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Answer:

to increase their number of species on the Earth and want to go long and long

Answer:

the 3rd one

Explanation:

Na = 2 atoms

Cl = 2atoms

F = 2 atoms

Given

Skeleton equation(unbalanced equation) :

NaCl+F2⇒NaF+Cl2

Required

The number of atoms

Solution

We balance the reactions to find the reaction coefficient, which is then used to calculate the number of atoms in the reactants and products

Balanced equation

2NaCl + F2 → 2NaF + Cl2

A balanced reaction will show that the number of atoms in the reactants and products is the same

Na = 2 atoms

Cl = 2atoms

F = 2 atoms

Na = 2 atoms

F = 2 atoms

Cl = 2 atoms

Answer:

100 kg

Explanation:

you cannot destory mass so, it's going to be the same just broken up pieces

Answer:

A. wearing sunglasses to to protect eyes from UV rays

Explanation:

Your eyes are outside of your body, meaning external. All the other choices deal with internal organs.

Answer: Biodiversity is important to humans for many reasons. ... Ecological life support— biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services.

Explanation:

Answer:

what is the displacement

Explanation:

Answer:

D. 7

Explanation:

i did it

Answer:

true <3

Explanation:

Answer:

97.5%

Explanation:

the US mint specifies pennies as 2.5% copper in 97.5% zinc

Answer:

C

Explanation:

increase potential energy ( in motion)

Answer:

1.13moles

Explanation:

Given parameters:

Number of atoms  = 6.777 x 10²³ atoms

Unknown:

Number of moles  = ?

Solution:

A mole of a substance contains the avogadro's number of particles

       6.02  x  10²³ particles   = 1 mole

      6.777 x 10²³ atoms will contain [tex]\frac{ 6.777 x 10^{23} }{6.02 x 10^{23} }[/tex]   = 1.13moles

Answer:

Multicellular organisms have cells that are organized in specific ways to perform specialized functions. From the most complex level to the simplest level, the five levels of organization for the sheep should be ordered as:

whole organism → organ system → organ → tissue→ cell

Explanation:

Answer:

Natural Resource

Explanation:

A natrual resource is something that was created when Earth was first made. They were intended to fulfill human needs when they needed them. An example of a natural resource can be water, because we will need water to survive.

There are 10.97 moles of NaCl in 2.35 liters of a 4.67 M solution.

no. of moles = volume × molarity

no of moles = 2.35L × 4.67M

no of moles = 10.97mol

Therefore, there are 10.97 moles of NaCl in 2.35 liters of a 4.67 M solution.

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Answer:

66 km.

Explanation:

88 km / 1 hour = 66 km / 0.75 hours.

You need to just multiply 0.75 by 88.

The answer is 66 km.

A raised weight.

Water that is behind a dam.

Have a nice day!

Answer:

When something has a high position, its gravitational potential energy is high. For example, a book on a high bookshelf has higher potential energy than a book on the bottom shelf because it has farther to fall. ... A book on a table before it falls. A child at the top of a slide.

Explanation:

U=m g h

Answer:

The principle of superposition states that the oldest sedimentary rock units are at the bottom, and the youngest are at the top. Based on this, layer C is oldest, followed by B and A. hope that helps

Explanation:

A=top

B=middle

C=bottom

The amount of molecules= 3.01 x 10²⁴

Given

5 moles of N2

Required

The number of molecules

Solution

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

For 5 moles :

= 5 x 6.02 x 10²³

= 3.01 x 10²⁴

Answer:

199.26 or with sig figs 2.0 x 10^2

Explanation: you take the # of molecules and divide it by avagadros number which is 6.022141 x 10^23

Answer:

jayfeather friend me    ccccccc

Explanation:

is: cellular respiration creates an energy molecule when glucose is broken down.

Conservation of mass (mass is never lost or gained in chemical reactions), during chemical reaction no particles are created or destroyed, the atoms are simply rearranged from the reactants to the products.

Explanation:

density, albedo, light e-folding depth, specific surface area (SSA), crystal size and shape, thermal conductivity, permeability, diffusivity,

The number of moles of Nitrogen : == 7.975

Given

9.60x10²⁴ molecules  of nitrogen dioxide (NO2)

Required

The number of moles

Solution

Reaction

N2 + 2O2 → 2NO2

moles of NO2 :

= 9.6 x 10²⁴ : 6.02 x 10²³

= 15.95

From the equation, mol N2 :

= 1/2 x mol NO2

= 1/2 x 15.95

= 7.975

The number of molecules :

= 8 x 6.02 x 10²³

= 4.816 x 10²⁴

Opinion and  and factless ideas  are not science and engineering practice as these are based on observations.

Observations are defined as a set of statements or facts which are recorded while conducting an experiment.Observations are made through sensing changes in the variables of the experiment.

It is specifically defined as an act of knowing or recording the changes in the variables of the experiment.Recording observations holds importance as recording observations avoid the experiment to be repeated over and over again.

It is important to note down observations so that the testing of hypothesis is made easier.There are four types of observations .Observations need to be descriptive and must be written in complete sentences and should include all the numerical data of the experiment.

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