with a well labeled diagram explain the stages of meiosis and mitosis​

When 3.66 g of KOH (∆Hsol = -57.6 kJ/mol) is dissolved in 150.0 mL of solution, it causes a temperature change of 5.87 °C.

The enthalpy of solution of KOH is -57.6 kJ/mol. We can calculate the heat released by the solution (Qr) of 3.66 g of KOH considering that the molar mass of KOH is 56.11 g/mol.

\(3.66g \times \frac{1mol}{56.11g} \times \frac{(-57.6kJ)}{mol} = -3.76 kJ\)

According to the law of conservation of energy, the sum of the heat released by the solution of KOH (Qr) and the heat absorbed by the solution (Qa) is zero.

\(Qr+Qa = 0\\\\Qa = -Qr = 3.76 kJ\)

150.0 mL of solution with a density of 1.02 g/mL were prepared. The mass (m) of the solution is:

\(150.0 mL \times \frac{1.02g}{mL} = 153 g\)

Given the specific heat capacity of the solution (c) is 4.184 J/g･°C, we can calculate the change in the temperature (ΔT) of the solution using the following expression.

\(Qa = c \times m \times \Delta T\\\\\Delta T = \frac{Qa}{c \times m} = \frac{3.76 \times 10^{3}J }{\frac{4.184J}{g.\° C } \times 153g} = 5.87 \° C\)

When 3.66 g of KOH (∆Hsol = -57.6 kJ/mol) is dissolved in 150.0 mL of solution, it causes a temperature change of 5.87 °C.

Learn more: https://brainly.com/question/4400908

Answer:

6.36  g AgCl

Hope this helps!

Just connect an ammeter with circuit.

Answer:

Explanation:

Figure 6. An instant cold pack consists of a bag containing solid ammonium nitrate and a second bag of water. When the bag of water is broken, the pack becomes cold because the dissolution of ammonium nitrate is an endothermic process that removes thermal energy from the water.

The mass of the plastic bag, baking soda, and vinegar before the reaction was equal to the mass after the reaction. Option A.

Atoms, mass, and energy are conserved during chemical reactions. Even though their forms may change after reactions.

For a reaction involving vinegar and baking soda, the equation can be expressed as:

vinegar + baking soda ---> carbon dioxide + sodium acetate + water

or

\(CH_3COOH (aq) + NaHCO_3 (aq) --- > CH_3COONa (aq) + H_2O (l) + CO_2 (g)\)

In other words, sodium acetate, water, and carbon dioxide gas are produced in the reaction. Assuming that the reaction vessel is not sealed, the gas would escape away from the vessel.

Since the vessel was sealed, the mass of the plastic bag, baking soda, and vinegar before the reaction will be equal to the sum of the masses of the plastic bag and the products after the reaction.

This will show that the number of atoms present before the reaction is the same as the number of atoms present after the reaction.

More on the law of conservation of atoms can be found here: https://brainly.com/question/20635180

#SPJ1

Lead 214 emits then beta electrons to transform into bismuth 214 and polonium 214, which produces lead 210 through the emission of a third alpha particle. This series of transformations take place in a time span roughly equal to an hour.

Hope this helps, if I am right, brainliest? :))))

One action by industry leaders that would directly address the causes of global warming is to reduce greenhouse gas emissions.

Greenhouse gases, such as carbon dioxide, methane, and nitrous oxide, trap heat in the atmosphere and contribute to global warming. Industries that are major contributors to greenhouse gas emissions include transportation, electricity generation, and manufacturing.

Industry leaders can take a variety of steps to reduce their greenhouse gas emissions, such as investing in renewable energy sources, increasing energy efficiency, and implementing carbon capture and storage technologies. They can also encourage their suppliers and customers to adopt more sustainable practices, and advocate for policy changes that support the transition to a low-carbon economy.

By taking action to reduce greenhouse gas emissions, industry leaders can directly address the causes of global warming and help mitigate its impacts on the environment and society.

To know more about Greenhouse gas emissions , visit :

https://brainly.com/question/26255495

#SPJ1

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\\)

From the question

mass = 10 g

volume = 2 mL

We have

\(density = \frac{10}{2} \\ \)

We have the final answer as

Hope this helps you

Answer:

5.0 g/mL

Explanation:

Answer:

True

Explanation:

Aromatic rings undergo nucleophillic substitution reactions in the presence of a electron withdrawing group which stabilizes the Meisenheimer complex.

When the nucleophile attacks the ring carbon atom carrying the eventual leaving group. A resonance-stabilized carbanion intermediate called a Meisenheimer complex is formed.

Subsequent loss of the leaving group from the intermediate complex yields the product of the reaction.

Answer:

the number of moles of ethanol is 18 g sample is 0.390 mol

Explanation:

The computation of the  number of moles of ethanol is 18 g sample is shown below:

= Mass of ethanol sample ÷ molar mass of ethanol

= 18 g ÷ 46.064=84 g

= 0.390 mol

Hence, the number of moles of ethanol is 18 g sample is 0.390 mol

Answer:

The atomic is 6, the mass number is 12

Explanation:

The element being described is Carbon.

The number of protons in the nucleus of an atom is called its atomic number, Z.

The number of protons pluss the number of neutronsin the nucleus of an atom gives the atom's mass number, A.

Answer:

a) 0.03050 = 3.050 × 10-²

b) 0.256 x 10°= 2.56 × 10-¹

c) 25.005 10 =​ 2.500510 × 10¹

Explanation:

Scientific notations is a way of making very large or very small numbers more comprehensive or simplified. It involves the use of power of ten (10^). The numbers are represented to the power of ten. The following format is used:

a x 10^b

where; a is a number or decimal number between 1 and 10 i.e less than 10 but greater than 1

b is the power of ten

To write a number in scientific notation,

- we move the decimal point right or left depending on whether we're trying to reduce or increase the number

- we count the number of times the decimal point was moved. This serves as the b in the format above.

For example,

a) 0.03050 = 3.050 × 10-²

The decimal point was moved rightward twice. This caused the ^-2 power.

b) 0.256 x 10°= 2.56 × 10-¹

The decimal point was moved rightward once. This caused the ^-1 power.

c) 25.005 10 =​ 2.500510 × 10¹

The decimal point was moved leftward once. This caused the ^1 power.

we can determine the enthalpy of reaction for the hypothetical reaction A2X4(l) + X2(g) → 2AX3(g) using the following steps:

Hess's Law of Constant Heat Summation  states that regardless of the multiple stages or steps of a reaction, the total enthalpy change for the reaction is the sum of all changes.

The law is  Hess's Law  of Constant Heat Summation  is described as a manifestation that enthalpy is a state function.

Learn more about Hess law at:

https://brainly.com/question/9530080

#SPJ1

When copper is placed in water, it reacts with the water molecules to form copper(II) ions and hydrogen gas. The reaction is exothermic, which means it releases heat energy into the surroundings. By measuring the temperature changes that occur, we can determine the amount of heat that is released by the reaction.

The temperature changes can be measured using a thermometer. We can place the copper metal in a container of water and take the initial temperature reading. Then, we can add the copper to the water and record the temperature change over time. By monitoring the temperature changes, we can observe the exothermic reaction taking place.

The heat released by the reaction between copper and water has many practical applications, including in the design of power plants and in the production of steam for heating and electricity generation. Therefore, understanding the heat released during this reaction is important for a variety of scientific and engineering fields.

In conclusion, step 7 of putting copper metal in water and measuring the temperature changes allows us to observe and measure the heat released by the exothermic reaction between copper and water, which has important applications in various scientific and engineering fields.

Know more about exothermic here:

https://brainly.com/question/2924714

#SPJ11

Answer:

Aluminum

copper

Iron

Lead

The Final Slide:

Aluminum- 0.90

Copper- 0.35

Iron- 0.44

Lead- 0.12

Explanation:

I hope this helps! :))))

Answer:

1.21 g of Tris

Explanation:

Our solution if made of a solute named Tris

Molecular weight of Tris is 121 g/mol

[Tris] = 100 mM

This is the concentration of solution:

(100 mmoles of Tris in 1 mL of solution) . 1000

Notice that mM = M . 1000  We convert from mM to M

100 mM . 1 M / 1000 mM = 0.1 M

M = molarity (moles of solute in 1 L of solution, or mmoles of solute in 1 mL of solution). Let's determine the mmoles of Tris

0.1 M = mmoles of Tris / 100 mL

mmoles of Tris = 100 mL . 0.1 M → 10 mmoles

We convert mmoles to moles → 10 mmol . 1mol / 1000mmoles = 0.010 mol

And now we determine the mass of solute, by molecular weight

0.010 mol . 121 g /mol = 1.21 g

The average speed at which the cars rolled down the track   4.28 m/s

Average Speed is defined as Total Distance Traveled ÷ Total Time Taken . SI unit of average speed is meter per second ( m/s).

Average Speed = total distance traveled ÷ total time taken

we have , jessica's car travelled 40 m in 10 sec

kristi's car travelled 40 m in 20 sec

laticia's car travelled 40m in 8 sec

Average Speed = total distance traveled ÷ total time taken

so,                          = 40+40+40 ÷ 10+20+8

                                  = 120÷28

                                = 4.28 m/s

To know more about average speed visit :

https://brainly.com/question/23270299

#SPJ9

Answer:

ok

Explanation:

The structural formula for 2,2-dimethylbutane in the above task is (CH3)3CCH2CH3.

The correct answer choice is option b.

It follows that the structural formula for the above compound in the above task has 4 carbon atoms as the parent chain and has 2 different methyl substituents on the same carbon 2.

The image to the paper work is attached for more clearity.

The compound; 2,2-dimethylbutane ( (CH3)3CCH2CH3 ) belong to an alkane family. They have a general formula CnH2n+2.

So therefore, we can now confirm from the explanation given above that the only correct answer for the structural formula of the compound above is (CH3)3CCH2CH3

Read more on structural formula:

https://brainly.com/question/16693647

#SPJ1

Answer:

D) There are 33 particles inside of the nucleus and 16 particles outside of the nucleus.​

Explanation:

Sulfur has an atomic number of 16. The atomic number represents the number of protons, so sulfur has 16 protons.

This atom of sulfur has a mass number of 33. The mass number is the sum of protons and neutrons. Then, the number of neutrons is 33 - 16 = 17

Sulfur is a neutral atom. Therefore, it has the same number of positive charges (protons) and negative charges (electrons). Thus, sulfur has 16 electrons.

Protons and neutrons are in the nucleus and electrons are outside the nucleus.

Taking all the above into account, the correct answer is:

D) There are 33 particles inside of the nucleus and 16 particles outside of the nucleus.​

Answer:

D) There are 33 particles inside of the nucleus and 16 particles outside of the nucleus.​

Explanation:

Sulfur has an atomic number of 16. The atomic number represents the number of protons, so sulfur has 16 protons.

This atom of sulfur has a mass number of 33. The mass number is the sum of protons and neutrons. Then, the number of neutrons is 33 - 16 = 17

Sulfur is a neutral atom. Therefore, it has the same number of positive charges (protons) and negative charges (electrons). Thus, sulfur has 16 electrons.

Protons and neutrons are in the nucleus and electrons are outside the nucleus.

Taking all the above into account, the correct answer is:

D) There are 33 particles inside of the nucleus and 16 particles outside of the nucleus.​

What pH scale number represents a neutral.

The answer is 7

Answer:

its sodium hydroxide

Explanation:

The Earth’s tilt changes its position relative to the stars and constellations as the Earth rotates around its axis.

Answer:

Hydrogen sulfide reacts with aqueous selenous acid to produce selenium disulfide:

H2SeO3 + 2 H2S → SeS2 + 3 H2O

Selenium disulfide consists of 8-membered rings. It has an approximate composition of SeS2, with individual rings varying in composition, such as Se4S4 and Se2S6. Selenium disulfide has been used in shampoo as an antidandruff agent, an inhibitor in polymer chemistry, a glass dye, and a reducing agent in fireworks.[15]

Selenium trioxide may be synthesized by dehydrating selenic acid, H2SeO4, which is itself produced by the oxidation of selenium dioxide with hydrogen peroxide:[17]

SeO2 + H2O2 → H2SeO4

Hot, concentrated selenic acid can react with gold to form gold(III) selenate.[18]

I feel that it is D but I am not 100% sure sadly.

With a Ksp of 4.30*10−11 and a molar mass of 274 g / mol the solubility (in g / L) of the generic salt is mathematically given as

S=0.0604g/l

Generally, the Ksp   is mathematically given as

Ksp=4s^3

Therefore

s=(\frac{4.30 × 10−11}{4})^{1/3}

s=2.207×10^{−4]

In conclusion, solubility is

S=2.207×10^{−4]*274

S=0.0604g/l

Read more about Molarity

https://brainly.com/question/9149034

The human population grew from 1 billion in the year 1800 to approximately 7.8 billion in the year 2021.

In the year 1800, the estimated global human population was around 1 billion. Over the next two centuries, significant advancements in technology, medicine, agriculture, and improved living conditions contributed to a rapid increase in population.

The growth rate of the human population began to accelerate in the 20th century. By the year 1927, the global population reached 2 billion. It took just 33 years for the population to double, reaching 4 billion in 1960. The population continued to grow at an unprecedented rate, with 6 billion people on Earth by the year 1999. As of 2021, the estimated global population stands at approximately 7.8 billion.

This remarkable growth in population can be attributed to several factors, including advancements in healthcare leading to reduced infant mortality rates, improved access to education and contraception, increased agricultural productivity, and overall socio-economic development.

It's important to note that population growth has not been uniform across all regions. Different countries and regions have experienced varying rates of population growth due to factors such as fertility rates, mortality rates, migration patterns, and government policies.

For more such questions on population visit:

https://brainly.com/question/30148263

#SPJ8

Answer:

An element is an ATOM or aggregate of atoms all of which have the same number of protons. In pure form, they will also have the same number of electrons. Each element has its own unique number of protons. For example, hydrogen always has one proton, helium always has two and lithium always has three.

Explanation:

Answer:

1 mole of ZnCl₂

Explanation:

Just from the stoichiometric equation/ balanced equation:

            Zn(s) + 2HCl(aq) → ZnCl₂(s) + H₂(g)

            1 mole   2 moles    1 mole       1 mole

Therefore: 2 moles of 2HCl produce 1 mole of ZnCl₂

The percent composition of hydrogen, phosphorous and oxygen in phosphoric acid is 3.06 %,31.60%,65.31 % respectively.

Percent composition is defined as a convenient way to record concentration of solution.It is a expression which relates solute to solvent as,mass of solute/mass of solution ×100.There are two types of percentage composition percent weight by volume and percent volume by volume .

Percent composition of hydrogen=3/97.99×100=3.06%.

Percent composition of phosphorous=30.97/97.99×100=31.60%

Percent composition of oxygen=64/97.99×100=65.31%

Learn more about percent composition,here:

https://brainly.com/question/17505281

#SPJ1