Some organisms reproduce asexually and have only one parent. Others reproduce sexually and have two parents. How does the genetic information of a new organism produced through sexual reproduction compare to the genetic information of its parents?
A.It is an exact copy.
B.It is completely different.
C.It is opposite from its parents.
D.It is a blend of the genetic information of its parents.

Answer:

Sr

Explanation:

Sr has an ionization of 550 whereas Ba has an ionization of 503

Answer:

1. The combined number of protons and neutrons remains constant.

2. There are two atoms with mass numbers of 2.

3. It is the number of protons plus neutrons.

4. A nucleus with a greater mass than any of the reactants will be produced.

5. Fusion reactions in the sun convert small amounts of matter into large amounts of energy.

Explanation: I couldn't see the comments so I guess some ppl can't either but here you go got them all correct! :)

Th sun produces energy through fusion reaction by converting small amount of matter into larger amounts of energy.

The sun is able to produce energy because protons of hydrogen atoms present in the sun collide violently in the sun's core and fuse together leading to the formation helium atom.

This process of fussion is referred to as a PP (proton-proton) chain reaction, and it emits an enormous amount of energy

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The temperature inside the freezer is approximately -164°C.

To solve this problem, we can use the combined gas law equation:

\((P1V1)/T1 = (P2V2)/T2\)

where P is the pressure, V is the volume, and T is the temperature of the gas.

We know that the initial volume of the balloon is 145 mL and the final volume is 35 mL. We also know that the initial temperature is 25°C or 298 K, and we need to find the final temperature.

Assuming the pressure of the gas remains constant, we can rearrange the combined gas law equation to solve for the final temperature:

\(T2 = (P2V2/T1)(P1/V1)\)

Plugging in the values we know, we get:

\(T2 = (1 atm * 35 mL/298 K)(1 atm/145 mL) = 0.0808 atm/mL\)

Multiplying both sides by 298 K and dividing by 0.0808 atm/mL, we get:

T2 = 109.15 K or approximately -164°C

Therefore, the temperature inside the freezer is approximately -164°C.

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The solution would have a freezing point of - 5.8 °C.

We have to note that in this case, we are dealing with the freezing point of the solution and this is one of the colligative properties that we have. We do know that;

ΔT = K m i

ΔT = Change in the temperature

K = freezing constant

m = molality

i = Vant Hoff factor

Then;

Number of moles of the calcium nitrate = 0.725 g/164 g/mol

= 0.0044 moles

Molality of the solution = 0.0044 moles/4.25 * 10^-3 Kg

= 1.04 m

Then we have;

ΔT =  1.86 * 1.04 * 3

= 5.8 °C

Then we have the new freezing point as;

O °C - 5.8 °C = - 5.8 °C

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Answer:

the amount of water vapor in the air compared to the amount it can hold

Explanation:

By definition, relative humidity is equal to the partial pressure of water divided by the total amount of water that the air can hold at that temperature. The last one basically restates the definition. (Partial pressure is the number of particles of a substance divided by the total number of particles.)

(Have a nice day too! Don't hesitate to ask any questions)

Answer:

0. 000115

Explanation:

A percentage is defined as a ratio with a basis of 100 as total substance. Convert a percentage to decimal implies to divide the percentage in 100 because decimal form has as basis 1.

For the isotopic forms:

1H: 99.98% → As percent.

99.98% / 100 = 0.9998 → As decimal form.

2H: 0.0115% → As percent.

0.0115% / 100 = 0. 000115→ As decimal form.

The percent should be 0. 000115

For the isotopic forms:

1H: 99.98% → As percent.

Now

\(99.98\% \div 100\)= 0.9998 → As decimal form.

Now

2H: 0.0115% → As percent.

And,

\(0.0115\% \div 100\)= 0. 000115→ As decimal form.

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Answer:

Non-equilibrium thermodynamics is a branch of thermodynamics that deals with physical systems that are not in thermodynamic equilibrium but can be described in terms of variables (non-equilibrium state variables) that represent an extrapolation of the variables used to specify the system in thermodynamic equilibrium.

Explanation:

The pressure, in atmospheres, exerted by a 0.100 mol sample of oxygen in a 2.00 L container at 273 °C is 2.24 × 10⁰ atm.

The pressure of a substance can be calculated using the following formula;

PV = nRT

According to this question, the pressure, in atmospheres, exerted by a 0.100 mol sample of oxygen in a 2.00 L container at 273 °C can be calculated as follows:

P × 2 = 0.1 × 0.0821 × 546

2P = 4.48266

P = 2.24 × 10⁰ atm

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Answer:

The Answer will be provided below, please pay attention in class next time so that you don't have to be in a hurry like you are in now.

Explanation: The correct option is:

Both fossil fuels and wind energy can be used to produce electricity. However, burning fossil fuels does pollute the atmosphere, while using Earth's wind does not. Both fossil fuels and wind energy contribute to climate change, but the use of fossil fuels is much more damaging to the environment than the use of wind power.

Fossil fuels are non-renewable sources of energy that are formed over millions of years by the decomposition of organic matter. They release harmful greenhouse gases when burned, contributing to climate change. In contrast, wind energy is a renewable source of energy that uses turbines to harvest the power of wind. Wind energy does not produce any emissions, making it an environmentally friendly alternative to fossil fuels. While wind turbines can have some impacts on wildlife and habitats, the impact is much less severe than the effects of fossil fuel extraction and burning.

Added Part: Fossil fuels are non-renewable sources of energy that are derived from the remains of plants and animals that died millions of years ago. These sources include coal, oil, and natural gas. Wind energy, on the other hand, is a renewable source of energy that is generated by the kinetic energy of wind.

Here are some comparisons between fossil fuels and wind energy:

Environmental Impact: Fossil fuels have a significant negative impact on the environment. Burning fossil fuels produces greenhouse gases that contribute to climate change. The extraction of fossil fuels also has negative impacts on the air, water, and soil. Wind energy, however, has a very small environmental footprint. Wind turbines do not produce any emissions and do not require any water to generate electricity.

Energy Availability: Fossil fuels are abundant and have been the primary source of energy for decades. On the other hand, wind energy is a relatively new source of energy and the technology is still developing. However, the availability of wind energy is significant, as wind is a renewable source that is constantly available.

Sustainability: Fossil fuels are non-renewable, which means they will eventually run out. As the demand for energy continues to increase, the availability of fossil fuels will decrease. Wind energy is a renewable source of energy that will never run out.

Here are some pros and cons of both fossil fuels and wind energy:

Fossil Fuels:

Pros:

Reliable source of energy

High energy density

Large global infrastructure

Cons:

Non-renewable source of energy

Significant environmental impact

Price instability

Wind Energy:

Pros:

Renewable source of energy

Small environmental footprint

Low operating costs

Cons:

High initial costs for building wind turbines

Wind is an inconsistent source of energy

Can create noise pollution for surrounding communities

Answer:

Remember

A sparkler burning is an exothermic reaction

Sparkler burning is an exothermic reaction and so the sign of the ΔH must be negative (–∆H) indicating that heat was released.

Ice melting is an endothermic reaction (+∆H) because the ice absorbs (heat) energy, which causes a change to occur.

Acetone evaporating from skin is an endothermic reaction (+∆H). Because, molecules that are evaporating are absorbing heat. So, evaporation is called endothermic.

Considering the Charles's Law, if you decrease the temperature of the gas by turning down the flame, the volume of the 400 L ballon decreases.

Charles's Law consists of the relationship between the volume and temperature of a certain amount of ideal gas, which is maintained at a constant pressure.

For a certain amount of gas at a constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases because the temperature is directly related to the energy of movement of the gas molecules.

That is, the volume is directly proportional to the temperature of the gas.

In this case, taking into account the Charles's Law, at constant pressure, if you decrease the temperature of the gas by turning down the flame, the volume of the 400 L ballon decreases.

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Cl2 is the limiting reactant and the unreacted Al is 1.7 g

We know that the reaction equation is;

2Al + 3Cl2 ------> 2AlCl3

Now we know that;

Number of moles of Al = 2.7/27 g/mol

= 0.1 moles

Number of moles of Cl2 = 4.0 g/71 g/mol

= 0.056 moles

If 2 moles of Al reacts with 3 moles of Cl2

0.1 moles of Al reacts with 0.1 * 3/2

= 0.15 moles

The Cl2 is the limiting reactant

Now;

2 moles of Al reacts with 3 moles of Cl2

x moles of Al reacts with 0.056 moles of Cl2

x = 0.037 moles

Moles of unreacted Al = 0.1 moles - 0.037 moles

= 0.063 moles

Mass of unreacted Al =  0.063 moles * 27 g/mol

= 1.7 g

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In this question, we have to set up the properly balanced reaction first:

4 NH3 + 5 O2 -> 4 NO + 6 H2O

Now that the reaction is properly balanced, we can see that the molar ratio between NH3 and NO is 4:4, the same number of moles of NH3 will be the same number of moles of NO

We have:

15.8 grams of NH3, molar mass = 17g/mol

Let's find how many moles we have:

17.03g = 1 mol

15.8g = x moles

x = 0.93 moles of NH3, therefore we will also have 0.93 moles of NO being produced, but we have to know how much of mass does it represent, we will use NO molar mass, 30.01g/mol

30.01g = 1 mol

x grams = 0.93 moles

x = 27.91 grams of NO in 0.93 moles

27.91g is the theoretical yield

21.8g is the actual yield

The percent yield we can calculate with the following formula:

%yield = actual yield/theoretical yield

%yield = 21.8/27.91

%yield = 0.781

The percent yield is 78.10%

Answer:

                                                                2CO(g) + O2(g) ⇌ 2CO2(g)

Increasing the concentration of CO -         ↓         ↓                 ↑

Increasing the concentration of CO2 -       ↑         ↑                 ↓

Explanation:

The given reaction is

2CO(g) + O2(g) ⇌ 2CO2(g)

a) When the concentration of CO is increased, the stress is relieved as the reaction that consumes the added CO occurs more rapidly than its reverse reaction, for example., the forward reaction rate increases. The equilibrium will shift in favor of the product. However, the concentration of reactants (CO and O2) decreases and product concentration (CO2) increases.

b) When the concentration of CO2 is increased, the stress is relieved as the reaction that consumes the added CO2 occurs more rapidly than its reverse reaction, for example., the rate of backward reaction increases. The equilibrium will shift in favor of the reactant. Therefore, the concentration of reactants (CO and O2) increases, and the product concentration (CO2) decreases.

Hope this helps!

The cobalt is the anode and the lead is the cathode

A salt bridge is a component of a galvanic cell that connects the two half-cells and allows the transfer of ions between them. Second, the salt bridge helps to maintain the charge balance in the two half-cells.  

A galvanic cell, also known as a voltaic cell, is a device that converts chemical energy into electrical energy.

It consists of two half-cells that are connected by a salt bridge or a porous barrier, which allows for the transfer of ions between the two solutions without mixing them. Each half-cell consists of an electrode and an electrolyte solution.

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The change in the temperature of the gas, given that the volume is held constant is 63 °C

Let's begin by obtaining the new temperature of the gas. This can be obtained as follow:

P₁ / T₁ = P₂ / T₂

4.62 / 300 = 5.59 / T₂

Cross multiply

4.62 × T₂ = 300 × 5.59

Divide both side by 4.62

T₂ = (300 × 5.59) / 4.62

T₂ = 363 K

Subtract 273 to obtain answer in °C

T₂ = 363 – 273 K

T₂ = 90 °C

Finally, we shall determine the change in the temperature. This is illustrated below:

ΔT = T₂ – T₁

ΔT = 90 – 27

ΔT = 63 °C

The, the change in the temperature is 63 °C

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Complete question:

See attactched photo

Answer:

Hydrogen fuel typically reacts with oxygen in a chemical reaction to produce water (H2O) as the main product. The chemical equation for this reaction is:

2H2 + O2 → 2H2O

The reaction releases energy, which can be harnessed to power engines or generate electricity. When hydrogen fuel is burned in an engine or fuel cell, the only byproduct is water vapor, which is harmless to the atmosphere.

However, the production of hydrogen fuel can have environmental impacts if it is not produced using renewable energy sources. The most common method of producing hydrogen involves using natural gas, which releases carbon dioxide and other greenhouse gases into the atmosphere. Therefore, it is important to consider the source of the hydrogen fuel and the environmental impact of its production when evaluating its benefits for reducing emissions and improving air quality.

The chemical equation for the combustion of hydrogen can be represented as follows: 2H₂ + O₂ → 2H₂O

In this reaction, two molecules of hydrogen gas (H₂) combine with one molecule of oxygen gas (O₂) to form two molecules of water vapor (H₂O). The reaction releases a significant amount of energy in the form of heat.

The products of the combustion of hydrogen, which are water molecules, do not have significant adverse effects on the atmosphere. Water vapor is a natural component of the Earth's atmosphere, and its presence is essential for various natural processes, such as the water cycle.

However, it is important to note that the combustion of hydrogen as a fuel can indirectly affect the atmosphere in certain scenarios. One consideration is the generation of the primary energy used to produce the hydrogen fuel.

Additionally, the transportation and storage of hydrogen as a fuel may present challenges. If there are any leaks or improper handling, hydrogen gas can contribute to the formation of local air pollution. However, these issues can be managed through appropriate safety measures and technology advancements.

Overall, the combustion of hydrogen fuel with oxygen produces water as a product, and the water vapor does not have direct adverse effects on the atmosphere.

However, the environmental impact associated with hydrogen as a fuel depends on the methods used for its production and transportation. Sustainable production methods, such as electrolysis using renewable energy sources, can minimize the environmental impact of hydrogen fuel.

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1) Mass percent

2) List known values

Sample: 0.965 kg

2) Plug in known values and solve for grams of solute.

3) Convert grams of solute to moles

The molar mass of the unknown compound is 25.2 g/mol

There are 10.45 moles of the unknown compound present in the sample.

Answer:

true

Explanation:

The mole ratio of the CO2 to LiOH is 1:2

The mole ratio is 1:2.

If 1 mole of CO2 reacts with 2 moles of LiOH

x moles of CO2 will react with 12.5 moles of LiOH

x = 6.25 moles

If 2 moles of LiOH produces 1 mole of water

12.5 moles of LiOH will produce 12.5 * 1/2

= 6.25 moles of water

Mole ratio of water to calcium carbide is 2:1

Number of moles of CaC2 = 27 g/64 g/mol

= 0.42 moles

1 mole of CaC2 reacts with 2 moles of H2O

0.42 moles of CaC2 reacts with 0.42 * 2/1

= 0.84 moles

If 1 mole of CaC2 lead to the formation of 1 mole of C2H2

Then 0.42 moles of C2H2 is formed

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Approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.

To determine the number of molecules of HCl required to form 34.52 g of MgCl₂, we need to use the molar mass and stoichiometry of the balanced equation:

Mg(OH)₂(s) + 2 HCl(aq) → 2 H₂O(l) + MgCl₂(aq)

The molar mass of MgCl₂ is 95.21 g/mol.

First, we need to calculate the number of moles of MgCl₂ formed:

Moles of MgCl₂ = mass of MgCl₂ / molar mass of MgCl₂

Moles of MgCl₂ = 34.52 g / 95.21 g/mol

Moles of MgCl₂ = 0.363 mol

According to the balanced equation, the stoichiometric ratio between HCl and MgCl₂ is 2:1. Therefore, the moles of HCl required can be calculated as follows:

Moles of HCl = 2 * Moles of MgCl₂

Moles of HCl = 2 * 0.363 mol

Moles of HCl = 0.726 mol

To calculate the number of molecules, we need to use Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol.

Number of molecules of HCl = Moles of HCl * Avogadro's number

Number of molecules of HCl = 0.726 mol * 6.022 x 10^23 molecules/mol

Number of molecules of HCl = 4.37 x 10^23 molecules

Therefore, approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.

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Explanation:

Determine the pH of all solutions

A: pH = -log[H3O+]

= -log[3.5*10^-5]

= 4.46

B: pH = -log[H3O+]

= -log[3.5*10^-4]

= 3.46

C: pH = -log[OH-]

= -log[1.3*10^-10]

= 9.89

D: pH = -log[OH-]

= -log[6.2*10^-11]

= 10.21

Answer:

A: answer is D

B: answer is D

C: answer is D

D: answer is B

Liters and millilitres are the most common units of volume.

The volume equal to a gallon of gasoline is 3785 m L which is equal to 3.785 L.

The volume equal to pint of milk is 473...

A a cup of water is 0.24 L

Answer:

it's used to measure intensity of radioactivity in a sample of material

Answer:

A substance that dissociates into ions in solution acquires the capacity to conduct electricity. Sodium, potassium, chloride, calcium, magnesium, and phosphate are examples of electrolytes.

Answer From Gauth Math

The actual result of the calculation is 101.920. Therefore, none of the options provided in the question matches the correct answer.

To calculate the given expression: (43 × 2.310) + (7 × 0.370), we perform the multiplication first and then add the results.

Multiplying the counted numbers:

43 × 2.310 = 99.330

Multiplying the measured numbers:

7 × 0.370 = 2.590

Now, we add the results:

99.330 + 2.590 = 101.920

The correct answer is not provided in the given options: a) 38.35, b) 38.4, c) 38, or d) 40.

The actual result of the calculation is 101.920. Therefore, none of the options provided in the question matches the correct answer.

It's important to note that when performing calculations, it is crucial to accurately follow the order of operations (multiplication before addition) and ensure precision when dealing with decimal numbers.

In this case, the correct answer is not among the options provided, and the accurate result is 101.920.

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Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

\(n = \frac{N}{L} \\ \)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

\(n = \frac{1.8 \times {10}^{24} }{6.02 \times {10}^{23} } = 2.990.. \\ \)

We have the final answer as

Hope this helps you