What provides the source of energy for the water cycle?

rain
soil
the Sun
the Moon

Answers

Answer 1
The sun

It stimulates the evaporation of water
Answer 2
The sun It helps evaporate water and create more for for plants and food like crops to grow.

Related Questions

Why do clumps of particles have slower reaction rates than particles that are separated?

Answers

Explanation:

Cause the clumps are so compacted together that it is harder to brake apart but the one that are separated are easy cause they do not have all the pressure on them and when they go to add reaction it is faster

explain why vapour pressure increases with increasing temperature.​

Answers

As the temperature of a liquid increases, the kinetic energy of its molecules also increases. And as the kinetic energy of the molecules increases, the number of molecules transitioning into a vapor also increases, thereby increasing the vapor pressure.

empirical formulas for C2N2
empirical formulas for C6H6
empirical formulas for C9H20
empirical formulas for P4O10
empirical formulas for B2H6

Answers

Answer:

CN

CH

C9H20

P205

BH3

Explanation:

The sink-float method is often used to identify the type of glass material found at crime scenes by determining its density.Several different types of glass of known density are placed into solutions of varying densities. Determine whether each glasspiece will sink, float, or do neither when immersed in the given solution.Glass that will sinkGlass that will floatGlass that will not sink or floatalkali zinc borosilicate with a density of2.57 g/mL in a solution with a densityof 2.46 g/mLsoda borosilicate with a density of 2.27 g/mLin a solution with a density of 2.62 g/mLalkali strontium with a density of 2.26 g/mL ina solution with a density of 2.34 g/mLpotash borosilicate with a density of2.16 g/mL in a solution with a densityof 2.16 g/mLpotash soda lead with a density of 3.05 g/mLin a solution with a density of 1.65 g/mLAnswer Bankterms of usecontac

Answers

Answer:

Glass that will sink: alkali zinc borosilicate with a density of2.57 g/mL in a solution with a density of 2.46 g/mL; potash soda lead with a density of 3.05 g/mL in a solution with a density of 1.65 g/mL

Glass that will float: soda borosilicate with a density of 2.27 g/mL in a solution with a density of 2.62 g/mL; alkali strontium with a density of 2.26 g/mL in a solution with a density of 2.34 g/mL

Glass that will not sink or float: potash borosilicate with a density of2.16 g/mL in a solution with a density of 2.16 g/mL

Explanation:

The density of an object is a ratio of the mass (or quantity of matter in the object) to its volume.

Mathematically, density = mass/ volume.

The more dense an object, the higher will be its dense. Density can be thought of as a comparison of how heavy objects having the same are. Objects with a higher density, are heavier than objects with a lower density. For example, between equal volumes of air and water, water is heavier.

The density of solid object will determine whether it will float, sink or neither float nor sink in a given liquid. The conditions for floating of objects in a liquid is given as follows:

Density of solid > Density of liquid : solid will sink

Density of solid = Density of liquid : solid will neither sink nor float

Density of solid < Density of liquid : solid will float

Using the above criteria to analyze the given glass materials in their respective liquids:

Glass that will sink: alkali zinc borosilicate with a density of2.57 g/mL in a solution with a density of 2.46 g/mL; potash soda lead with a density of 3.05 g/mL in a solution with a density of 1.65 g/mL

Glass that will float: soda borosilicate with a density of 2.27 g/mL in a solution with a density of 2.62 g/mL; alkali strontium with a density of 2.26 g/mL in a solution with a density of 2.34 g/mL

Glass that will not sink or float: potash borosilicate with a density of2.16 g/mL in a solution with a density of 2.16 g/mL

A catalyst will

a) Increase the reaction rate

b) Move the equilibrium to the right

c) Be consumed by the reaction

d) Increase the activation energy

Answers

Answer:

increase the chemical rate

1. Two body systems Which of the following is NOT a part of the integumentary system of the body?
A. hair
B. bones
C. skin
D. finger and toe nailswork together to help remove waste products from blood.
2. What are these two systems?
A. circulatory and excretory
B. skeletal and digestive
C. circulatory and integumentary
D. muscular and excretory


3. One of the functions of the endocrine system in the body is to -
A. circulate blood to all parts of the body
B. collect waste products and remove them from the body
C. provide a strong framework for the body
D. produce enzymes to help digest food
6. When a person’s body needs food, the brain helps maintain homeostasis by sending signals that make the person
A.feel hungry.
B. perspire.
C. put on a sweater.
D. feel tired

7. The largest human body organ which regulates temperature and serves as a barrier against harmful microorganisms belongs to the -
A. circulatory system
B. nervous system
C. digestive system
D. integumentary system

8. Which of the following is NOT a part of the respiratory system?
A. diaphragm
B. esophagus
C. lungs
D. trachea
9. What would happen to your body if you had little or no bone marrow?
A. Your other systems would make up for it
B. You would not have enough red blood cells
C. Nothing would happen to you.
D. You would not have enough cartilage.

Answers

The answer is B)bones

One mole of a metallic oxide reacts with one mole of hydrogen to produce two moles of the pure metal
and one mole of water. 5.00 g of the metallic oxide produces 2.32 g of the metal. What is the metallic
oxide? (Use molar masses)

Answers

Answer:

Lithium oxide, Li₂O.  

Explanation:

Hello!  

In this case, according to the given amounts, it is possible to write down the chemical reaction as shown below:

[tex]M_2O+H_2\rightarrow 2M+H_2O[/tex]  

Which means that the metallic oxide has the following formula: M₂O. Next, we can set up the following proportional factors according to the chemical reaction:

 

Thus, we perform the operations in order to obtain:

[tex]\frac{10X}{(2X+16)}=2.32[/tex]  

So we solve for x as shown below:

[tex]10X=2.32(2X+16)\\\\10X=4.64X+37.12\\\\X=\frac{37.12}{10-4.64}\\\\X= 6.93g/mol[/tex]  

Whose molar mass corresponds to lithium, and therefore, the metallic oxide is lithium oxide, Li₂O.  

Best regards!

Which of the following is formed when an acid reacts with a base? (1 point)
Alkaline
Hydrogen ion
Hydroxide ion
Salt

Answers

Answer:

Probably Alkaline

Explanation:

Not sure at all.

Salt because since the reaction of an acid with a base is a neutralization reaction then the products would be salt and water.

When 42.5 g of benzamide (C7H7NO) are dissolved in 500 g of a certain mystery liquid X, the freezing point of the solution is 6.40 °C less than the freezi point of pure X. Calculate the mass of iron(III) nitrate (Fe(NO3)3 that must be dissolved in the same mass of X to produce the same depression in freezing point.

Answers

Answer:

21.3g of Fe(NO₃)₃ are required to produce the same depression in freezing point of solution.

Explanation:

Freezing point depression is a colligative property which indicates, in determined mixture, the freezing point of solution is lower that the freezing point of the solvent, according the amount of solute.

Formula is: ΔT = Kf . m . i

Kf is the cryoscopic constant, which is particular for each solvent. We do not have that data, so we need to find it out in order to solve the question:

ΔT = Freezing point of pure solvent - Freezing point of solution.

This data is known → 6.40°C

m, means molality, moles of solute in 1kg of solvent. Let's get the moles of benzamide: 42.5 g . 1mol / 121g = 0.351 moles

m = 0.351 mol / 0.5kg = 0.702 m

As benzamide is an organic compound i, = 1. i are the number of ions dissolved in solution. Let's find out Kf:

6.40°C = Kf . 0.702 m . 1

6.40°C /0.702m = 9.11 °C/m.

Let's go to the next question.

ΔT is the same → 6.40°C

But this is, an inorganic salt, a ionic salt: Fe(NO₃)₃ →  1Fe³⁺  + 3NO₃⁻

For this case, we have 1 mol of Iron(III) and 3 nitrates, so i = 4

Let's replace data: 6.40°C = 9.11 °C/m . m . 4

6.40°C / (9.11 m/°C . 4) = 0.176 m

This data represents that, in 1 kg of solvent we have 0.176 moles of nitrate.

Mass of solvent X required in this case is 0.500 kg, so, the moles that are contained are: 0.500 kg . 0.176 mol/kg = 0.088 mol

Let's determine the mass of salt: 0.088 mol . 241.85g /1mol = 21.3 g

Calculate the [H+]
and pH of a 0.000295 M
butanoic acid solution. Keep in mind that the a
of butanoic acid is 1.52×10-5

Answers

[H⁺]=6.696 x 10⁻⁵

pH = 4.174

Further explanation

Given

The concentration of 0.000295 M (2.95 x 10⁻⁴ M) butanoic acid solution

Required

the [H+]  and pH

Solution

Butanoic acid is the carboxylic acid group. Carboxylic acids are weak acids

For weak acid :

[tex]\tt [H^+]=\sqrt{Ka.M}[/tex]

Input the value :

[H⁺]=√1.52 x 10⁻⁵ x 2.95 x 10⁻⁴

[H⁺]=6.696 x 10⁻⁵

pH = - log [H⁺]

pH = - log 6.696 x 10⁻⁵

pH = 5 - log 6.696

pH = 4.174


b) All atoms contain
charged electrons.

Answers

Answer:

b) All atoms contain

charged electrons.

Explanation:

What is the Chemical formula for Hexacarbon octaphosphide?

Answers

Answer:C6P8

Explanation:

How long will it take for the concentration of A to decrease from 0.850 M to 0.205 for the reaction A → Products? (k = 0.0882 M⁻¹s⁻¹)

Answers

Answer:

16.1 s

Explanation:

The reaction,  A → Products, follows first order kinetics.

So,

ln[A] = ln[A]o - kt

Where;

[A] = concentration at time= t

[A]o = initial concentration

k= rate constant

t = time taken

ln(0.205) = ln(0.850) - 0.0882t

ln(0.205) -  ln(0.850) = - 0.0882t

-1.5847 - (-0.1625) = - 0.0882t

-1.5847 + 0.1625 = - 0.0882t

-1.4222 = - 0.0882t

t = -1.4222/- 0.0882

t = 16.1 s

Based on first order kinetics, the time taken for the concentration of A to decrease from 0.850 M to 0.205 M is 16.1 seconds.

What is order of a reaction?

The order of a reaction refers to the relationship between the rate of a reaction and the the concentration of each reactant.

For a first-order reaction, the rate is dependent on the concentration of a single species.

The reaction,  A → Products is a first order reaction.

Therefore, using the first order kinetics equation

ln[A] = ln[A]° - kt

Where;

[A] = concentration at time= t[A]° = initial concentrationk= rate constantt = time taken

Substituting the values:

ln(0.205) = ln(0.850) - 0.0882t

ln(0.205) -  ln(0.850) = - 0.0882t

-1.5847 - (-0.1625) = - 0.0882t

-1.5847 + 0.1625 = - 0.0882t

-1.4222 = - 0.0882t

t = -1.4222/- 0.0882

t = 16.1 s

Therefore, the time taken for the concentration of A to decrease from 0.850 M to 0.205 M is 16.1 seconds.

Learn more about order of reaction at: https://brainly.com/question/7694417

C3H8 (g)+ 502 (g)  3CO2 (g) + 4 H2O (g) + 531 kcal

Answers

Answer:

Exotérmica.

Explanation:

¡Hola!

En este caso, dado que la mayoría de reacciones de combustión son exotérmicas, al generar calor en los productos, es posible inferir que esta reacción, referida a la combustion de metano es exotérmica debido a lo anteriormente mencionado, ya que el término de energía de reacción, 531 kcal, está al lado de los productos, lo que quiere decir que es energía generada.

¡Saludos!

PLEASE PLEASE HELP!!!

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the
correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag
the item to the trashcan. Click the trashcan to clear all your answers.
Make a Punnett Square for two smooth seed hybrid pea plants (Ss)
Click once to select an item at the bottom of the problem.
Click again to drop the item in its correct place.
S
SS SS SS S

Answers

the top middle box is S, to the right of it is s, middle row left box is S, middle row middle box is SS, middle row right box is Ss, bottom row left box is s, bottom row middle box is Ss, and bottom row right box is ss

Compute the value of the molar heat capacity at constant volume, CVCV, for CO2CO2 on the assumption that there is no vibrational energy. (Note: CO2CO2 is linear; SO2SO2 and H2SH2S are not. Recall that a linear polyatomic molecule has two rotational degrees of freedom, and a nonlinear molecule has three.)

Answers

Answer:

Explanation:

Molar heat capacity at constant volume Cv  of a gas = n x .5 R where n is degree of freedom of the gas molecules

CO₂ is a linear molecule , so number of degree of freedom =  3 + 2 = 5

3 is translational and 2 is rotational degree of freedom . There is no vibrational degree of freedom given .

So Cv = 5 / 2 R

= 2.5 R .

Which components of the apparatus affect in motion? If you answer this and it has non to do with the question imma report u!!!!

Answers

Answer:

Explanation:

An internal force acts between elements of the system. Only external forces affect the motion of a system, according to Newton's first law. Newton's second law states that a net force on an object is responsible for its ... Prior to manned space flights, rocket sleds were used to test aircraft, missile equipment, and physiological

Density of water is affected by (select all that apply)

A) Animals that life in the area
B) Salinity (salt concentration)
C) Temperature of water
D) Amount of plants in an area
E) How close the water is to land

Answers

Density of water is affected by, Temperature of water, and I also think How close the water is to land.
Hope this helped!

During life body pH is ___ shortly after death the pH becomes ___ after time the pH becomes ___. (A) Acidic, neutral, basic (B) Neutral, acidic, basic (C) Neutral, basic, acidic (D) Acidic, acidic, basic

Answers

(B) neutral, acidic, basic.

Read the list of common household substances.

Yogurt, soaps, window cleaner, vinegar

Which of these substances are likely to have a slippery feel? (1 point)
Yogurt, soaps
Yogurt, vinegar
Soaps, window cleaner
Window cleaner, vinegar

Answers

Answer:

A

Explanation:

Rank the effective nuclear charge Z* experienced by a valence electron in each of these atoms:

atom Z* experienced by a valence electron.
An atom of carbon.
An atom of fluorine.
An atom of beryllium.
An atom of boron.

Answers

Answer:

The atoms are ranked in decreasing order as follows:

Fluorine ---4

Carbon ----3

Boron ------2

Beryllium --1

Explanation:

Effective nuclear charge (Zeff) is defined as the difference between the actual nuclear charge (the atomic number, Z) and the shielding constant (S).

It is calculated by finding the atomic number and electronic configuration, attributing a shielding value to each electron, adding all the shielding values and using the formula:

                 Z eff = Z - S

Effective nuclear charges:

An atom of carbon: 3.25

An atom of fluorine: 5.20

An atom of beryllium: 1.95

An atom of boron: 2.60

When would a cell use Active Transport? Mark all that apply.


a. When the cell needs to move a compound down its concentration gradient.

b. When the cell needs to move a compound against its concentration gradient.

c. When the cell needs to move a polar compound.

d. When the cell needs to move a nonpolar compound.

e. When the cell needs to move an ion.

Answers

Answer:

Option B, When the cell needs to move a compound against its concentration gradient.

Explanation:

A cell uses active transport when it has to transport substances against the concentration gradient across its membrane.

In active transport additional energy is used (generally provided by energy molecules like ATP) to push the substance across any membrane from low concentration side  to high concentration side.

Option B is correct

What describes how a liquid flows and diffuses?

A: Fluidity

B: Viscosity

C: Surface tension

D: Condensation

Answers

The answer is option is a fluidity

Answer:

A. According to the kinetic-molecular theory of liquids, the particles are not bound together in fixed positions; instead they move about constantly giving them their fluidity

Indicate whether each statement is true or false.

a. When a solution is made, the enthalpy of mixing is always a positive number.
b. An increase in entropy favors mixing.
c. A solute will dissolve in a solvent if solute-solute interactions are stronger than solute-solvent interactions.

Answers

Answer: a. False.

b. True

c. False

Explanation:

a. When a solution is made, the enthalpy of mixing is always a positive number.

This is false. It should be noted that the nature of reaction determine the enthalpy which can either be positive or can be negative.

b. An increase in entropy favors mixing.

This is true because when molecules get randomly distributed, they mix with one another. Therefore, an increase in entropy favors mixing.

c. A solute will dissolve in a solvent if solute-solute interactions are stronger than solute-solvent interactions.

This is false. This is because the solute-solute interactions have to be weaker and not stronger.

a. When a solution is made, the enthalpy of mixing is always a positive number. FALSE

b. An increase in entropy favors mixing. TRUE

c. A solute will dissolve in a solvent if solute-solute interactions are stronger than solute-solvent interactions. FALSE

Entropy

Entropy is the measure of a system's thermal energy per unit temperature that is unavailable for doing useful work

Entalphy

Enthalpy is the sum of the system's internal energy and the product of its pressure and volume.

Learn more about entalphy:

https://brainly.com/question/25758173

The octane number of gasoline is a measure of octane activity. The octane activity is determined by comparing the engine performance using gasoline and known mixtures of isooctane and n-heptane.

a. True
b. False

Answers

Answer:

A. True

Explanation:

The octane number is determined by comparing the characteristics of gasoline to isooctane (2,2,4-trimethylpentane) and heptane. The correct option is option A.

Basically, the higher the octane  number, the  greater the resistance of the gasoline to knocking.

What is the M, of C3H,COONa? A: Na = 23; C = 12, 0 = 16:
110
87
98
103​

Answers

Answer: Molecular mass of [tex]CH_3COONa[/tex] is 82 g

Explanation:

Molecular mass (M) is defined as the mass in grams of 1 mole of a substance.

S.I Unit of Molar mass is gram per mole and it is represented as g/mol.

Atomic Mass of Carbon (C) = 12 g

Atomic Mass of hydrogen (H) = 1 g

Atomic Mass of oxygen (O) = 16 g

Atomic Mass of sodium (Na) = 23 g

Molecular mass of [tex]CH_3COONa[/tex] = 12(1)+1(3)+12(1)+16(2)+23(1) = 82 g

Which term is used to describe the variety
of inheritable traits in a species?

Ecosystem diversity

Genetic diversity

Natural selection

Species diversity

Answers

Genetic diversity.

Genetic diversity refers to genetic variability within species. Each individual species possesses genes which are the source of its own unique features: In human beings, for example, the huge variety of people's faces reflects each person's genetic individuality.

So, Ecosystem Diversity is a term that describes how different habitats of organisms are. For example, the fact that our planet has deserts, tundras but also estuaries is a sign of the diversity of its ecosystems. Species diversity refers to the number of different species that inhabit a specific ecosystem or the whole biosphere; the more, the better for species diversity. Genetic diversity is the term we are looking for; it means the variation in genes (usually in one species) that leads to different inheritable traits (in members of the same species). For example eye color is an inheritable trait that showcases genetic diversity since there are many genes that determine a different color such as brown, blue, green etc. (even though the environment plays a role too). Finally, natural selection is a theory about the survival of the fittest due to competition. It relates to inheritable traits and their diversity but it does not describe them.

A diver planning to dive to a depth of 100 ft can choose to breathe air that is a mixture of oxygen, nitrogen, and helium. If the total pressure of the air in the tank is 3040 mm Hg , and the partial pressures of O2 and He are 304 mm Hg and 1520 mm Hg , respectively, what is the partial pressure of N2

Answers

Answer:

1216 mmHg = Partial pressure N₂

Explanation:

In a mixture of n gases, the partial pressure of each compound follows the equation:

Total pressure = Partial pressure n₁ + Partial pressure n₂ + Partial pressure n₃ + Partial pressure n₄ + Partial pressure n₅ + ... + Partial pressure nₙ

In a mixture of O₂, He and N₂, the total pressure = 3040mmHg is defined as:

3040 mmHg = Partial pressure O₂ + Partial pressure He + Partial pressure N₂

Replacing:

3040 mmHg = 304 mmHg + 1520 mmHg + Partial pressure N₂

3040 mmHg = 1824 mmHg + Partial pressure N₂

1216 mmHg = Partial pressure N₂


What is the cathode ray? How was the Nature of cathode rays determined?​​

Answers

Answer:

Cathode rays are streams of electrons observed in discharge tubes. In 1897, British physicist J. J. Thomson showed that cathode rays were composed of a previously unknown negatively charged particle, which was later named the electron. Cathode-ray tubes (CRTs) use a focused beam of electrons deflected by electric or magnetic fields to render an image on a screen.

Nuclear energy could come from
A
kicking a soccer ball.

B
heat inside the Earth.

C
splitting atoms apart.

D
solar panels.

Answers

Answer:

C Splitting atoms apart

The answer would be C.splitting atoms apart

Hope this helps

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