What do all living organisms in an area make up?

Answer:

Nitrogen, the most abundant element in our atmosphere, is crucial to life. Nitrogen is found in soils and plants, in the water we drink, and in the air, we breathe. It is also essential to life: a key building block of DNA, which determines our genetics, is essential to plant growth, and therefore necessary for the food we grow. But as with everything, balance is key: too little nitrogen and plants cannot thrive, leading to low crop yields; but too much nitrogen can be toxic to plants, and can also harm our environment. Plants that do not have enough nitrogen become yellowish and do not grow well and can have smaller flowers and fruits. Farmers can add nitrogen fertilizer to produce better crops, but too much can hurt plants and animals, and pollute our aquatic systems. Understanding the Nitrogen Cycle—how nitrogen moves from the atmosphere to earth, through soils, and back to the atmosphere in an endless Cycle—can help us grow healthy crops and protect our environment.

Explanation:

Answer:

The answer is Na2CO3.Option a

Answer:71.25

Explanation:

The molar mass of a sample of gas that has a density of 2.85g/L at 101 kPa pressure and 29°C is 71.37  g mol⁻¹ and It can be solved using Ideal gas law.

The ideal gas law is an equation of state that describes ideal gases.

This equation of state relates a gas’s pressure, volume, temperature, and mass, and is very useful for describing how gases will behave in ideal conditions.

This is the most common equation of state for gases.

Ideal Gas equation ;

PV = nRT

Molar mass (Mm) = m /n

Where ;

we also know,

Density (D) = m / v

Where ;

Now, Putting the formula of Molar mass and Density in ideal gas equation we get ;

Molar mass = D RT/ P

Given ;

Putting all the values in  the above equation of molar mass ;

Molar mass = 2.85 x 0.0821 x 302 / 0.99

                    = 71.37  g mol⁻¹

Learn more about Ideal gas law here ;

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Answer:

organelle are located in da cytoplasm of eukaryotic and prokaryotic cells

Hope this helps!

respiratory tract

The trachea is part of the lower respiratory tract, along with the lungs, bronchi, bronchioles, and alveoli.

Answer:

1) The mole ratio of KClO₃ to 3O₂ is 2:3

The reciprocal of the mole ratio of KClO₃ to 3O₂ is 3:2

2) The mole ratio of K to NaNO₃ is 1:1

The reciprocal of the mole ratio of K to NaNO₃ is 1:1

Explanation:

The mole ratio (also known as mole-mole ratio) of two compounds involved in a chemical reaction, is the ratio of the number of moles of the compounds in the reaction which can be obtained from the coefficients of the compounds in the balanced chemical reaction

The mole ratio of compound A to compound B = A:B = A/B

1)The given chemical reaction can be expressed as follows;

2KClO₃ → 2KCl + 3O₂

Therefore;

[tex]The \ mole \ ratio \ of \ KClO_3 \ to \ O_2 = \dfrac{2 \ moles \ of \ KClO_3}{3 \ moles \ of \ O_2} = \dfrac{2}{3} = 2:3[/tex]

[tex]The \ reciprocal \ of \ the \ mole \ ratio \ of \ KClO_3 \ to \ O_2 = \dfrac{3 \ moles \ of \ O_2}{2 \ moles \ of \ KClO_3} = \dfrac{3}{2} = 3:2[/tex]

2) In the reaction NaNO₃ + K → Na + KNO₃

The mole ratio of K to NaNO₃ = 1:1

Therefore;

The reciprocal of the mole ratio of K to NaNO₃ = 1:1

Answer:

(14.5 mol) x (6.022 x 10^23 atoms/mol) = 8.73 × 10^24 atoms

Explanation:

pls mark brainliest

Answer: c

Explanation:

Answer:

B. endothermic reaction

Explanation:

Answer:

2

b= they are grouped differently, but all the atoms are still there.

Answer:

its both because your hight can change if u do exercises

Hope it helped.

Answer:

coeffeicent!

Explanation:

this balances equations and also changes the amount of a compound/element present

Explanation:

A gas is state of matter in which there is large intermolecular distance and hence, a weaker molecular force of attraction in comparison to solids and liquids. therefore, it impart certain properties to gases which are uncommon in solids and liquids

Properties of a gas includes:

Exert pressure on the container

Highly compressible

Low density

and readily soluble in other mediums

Hence, high density is not a property of a gas.

Answer:

your answer is C

Explanation:

The electron-dot structure of NH3 places one set of nonbonding electrons in the valence shell of the nitrogen atom. that means there are three bonded atoms and one single pair for a coordination number of four surrounding  the nitrogen, the same occurs in water to. along with the Lewis dot structure for ammonia, NH3. the non bonding atoms are basically like hydrogen atoms the try to refuse to bond and they can't be fused unless the right conditions are met.

Density (ρ) = 835 kilogram/cubic meter

Steps:

ρ =  

m

V

=  

83.5 gram

100 milliliter

=  0.835 gram/milliliter

=  835 kilogram/cubic meter

Answer:

The correct answer is - 14.

Explanation:

In the given molecular formula of the aluminum sulphite which is Al2(SO3)3, this molecular formula there different type of elements are bonded together to form this compound each element has a specific number of atoms present. This compound has three elements that are aluminum, sulfur, and oxygen and the atoms are present are:

Al = 2 atoms represented by subscript

S = 3 atoms represented as whole subscripts of sulfite

O = 9 atoms 3 inside bracket and 3 outside of bracket that multiplies.

Thus, total number of atoms are 2+3+9 = 14

Answer:

B. Lava flows may cause tsunamis.

Answer:

The gram formula mass is the sum of the gram atomic masses of the atoms that make up a chemical formula. For lithium fluoride this works out to be 7g + 19g = 26g. Hence the mass of 1 mole of LiF is 26g; and the mass of 1.5 moles of LiF must be 1.5 × 26g = 39g.

Answer:

To determine how many total electrons there are, add the amount of charge to the atomic number. In this case, there are fewer protons than electrons. For example, N 3- has a -3 charge which means it has 3 more electrons than a neutral nitrogen atom. Nitrogen’s atomic number is 7, therefore this ion has 10 electrons.

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Explanation:

Answer:

A. a mixture

Explanation:

hope this helps

Answer:

I think its C but if its not try A then

Explanation:

Answer:

As the garter snake can be found almost in any kind of habitat, what makes them be able to survive in any environment include:

1. They hibernate to increase their chances of survival in unfavorable weather conditions.

2. They can blend with the background of any environment especially grass to escape being eaten.

3. They produce an odor that is usually unpleasant especially when about to be attacked.

Explanation:

The garter snakes are distinguished by the three stripes running the length of their body and can often be found in forests, places that are even close to water bodies, and almost any place, even in holes.

Answer:

Because it'll live in the desert!

Explanation:

It probably won't survive on time!

Answer:

not bang your head

Explanation:

Answer:

focus on your surroundings

N + H2 → NH3

balance the equation

2N + 3H2 → 2NH3

3H2 → 2NH3

3 : 2

3.91 ÷ 3 = 1.303 mol

1.3 × 2 = 2.606 mol

Answer:When a strontium atom loses two electrons, it becomes a(n) cation with a charge of 2+. when any neutral atom loses an electron it becomes cation that is positively charged ions and an ion gets the charge according to the number of electrons loses.

you are very welcome but I may be inaccurate.

Answer:

circuit

electric current

voltage difference

ohms law

resistance ​

Explanation:

Circuit - a roughly circular line, route, or movement that starts and finishes at the same place.

Electric current - A net unidirectional movement of electrons, or other charge carriers, caused by a potential difference

Voltage difference - A potential difference of one Volt is equal to one Joule of energy being used by one Coulomb of charge when it flows between two points in a circuit.

Ohms law -a law stating that electric current is proportional to voltage and inversely proportional to resistance.

Resistance - The refusal to accept or comply with something; the attempt to prevent something by action or argument.

Answer:

a.) 96000 g

b.) 0.00015 kL

c.) 18.8 L

d.) 36 KM

e.) -39.15 C

f.) 109.4 F

Explanation:

To turn kg to g, multiply the value by 1000

To Turn CL to KL, divide the volume value by 10000

To turn dl to l, divide volume by 10

to turn m to km, multiply meter value by 0.001 or divide by 1000

To convert c to f, multiply the temperature in degrees Celsius by 2, and then add 30

i hope this helps : )

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Answer:

2a. If the temperature is increased, the reaction will shift to the right in an attempt to release some of the heat. As the forward reaction loses heat while the reverse would create more heat.

2b. If the pressure is increased, it would shift to the left to counteract the increase in pressure as the left side will have fewer molecules.

2c. If Cl2 is added the reaction will shift to the left in order to remove the stress of the extra Cl2 and favor the production of more reactant.

2d. If PCl3 is removed, the reaction will shift to the right. When part of the equation is removed the reaction learns to adapt to the loss by trying to make more Pcl3 and counteract the effects of losing the PCl3.

3a. The reaction will shift to the right to produce more heat and counter the negative effects of losing the heat.

3b. It will shift to the left to get rid of the excess HCl being produced and form more reactant from the breakdown of the HCl.

3c. It would shift to the right in order to get rid of the excess form products from it.

3d. If pressure is decreased there will be no effect on the shift of the reaction because there is an even amount of moles of gas on each side.

4a. K=[N2O4(g0] / [NO2(g)]2

4b. (Below)

K=[N2O4(g)] / [NO2(g)]2

0.4 / 0.5(2)

0.4/0.25 = 1.6

Keq= 1.6