Which of the following is an example of a scientific model?

The total inches of rainfall during a thunderstorm
A telescope used to study the stars
A computer program that simulates atmospheric conditions
A song about the Grand Canyon

Answers

Answer 1
A computer program that simulates atmosphere conditions :)

Related Questions

How are oxidation-reduction reactions related to how you use energy?​

Answers

Answer:

In oxidation reduction reactions, one species gets reduced by taking on electron(s) and another species gets oxidized by losing electrons. The movement of electrons can be used to do work. ... The electron flow can be run through a wire and these electrons can be used to do work (like run a battery). Hope this helps.

Complete the passage about ionic structures using words from the list

Answers

Answer:

see below

Explanation:

1- lattice

2- regular

3- positive

4- negative

5- alternate

6- strong

7- bonds

8- giant

NEED HELP ASAP WILL GIVE BRAINLIEST

Answers

Answer:

0.2491

Explanation:

1mole of a gas contains 6.02 × 10²³molecules

x moles will contain 3.408 × 10²¹

x = 1 × 3.408 × 10²¹/ 6.02 × 10²³

= 5.66 × 10^-3moles

Mole = mass/ molar mass

mass = Mole × molar mass

= 5.66 × 10^-3 × 44.01

= 249.0966 × 10^-3

= 0.2490966

to 4 decimal places = 0.2491

Why are naphthalene ball used to protect clothes from insects? How does it gradually decrease and ultimately disappear?​

Answers

Naphthalene balls are used to protect clothes from insects because, when they deteriorate, they create a gas that kills some insects. The naphthalene ball gradually decreases because naphthalene goes through sublimation at room temperature.

Revise the following statement to make it true:
All living things inside of an area are part of the population.

Answers

Answer:

All the individuals of a species living within a specific area are collectively called a population.

Explanation:

30 points!!!!

2K + 2H2O → 2KOH + H2

This reaction shows which detail about potassium and hydrogen?
Hydrogen is more reactive than potassium.
Potassium and hydrogen form ionic bonds.
Potassium is more reactive than hydrogen.
Potassium and hydrogen form covalent bonds

Answers

Answer:

2K + 2H2O → 2KOH + H2

So Hydrogen is more reactive than pottasium .

According to law of conservation of matter, 2 moles of potassium react with water to produce 1 mole of hydrogen gas.

So, 2 moles of potassium produce 1 mole of hydrogen gas.

Answer:

A

Explanation:

Hydrogen is more reactive than potassium.

NEED ASAP THANK YOU!

Answers

Answer:

d. 10

Explanation:

The 24 means the atomic mass and twelve means the number of electrons. You subtract the number of electrons from the atomic mass. 24-12=12

Then, since there's +2, you subtract 2 from 12 which equals 10 which means there are 10 electrons now.

The confusing thing is that + means subtract and - means add here.

Hope this helps.

50 PTS!!!!! Please answer without links!
What type of chemical reaction happens with Aerobic Cellular Respiration?
Synthesis, decomposition, single displacement, double displacement, or combustion.

Answers

Decomposition is the answer to your question.

Which type of molecule is propanol?
A. Alcohol
B. Aldehyde
C. Ketone
D. Amine ​

Answers

Answer:

A

Explanation:

Alcohol is a type of molecule in propanol. Hence, option A is correct.

What is propanol?

Propanol molecular formula is C₃H₇OH.

C₃H₇OH contains -OH functional group which belongs to alcohol.

Hence, option A is correct.

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Question 1

Of the following which displays a positive energetic process?

Answers

We can describe a positive energetic process as any process which increases the internal energy of the system.

A positive energetic reaction or process is often referred to as being Endothermic. This means that the system which is performing the process absorbs energy. Some examples include:

Boiling an EggRoasting food over a fire (the food is the reference system)

etc

Therefore, we can confirm that a positive energetic process is one in which the system in question absorbs energy, thus increasing its internal energy.

Since I could not locate the options online, I have provided a general explanation of the concept coupled with a few examples.

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what is the name of CrO2?

Answers

The name is chromium oxide!

please help me...
1. oak
2. catrpiller
3. Blue jay

Answers

Answer:

[tex]\left[\begin{array}{cc}Oak\ Leaves&Decrease\\Caterpillar&Decrease\\Blue\ Jay&Decrease\end{array}\right][/tex]

Because the fungus is killing the oak leaves, the caterpillars will have less food and die out, resulting in a decrease in blue jay populations.

Hope it helps :) and let me know if you want me to elaborate.

Which of the following best describes the arrangement of particles in a gas?
O The particles are spread apart and can move freely.
O The particles are packed closely together and can move freely.
O The particles are packed closely together and cannot move freely
O The particles are spread apart and cannot move freely.

Answers

Answer: The particles are spread apart and can move freely.

What is the mass percent of nitrogen in:

1. N2O
2. NO
3. NO2
4. N2O2

Answers

We’re going to use the mass percent formula shown below:



For the percent by mass N, we’re going to rewrite the equation as:

98% (271 ratings)
View Complete Written Solution
Problem Details
Calculate the mass percent composition of nitrogen in each nitrogen-containing compound:

c. NO2

when would a scientist choose to conduct a controlled experiment​

Answers

Answer:a scientist would choose to conduct a controlled experiment when it has all the necessary precautions and has the equipment to do so

Explanation:thank you

Plz mark for brainlist

Complete the balanced dissociation equation Cs2CO3

Answers

The balanced dissociation equation for Cs₂CO₃ is:

Cs₂CO₃(aq) —> Cs⁺(aq) + CO₃²¯(aq)

A dissociation equation is an equation showing the available ions present in a solution.

To obtain the dissociation equation, the compound must be dissolved in water to produce an aqueous solution.

The dissociation equation for Cs₂CO₃ can be written as follow

Cs₂CO₃(aq) —> Cs⁺(aq) + CO₃²¯(aq)

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What is the interaction between geosphere and biosphere

Answers

Answer:

The Geosphere interacts with the Biosphere in various ways. For example; Geosphere creates, destroys and keeps various biosphere habitats safe. The Geosphere interacts with the Cryosphere in various ways. For example; Cryosphere receives snow from hydrosphere, glacier of Cryosphere gouges geosphere.

Explanation:

The Geosphere interacts with the Biosphere in various ways. For example; Geosphere creates, destroys and keeps various biosphere habitats safe. The Geosphere interacts with the Cryosphere in various ways. For example; Cryosphere receives snow from hydrosphere, glacier of Cryosphere gouges geosphere.

"Aqueous barium chloride reacts with aqueous sodium sulfate
to produce solid barium sulfate and aqueous sodium chloride."
Which chemical equation correctly translates the description
above?

Answers

Answer:

u should go to gathmath

Explanation:

it's alot better

An hibernating bear accumulates 25 kg of a triglyceride (846 g/mol) comprising the following fatty acids: C16, C17 and C18∆9. How many grams of β-hydroxybutyrate (104 g/mol) can the bear produce from this triglyceride during its hibernation?

Answers

The quantity of β-hydroxybutyrate the bear can produce

during hibernation is 3,073.30grams.

Hibernation is defined as the period of less activity by animals to conserve energy to survive coarse weather conditions.

A typical example of an animal that hibernates is the bear.

From the question, a bear is able to accumulate 25kg (25000grams) of triglyceride.

To calculate quantity of β-hydroxybutyrate that would be produced from 25kg triglyceride;

846g of triglyceride = 104grams of β-hydroxybutyrate

25000g of triglyceride = x grams

(Cross multiple to solve for x grams)

X = 104 × 25000/846

[tex]x = \frac{104 \times 25000}{846} [/tex]

[tex]x = \frac{2600000}{846} [/tex]

[tex]x = 3073.30grams[/tex]

Therefore, the quantity of β-hydroxybutyrate the bear can produce during hibernation is 3,073.30grams.

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about distillation methods​

Answers

Answer:

Distillation, or classical distillation, is the process of separating the components or substances from a liquid mixture by using selective boiling and condensation. Dry distillation is the heating of solid materials to produce gaseous products

Answer:

Explanation:

Distillation, or classical distillation, is the process of separating the components or substances from a liquid mixture by using selective boiling and condensation. Dry distillation is the heating of solid materials to produce gaseous products.

The Planet Venus is surrounded by a thick layer of gases. In fact the atmospheric preassure on Venus is over 90 times grater than the atmospheric preassure on Earth. Wcich statements are true about boiling water on Venus? Choose the TWO STATEMENTS that aply.
A. Water will boil at a higher temperature on Venus than on Earth.
B. Water will boil at a lower temperature on Venus than on Earth.
C. The temperature of the water will remain constant as it boils.
D. The temperature will increase as it boils.

Answers

B. water will boil at a lower temperature on Venus than on Earth.
Explanation:
Because temperature and pressure are directly proportional... increase in pressure will increase in the atmospheric temperature.... Venus has higher pressure than earth that also means it has higher atmospheric temperature and as the temperature is already high the water will require lesser heat to boil

Of the following, ________ is the most volatile. Select one: C2F6 C2H6 C2I6 C2Cl6 C2Br6

Answers

Answer:

C2Br6

because bromine is a liquid volatile

According to the forces of attraction and boiling point C₂Br₆ is most volatile as its boiling point is very low.

What are forces of attraction?

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different  states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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LAST ATTEMPT! Covalent compound naming !

Answers

S2Cl4- disulphur tetrachloride
C5Br8- Pentacarbon octachloride
Cl2O3- Dichlorine trioxide
H2S3- trisulfane
S3F4-
N6S3-
Si7O2-

S2Cl4 = Disulfur Tetrachloride

C5Br8 = N/A

Cl2O3 = Dichlorine trioxide

H2S3 = Trisulfane

Formula: N4S4 = Trisulfur Tetrafluoride

Formula: CBr4 = Hexanitrogen trisulfide

Formula: SiO2 = Heptasilicon

Carry learning!

Stay safe!

Study hard!

the sequence of stages an organisms go through from one generation to the next lace where an organism lives is called in​

Answers

Answer:

A life cycle is the sequence of stages an organisms goes through from one generation to the next. Organisms that reproduce sexually can have different types of life cycles, such as haploid or diploid life cycles.

When 2.0 mol of methanol is dissolved in 45 grams of water, what is the mole fraction of methanol

Answers

The mole fraction of methanol in the mixture is 0.444

We'll begin by calculating the number of mole of water.

Mass of water = 45 gMolar mass of water = 18 g/molMole of water =?

Mole = mass / molar mass

Mole of water = 45 / 18

Mole of water = 2.5 moles

Finally, we shall determine the mole fraction of methanol.

Mole of water = 2.5 molesMole of methanol = 2 molesTotal mole = 2 + 2.5 = 4.5 moles

Mole fraction of methanol =?

Mole fraction = mole / total mole

Mole fraction of methanol = 2 / 4.5

Mole fraction of methanol = 0.444

Thus, the mole fraction of methanol is 0.444

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After you have analyzed the data from an experiment, what do you do? O A. Draw a conclusion a O B. Control the variables C. Make a hypothesis D. Identify the variables​

Answers

Answer:

A. Draw a conclusion

Explanation:

correct me if I'm wrong :>

Giúp mình 2 câu này với ạ
1, Pha 500ml dung dịch HCl 10% (w/v) từ dung dịch 37% (w/w) d=1.19 g/ml
2, Cách pha như thế nào để nhận được 200g dung dịch HCl 25% (w/w) từ dung dịch HCL 37% (d=1.19 g/ml)

Answers

Answer:it is wrong answer

Explanation:estro man

Draw and Name the Cis- isomer for the following compound:
CH3 - CH = CH - CH2 - CH3

Answers

Answer:

Cis-2-pentene or Z-2-pentene

A car hits a bug with a force of 100N. With how much force does the bug hit the car?

(A). 10 N

(B). 100 N

(C). 1000 N

Answers

Answer:

B

Explanation:

actin and reaction force are equal Newton 3 law

if atomic mass of Mg atom is 24g,find the mass of 1 Mg atom​

Answers

Answer:

4×10^-23g

Explanation:

Given atomic mass of Mg = 24g

To find mass of 1Mg = ?

So its fix that the atomic mass of Mg 24 g is 6.022×10^23

Then the Atomic mass of 1 Mg atom is = 24 ÷ 6.022×10^23

= 4×10^-23 g

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Suppose Bella wanted to make a gift basket worth $25 instead the gift basket must also have more wheat loaves than muffins show one way Bella can make the gift basket Which statement about US greenhouse gas emissions is supported by the bar graph? Emissions decreased every year between 2005 and 2014. Emissions increased substantially between 2005 and 2014. After peaking in 2007, emissions dropped every year through 2014. After peaking in 2007, emissions went up and down through 2014. the area of a triangle with vertices at (-3,-2),(3,-2),(1,2) isplease provide small explanation NEED HELP ASAP!!!!! Jeff and Ed are climbing a small mountain. The height Jeff climbed with respect to time is given by the function H(t) = -250|x 4| + 1,000. Eds height with respect to time is modeled in the graph.Ed and Jeff both climb to the mountains peak and then climb back down.The maximum height of the mountain is (blank) feet. Jeff takes (blank) hour(s) less than Ed to go up all the way and come back down. 1/ 99 to 4 significant figures present perfect tense Which sentence best corrects the clause fragment?When Thomas got a new bike for his birthday. He gave his old bike to his little brother.Thomas gave his old bike to his little brother. When he got a new bike for his birthday.He gave his old bike to his little brother. When Thomas got a new bike for his birthday.When Thomas got a new bike for his birthday, he gave his old bike to his little brother.He gave his old bike to his little brother, when Thomas got a new bike for his birthday. Answer question here The weather forecast calls for a total of 16 inches of snow over the next week. If it is estimated that 2.8 inches of snow will fall on Monday, 3.4 inches of snow will fall on Tuesday, 1.6 inches of snow will fall on Wednesday, 2.1 inches of snow will fall on Thursday, 1.7 inches of snow will fall on Friday, and 2.9 inches of snow will fall on Saturday. How much snow should fall on Sunday? What is the equation of the line: * parallel to the line y = -x + 5 and * passing through the point (2, -1) y = -x - 1/2 y = x + 2 y = -x + 4 y = x - 1 ________ is a transition that creates a cinematic motion by seamlessly animating between two slides. 7 is a factor of a 28b 16c 11d 4 What is the value of x in the solution to this system of equations? y+5x=-1 y=1/2x+32A. -198/29B. 29C. -6D. 37/33 JoAnn is making jewelry. Set an expression that shows how much it will cost Joanne for the long length chain bracelet and for b beads that cost $0.30 each. Then find the total cost of the jewelry lol JoAnn uses 34 beads in act iv of the tragedy of romeo and juliet, what is the true reason friar lawrence does not encourage paris in his plan to marry juliet? Why is water so susceptible to pollution?(1 point)It's a universal solvent.It occurs naturally as a solid, liquid, and gas.It can be found underground.Only 3% of Earth's water is freshwater. 15. According to the Declaration of Independence, when should the people have the right tochange their government? help me out if you know it I could not find the answer so I guessed and got it right here you go Use the formula Sn =a (1 - rn ) (1 r) to find the sum Sn for each of the infinite and finite geometric series.9. The first 9 terms of 12, 6 ,+ 3, - 10. The first 15 terms of -1, + 1, -11. The first 6 terms of 1, + 3, + 12. The first 10 terms of 2, 4, +