1. Huntington’s disease is a dominant allele (not sex linked) that usually does not manifest itself until after age thirty- five. Individual who have the disease are almost always heterozygous. As a genetics counselor, you are visited by a 23-year-old woman. Her mother has Huntigton’s, but her father is normal. Use alphabets when required.

a. What is the genotype of the mother?

b. What is the genotype of the father?

c. What is the probability that this woman will develop Huntington’s disease as she grows older ?


WHO KNOWS HOW TO DO THIS

Answer:

hola comoe stas

Explanation:

gracias x los puntos

Answer:

Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.

Explanation:

mark as brainliest

Answer:

DUDE ITS THE THIRD ANSWER FROM THE TOP

....... HOPE THIS HELPS ✌

Answer:

Lo siento, no sé la respuesta, pero espero que lo hagas bien

1) Element 35 is a gas

2) It would be in period 7

3) It would be a non metal

4) At would look more like iodine because both of them are closer down the group.

5) It can act both as metal and non metal.

6) Atom is neutral while ions have a charge

7) The second ionization energy is larger because it would take more energy to remove an electron from a positive specie

a) Cl has the largest atomic radius

b) Ca has the largest atomic radius

c) Cl has the largest atomic radius

8) In order of increasing atomic radius we have; Ar < Kr < Xe

The periodic table is a tabular arrangement of the chemical elements, organized on the basis of their atomic number, electron configurations, and chemical properties.

The periodic table is one of the most important tools in chemistry, as it provides a convenient way to identify and categorize the elements. The elements are arranged in rows and columns, with elements in the same row having similar chemical and physical properties. The periodic table is used by scientists and students to understand the properties of elements, predict the chemical behavior of substances, and form hypotheses about new elements that have not yet been discovered.

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The effect of the decomposition of silver chloride on the percentage chloride concentration of the unknown is that it will reduce the calculated percentage concentration of chloride.

The decomposition of silver chloride, when exposed to sunlight, is given in the equation of reaction below:

2 AgCl (s) + hv ---------> 2 Ag (s) + Cl₂ (g)

In the determination of the percentage concentration of chloride of the unknown, the chloride present in the unknown is precipitated using silver ion to produce silver chloride as a precipitate. The silver chloride precipitate is then analyzed to determine the percent chloride concentration. Hence, the decomposition of silver chloride on exposure to sunlight will reduce the percentage concentration of chloride as some chloride will escape as gas.

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Answer:

The answer is 44.0095. We assume you are converting between grams CO2 and mole. You can view more details on each measurement unit: molecular weight of CO2 or mol This compound is also known as Carbon Dioxide.

Explanation:

Hope this Helps :)

Answer:2523.75 g

Explanation:

(25 mols)* (100.95g/1 mol)= 2523.75g magnesium nitride

- molar mass of magnesium nitride is 100.95 g/mol

The gravimetric factor for Br- using silver bromide is 0.425.

The gravimetric factor is an expression that is used to convert grams of a compound into grams of a single element.

It is expressed as a ratio of the formula weight (FW) of the substance that is being determined to that of a second substance that is weighed.

For example formula of silver bromide is AgBr and the formula mass of silver bromide is 188 g/mol

Formula mass of bromide ion = 80 g/mol

Gravimetric factor = 80/1188

Gravimetric factor = 0.425

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melting of wax is a physical reaction, because the same amount of wax exists before and after the change.

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The pressure exerted by a column of mercury that is about 760 mm high corresponds to approximately 0.987 atm.

To calculate the pressure exerted by a column of mercury, we can use the formula:

Pressure = density * gravity * height

Given:

Density of mercury = 13.6 g/cm³

Height of the mercury column = 760 mm = 76 cm

Acceleration due to gravity = 9.8 m/s²

First, we need to convert the height of the mercury column from centimeters to meters:

Height = 76 cm * (1 m / 100 cm) = 0.76 m

Now, we can calculate the pressure:

Pressure = 13.6 g/cm³ * 9.8 m/s² * 0.76 m

To ensure consistent units, we need to convert the density from grams per cubic centimeter (g/cm³) to kilograms per cubic meter (kg/m³):

Density = 13.6 g/cm³ * (1 kg / 1000 g) * (1 cm³ / (1e-6 m³))

Density = 13600 kg/m³

Plugging in the values into the pressure formula:

Pressure = 13600 kg/m³ * 9.8 m/s² * 0.76 m

Pressure = 99992.8 Pa

We can express the pressure in terms of atmospheric pressure:

1 atm = 101325 Pa (approximately)

To compare the pressure with atmospheric pressure, we can convert 99992.8 Pa to atm:

Pressure in atm = 99992.8 Pa / 101325 Pa/atm

Pressure in atm ≈ 0.987 atm

The pressure exerted by a column of mercury that is about 760 mm high corresponds to approximately 0.987 atm. Since atmospheric pressure near sea level is approximately 1 atm, this calculation supports the claim that atmospheric pressure near sea level is equivalent to the pressure exerted by a column of mercury about 760 mm high.

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Answer:

0.42 moles

Explanation:

Use Stoichiometry to solve

\(\frac{1.68 moles-of-Li}{} *\frac{1 mole-of-Li2O}{4 mole-of Li} =0.42 moles\)

Given the two different titration reactions, the volume of NaOH required to reach the equivalence point of both reaction will be different.

Balanced equation

HNO₃ + NaOH —> NaNO₃ + H₂O

From the balanced equation above,

MaVa / MbVb = nA / nB

(1 × 10) / (1 × Vb) = 1

10 / Vb = 1

Cross multiply

1 × Vb = 10

Vb = 10 mL

Balanced equation

H₂SO₄ + 2NaOH —> Na₂SO₄ + 2H₂O

From the balanced equation above,

MaVa / MbVb = nA / nB

(1 × 10) / (1 × Vb) = 1/2

10 / Vb = 1/2

Cross multiply

1 × Vb = 10 × 2

Vb = 20 mL

From the above calculations, we can conclude that different volume of NaOH will be required for the different reaction.

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The evidence collected in the activity suggests that burning food outside the body is a form of oxidation, which is a reaction between food and oxygen inside the body. This reaction is responsible for the production of energy and the release of waste products.

The orbital diagram of the compound has been shown in the  image attached.

The configuration of the molecular orbitals (MOs) within a molecule is shown in an orbital diagram of the molecule. Atomic orbitals from different molecules' individual atoms overlap to create molecular orbitals. According to the rules of quantum physics, electrons can fill these molecular orbitals.

Each chemical orbital is depicted in an orbital diagram by a line or a box, and the electrons are shown as arrows. The arrow's direction—upward for "spin up" and downward for "spin down"—indicates the spin of the electron.

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Answer:

6 moles

Explanation:

Looking at the coefficient of the reactants/ products, the ratio of Fe consumed to Fe₂O₃ produced is 4: 2.

Fe: Fe₂O₃

= 4: 2

= 2: 1

This means that the amount of Fe₂O₃ produced is half the amount of Fe consumed, in terms of moles.

Given that 12 moles of Fe are consumed,

amount of Fe₂O₃ produced

= 12 ÷2

= 6 moles

Answer:

see explanation

Explanation:

4Fe +3O2----------2Fe2O3

if we have 12 moles of Fe, we have 3X4 mole of Fe

but since 4 moles of Fe produce 2 moles of Fe2O3,6 then 3X 4 moles of Fe produce 3X2 moles of Fe2O3 or

6 moles.

One mole of Fe2O3 has a molar mass of (56X2) +(3X16) = 112+48 = 160

One mole Fe2O3 has a molar mass of 160 gm

6 moles of Fe2O3 have a mass of 160 X6 =960 gm

Answer:

C3H8 + 5O2 = 3Co2 + 4 H2o

Explanation:

we can balance this equation by algebric method ( ABC method)

Taking into account the definition of calorimetry, if the final temperature is 34 °C, the specific heat of the metal is 0.8381 J/gC.

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

When heat added or removed from a substance causes a temperature change in it without affecting its molecular structure, it is called sensible heat.

The expression that allows to calculate heat exchanges is:

Q = c× m× ΔT

where:

In this case, you know:

Replacing in the expression to calculate heat exchanges:

If two isolated bodies or systems exchange energy in the form of heat, the quantity received by one of them is equal to the quantity transferred by the other body. That is, the total energy exchanged remains constant, it is conserved.

Then, the heat that the gold gives up will be equal to the heat that the water receives. Therefore:

- Qmetal = + Qwater

- Specific heat of metal × 90 g× (34 C -98.6 C)= 4.186 J/gC× 120 g× (34 C - 24.3 C)

Solving:

- Specific heat of metal × 90 g× (34 C -98.6 C)= 4,872.504 J

Specific heat of metal × 5,814 gC= 4,872.504 J

Specific heat of metal = 4,872.504 J÷ 5,814 gC

Specific heat of metal = 0.8381 J/gC

Finally, the specific heat of the metal is 0.8381 J/gC.

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Explanation:

The IUPAC system of nomenclature aims to ensure

that every organic compound has a unique, unambiguous name.that the IUPAC name of any compound conveys the structure of that compound to a person familiar with the system.

One way of checking whether the name you have given to an alkane is reasonable is to count the number of carbon atoms implied by the chosen name. For example, if you named a compound 3‑ethyl-4‑methylheptane, you have indicated that the compound contains a total of 10 carbon atoms—seven carbon atoms in the main chain, two carbon atoms in an ethyl group, and one carbon atom in a methyl group. If you were to check the given structure and find 11 carbon atoms, you would know that you had made a mistake. Perhaps the name you should have written was 3‑ethyl-4,4‑dimethylheptane!

Answer:

There are 23 electrons in Fe3+

Answer:

C. Carbon monoxide

Explanation:

Chemical substance which has a triple covalent bond is carbon monoxide.

Covalent bond is defined as a type of bond which is formed by the mutual sharing of electrons to form electron pairs between the two atoms.These electron pairs are called as bonding pairs or shared pair of electrons.

Due to the sharing of valence electrons , the atoms are able to achieve a stable electronic configuration . Covalent bonding involves many types of interactions like σ bonding,π bonding ,metal-to-metal bonding ,etc.

Sigma bonds are the strongest covalent bonds while the pi bonds are weaker covalent bonds .Covalent bonds are affected by electronegativities of the atoms present in the molecules.Compounds having covalent bonds have lower melting points as compared to those with ionic bonds.

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Answer:

The rates of decay of radioactive elements

Explanation:

The age of a rock in years is called its absolute age. Geologists find absolute ages by measuring the amount of certain radioactive elements in the rock. When rocks are formed, small amounts of radioactive elements usually get included.

9. The specific heat capacity of the metal is approximately 0.47 J/g°C, 10. The specific heat of the metal is approximately 0.52 J/g°C.

9-To determine the specific heat capacity of the metal, we can use the formula:

q = mmetal × cmetal × ΔTmetal + mwater × cwater × ΔTwater

where q is the heat transferred, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature.

cmetal = q/(mmetal × ΔTmetal)

q = mwater × cwater × ΔTwater = (250.0 g) × (4.184 J/g°C) × (27.2°C - 24.3°C) = 3111.8 J

mmetal = 125.0 g

ΔTmetal = 27.2°C - 100.0°C = -72.8°C

cmetal = 3111.8 J/(125.0 g × -72.8°C) ≈ 0.47 J/g°C

10- To solve for the specific heat of the metal, we need to account for the heat capacity of the calorimeter as well. The heat transferred from the metal to the water is given by:

q = (mmetal × cmetal + Ccalorimeter) × ΔT + mwater × cwater × ΔT

cmetal = (q - Ccalorimeter × ΔT)/(mmetal × ΔT)

q = (1000.0 g) × (4.184 J/g°C) × (26.5°C - 24.9°C) = 1253.44 J

Ccalorimeter = 1101 J/°C

mmetal = 750.0 g

ΔT = 26.5°C - 100.0°C = -73.5°C

cmetal = (1253.44 J - 1101 J/°C × -73.5°C)/(750.0 g × -73.5°C) ≈ 0.52 J/g°C

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Answer:

True

Explanation:

In a chemical reaction, there's usually something to do with the composition of the substance. In a physical reaction, the effect could have something to do with appearance or smell.

Hope this helps!

A scientific question must lead to valuable scientific information.

option C.

The primary goal of a scientific question is to understand a phenomenon, process, or natural occurrence in a systematic and logical manner.

Through the scientific method, a scientific question helps researchers formulate testable hypotheses and design experiments to collect data that can answer the question. Once the data is analyzed, the scientific question should lead to valuable scientific information that advances our understanding of the world around us. It may also lead to new scientific questions for further investigation, but this is not a requirement for a question to be considered scientific.

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The sample that uses the substance that Jacob and Natalie should use to make a cold pack that will do the best job of keeping food cool is sample 2, because it absorbs the most energy (option B).

Endothermic refers to a chemical reaction that absorbs heat energy from its surroundings. This ensures that the temperature of the surroundings is cool or has a lower temperature.

According to this question, Jacob and Natalie are asked by their science teacher to design a warming or cooling device. They make use of certain substances, however, sample 2 has the lowest final temperature of -4°C.

This shows that sample 2 absorbs the most energy, hence, would be the best for keeping the food cool.

The incomplete question is as follows:

Jacob and Natalie are asked by their science teacher to design a warming or cooling device. They decide to design a cold pack that can be used to help keep food cool. Jacob and Natalie read about different substances that can be used inside cold packs and learn that most cold packs use endothermic reactions to cool objects.

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Answer

mass of solute = 48.2 g

Mass of solution = 363.4 g

Explanation

Given:

Mass of solvent = 315.2 g

mass percentage = 15.3 %

Required

mass of the solute

mass of the solution

Solution:

mass % = mass of solute/mass of solvent

15.3/100 = mass of solute/315.2 g

0.153 = mass of solute/315.2 g

mass of solute = 0.153 x 315.2

mass of solute = 48.2 g

Mass of solution = mass of solute + mass of solvent

Mass of solution = 48.2 g + 315.2 g

Mass of solution = 363.4 g

Answer:

ooooooooh .,.,.,.,.,.,

Answer:

True

TruePhysical change – A change in the size, shape, color, or state of matter of a substance. No new substance is produced.

When a solution is diluted with water, the ratio of the initial to final volumes of solution is equal to the ratio of final to initial molarities. The statement is True.

Concentration refers to the amount of a substance in a defined space. Another definition is that concentration is the ratio of solute in a solution to either solvent or total solution.

There are various methods of expressing the concentration of a solution.

Concentrations are usually expressed in terms of molarity, defined as the number of moles of solute in 1 L of solution.

Solutions of known concentration can be prepared either by dissolving a known mass of solute in a solvent and diluting to a desired final volume or by diluting the appropriate volume of a more concentrated solution (a stock solution) to the desired final volume.

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