Write a few sentences about respiration

Answers

Answer 1

Answer:

reluctantly she pulled away, her pulse and respiration in a race.

its function is less that of respiration that of FIG.

the least wind raises clouds of fine dust, which fill the air, render it so opaque as to obscure the noonday sun, and make respiration difficult.


Related Questions

PLEASE HELP I NEED RIGHT NOW 30 POINTS!!
A boat is at sea, where there are sea currents. The boat uses its engine against the currents and is stationary in the water. If the force generated by the boat to push it forward is 24,000 N, what can be said about the force applied by the current? It is zero.
A: It is zero
B: It is greater than 24,000 N.
C: It is less than 24,000 N and greater than zero.
D: It is exactly 24,000 N.

Answers

Answer:

D

Explanation:

according to newtons 3rd law action is accompanied by an equal reaction that is equal in magnitude but opposite in direction so magnitude of force should be same

If the force generated by the boat to push it forward is 24,000 N, force applied by the current is exactly 24,000 N. Therefore, the correct option is option D.

What is force?

A force in physics is an effect that changes the velocity of a mass-moving object, causing it to accelerate from rest, for example. It is a vector quantity since it's capable of being a push or a pull and always has magnitude and direction. It is denoted by the letter F and is measured in newtons (N), the SI unit of force.

The net force that an object experiences is equivalent to the pace that its momentum varies over time, according to Newton's second law in its original formulation. This equation suggests that an object's acceleration seems inversely proportional to the total force that it experiences if the item's mass remains constant.  If the force generated by the boat to push it forward is 24,000 N, force applied by the current is exactly 24,000 N.

Therefore, the correct option is option D.

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PLEASE JUST PLEASEEE ANSWER THEM PLSSSS!!! I can’t fail bro plsss

Answers

Explanation:

K = °C + 273

1. -234 + 273 = 39K

2. 84 + 273 = 357K

3. 70 + 273 = 343K

4. -24 + 273 = 249K

5. 134 + 273 = 407K

6. 120 + 273 = 393K

-234 °C = 39K

84 °C = 357K

70 °C = 343K

-24 °C = 249K

134 °C = 407K

120 °C = 393K

Answer:

-234°C = 39K

84°C = 357K

70°C = 343K

-24°C = 249K

134°C = 407K

120°C = 393K

Explanation:

Hope it helps:)

Write the balanced chemical equation for the combustion of docosane C22H46.
Please help!! :(

Answers

Combustion is burning in oxygen.

C22H46 + O2 = CO2 + H20

balance the equation

2 C22H46 + 67 O2 = 44 CO2 + 46 H20

Hope this helps.

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A 10 liter tank of CO2 is at a pressure of 3.5 atm and a temperature of
25°C. How many moles of CO2 are in the tank?

Answers

The moles of CO2 are in the tank is mathematically given as

n=1.431

What are moles of CO2 are in the tank?

Question Parameters:

A 10-liter tank of CO2 is at a pressure of 3.5 atm and a temperature of

25°C.

Generally, the equation for the ideal gas  is mathematically given as

PV=nRT

Therefore

n=PV/RT

n=354.638kpa*10/8.314 J/mol·K *298k

n=1.431

In conclusion,  moles of CO2 is in the tank is

n=1.431

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Which of the following samples contains the largest number of atoms A 2.5mol CH4 B 10.0mol He C 4.0mol SO2 D 1.8 mol S8 E 3.0mol NH3







Answers

Answer:


1.8 mole of S8Explanation:A) 2.5×5=12.5B) 10×1=10C) 4×3=12D) 1.8×8=14.4so d) is correct

Explanation:https://brainly.in/question/11705275

According to a ph scale, which ph would be the strongest acid?.

Answers

Strongest acid would be Fluoroantimonic acid, with a theoretical Hammett acidity function (similar to pH) of -31.8 (extremely concentrated solution) and strongest base would be Sodium Hydroxide with a concentrated solution having pH of 14. Fluoroantimonic acid can be as low as -25 on the pH scale.

Describe haw an increase in burning fossil fuels would affect atmosphere temperatures

Answers

Answer:

When fossil fuels are burned, they release large amounts of carbon dioxide, a greenhouse gas, into the air. Greenhouse gases trap heat in our atmosphere, causing global warming. Already the average global temperature has increased by 1C.

Explanation:

which of the following is one part of a chemical formula

1. a number that shows the total atomic mass of the substance
2. the full name of each element shown
3. the symbol of each element in the substance ​

Answers

Answer:

3. the symbol of each element in the substance

Explanation:

What are the difference between malachite and pyrite and how they are alike

Answers

We can confirm that malachite and pyrite are similar in that they are both carbonate minerals, they differ however in chemical composition and characteristics.

What is malachite and pyrite?

Pyrite is a form of iron sulfide. This mineral has come to be known as the fool's gold, for its striking resemblance to gold. Malachite, on the other hand, has been known to closely resemble emeralds and is often used as a gemstone. They are both carbonate minerals, but malachite is copper-based, giving it a different chemical composition and properties.

Therefore, we can confirm that malachite and pyrite are similar in that they are both carbonate minerals, they differ however in chemical composition and characteristics.

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What happens to the mass, volume, and density of a solid object that is cut in half?

Answers

Answer:

The density remains the same

Please help! Choose one of the chemical reactions seen in the images on the last activity 1. Explain what happens in terms of energy/ enthalpy change. 2. Is AH negative or positive? The reaction choices are Fire, Photosynthesis, condensation, cokking an egg, or melting ice you can choose any one.​

Answers

Answer:

there's no images we need pictures

please answer below the question

Answers

d is an example of mixture

Answer:

A) air

Explanation:

What is a mixture?

A mixture is a combination of two or more elements that have not chemically combined with one another. Each element in the mixture still has its own properties.Examples: Air; air is made of nitrogen, oxygen, CO2, and more, but they haven't chemically combined

What is a compound?

A compound is a substance that is made by two or more elements chemically combining with one another.

Write the balanced equation for the ionization of the weak base pyridine, c5h5n , in water, h2o. Phases are optional.

Answers

The balanced equation for the ionization of the weak base pyridine,C5H5N in water, H2O

C_5H_5N ( aq.) + H2O ( l) ---------> C5H5NH+ (aq.) + OH- (aq.)

What is the balanced equation for the ionization?

Generally, Pyridine is characterized by a ring structure, in this characteristic ring structure N is sp2 hybridized, hence creating a lone pair present on N so s - character is more, as well as lone pair, is present.

Therefore, Considering The following functions of the equation:weak base pyridine,C5H5N in water, H2O

We write the balanced equation for the ionization as

C_5H_5N ( aq.) + H2O ( l) ---------> C5H5NH+ (aq.) + OH- (aq.)

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Which statement is true about molecule speed? (1 point)
a. Faster molecules have more energy than slower molecules.
b: Slower molecules are smaller than faster molecules.
c;Slower molecules are oriented better than faster molecules
d:Faster molecules have fewer collisions than slower molecules.

Answers

Faster molecules have fewer collisions than slower molecules is True about molecular speed.

What is Molecular speed?

Molecular speed refers to the average distance gases or molecules travelled atca particular time rate.

It is valid in ideal gas, where the molecules do not interact with others.

Average molecular speed = Square root (3 (ideal gas constant) * (Temperature)/m)

Therefore, Faster molecules have fewer collisions than slower molecules is True about molecular speed.

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Identify important characteristics, chemical properties, physical properties, pH ranges, and examples of acids and bases.

Answers

Answer/Explanation:

Acids:

Physical ⇒ Sour Taste, Increases the concentration of hydrogen ions when added to water

Chemical ⇒ Corrosive (Burns your skin and breaks down other materials), Forms hydrogen gas when it comes in contact with a metal, Forms salt and water when added to a base

Example: Tomatoes

Bases:

Physical ⇒ Bitter taste ( Never taste or smell a substance unless your parent/guardian tells you that it is okay), Slippery feeling(never touch a substance unless your parent/guardian tell you that is okay)

Chemical ⇒ Increases the concentration of hydroxide ions when added to water, Forms salt and water when added to an acid

Example: Soap, Clorox

[RevyBreeze]

Ammonia (NH3(g), Delta. Hf = –46. 19 kJ/mol) reacts with hydrogen chloride (HCl(g), Delta. Hf = –92. 30 kJ/mol) to form ammonium chloride (NH4Cl(s), Delta. Hf = –314. 4 kJ/mol) according to this equation: NH3(g) HCl(g) Right arrow. NH4Cl(s) What is Delta. Hrxn for this reaction? kJ.

Answers

The change in enthalpy of the given reaction is 175.91 kJ/mol, which shows that reaction is exothermic.

How we calculate ΔH for the reaction?

Change in enthalpy for the overall reaction will be calculated as:

ΔH = Enthalpy (H) of the product - Enthalpy (H) of the reactant

Given chemical reaction is:

NH₃(g) + HCl(g) → NH₄Cl

Heat of enthalpy of NH₃ = -46. 19 kJ/mol

Heat of enthalpy of HCl = -92. 30 kJ/mol

Heat of enthalpy of NH₄Cl = -314. 4 kJ/mol

Enthalpy of the reaction is calculated as:

ΔH = -314. 4 - [-46. 19 + (-92. 30)]

ΔH = -314. 4 - (-138.49)

ΔH = -175.91 kJ/mol

Hence, ΔH for the reaction is -175.91 kJ/mol.

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Please someone help me ASAP. This assignment is due in 10 min!!​

Answers

Answer:

Baseball: PE

Satellite: KE

Sky Diver: KE

Basketball: PE

Arrow: KE

Cliff Diver: PE

Swinging Girl: PE

Grasshopper: PE

Bobsled: KE

Slingshot: PE

Explanation:

  For a thrown object, KE and PE are in a sort of equilibrium. As the object climbs towards its highest point, it slows down as the initial KE that initiated the movement runs out. At the highest point, it is out of kinetic energy and full of potential energy. Gravity then pulls on the object and causes it to accelerate, thus giving it more KE. The PE at the top of the arc is because at that point, the object has the potential to fall to earth. This is the reasoning behind the baseball, swinging girl, and grasshopper.

  This is, in a way, the same reasoning behind the other potential energy cases as well. The basketball, cliff diver, and slingshot are all about to start moving. The first two will be pulled by gravity and the last one will be propelled be the stretchy slingshot material attempting to snap back into place.

  All of the KE examples are due to the object or person actively moving towards or around something. This means that they have kinetic energy--the energy of movement!

Answer:

Baseball: Potential Energy

Satellite: Kinetic Energy

Sky Diver: Kinetic Energy

Basketball: Potential Energy

Arrow: Kinetic Energy

Cliff Diver: Potential Energy

Swinging Girl: Potential Energy

Grasshopper: Potential Energy

Bobsled: Kinetic Energy

Slingshot: Potential Energy

Explanation:

Type the correct answer in the box. Express your answer to three significant figures. Calcium nitrate reacts with sodium phosphate to form sodium nitrate and calcium phosphate. Given 96. 1 grams of calcium nitrate, what’s the theoretical yield of calcium phosphate? Use the periodic table and the polyatomic ion resource. The mass of calcium phosphate the reaction can produce is grams.

Answers

6.07 grams is the theoretical yield of calcium phosphate (Ca₃(PO₄)₂).

How we calculate mass from moles?

Mass of any substance can be calculated by using moles as:

n = W/M, where

W = required mass

M= molar mass

Given chemical reaction is:

3Ca(NO₃)₂ + 2Na₃PO₄ → 6NaNO₃ + Ca₃(PO₄)₂

From the stoichiometry it is clear that:

3 moles of Ca(NO₃)₂ = produce 1 mole of Ca₃(PO₄)₂

Given mass of Ca(NO₃)₂ = 96.1g

Mole of Ca(NO₃)₂ = 96.1g/164g/mol = 0.5859moles

So, 0.5859 moles of Ca(NO₃)₂ = produce 0.5859×1/3 = 0.0196 moles of Ca₃(PO₄)₂

Required mass of Ca₃(PO₄)₂ will be calculated by using moles as:

W = 0.0196mole × 310g/mole = 6.07 grams

Hence, 6.07 grams is the theoretical yield of calcium phosphate.

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What is the percentage of oxygen in carbon dioxide (CO2)

Answers

Explanation:

carbon dioxide has a percent composition of 72.7% oxygen, i.e. for every 100 g of carbon dioxide you get 72.7 g of oxygen.

Calculate the amount of CO2 made when 6.4g of methane is burnt

Answers

Answer:

Balanced equation: CH4(g) + 2O2(g) → CO2(g) + 2H2O(l). 1mol CH4 reacts with 2 mol O2 to produce 1 mol CO2. Molar mass O2 = 32g/mol.

Explanation:

hope it helps you

A gas sample has a volume of 25.0 milliliters at a pressure of 1.00 atmosphere. If the volume increases to 50.0 milliliters and the temperature remains constant, the new pressure will be

Answers

Answer:

P2 = 0.5

Explanation:

V1 = 25.0ml (must be convert to L) = 0.025L

P1 = 1.00 atm

V2 = 50.0ml = 0.05L

P2 =?

To calculate this question, must follow this equation below

P1V1 = P2V2

1.00 x 0.025 = P2 x 0.05

0.025 = P2 x 0.05 (divided both sides by 0.05 to left P2)

0.5 = P2

So 0.5 is the answer!

What evidence supports the hypothensis that dogs might use a magnetic sence to navigate

Answers

Answer:

Explanation:

Yes, a new research indicates that dogs might use a magnetic sense to navigate. Dogs has world class nose which helps them to navigate to their destination but it also has a magnetic compass that helps them in navigation. The dogs use magnetic field of the earth to find out shortcut ways in the unknown land or terrain so the hypothesis is right that dogs used magnetic sense for navigation.

HCl + CaCO3 → CACl2 + H2O + CO2 balance this equation

Answers

Answer:

Balance the equation: CaCO3 + HCl → CaCl2 + H2O + CO2 -

Explanation:

Answer:

2HCl + CaCO3 → CaCl2 + H2O + CO2

That's the balanced equation

Convert 30.0g NaNO3 to moles
please help

Answers

Answer:

0.4moles

Explanation:

 1  grams NaNO3 to mol = 0.01177 mol

30 grams NaNO3 to mol = 0.35296330934634 mol

but if we round that up it is 0.4moles

How is desalination different from water reclamation? a. desalination is less expensive than water reclamation. b. desalination recharges aquifers. c. desalination provides water suitable for drinking. d. none of the above please select the best answer from the choices provided a b c d

Answers

Desalination is different from water reclamation because desalination provides water that is suitable for drinking. Hence, the correct option is C.

What is Desalination?

Desalination is the process of removing salts or other minerals and contaminants from seawater, brackish water, and wastewater effluent and it is an increasingly common solution to obtain fresh water for human consumption and domestic/industrial utilization.

Water reclamation is the process of converting municipal wastewater (sewage) or industrial wastewater into water that can be reused for a variety of purposes. Water reclamation is also known as wastewater reuse, water reuse, or water recycling.

On the other hand, Desalination is an expensive process. Desalination is an artificial process and would not add back to groundwater storage. Desalination provides water suitable for drinking.

Therefore, desalination is different from water reclamation because desalination provides water that is suitable for drinking. Hence, the correct option is C.

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Answer:

C

Explanation:

Edge 2022 Trust the process


Which of the following best describes the forces when there are different-sized forces from opposite directions acting on an object?

Answers

Answer:

it is magnetic force

Explanation:

Magnetic force is the best force when there are different sized forces from opposite direction acting on an o jet it only work when the object is metal like iron nail,aluminium etc

How noble gases are important for the stability of an atom?

Answers

Answer:

they are most stable

Explanation:

due to having maximum number of valence electrons their outer shell can hold.

they rarely react with other elements since they are already stable.

A gas at a constant pressure occupies 2.24 L at 52 C. If the sample is cooled until it
takes up 1.66 Lwhat is the new temperature?

Answers

The new temperature of the gas is -32.15 °C or 240.85 K.

The new temperature of the gas can be calculated using the mathematical representation of Charles's law

Charles's law

Charles's law states that at constant pressure, the volume of a fixed mass of gas is directly proportional to its absolute temperature.

Formula:

V/T = V'/T'................ Equation 1

Where:

V = Initial volume of the gasT = Initial temperature of the gasV' = Final Volume of the gasT' = Final temperature of the gas.

Make T' The subject of the equation

T' = V'T/V............. Equation  2

From the question,

Given:

V = 2.24 LV' = 1.66 LT = 52 °C

We need to convert the initial temperature T above from °C to Kelvin (K) by adding 273.

T = (273+52) = 325 K

Substitute these values into equation 2

T' = (1.66×325)/2.24T' = 539.5/2.24T' = 240.85 K.T' = -32.15 °C.

Hence, The new temperature of the gas is -32.15 °C.

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Which particle has a mass of
9.11 x 10-28 g and charge of -1?
electron
proton
neutron

Answers

The answer is electrons :)) it’s easy

Pressure is defined as _______.1

Answers

Answer:the perpendicular force per unit area

pressure, in the physical sciences, the perpendicular force per unit area, or the stress at a point within a confined fluid.

Explanation:

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