Chemistry College

2.
Which form of cell division produces four cells with chromosomes different from the
parent cell?
B
budding
dominant
meiosis
Dmitosis

Answers

Answer 1

Answer:

meiosis

Explanation:

Related Questions

How many more electrons does each oxygen atom need to be stable?

Answers

The answer for that question is 2 because oxygen has six valence electrons in its outer shell and there are eight electrons are needed to fill the second level to achieve stability so oxygen needs 2 more electrons to be stable your welcome :)

The mass of 1 mole of phosphorus atoms is how many
grams.

Answers

Answer:

approximately 30 g.

The mass of 1 mole of phosphorus atoms is approximately 30 g.

Explanation:

Hope this helps.

Can anyone help me with this?

Answers

Answer:

Label 2

Explanation:

Earth is about 2/3 of the way up the Orion Arm of the Milky Way Galaxy

Which of the following resources can be obtained from the hydrosphere?

Answers

The hydrosphere includes water that is on the surface of the planet, underground, and in the air. A planet's hydrosphere can be liquid, vapor, or ice. On Earth, liquid water exists on the surface in the form of oceans, lakes and rivers. It also exists below ground—as groundwater, in wells and aquifers.

HOPE THIS HELPS YOU!!!!!

Which factor causes Earth’s seasons?

Answers

Answer:

The sun's position near earth

Explanation:

Explain how conditions in the mantle crate a conventional current

Answers

Answer:

As the warmer material rises, it also cools, eventually pushed aside by warmer rising material and sinking back toward the core. Mantle material flows slowly, like thick asphalt or mountain glaciers. While the mantle material remains solid, the heat and pressure allow convection currents to move the mantle material

The scientific community dismissed John Needham’s attempt to prove spontaneous generation. What was the reason that they gave? *

A. By sealing off the flask he deprived the environment of air, a requirement of spontaneous generation


B. He used the wrong type of flask

C. He left the flasks open to the air for too long

D. He did not boil his broth long enough and the flasks were not cleaned prior to the experimenter.

Answers

Answer:

He did not boil his broth long enough and the flasks were not cleaned prior to the experimenter

Suppose a solution has a pOH of 5.3. What is the concentration of hydronium ion, H3O+, in the solution?

Answers

The concentration of hydronium ion, H3O+, in the solution with pOH of 5.3 is 1.99 × 10-⁹M.

HOW TO CALCULATE HYDROGEN CONCENTRATION:

The pOH of a solution is given as 5.3. The pH of this solution can be calculated as follows:

pOH + pH =14

5.3 + pH = 14

pH = 14 - 5.3 = 8.7

pH = 8.7.

The hydrogen ion concentration can be calculated by using the following expression:

[H+] = 10-pH

[H+] = 10-⁸.⁷

[H+] = 1.99 × 10-⁹M

Therefore, the concentration of hydronium ion, H3O+, in the solution with pOH of 5.3 is 1.99 × 10-⁹M.

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How many grams of NaBr must he measure out to have 4.20 moles?

Answers

Answer: 432 grams

Explanation:NaBr must he measure out to have 4.20 moles.

Darrell has 35 grams of melted chocolate. He pours all of the melted chocolate in molds. After he allows them to cool, Darrell has two solid bars of chocolate.


If the two solid chocolate bars contain all of the melted chocolate, what is their combined weight?
A.
It depends on how long it took the chocolate to cool.
B.
The chocolate bars weigh more than 35 grams.
C.
The chocolate bars weigh exactly 35 grams.
D.
The chocolate bars weigh less than 35 grams.

Answers

Answer:

A

Explanation:

it is correctly right????

Answer:

B.

The chocolate bars weigh more than 35 grams.

describe the structure of a typical metal such as iron ?
assaaap

Answers

Answer:

Metals consist of giant structures of atoms arranged in a regular pattern. The electrons from the outer shells of the metal atoms are delocalised , and are free to move through the whole structure. This sharing of delocalised electrons results in strong metallic bonding .

Explanation:

mark me as brainliest

in metalli bonding the valence electrons are delocalised and form a “sea” of mobile electrons while the positive metal atoms are held together by the electrons moving around

The tides of the oceans and large lakes that occur on Earth are caused by_______

The gravitational pull from the moon and sun

The earth’s rotation

Answers

Answer:

The gravitational pull from the moon and sun

Explanation:

Answer: gravity

Explanation:

Gravity is one major force that creates tides. In 1687, Sir Isaac Newton explained that ocean tides result from the gravitational attraction of the sun and moon on the oceans of the earth (Sumich, J.L., 1996).

A substance that flows is called a

Answers

Answer:  a fluid???

Explanation: Sorry if it is wrong but i think that is right

2 2.5.2 Test (CST): Computer-Scored Unit Test
Question 23 of 25
Which of the following best defines an acidic solution?
A. A solution with a pH greater than 7
B. A solution with a pH less than 0
C. A solution with a pH equal to 7
D. A solution with a pH less than 7
SUBMIT

Answers

Answer:

a solution with pH greater than 0

Explanation:

if 0.400 moles CO and 0.400 moles O2 completely react how many grams of CO2 are produces?
2CO+O2 becomes 2CO2​

Answers

If 0.400 moles CO and 0.400 moles O2 completely react, 17.604 grams of CO2 would be produced.

First, let us look at the balanced equation of reaction:

[tex]2CO + O_2 ---> 2CO_2[/tex]

According to the equation, the mole ratio of CO and O2 is 2:1. But in reality, the mole ratio supplied is 1:1. Thus, CO is the limiting reactant while O2 is in excess.

Also from the equation, the ratio of CO consumed to that of CO2 produced is 1:1. Thus, 0.400 moles of CO2 would also be produced from 0.400 moles of CO.

Recall that: mole = mass/molar mass

Therefore, the mass in grams of CO2 that would be produced from 0.400 moles can be calculated as:

    Mass = mole x molar mass

                 = 0.400 x 44.01

                       = 17.604 grams

More on calculating mass from number of moles can be found here: https://brainly.com/question/12513822

1. Since the electron has a negative electric charge and the nucleus has a positive
electric charge, where would you expect to find electrons in atoms?

Answers

Outside of the nucleus

Fill in the [?]
73,542 m = [?] km
Give your answer in standard form.

Answers

First of convert 73,542m- 73.542km

Then for standard form it would be:
7.3542 x 10^1

A rectangular block weighs 121g. The dimensions of the block are 9.1cm by 5.4cm by 2.3cm. From this data, what us the density of the block in g/mL? Will tge block float or sink in water and how do you know? Show all your work on a piece of paper.​

Answers

The density of the rectangular block is 1.07 g/mL.

From the question, we have the mass of the rectangular block as 121g

The dimensions of the block are given as follows;9.1cm by 5.4cm by 2.3cm

So we have the volume of the block as; 9.1cm × 5.4cm ×  2.3cm = 113 cm^3

Let us recall that; 1 cm^3 = 1 mL, so 113 cm^3 = 113 mL

Having said that, we must also remember that;

Density = Mass/volume

Density = 121g/113 mL

Density = 1.07 g/mL

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What is the answer with the proper significant figures 7.6+2.401+0.68=

Answers

Answer:

10.7

Explanation:

The addition of 7.6 + 2.401 + 0.68 = is 10.681.

According to the addition of sig figs, you want your answer to have the same amount of places, after the decimal point, as the least sig-fig figure.

7.6

2.401

0.68

+

----------

10.681 - Draw a line straight down from the least sig-fig figure (7.6)

So the maximum figure after the decimal point is one. Since 8 is greater than 5, you have to round up from 10.6 to 10.7.

what is a compound substance

Answers

Answer:

A compound is a substance that contains atoms of two or more different elements.

Explanation:

Please mark my answer no. 1

PLEASE HELP ME WITH THIS I ONLY HAVE 8 MINUTES I will give you extra points . THANK YOUU

Answers

fossils formed when dinosaurs died

Why do scientists use remotely operating vehicles (ROVs) in scientific study?provide an example of their use

Answers

Answer:

Remotely operated vehicles, or ROVs, allow us to explore the ocean without actually being in the ocean. ... Additional equipment, such as a manipulator or cutting arm, water samplers, and instruments that measure parameters like water clarity and temperature, may also be added to vehicles to allow for sample collection.

Explanation:


17 Polly has a pencil that is 21 cm long. How long is the pencil

Answers

Answer:

The pencil is 8.268 inches

Calculate the mass percent of H in C3H8O3.
%

Answers

Answer:

because of it being that you have inferno dragon plsss

The substance chlorine monoxide, ClO(g), is important in atmospheric processes that lead to the depletion of the ozone layer. The ClO molecule has an experimental dipole moment of 1.24 D and the Cl−O bond length is 1.60 Å.

Part A: Determine the magnitude of the charges on the Cl and O atoms in units of the electronic charge, e.

Part B: Based on the electronegativities of the elements, which atom would you expect to have a partial negative charge in the ClO molecule?
Atom O or Atom Cl

Part C: Using formal charges as a guide, propose the dominant Lewis structure for the molecule. (Draw a diagram)

Part D: The anion ClO− exists. What is the formal charge on the Cl for the best Lewis structure for ClO−?

Answers

A) The magnitude of the charges on CI and O atoms are : +0.16e and -0.16e  respectively

B)  Atom O will have a partial negative charge on the CIO molecule

C) Attached below

D) The formal charge on Cl is +3

A) Determine magnitude of charges on CI and O

Magnitude of charge = dipole moment / bond length --- ( 1 )

where : dipole moment = 1.24 D * [tex](\frac{3.34*10^{-30} C m}{1 D} )[/tex]

             Bond length = 1.60 A° * [tex]( \frac{10^{-10} m}{A^{0} } )[/tex]  

∴  Magnitude of charge = 2.56 * 10⁻²⁰ C

Note : Charge of an electron = 1.602 * 10⁻¹⁹ C

Therefore the magnitude of charges on CI and O atoms is

2.56 * 10⁻²⁰ C * [tex]\frac{1e}{1.602*10^{-19} }[/tex]  = 0.16 e

Therefore

charge on CI = +0.16e

charge on O = -0.16e

Hence we can conclude that A) The magnitude of the charges on CI and O atoms are : +0.16e and -0.16e  respectively and Atom O will have a partial negative charge on the CIO molecule also The formal charge on Cl is +3

Learn more about CIO : https://brainly.com/question/212138

19. When you cut an apple in half. What type of change has occurred?
A.
Ichemical
C.
temporary
B.
physica
D.
reactive

Answers

Answer:

Physical

Explanation:

Nothing has chemically happened and the change is permenant therefore it is physical

Physical, the cut was not temporary, it did not give a reaction nor did it give a chemical reaction

please answer this correctly​

Answers

Answer:

B. basic

Explanation:

Because acidic is sour in test, salt is tasty in taste, and neutral neither bitter, tasty and nor sour

HELP!! please choose all the correct answers, picture attached

Answers

Answer:

Only C. is wrong else every option is correct.

Explanation:

Hope this helps you. If you want explanation then ask in comments. Good luck!

which chemical formal shows an ionic compound? A. CO2 B.N 2 O C.NaCI D.C6 H12 O6

Answers

Answer:

B

N2O

Explanation:

maybe

d can also be lol

What term refers to a group of nerve cells that are connected to one another?
A. neuron
B. nerve network
C. brain
D. cerebrospinal fluid

Answers

B. Nerve network!

Hope this helps!
b is the answer to your question
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