Which statement describes asexual reproduction but not sexual
reproduction?
A. Offspring are genetically identical to the parent.
B. The process involves cell division by meiosis.
c. Offspring are genetically different from one another.
D. The process involves two parents.
Plz i’ll give brainless plz pick correct

Option A, median is the correct answer

The empitical formula shows the simplest ratio of elements in a compound (not the total number of atoms in the molecule).

So to find the empirical formula we need to calculate how many moles of each atom we have in this sample. Then we will see the ratio of each element.

We are given the mass, so to convert it to moles we use the molar mass. For this we go to the periodic table and see that the values for each element are:

Na (sodium): 22,99 g/mol

H (hydrogen): 1 g/mol

P (phosphorus): 25,81 g/mol

So we calculate the moles of each element as follows:

And as we see, for every 0.833 moles of Na we have the same number of moles of P, so the ratio of these elements in the molecule is 1 to 1.

As for the hydrogen:

So the ratio Na to H is 1 to 2.

Now we can write the empirical formula as follows=

Explanation:

The graphite anodes are suspended into the brine. During electrolysis, Cl ions are oxidized at the anode and chlorine gas goes out of the cell, while sodium ions are reduced at the mercury cathode forming sodium amalgam. ... Hydrogen gas is obtained as a by–product at the cathode.

Answer:

The heat released when the temperature of 60 g of water decreases from 75 degrees Celsius to 27 degrees Celsius is -12,049.92 J.

Explanation:

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

Sensible heat is the amount of heat that a body absorbs or releases without any changes in its physical state or phase change. Sensible heat is measured by the expression:

Q = c * m * ΔT

Where Q is the heat exchanged by a body of mass m, constituted by a substance of specific heat c and where ΔT is the variation in temperature.

In this case:

Replacing:

Q= 4.184 \(\frac{J}{g*C}\) *60 g* (-48 C)

Q= -12,049.92 J

The heat released when the temperature of 60 g of water decreases from 75 degrees Celsius to 27 degrees Celsius is -12,049.92 J.

The main function of using a virtual spectrometer in order to analyze astronomical bodies in space is to find the chemical composition of planets and stars.

This refers to the instrument that is used to observe the color separation of light in a controlled experiment.

Hence, we can see that another reason for the use of a virtual spectrometer to make an analysis of astronomical bodies is to indicate the speed and direction of a star or galaxy as it spreads incoming beams of light into different spectrums.

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Answer:

B, wax melting

Explanation:

When wax melts, the form of matter is the only thing that changes. Wax in this case goes from a solid to a liquid, and this process can be reversed when it cools. Hence labeling it a physical change instead.

Answer:

to increase their number of species on the Earth and want to go long and long

A. Durability is an advantage of synthetic fibre over natural fibre. Synthetic fibres are made from man-made materials and are designed to be strong and durable.

They can withstand wear and tear better than natural fibres, making them ideal for use in items such as clothing, upholstery, and carpets. Synthetic fibres are also resistant to many chemicals and can hold their shape well, even after multiple washings. This makes them a popular choice in industries where durability is a key factor, such as sports and outdoor gear. However, the non-biodegradable nature of synthetic fibres also presents environmental challenges, as they do not break down easily and can contribute to pollution if not properly disposed of.

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Answer:

117 grams H₂O

Explanation:

To find the amount, you need to (1) convert from moles HNO₃ to moles H₂O (via mole-to-mole ratio from equation) and then (2) convert from moles H₂O to grams (via molar mass from periodic table). The final answer should have 3 sig figs according the the given value (19.5).

S + 6 HNO₃ --> H₂SO₄ + 6 NO₂ + 2 H₂O

Molar Mass (H₂O): 15.999 g/mol + 2(1.008 g/mol)
Molar Mass (H₂O): 18.015 g/mol

19.5 moles HNO₃         2 moles H₂O          18.015 grams
--------------------------  x  ----------------------  x  ----------------------  = 117 grams H₂O
                                    6 moles HNO₃           1 mole H₂O

Option 3 accurately represents the essence of an ethogram as an inventory of species-specific behaviors.

An ethogram can be best described as an inventory of the behavior of a particular species. It is a systematic catalog or list of behaviors exhibited by a specific animal species.

An ethogram provides a comprehensive overview of the behaviors displayed by the animals under study, documenting various activities, actions, and patterns of behavior.

While options 1 and 2 are related to visual representations or descriptions of behavior, they do not capture the comprehensive nature of an ethogram. Option 4 refers specifically to behaviors observed in response to an experimental intervention, which is more narrow in scope compared to an ethogram. Therefore, option 3 accurately represents the essence of an ethogram as an inventory of species-specific behaviors.

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The statement about thermal energy and temperature that is correct is option d: Water in the Pacific Ocean has more thermal energy and a lower temperature.

Thermal energy is the total kinetic energy of the particles in a substance, and it depends on the mass, temperature, and specific heat capacity of the substance. The Pacific Ocean contains an enormous amount of water, so it has a much greater thermal energy than a cup of hot coffee.

However, the temperature of the coffee is much higher than the temperature of the ocean water because coffee is typically served at temperatures around 60-80°C (140-176°F), while the temperature of the ocean's surface water is typically around 15-25°C (59-77°F).

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See full question below

Compare a cup of hot coffee with the Pacific Ocean. Which statement about thermal energy and temperature is correct?

Water in the Pacific Ocean has more thermal energy and a higher temperature.

Water in the Pacific Ocean has less thermal energy and a lower temperature.

Water in the Pacific Ocean has less thermal energy and a higher temperature

Water in the Pacific Ocean has more thermal energy and a lower temperature.

The moles can be defined as the mass of the substance with respect to molar mass. The moles of potassium nitrate is 1 mol.

The moles of a compound can be calculated from:

\(\rm Moles=\dfrac{Mass}{Molar\;mass}\)

The molarity can be defined as the moles of solute in a liter of solution.

The molarity can be expressed as:

\(\rm Molarity=\dfrac{Moles\;\times\;1000}{Volume\;(mL)}\)

The molarity of potassium nitrate solution is 2 M, and the volume is 500 mL.

The moles of potassium nitrate is given as:

\(\rm 2\;M=\dfrac{Moles\;\times\;1000}{500\;mL}\\ Moles=\dfrac{2\;\times\;500}{1000}\;mol\\ Moles=1\;mol\)

The moles of potassium nitrate in 2 M, 500 mL solution are 1 mol.

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Answer:

120 cubic meters

Explanation:

Three-dimensional measurement is basically any unit of measurement cubed. Since grams is just to the first power, it is not considered three-dimensional. miles per hour is a fraction, so it is not a three-dimensional measurement of volume. 120 units are to the first power, so you are left with 120 cubic meters, which is a three-dimensional measurement of volume. Also, another way to solve this is to look at the types of measurement. The cubic meter is a measure of volume. Grams are a measurement of mass. Miles per hour is a measurement of speed. Units can be any type of measurement because you can substitute units instead of any measurement in questions.

Answer:

ultraviolet .rays....hope am correct

Answer:

C

Explanation:

There are 1.08 x 10^23 molecules of H2 in a 5.0 L sample at the same temperature and pressure as the 5.0 L sample of O2.

According to the ideal gas law, PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin. At the same temperature and pressure, two different gases will have the same value of n/V. This quantity is also known as the molar concentration or simply concentration.

Therefore, we can use the concentration of O2 to determine the number of molecules in 5.0 L of H2:

n/V = (1.08 x 10^23 molecules) / (5.0 L) = 2.16 x 10^22 molecules/L

Since the volume of H2 is also 5.0 L and the concentration is the same, the number of molecules of H2 can be found by:

n = (2.16 x 10^22 molecules/L) x (5.0 L) = 1.08 x 10^23 molecules

Therefore, there are 1.08 x 10^23 molecules of H2 in a 5.0 L sample at the same temperature and pressure as the 5.0 L sample of O2.

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1.78 grams of silver can be produced from 1.40 g silver nitrate and excess copper. The balanced chemical equation for the reaction of copper with silver nitrate (use cu2) is as follows: Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag

To determine how many grams of silver can be produced from 1.40 g of silver nitrate and excess copper, we first need to calculate the limiting reactant.

The stoichiometry of the reaction is such that 2 moles of silver nitrate react with 1 mole of copper to produce 2 moles of silver. The molar mass of silver nitrate is 169.87 g/mol while that of copper is 63.55 g/mol,

therefore, the number of moles of silver nitrate present in 1.40 g can be calculated as follows:Number of moles of silver nitrate = mass/molar mass= 1.40/169.87= 0.008240 molSimilarly, the number of moles of copper required to react with this quantity of silver nitrate is 0.004120 mol (half of the number of moles of silver nitrate).

Since there is an excess of copper, it will not limit the reaction and hence the limiting reactant is silver nitrate.To calculate the mass of silver produced, we use the molar mass of silver, which is 107.87 g/mol.Mass of silver produced = number of moles of silver x molar mass= 0.01648 x 107.87= 1.78 g

Therefore, 1.78 grams of silver can be produced from 1.40 g silver nitrate and excess copper.

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Answer:

I think its b be ause it looks like a better answer and it has some detail to it

The amount of aluminum that reacted is approximately 0.069 grams.

To determine the mass of aluminum that reacted, we need to use the ideal gas law and consider the partial pressure of hydrogen gas. First, we calculate the pressure of hydrogen gas by subtracting the partial pressure of water vapor from the total pressure. The pressure of hydrogen gas is 751 mmHg - 26.8 mmHg = 724.2 mmHg.

Next, we convert the pressure of hydrogen gas from mmHg to atm by dividing by 760 mmHg/atm, giving us 0.953 atm.

Using the ideal gas law equation PV = nRT, we can calculate the number of moles of hydrogen gas. The volume of hydrogen gas is given as 37.3 mL, which we convert to liters by dividing by 1000 mL/L, giving us 0.0373 L. The temperature is given as 27°C, which we convert to Kelvin by adding 273.15, giving us 300.15 K. The ideal gas constant R is 0.0821 L∙atm/(mol∙K).

Plugging the values into the ideal gas law equation, we can solve for the number of moles of hydrogen gas: (0.953 atm) * (0.0373 L) = n * (0.0821 L∙atm/(mol∙K)) * (300.15 K).

Simplifying the equation, we find that the number of moles of hydrogen gas is approximately 0.00139 moles.

Since the balanced chemical equation between aluminum and hydrochloric acid is 2Al + 6HCl → 2AlCl₃ + 3H₂, we can conclude that 2 moles of aluminum react to produce 3 moles of hydrogen gas.

Using this ratio, we can calculate the number of moles of aluminum that reacted: (0.00139 mol H₂) * (2 mol Al / 3 mol H₂) = 0.000926 moles Al.

Finally, we can convert moles of aluminum to grams using the molar mass of aluminum (26.98 g/mol): (0.000926 mol Al) * (26.98 g/mol) ≈ 0.069 g Al.

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To create a buffer solution that maintains a pH of around 7.54, you should choose option (a) CH₃COOH and NaCH₃COO.

A buffer solution is a mixture of a weak acid and its conjugate base or a weak base and its conjugate acid. It is designed to resist significant pH changes when small amounts of an acid or a base are added.

In this case, CH₃COOH (acetic acid) is a weak acid, and NaCH₃COO (sodium acetate) is its conjugate base. The weak acid and its conjugate base work together to resist pH changes, as the acid can neutralize added base and the conjugate base can neutralize added acid. The pH of the buffer solution can be calculated using the Henderson-Hasselbalch equation: pH = pKa + log([A⁻]/[HA]), where [A⁻] is the concentration of the conjugate base and [HA] is the concentration of the weak acid.

The other options are not suitable for creating a buffer with a pH of 7.54. Option (b) HClO and KClO consist of a weak acid and its conjugate base, but their pKa values would not result in the desired pH. Options (c) NaOH and HCN and (d) HNO₃ and KNO₃ consist of a strong base and a weak acid or a strong acid and its conjugate base, respectively, which do not create an effective buffer solution.

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Answer:

deez nuets

Explanation:

bf gm Jr rj if dl if did fll j fll kd golf du is no u to

The pair that cannot be mixed together to form a buffer solution is: a) NaClO, HNO3.

A buffer solution is a solution that resists changes in pH when small amounts of an acid or a base are added. To form a buffer solution, you need a weak acid and its conjugate base, or a weak base and its conjugate acid.

In the given options:

a) NaClO, HNO3 - NaClO is a salt of a weak acid (HClO) and a strong base (NaOH), while HNO3 is a strong acid. Mixing a strong acid with the salt of a weak acid and a strong base does not form a buffer solution.

b) NH2CH3, HCl - NH2CH3 is a weak base, and HCl is a strong acid. When mixed together, they form the conjugate acid (NH3CH3+) of the weak base, which can act as a buffer.

c) HC2H3O2, NaOH - HC2H3O2 is a weak acid, and NaOH is a strong base. When mixed together, they form the conjugate base (C2H3O2-) of the weak acid, which can act as a buffer.

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Answer:

boron

Explanation:

boron is a metaloid meaning it has the property of a metal and a non metal located where metals and non metals meet on the periodic table

Answer:

The answer is boron, the second answer is chlorine

Explanation:

edge 2022, have a great day h0mies

Answer:

1.T

2.I

Explanation:

hope it help

#carry on learning

The object and description that matches is Object 2 and T.

Object 1 has no matching description.

A Fish aquarium filter is a filter whose function is to clean the water of debris, removes the toxic buildup of ammonia and nitrates, and aerates the water so that fish can in a conducive environment and breathe properly

An engine oil filter is a filter whose function is to filter and remove contaminants that may be present in the engine oil, transmission oil, lubricating oil, or hydraulic oil in order for proper functioning of the engine.

Therefore, the object and description that matches is Object 2 and T.

Object 1 has no matching description.

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Answer:

32.711

Explanation:

1 yard = 0.0009144 km

1 week = 168 hrs

6.01 x 10^6 / 168 = 35,773.81 yds/hr

                            =  32.711 km/hr    

Part 1: This diagram depicts an endothermic reaction. Because the products have a higher potential energy than the reactants, energy is absorbed during the reaction.

Furthermore, the energy level of the products is greater than the reaction's activation energy, showing that energy must be given to the system for the reaction to occur.

Part 2: To calculate the total enthalpy change (H) from the diagram, subtract the energy of the reactants from the energy of the products. Because the energy of the products is greater than the energy of the reactants in an endothermic reaction, H will be positive.

To calculate the activation energy (Ea) from the diagram, subtract the energy of the reactants from the energy of the transition state. The activation energy is the smallest amount of energy required for the reaction to occur, hence it is the difference in energy between the reactants and the highest point on the diagram.

Ea will be positive in this situation because energy must be added to the system to achieve the transition state.

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Answer:

Explanation:The mass remains the same before the reaction and after. A chemical reaction takes place when vinegar and baking soda are mixed. ..If the carbon dioxide gas is contained, the mass of the substances will stay the same according to the Law of Conservation of Mass. If the gas is allowed to escape, the mass will be less.

The substance in the image above would be classified as a mixture of elements (option E).

A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.

According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.

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Answer: Mass measures the amount of matter in a substance or an object. The basic SI unit for mass is the kilogram (kg). Volume measures the amount of space that a substance or an object takes up.

happy to help ☀️Keep on shining☀️

Explanation:

Answer:

objectives

Explanation: