Geologic Time Scale

Time Period Duration (Millions of Years Ago)

Cenozoic 66-0

Mesozoic 252-66

Paleozoic 541-252



According to the scale, what time period are we in today?

a
Cenozoic
b
Mesozoic
c
Paleozoic
d
None of these

Answers

Answer 1
It’s likely Paleozoic because we are living in 2020 and 541 is the closet we can go to that

Related Questions

10 g of copper is heated and the mass increases to 12.5 g. What is the mass of the copper in the new substances?

Answers

Answer:

10g

Explanation:

The amount of copper in the heated mass of the new substance produced is still 10g because in any chemical action, mass is always conserved.

According to the law of conservation of matter "matter is neither created nor destroyed in a chemical reaction". The change in mass is only due to oxygen gas that combines with the new copper formed or other substances that joined the mass. The substance will still have the same amount of copper as the original one. Since we started with 10g of copper, we end with 10g of copper.

what is the density of a 100g piece of titanium if a 10g piece of titanium has a density of 4.506g/cm3?

Possible answers:
A: 45.06g/cm3
B:4.506g/cm3
C: 9.1g/cm3
D: 91g/cm3

Answers

Answer:

B. Density stays the same no matter how much of a substance there is.

Explanation:

Density of the substance is the same and it is the measure of its mass per unit volume. Thus, the mass of titanium per  1 cm³  is 4.506 g which is the same for 10 g, 100 g or whatever the mass.

What is density ?

Density of a substance is the measure of its mass per unit volume. It describes how closely its particles are packed.  Density of an object depends on its bond type, temperature and pressure.

The more denser the object is , more will be its mass distribution per unit volume. Substances denser than water will sink on it otherwise they float on water.

Density is constant for a substance, the distribution of given mass per unit volume is same for all masses. Hence, the density of 100 g Ti is same as that of 10 g. i.e., 4.56 g/cm³.

To find more on density, refer here:

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which statement below best describes the movement of particles in a gas?
A- the particles vibrate in a fixed position
B-the particles slide easily past one another
C- the particles move freely and are well separated
D- the particles move freely with little free space between the particles.​

Answers

Answer:

c the particles are spaced out and move freely

Explanation:

Answer:

C). The particles move freely and are well separated

Explanation:

Question 4 of 10
What is the molarity of a solution of 3 moles (mol) of FeBr3 in 1/2 L water?
A.
3 mol/2L
B.
2L/3 mol
C.
0.5L/3 mol
D.
3 mol/0.5 L
SUBMIT

Answers

Answer:

B

Explanation:

Answer:

D. 3 mol/0.5 L

Explanation:

Just took the quiz

Benzoic acid, C6H5COOH, is another derivative of benzene. The pH of an aqueous solution of benzoic acid at 298 K is 2.95. Determine the concentration of hydroxide ions in the solution,

Answers

Answer:

[OH⁻] = 8.91x10⁻¹²M

Explanation:

In aqueous solutions, the [OH] and [H⁺] are associated in the equation of hydrolisis of water:

1x10⁻¹⁴ = [OH⁻] [H⁺]

With pH, we can solve for [H⁺] and obtain, the [OH⁻] using this equation:

pH = -log [H⁺]

[H⁺]= 10^-pH

[H⁺] = 1.122x10⁻³M

1x10⁻¹⁴ = [OH⁻] [1.122x10⁻³M]

[OH⁻] = 8.91x10⁻¹²M

In an experiment conducted between oxygen and chlorine gas it was found that oxygen gas spread much faster than chlorine. What is the explanation for this observation?

Answers

Answer:

Because oxygen is lighter

Explanation:

I WILLL GIVE YOU BRAINLYESTTT PLEASE HELPPPP

Answers

Answer:

10.99s

Explanation:

Given parameters:

Speed of the fly = 9.1m/s

Distance flown = 100m

Unknown:

Time taken to fly this distance = ?

Solution:

Speed is distance divided by the time;

  Mathematically;

            Speed  = [tex]\frac{distance}{time}[/tex]  

             Time  = [tex]\frac{distance}{speed }[/tex]  

Insert the parameters and solve;

        Time  = [tex]\frac{100}{9.1}[/tex]   = 10.99s

When the following equation is balanced, what is the coefficiant for Br?

___I2 +___NaBr rightwards arrow___NaI +_?_Br2

A.
6

B.
3

C.
1

D.
2

1 points

QUESTION 10

The previous question is an example of what type of chemical reaction?

A.
Synthesis

B.
Decomposition

C.
Single Re-Placement

D.
Double Re-Placement

Answers

Answer:

1. A 2. C

Explanation:

because it just is

Which state of matter do mercury, orange juice and lava represent?

Answers

Answer:

they represent liquid state of matter.

Answer:

they state liquid state of matter .

hope it is helpful to you

PLEASE HELP ME !!!!!!!

Answers

Answer:

it would be 5,045

Explanation:

because it is closer to 5,000. pls correct me if wrong

please help me..........​

Answers

Answer:

4/6

6/9

8/12

Explanation:

What is Jadi? is it goat? what language is Jadi?



2. What properties do all acids have?

3. Why should you never use taste as a method for testing an unknown substance?

4. What is used to detect the presence of acids?

10. What can you use to detect the presence of a base?

11. What are some common bases that we use every day?

12. How does an antacid help reduce heartburn?

13. What happens when acid and base are mixed

14. What is used to determine the pH of a substance?

15. Describe how the pH scale works. In other words, what is it actually measuring?

17. Why is pH important to our environment?

18. Describe how salt is formed.

Pls help!!!!!

Answers

2. They taste sour, are electrolytes, and react with active metals to produce hydrogen.

3. You should NEVER taste unknown chemicals because many are poisonous and can destroy body tissue.

4. Most often dyes are used to detect acids. The dyes will turn a certain color which indicates the presence of an acid.

10. You can use litmus to detect wether a solution is a base or an acid.

11. The most common bases I can think of would be: baking soda, laundry detergent, or soaps.

12. Antacids work by neutralizing the acids in your stomach.

13. When an acid and base are mixed together, they produce a salt.

14. Normally pH meters are used, but you can also calculate the pH using math. (yuck)

15. The pH scale measures how acidic or basic a substance is. It ranges from 0-14, with 7 being neutral.

17. pH is very important to the environment as it helps us measure and monitor for safe water conditions. A rise or fall from the average water pH level can indicate chemical pollution.

18. Salt is formed when an acid and base react with each other. It then has a cation of the base, and anion of the acid.

I hope those helps!! (:

According to the periodic table, the neutral atom of what element has 4
protons, 5 neutrons, and 4 electrons?

Answers

Answer:

Beryllium

Explanation:

Given parameters:

Number of protons = 4

Number of neutrons  = 5

Number of electrons  = 4

Unknown:

Element = ?

Solution:

To determine an element, the atomic number is the most important identifier.

The atomic number is the number of protons in an atom.

Since the atom here has a proton number of 4, checking on the periodic table, it is Beryllium, Be

How many orbitals surround the nucleus in a neutral atom of sulfur (S)?
1
3
5
6

Answers

it would be 3 have a good day

how is a solute and a solvent different

Answers

Solute is substance which is dissolve in a solvent and Solvent is a substance that dissolves solute in a solution.
Answer: Solute is the substance being dissolved, and solvent is the substance that the solute is dissolving in. For example, 1 g of sugar in 100 mL of water. Sugar is being solved so it is the solute, and water is what the sugar is dissolving in so it is the solvent.

What causes rain to precipitate from clouds?

Answers

Answer: Precipitation forms in the clouds when water vapor condenses into bigger and bigger droplets of water. When the drops are heavy enough, they fall to the Earth.

Explanation: Have a blessed day!

Answer: Precipitation forms in the clouds when water vapor condenses into bigger and bigger droplets of water. When the drops are heavy enough, they fall to the Earth.

Explanation:hope this helps u

why burning of wood and cutting it into small pieces are considered as two different types
of changes.in sort type
.
اور بس انتي شلال​

Answers

Answer:

burning causes pollution cutting results furniture

Explanation:

are u a nepali ?

Answer:

burning of wood, new substances are formed and hence it is a chemical change. While cutting the wood into small pieces no new substance is formed, thus it is a physical change. Hence, burning of wood and cutting it into small pieces are considered as two different types of changes.

I WILL GIVE BRANLIEST What factor is the temperature in an ecosystem? Abiotic or Biotic?

Answers

Abiotic I think

“ temperature is an abiotic factor with an ecosystem abiotic factors are the parts of an ecosystem that are nonliving such as weather and temperature”

Answer:abiotic .

Explanation:

Question 14
1 pts
How many moles of NaCl could be found in 0.4 L of a 0.9 M solution? Round your answer to
two decimal places.

Answers

Answer:

0.36mol

Explanation:

Given parameters:

Volume of NaCl  = 0.4L

Molarity  = 0.9M

Unknown:

Number of moles  = ?

Solution:

To find the number of moles, the molarity of a solution is the amount of solute contained in a solution.

 Molarity  = [tex]\frac{number of moles}{volume}[/tex]  

 Number of moles = molarity x volume

 Insert the parameters and solve;

 Number of moles = 0.4 x 0.9  = 0.36mol

When you climb to the top of a water slide, you are gaining:
O A. gravitational kinetic energy.
B. chemical potential energy.
c. gravitational potential energy.
D. chemical kinetic energy.

Answers

Answer:

C

Explanation:

You climbing the water slide gives you potential energy and your building gravitational eneergy.

When we climb the top of a water slide we are gaining gravitational kinetic energy. That is we are moving through the surface and thus we experience both kinetic energy and gravitational energy.

What is  kinetic energy?

Kinetic energy of a body is generated by virtue of its motion. Gravitational energy is a form of energy by which the an object attracts other object to its center of mass. Both forms of energy are  directly proportional to the mass of the object.

Potential energy is generated by virtue of  the position and height of the object. As the height from surface increases, potential energy increases. Potential energy and kinetic energy together called as mechanical energy of an object.

When starts moving our potential energy is converting to kinetic energy. Hence, when we climb the top of a water slide kinetic energy starts to increase. Thus, option A is correct.

To find more on kinetic energy, refer here:

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1.Which statement(s) is/are true about a divergent plate boundary? Check all that apply.

A.new crust is created here

B.an ocean trench is found here

C.a rift valley is associated with this boundary

D.subduction occurs at this boundary

E.a mid-ocean ridge is found at this boundary

F.San Andreas is an example of this type of boundary

G.sea floor spreading occurs here
--------------------------------------------------------------------------------------------------------------------------------

2.Which statement(s) is/are true about a transform plate boundary? Check all that apply.

A.an ocean trench is found here

B.earthquakes frequent this boundary

C.subduction occurs at this boundary

D.two plates are sliding past each other

E.San Andreas is an example of this type of boundary

F.an ocean trench is found here
--------------------------------------------------------------------------------------------------------------------------------
3.Which statement(s) is/are true about a convergent plate boundary? Check all that apply.

an ocean trench is found here

a rift valley is associated with this boundary

subduction occurs at this boundary

volcanic island chain might occur here

folded mountains might form here

earthquakes might occur here

San Andreas is an example of this type of boundary
--------------------------------------------------------------------------------------------------------------------------------
SINCE THIS IS ALOT OF THINKING I AM GIVING A GOOD AMOUT OF POINTS.....
PLEASE DONT SCAM AND STEAL THE POINTS

Answers

Answer:

I know the first one is c or e but i not sure what the others are, the second one is- wait are you sure your in 6th grade lol? I dont remember learning this

Answer:

OMG ITS MEHH

Explanation:

Can the process of rusting be called combustion? ​

Answers

Answer:

no the answer is oxidation

The process of rusting cannot be called combustion due to the following reasons : ... No energy is obtained in a rusting process. Combustion is a chemical process in which a combustible substance reacts with oxygen to produce heat and light whereas in rusting, a metal reacts with oxygen to produce metallic oxide.

PLEASE HELP!!!!!!!!
Step 4: Create Lewis dot diagrams.
a) Draw Lewis dot diagrams of the reactants and products on the paper with your chemical equation.
b) Select a different color to use for each element in the chemical reaction. Use your chosen color
for the element’s symbol and for its valence electrons.
c) Label these diagrams “Lewis Dot Diagrams.”

Answers

Answer:

Hey student your question is not proper arrange, i don't understand what you want us to do

SOMEONE HELP ME PLEASE ILL GIVE BRAINLY!

Is the following picture an example of a chemical change or a physical change?

A chemical change, because the atoms are rearranging to form new molecules.

A physical change, because the molecules are staying the same.

A chemical change, because the molecules are staying the same.

A physical change, because the atoms are rearranging to form new molecules.

Answers

Answer:

It would be a physical change, because the atoms are rerranging to form new molecules!

Explanation:

In your own words, please explain how to name acids.

Answers

Answer:

Acids are named based on their anion — the ion attached to the hydrogen. In simple binary acids, one ion is attached to hydrogen. Names for such acids consist of the prefix “hydro-“, the first syllable of the anion, and the suffix “-ic”. Complex acid compounds have oxygen in them.

A wave is a _____that transfers _____ through a ______
A.) medium, disturbance, energy
B.) disturbance, energy, medium
C.) energy, disturbance, medium
D.)disturbance, medium, energy

Answers

The correct answer is B.) disturbance,energy,medium

A wave is a  disturbance that transfers energy through a medium. There

are types of  such as sound and light waves.

A wave involves the transfer of energy such as sound, light waves etc

through a medium. The medium could be through liquids , solids or air and

they have characteristic waves which pass through them.

When a wave transfers energy through a medium, the matter involved

doesn't experience any type of movement.

Read more on https://brainly.com/question/19210453

how can you test a sample of soil for acidity or alkalinity​

Answers

Answer:

Scoop a soil sample into a fresh container, add 1/2 cup of water, and mix. Then, add 1/2 cup of baking soda. If the soil bubbles or fizzes, the soil is acidic. The reaction you're seeing is the result of acidic soil coming into contact with an alkaline substance (baking soda).

Explanation:

Hope this helped!

Potato strips placed in a container of concentrated salt water will ultimately __.

Answers

Answer:

00000

Explanation:

how do i do the chemicals

Answers

you have to put them togeter

List and define the 3 parts of a chemical equation (R->P).

Answers

Answer:

R- reactants

arrow- yields

p- products

Explanation:

Other Questions
1. Anne wants to join five pieces of paper together. She plans to use 3 rectangular pieces of the same size and 2 square pieces of the same size. The length of each rectangular piece is 3 1/2 feet. The width of each rectangular piece, w, is the same as the length of each square piece. The expression below can be used to find the total surface area of the five pieces of paper. Anne decides that the width, w, of the rectangular pieces should be 2 feet. What is the total surface area, in square feet, of all five pieces of paper? A lot of your personality comes from ______________________ rather than your DNA. Match the graph shown with the following equationAnswer a and b please The __________ is located under the forebrain and midbrain.A.forebrainB.midbrainC.hindbrainD.brainstemPlease select the best answer from the choices providedABCDThe answer is C on edge 2020 PLS HELPPPPPPPPP!!!!!!!!!!!3. There are many bacteria that live inside of us. By some estimates there are 3.8 x 1013 bacteria that live inside each of our bodies. Each bacterium weighs, on average, 5.1 x 10-12 grams. What is the total gramweight of bacteria in a human body? Round to the nearest gram. List any three quantum numbers that describe an electron in an atom and state the relationship between any of the two if f(x)=x2+3x+5 what is f(3+h) Question is below here 14. All the animals in Jurassic Park were_____ to control the populations. you and your friend play a video game where is Superbird has to find and eat radiation leaks at nuclear power plant before they explode. Which of the following is the main idea of this video game radiation leaks are dangerous a super bird Saves the World birds with superpowers nuclear power plants write your reflection that shows your participation in implementing an environmental project such as building and maintaining home garden or conducting a war on waste campaign Please help!!!!!!!!!! In 2022, Spencer Realty considered conducting a survey of every home to determine which homes may be put on the market within the next year. This information would be included in their financial statements as a predictor of potential future revenue. The cost of the survey would be $2.6 million, and the results would not differentiate potential business for Spencer Realty compared to other realtor companies. If Spencer Realty decided to not conduct the survey, that decision is likely based on which concep?A. Historical cost.B. Cost constraint.C. Fair value.D. Full discloser. -4 (-3 + 5 + (-2)) show all steps 6. When Landon saves $15 more, he will have enough money to buy a basic MP3 player. The player he wants to buy costs $199, which is 4 times the cost of the basic player. Which equation could be used to determine n, the number of dollars Landon has already saved? A. 4n +15 = 199 B. 4(n+15) = 199 C. n + 4(15) = 199 How many moles are there in a 122 gram sample of nickel (Ni)?7.16 x 103 moles6.22 mol2.08 mol0.481 mol Which behaviors are stimulated without using the forebrain?deep thinkingreflexesgangliaintegration Write a sed command that will display all lines of the birthday file that do not contain the string March. What was the sed command? According to the video, what do Financial Analysts analyze? Check all that apply.financial recordstravel distancesinsurance claimsa company's competitorsfraud French, Plz help. DON'T ANSWER IF YOU DON'T KNOW!!!!!!Answer the following questions in the first person using dtester, aimer, or adorer. Your answers may begin with either oui or non.1. Est-ce que tu aimes regarder la tl?2. Est-ce que tu aimes jouer aux jeux vidos?3. Est-ce que tu aimes parler franais?4. Est-ce que tu aimes danser? 5. Est-ce que tu aimes manger du chocolat?