How many Oxygen atoms are present in this chemical equation: Na2O3?

Answers

Answer 1

Answer:

3

Explanation:

You can see how many atoms there are next to the element (O3)

Answer 2
its number 3 ik someone already said it but it’s 3

Related Questions

Joel claims that “Bright White Toothpaste” removes tooth enamel stains better than all other brands. Which of the following should be documented as evidence to support his claim?
1. The amount of toothpaste used
2. The shade of teeth before and after brushing
3. The type of toothbrush used to brush teeth
4. The size of tooth

Answers

2. The shade of teeth before and after brushing

The independent variable in this instance is the bright white toothpaste, and if they’re claiming that it removes stains better than all, then that means that the dependent variable would be the shade of teeth!

The amount of toothpaste, the type of tooth brush, and the size of tooth are all variables of the experiment but will not determine if the claim is supported or not.

Hope this helps:)!

Hello everyone, can someone help me out? I am being a dummy again

Answers

Answer:

D

Explanation: We can not see every star with our necked eye. But we come close with the Hubble space telescope. So D is correct.

Your answer is D hope this helps!

pls help due soon: The graph below displays barometric pressure data collected over a 7-day period. When did a low pressure system move through the area?

Answers

between day 4 and 5 I think! because if you look at the graph between 4 and 5 is when it is a its lowest point

Answer:

I think its A

Explanation:

I think that because its when the graph gets the lowest

Pls help due soon: Why is a low-pressure system generally associated with cloudy and rainy weather?

Answers

B or D I’m not 100% sure tho
basically when the pressure is low the air can rise up into the atmosphere where it gets cold and condenses and makes a cloud then the water vapor in the cloud will condense and fall as rain. So i’m pretty sure it’s B

What is a triglyceride? (Site 2)

Answers

Answer:

in explanation

Explanation:

an ester formed from glycerol and three fatty acid groups. Triglycerides are the main constituents of natural fats and oils, and high concentrations in the blood indicate an elevated risk of stroke.

Answer:

It is a type of fat found in your blood ;)

Explanation:

What process completed division in a animal cell?

Answers

Answer: cytokinesis

Explanation:

In animal cells, cytokinesis is achieved when a contractile ring of the cell microtubules form a cleavage furrow that divides the cell membrane into half.

Can someone help me please i only have a few min-

Answers

I think it’s electrical energy

Answer:

I think it c.

Explanation:

I am not for sure

ILL MA K BRANLIEST!!​

Answers

Answer:

Fungi

Explanation:

I just worked on this

Answer:

Fungi

Explanation:

Which choice has eukaryotic animal cells?


oak


Lactobacillus


virus


liver

Answers

the answer should be liver, i may be wrong. but i’m pretty sure it’s liver
im pretty sure its liver

ILL MARK BRANLIEST!! Green Algae, ferns, and pine trees are classified in the kingdom Plantae. These organisms share certain characteristics. Which of the following is a characteristic used to classify these organisms as plants. A. They produce flowers for pollination. B. They contain seeds for reproduction. C. They have an immune system. D. They engage in photosynthesis.​

Answers

Answer:

It’s D

Explanation:

They engage Photosynthesis

ILL MARK BRANLIEST!!!​

Answers

B mushroom only because its a fungi the other organisms are not

What is the complementary DNA sequence for the DNA strand above?

Answers

Answer:

The answer is D.

Explanation:

The Answer should be D :)

You decide to make strawberry banana popsicles. What change in state will need to occur

Answers

Answer:

solid to liquid to ice i think

Explanation:

Which of the following is not true about sound waves.
A. Sound waves travel through medium.
B. Sound waves are invisible.
C. Sound waves can move through water.
D. Sound waves can move through a vacuum.

Answers

Answer:

D. Sound waves can move through a vacuum.

Explanation:

Sound waves can move through a vacuum is an incorrect statement.  

• Sound is a kind of energy produced by vibrations. These vibrations generate sound waves that move via the mediums like water, air, and wood.  

• The sound waves are not visible as it is a form of energy, sound waves generate movement in the object, which continues till the particles run out of energy.  

• A sound wave mediates its energy through particle interaction, and a sound wave cannot travel via a vacuum, this shows that sound is a mechanical wave.  

Thus, sound waves cannot move through a vacuum. Option A is not true.

To know more about:

https://brainly.com/question/8789492

Look at the PDFs and then answer the question -3-

I"M GIVING BRANINLLEST TO THE BEST ANSWER UwU

Answers

Answer:

The cell will shrink and the water will go out of the cell

the cell will get smaller

A chimpanzee and a pine tree have very little in common. However, because they are both living things, we can be certain that they both -use the sunlight to make their own food.travel with other members of their species.are made up of one or more cells.have a skeleton which allows them to move.

Answers

Answer: C. Are made up of one or more cells

Explanation: Good luck! :D

A chimpanzee and a pine tree have very little in common because they are both living things, and made up of one or more cells that is the first and third option, as they are both living forms of nature, and while the chimp is movable, the pine tree is not.

What is the significance of the animals and plants?

The significance of animals and plants is that both have unique characteristics and equal importance in nature, such as the plants' ability to produce food through the process of photosynthesis and the animals' ability to keep the system clean, such as when some animals help in plant fertilization, maintain the carbon and oxygen cycles, and so on.

Hence, a chimpanzee and a pine tree have very little in common because they are both living things, and made up of one or more cells that is the first and third option, as they are both living forms of nature, and while the chimp is movable, the pine tree is not.

Learn more about the animals and plants here.

https://brainly.com/question/29896749

#SPJ2

Giving BRANLIEST!!!​

Answers

Answer: c

Explanation:

They are different organisms.

Answer:

c

Explanation:

i think

why are butterflies important? What are they doing to help nature?

Answers

Answer: they pollinate and help flowers grow.

They are the source of food when they are adult sized and they eat aphids when they are still caterpillar’s. Search it up!! Have a nice day(:

What is the fluid found in the extracellular matrix that holds cells together as tissue and allows them to communicate with one another?

Answers

The fluid inside of the Extracellular Matrix is Extracellular Fluid. Extracellular Fluid is also called ECF. ECF is mostly tissue fluid. It is also made up of a large amount of intravascular fluid. The remaining smaller amount of ECF is transcellular fluid.

hope i could help :)

Extracellular fluid

(I’m pretty sure hope this helps)

Galileo Galilei discovered that Earth moved around the sun, which was the opposite of what most people believed at the time. What was the response of society's leaders to Galileo's discovery? He was celebrated by society and became a wealthy man. His discovery was ignored by society's leaders. His books were banned and he lived under house arrest. He was asked to change his theory and publish it again.

Answers

Answer:

His books were banned and he lived under house arrest.

Explanation:

Answer:

His discovery was ignored by society's leaders. His books were banned and he lived under house arrest. He was asked to change his theory and publish it again. Brainliest please.

Explanation:

What is the effect is a beam of light hits a green leaf?

Answers

You look straight at a bright, shiny object when a beam of light bounces off of it. What is the effect? All of the color beams except green are absorbed by the leaf.

Credits to johnharleyjackson

When light strikes a green leaf, most of the green spectrum is reflected and most of the other colors are absorbed.

what is light?

We can see light as a sort of energy. The sun provides some illumination. The other light is artificial. Man-made light is created by converting another type of energy, such as electricity, into light energy. From a source, light travels in a wavy beam to whatever it encounters. Each hue is represented by a tiny wavy beam on the beam. A light beam travelling through the air that contains all of the hues appears to be clear.

What is reflection?

When a light beam strikes an object, such as tree leaves or an apple, the color of the object influences the smaller color beams inside the light beam. All color rays except green are absorbed by the green leaves. Only the green beam is reflected back, thus the leaves appear green to our eyes. Except for red, the apple absorbs all color beams. Only the red beam is reflected back, thus the apple appears red to human eyes. This is referred to as reflection.

To know more about light here

https://brainly.com/question/1384411

#SPJ2

When did people begin to notice that coastlines of continents fit together like puzzle pieces?
when satellites began taking pictures of Earth from space
when Alfred Wegener proposed the idea of continental drift
when early explorers traveled from Europe and Asia to the Americas
when geologists first started examining the fossil record of South America

Answers

Answer:

The 1500s

Explanation:

the1500s

As early as the1500s map makers were beginning to notice that the individual continents fit together like pieces of a jigsaw puzzle. It wasn't until 1912 that Alfred Wegener first proposed an acceptable hypothesis (continental drift) as an explanation

it would be in the 1500s!! hope this helps if correct please mark brainiest

Using the image in the previous question, calculate the amount of force that the truck applied to the car if the truck was accelerating at a rate of 5 m/s2

1. What formula would you use?

2. Calculate the force of the truck hitting the car, use the correct unit for force:

3. Which law of motion supports your answer?

Answers

what does the image from the previous question look like?

Answer:1st law

Explanation:bc

A planet that has a solid, rocky surface. Terrestrial planets tend to be smaller than gas giants.

Answers

Answer: That is true

Explanation:

Answer:

True

Explanation:

Terrestrial planets tend to be smaller than gas giants.

If this was helpful please mark brainliest. Have a beautiful day.

How many Oxygen atoms are present in this chemical equation: 2CO2

Answers

Answer:

There are Four Oxygen atoms

Explanation:

Four oxygen Atoms are present

i have posted this 3 times can some one plz help?

Answers

I have no idea what that is...

Active transport is when molecules move against the concentration gradient
True or False

Answers

Answer:

this is true (:

Explanation:

Answer:

true

Explanation:

The transport of specific particles down their concentration gradient through a membrane by carrier proteins is known as facilitated diffusion. ... Facilitated diffusion moves molecules and ions against their concentration gradient, while active transport moves molecules and ions down their concentration gradient.

1.) The scientific name always consists of two words:

Group of answer choices

Genus and species

Family and species

Species and kindom

Domain and species

2.) Puma concolor is the scientific name for an American Mountain Lion, what is the species?



Group of answer choices

Puma

concolor

mountain lion

American mountain Lion

Answers

Genus and species
2.Puma

Describe how an electromagnetic wave carries energy from place to place. Your description should include the terms electric field, magnetic field, and perpendicular.

Answers

Answer:

In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels.

brainliest pls

Answer:

In electromagnetic waves, energy is carried through vibrations of electric fields and magnetic fields. The fields The vibration of electric fields is perpendicular to the vibration of magnetic fields and the vibration of electric and magnetic fields is perpendicular to the direction in which light travels.

Explanation:

How does the chain go

Answers

Answer:

1. Mosquito larvae is eaten by minnows

2. Minnows eat some algae and mosquito larvae

3. Trout eat algae and minnows

4. Herons eat the trout

So, these are the animals in order.

1. Mosquito larvae

2. Minnows

3. Algae

4. Trout

5. Heron

Hope this helps you!

1.algae
2.mosquito larvae
3.minnows
4.trout
5.herons
Other Questions
NEED HELP!!!Which description is represented by a discrete graph?A) Kiley bought a platter for $19 and several matching bowls that were $8 each. What is the total cost before tax?B) The temperature at 9 a.m. was 83 F and is heating up at an average rate of 6F per hour. What is the temperature x hours later?C) Juan ate an egg with 78 calories and some cereal with 110 calories per serving for breakfast. What is the total amount of calories he consumed?D) A bottle contained 2,000 mL of liquid and is being poured out at an average rate of 300 mL per second. How much liquid is left in the bottle after x seconds? Identify the structures. Please ASAP 90 times 10 the power of 4 An exotic-animal rancher needs to purchase feed for his unicorns. Unfortunately, commercial unicorn feed is not available. The unicornsrequireat least12 milligrams of zinc, 36 grams of protein, and 24 ounces of carbohydrates per day. A small bagof pegasus feed contains 2 milligrams of zinc, 2 grams of protein, and 2 ounces of carbohydrates, and it costs $25. A small bagof hippogriff feed contains 1milligram of zinc, 9 grams of protein, and 3 ounces of carbohydrates, and it costs $20. How many bags of each should the farmer purchase in order to supply the unicorns with the required nutrients for the lowest cost, and what is the minimum cost?Constraints:Objective Formula: Explain why the gamma rays do not bend. Solve for f.8 = 2f + 2 Today bioterrorism and pandemics are major threats in health care. What is one reason scientists are trying to culture meat in laboratories instead of simply hunting or raising animals? Help plz asap I really need help with this please halpe me pleaseee. Shelton mixed one 1/4 cups of purple cabbage into 3/8 cups of lettuce to make a big salad each day he eats 3/4 of a cup of salad which expression shows how many servings salad Shelton has? Write a sonnet using the traditional Shakespearean sonnet form. (i HAVE TRIED TO WRITE MY OWN BUT I CANNONT, PLS HELP) Match each retirement plan to its description.Offered by a company to employees. ______?Opened and managed by an individual._______?Offered by a nonprofit organization to employees.______?401(k) IRA 403(b) What did rabelais do What were the angry men in north Texas probably angry about? Castellers de tarragona- Please help with the fill in word part! Science investigation skills (I need to have 5 answers )Answer 1.Predict Answer 2.Use variableAnswer 3.Plan and conduct investigationsAnswer 4.Draw conclusions Answer 5.HypothesizeAnswer 6.MeasureAnswer 7.Classify and orderAnswer 8. Record and display dataAnswer 9.Use time and space relationships Answer 10. Use numbers PLEASE HELP ME AND WHILE YOUR HERE DOES ANYONE KNOW WHERE I CAN FIND HRW ANSWERS why is system thinking important x/3 - 3 = x/9 + 3 What value of x makes this equation true? A. 3 B. -1 C. -9 D. 27