because heating food coloring does something to it to make it spread, maybe hotter liquids spread faster?

Answer:

A. CaCO(s)+SO(g)+O(g) --> CaSO(s)+CO(g)

A. CaCO(s)+SO(g)+O(g) --> CaSO(s)+CO(g)

The molar volume of the gas : V = 447.993 L

Given

n = 1 mol

P = 0.05 atm

T = 273 K

Required

The molar volume

Solution

Ideal gas law :

PV=nRT

V = nRT/P

Input the value :

V = 1 x 0.08205 x 273 / 0.05

V = 447.993 L