True or false? Fetal hemoglobin has a higher affinity for oxygen than maternal hemoglobin because it has a higher affinity for the allosteric regulator 2,3-bisphosphoglycerate.

Answer:

Radiation

Explanation:

Answer:

Measure so that the line you are reading is even with the center of the meniscus. For water and most liquids, this is the bottom of the meniscus. For mercury, take the measurement from the top of the meniscus. In either case, you are measuring based on the center of the meniscus.

Explanation:

Answer:

a reaction in which oxidation numbers change

Explanation:

here you go happy to help

There are 118 elements on the periodic table.

Answer:

B. A Physicist

Explanation:

Answer:

A.

Explanation:

Miners were happy due to the result of the gold rush. they labored very hard for very little profit. Working in the Yukon Territory was not safe. To reach it, the ground had to be dug. Then the dirt had to be removed to get the gold.

In paragraph 2, what does the phrase "miners of all shapes and sizes" mean that many people were invited. This included food, clothing, transportation equipment, etc.

When Radon-228 undergoes alpha decay, the Radon-228 nuclide emits an alpha particle (He nuclei), the mass number increases by four, and the number of protons decreases by two.

During alpha decay, an unstable nucleus emits an alpha particle, which consists of two protons and two neutrons bound together. In the case of Radon-228, the nucleus emits an alpha particle, resulting in the formation of a daughter nuclide. The emission of an alpha particle decreases the number of protons in the nucleus by two because the alpha particle carries two protons away. Simultaneously, the mass number of the nucleus decreases by four because the alpha particle, with its two protons and two neutrons, is ejected from the nucleus.

Learn more about Radon-228:

brainly.com/question/17992590

#SPJ11

The value of Ka for the weak acid HZ is approximately 4.28 × 10⁻⁹, calculated using the given pH of 4.28 and concentration of HZ as 0.60 mol/L. Ka represents the acid dissociation constant and reflects the extent of acid dissociation in solution.

To find the value of Ka for the weak acid HZ, we can use the given pH of the solution. The pH is related to the concentration of H⁺ ions in the solution, which is determined by the dissociation of the weak acid.

The pH is defined as the negative logarithm (base 10) of the H⁺ concentration:

pH = -log[H⁺]

In this case, the pH is given as 4.28. Therefore, we can express the H+ concentration as:

\(\[[H^+] = 10^{-pH}\]\)

\(\[[H^+] = {10^{-4.28} \text{e}}\]\)

Next, we need to consider the dissociation of the weak acid HZ. It can be represented by the equilibrium reaction:

HZ ⇌ H⁺ + Z⁻

The equilibrium constant for this reaction is the acid dissociation constant, Ka. It can be expressed as:

Ka = [H⁺][Z⁻] / [HZ]

Given that the concentration of Z⁻ is equal to the concentration of HZ (since it's a 1:1 ratio), we can rewrite the Ka expression as:

Ka = [H⁺]² / [HZ]

Substituting the value of [H⁺] we calculated earlier:

Ka = \(\[(10^{-4.28})^2\]\) / [HZ]

Now, we need to determine the concentration of HZ in the solution. It is given as 0.60 m, which means the concentration of HZ is 0.60 mol/L.

Substituting this value into the expression:

Ka = \(\[(10^{-4.28})^2\]\) / 0.60

Calculating:

Ka ≈ 4.28 × 10⁻⁹

Therefore, the value of Ka for the weak acid HZ is approximately 4.28 × 10⁻⁹.

To know more about Ka for the weak acid refer here :    

https://brainly.com/question/24171531#

#SPJ11                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      

To calculate the mass of 3.4 moles of nitric acid (\(HNO3\)), we need to use the molar mass of nitric acid and the given number of moles.

The molar mass of \(HNO3\) can be calculated by summing the atomic masses of hydrogen (H), nitrogen (N), and oxygen (O) in one mole of \(HNO3\):

Molar mass of \(HNO3\) = (1.01 g/mol) + (14.01 g/mol) + (3 * 16.00 g/mol) = 63.01 g/mol

Now, we can calculate the mass of 3.4 moles of \(HNO3\) using the equation:

mass = moles * molar mass

mass of \(HNO3\) = 3.4 mol * 63.01 g/mol

mass of \(HNO3\) ≈ 214.34 g

Therefore, the mass of 3.4 moles of nitric acid (\(HNO3\)) is approximately 214.34 grams.

In summary, to calculate the mass of 3.4 moles of nitric acid (\(HNO3\)), we multiply the number of moles by the molar mass of \(HNO3\). In this case, the molar mass of \(HNO3\) is 63.01 g/mol, and by multiplying it with 3.4 moles, we find that the mass of \(HNO3\) is approximately 214.34 grams.

Learn more about nitric acid here:
https://brainly.com/question/29769012

#SPJ11

Answer:

6

Explanation:

Li has an oxydation number of 1          2*1     = 2

O has an oxidation number of -2         4(-2) = -8

S has an oxydation number of x           1 * x = x

The oxidation number on the molecule is 0.

So here is the equation

2 - 8 + x = 0        Combine like terms

-6 + x = 0            Add 6 to both sides

-6 + 6 + x = 6      Combine like terms

x = 6

Sulphur in this case has an oxidation number of 6

Answer:

The volume of the gas is approximately 4.41 liters

Explanation:

The details of the data of the Neon gas are;

The number of moles of Neon gas present, n = 11.6 moles

The temperature of the sample of Neon gas, T = 120 K

The pressure of the sample of the Neon gas, P = 25.6 atm

By the ideal gas equation, we have;

P·V = n·R·T

Where;

R = The universal gal constant = 0.08205 L·atm·mol⁻¹·K⁻¹

Therefore, we get;

V = n·R·T/P

Which gives;

V = 11.6 moles × 0.08205 L·atm·mol⁻¹·K⁻¹ × 120 K/(25.9 atm) ≈ 4.4097915 L

The volume of the gas, V ≈ 4.41 L.

Considering the given bonded atoms below:

A polar bond occurs when there is a significant difference in electronegativity between two atoms in a molecule.

In a polar bond, the more electronegative atom pulls the shared electrons closer to itself, creating an uneven distribution of charge.

An example of a polar bond is C-Cl.

A non-polar bond occurs when there is little or no difference in electronegativity between the atoms in a molecule.  Both atoms have similar or identical electronegativity, leading to a balanced distribution of charge.

An example is the C-C bond.

Learn more about polar and non-polar bonds at: https://brainly.com/question/17118815

#SPJ1

The simplest proportion of the components of a molecule is shown in an empirical chemical formula instead of the overall amount of atoms within the molecule.

Primary constituent of a whole. refers to a straightforward substance that can't be divided into smaller components or transformed into another substance in chemistry. An atom, which is made up of protons, neutrons, and electrons, is the fundamental unit of an element. An element's atoms all contain the same number atomic protons.

The smallest component of an object that cannot be destroyed chemically. The centre of every atom is called the nucleus, and it is made up of neutrons and protons. The nucleus is filled with electrons, which are negative particles.

To know more about element visit :

https://brainly.com/question/13025901

#SPJ4

Am-241 + He-4 → Bk-244 + 3n. In this equation, the collision between an Am-241 nucleus and a He-4 nucleus results in the formation of a Bk-244 nucleus and three neutrons.

1. To produce berkelium-244 (Bk-244), the reaction involves the combination of an americium-241 (Am-241) nucleus and a helium-4 (He-4) nucleus. The balanced nuclear equation for this reaction is as follows:

Am-241 + He-4 → Bk-244 + 3n

2. In this equation, the Am-241 nucleus (with 95 protons and 241 nucleons) collides with the He-4 nucleus (with 2 protons and 4 nucleons). The result of this reaction is the formation of a berkelium-244 (Bk-244) nucleus, which has 97 protons and 244 nucleons, along with the emission of three neutrons (3n).

3. It's important to note that transuranium elements, including berkelium, have atomic numbers higher than uranium (atomic number 92) and are typically produced through nuclear reactions involving heavy elements like americium and neutron bombardment.

Learn more about transuranium here: brainly.com/question/2569344

#SPJ11

Answer:

\(\Large \boxed{\mathrm{1 \ valence \ electron}}\)

Explanation:

Molybdenum is an element with an atomic number of 42.

An atom of Molybdenum has 42 electrons.

The electronic configuration of Molybdenum is 2, 8, 18, 13, 1.

The valence electrons are the number of electrons in the last shell.

Molybdenum has 1 valence electron.

Answer: B. Fire is releasing energy

Explanation:

The amount of the solute present in the given solution is called the concentration. The best way to represent the concentration of the solution is \(\rm [K_{2}CrO_{4}].\)

Molar concentration is the molarity of the solution that is the measure of the concentration of the solute dissolved in the solution.

The formula for calculating molar concentration is given as,

\(\rm Molarity = \dfrac{\text{moles of solute}}{\text{Solution in L}}\)

The concentration of any substance is represented in the square bracket like \(\rm [X]\) or  \(\rm [K_{2}CrO_{4}].\)

Therefore, option B. \(\rm [K_{2}CrO_{4}]\) is the representation of the concentration.

Learn more about the molarity here:

https://brainly.com/question/1532164

Answer: [K2CrO4]

Explanation:

Answer:

C. Food on shelves in a refrigerator

Answer:

38.9mL are needed.

Explanation:

1st) It is necessary to calculate the number of moles of HCl that will be contained the 161.1mL of the 3.03M solution:

Now we know that the new solution will have 0.488 moles of HCl.

2nd) With the number of moles and the molarity of the original solution, we can calculate the volume of the 12.56M HCl needed:

So, 38.9mL are needed.

Answer:

Chemical

Explanation:

I remember learning this in AP Chemistry class. Salt is an ionic compound that comes from the neutralization reaction of an acid and a base. If I am wrong, I am sorry it has been a long time since I passed the Chemistry class.

The molar mass of the unknown solute is 0.15 g/mol.

We know that the boiling point is one of the colligative properties thus it depends on the amount of the substance. Then we can be able to recall that;

Molality of the solute = Number of moles/ mass of the solvent

We have that;

Molality = 10.5 m

Number of moles of the solute = 1.5 g/M

Where M is the molar mass of the solute

Mass of the solution = 1Kg'

Then;

10.5 = 1.5 g/M/1

10.5 = 1.5 g/M

M = 1.5 g/10.5

M = 0.15 g/mol

Learn more about molar mass:https://brainly.com/question/12127540

#SPJ1

Answer:

I think D

Explanation:

Kinetic energy has a direct relationship with mass, meaning as mass increases so does the kinetic Energy of an object.

Answer:

Old theories are dependent on primitive technology that was flawed, so new technology must be used.

Explanation:

The process of science is an unending process of inquiry into the nature of the universe. This inquiry into the nature of the universe is aimed at understanding of how things work and how the natural course of the universe can be exploited for man's good.

As new scientific evidences emerge, old theories are revised because we understand the world better, better technology is used to investigate nature in order to get a clearer view of natural phenomena.

Most old theories depend on obsolete technology, hence modern day sophisticated equipment must be used to correct the flaws of old theories.

Answer:Hi! I hope this will help you with your question, whether this is an assignment or not. The answer that I get is 0.033 concentration.

If 0.0025 mol NaNo3 forms during the reaction, the concentration of NaNO3 in the final solution should be 0.033.

Explanation:

Answer:

It has two sigma bonds ( the single bonds between each H and C) plus one pi bond and one sigma bond that consitute the double bond between C and O. It contains three covalent bonds, one . Hydrogen Bond Donor Count: 0: Computed by Cactvs 3.4.

Explanation:

Hope it helps you!

It is true that according to Hubble's law, the farther away a galaxy is, the faster it is moving away from us.

It is true that the formation of a star occurs when nuclear fusion begins to fuse light elements into heavier ones;

The distance to the nearest stars can be determined by parallax, the apparent shift of a start against background stars observed as the earth moves along its orbit. (Option B)

Based on the accompanying H-R Diagram, the type of start that has the greatest temperature is the blue giants (Option C)

Two hydrogen atoms come together in a nuclear fusion reaction to produce Helium Gas. (Option A).

Hubble's law, which essentially states that the velocity of a galaxy (or, as it is commonly plotted, its redshift) is precisely proportionate to its distance, also reveals crucial information about the condition of the universe. There should be no relationship between distance and velocity if the cosmos is static and unchanging.

Hubble's law is the physical cosmology observation that galaxies move away from Earth at a rate proportionate to their distance. In other words, the farther they are from Earth, the quicker they are travelling away.

Learn more about Hubble Law:
https://brainly.com/question/13705068
#SPJ1

Answer:

alleles

Explanation: