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How many oxygen atoms are in 6 Carbon dioxide compounds (6co2)
Number 5
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Answer:

5000mm

Explanation:

10mm makes 1 cm

so if we compare them:

10mm-->1cm

x -->500cm

now cross multiply:

1x-->5000

divide both sides by 1 for x to be alone

therefore we get x=5000

Answer:

about 5 years i think

Explanation:

I've tried all the methods i know

it's about 5 years

hope it helps

The age of the artifact is equal to 2.5 × 10³ years when the half-life of carbon- 14 is 5.73 × 10³ years.

The half-life of a radioactive element is defined as the time that is required to decrease the original quantity of a radioactive isotope to half after decay.

The half-life of a radioactive isotope is the feature of the element and does not depend upon the actual amount of the radioactive isotope.

Given, the ratio of the initial and left amount of  ¹⁴C is :

N = 0.745 N₀

The half-life period of the ¹⁴C isotope = 5.73 × 10³ years

The rate constant of the decay of radioisotope can be calculated from the below-mentioned formula:

[tex]\displaystyle k=\frac{0.693}{t_{1/2}}[/tex]

[tex]\displaystyle k=\frac{0.693}{5.73 \times 10^3}[/tex]

k = 0.123 × 10⁻³ yr⁻¹

The age of the artifact can be calculated as:
[tex]\displaystyle t =\frac{2.303}{k} log\frac{N_0}{N}[/tex]

[tex]\displaystyle t =\frac{2.303}{0.123\times 10^{-3}} log\frac{N_0}{0.735 N_0}[/tex]

t = 2.5 × 10³ years

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Answer:

D. Communication of results

Answer:

b.

conclusion

because it gives the overall information about the experiment

Since we are starting from the number of atoms of Nickel, we need to know two sets of formulas:

mass = moles × molar mass

moles = atoms ÷ Avogadro's Number

⇒ mass = (atoms ÷ Avogadro's Number) ×  molar mass

   mass = [(7.4 × 10¹⁵ atoms) ÷ (6.022 × 10²³ atoms/mole)] × (58.69 g/mol)

             = 7.21 × 10⁻⁷ g

Explanation:

beryllium must loss 2 electrons to form a stable octet to its nearest noble gas Helium.

It can loss electron because it is a metal and is placed in 2group and 2 period in group of alkaline earth metals.

hope this helps you to.

Answer:

An equal force acts in the opposite direction.

Explanation:

A. putting a piece of soft iron in an outlet

Answer:

Strontium

Explanation:

strontium will be less reactive because reactivity decreases down the group

Answer:

Selenium

adadadadad

Explanation:

if u ask which group

so it is halogen

or u ask which type of matter

then liquid

Melting points of enantiomers will not compare to each other as they have same M.P. and Diastereoisomers are compared on the basis of melting point.

Stereoisomers are those isomers which are having the same molecular formula but different spatial arrangemet of atoms within the molecule.

Hence, only diastereoisomers are compared on the basis of melting point.

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Answer:

Its C

Explanation:

The law of conservation of mass says no atoms can be created or destroyed just rearranged so the mass at the beginning before the reaction would stay the same after it

Considering the Law of Conservation of Matter, the correct answer is the third option: the total mass of the products will be the same and has a value of 58.44 amu.

The Law of Conservation of Matter is also called the law of conservation of mass or the Law of Lomonósov-Lavoisier. This law postulates that "the mass is not created or destroyed, only transformed."

This means that the reagents interact with each other and form new products with physical and chemical properties different from those of the reagents because the atoms of the substances are ordered differently. But the amount of matter or mass before and after a transformation (chemical reaction) is always the same, that is, the quantities of the masses involved in a given reaction must be constant at all times, not changing in their proportions when the reaction ends.

In other words, then the mass before the chemical reaction is equal to the mass after the reaction.

So, in this case, if the total mass of the reactants is 58.44 amu, the total mass of the products will be the same and has a value of 58.44 amu.

Finally, the correct answer is the third option: the total mass of the products will be the same and has a value of 58.44 amu.

Learn more:

Answer: Water

Explanation: During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil

Answer:

,

Explanation:

Answer:

An atom is the smallest partical in the universe that makes up everything you see around you. Every chemical element is also made up of atoms. Since atoms are what give each element their defining characteristics, each element can be composed of multiple atoms but you must have all of the same type of atoms combined in order for it to be considered an element. For example the element gold can only contain gold atoms. If you mix the atoms of one element with the atoms of another your substance has then been changed from an element to a compound.

Explanation:

Answer:

The answer is B. False

Explanation:

Answer:

Metallic character increases down each Group of the Table as the outer electrons are further from the nucleus and require less energy for their removal. (a) metallic character decreases from left to right in each Period.

Explanation:

The metallic character increases down each Group on the periodic table.

The metallic character decreases from left to right in each Period.

learn about metallic character,

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Answer:

distance decreases and force increases

Explanation:

When we use a simple machine to do work, the distance decreases, the force increases. Hence, option D is correct. Because, these parameters are in inverse proportion.

Force is an external agent acting on a body to change its motion. There are various kinds of force such as frictional force, magnetic force, gravitational force etc.

Work done is the effectiveness of the machine to use the force to make the maximum displacement. Work done is the product of force and distance.

W = F.ds

As per this relation, the force acting on large distance makes greater work done. However,

F = W/ds.

Hence, as the distance increases, the force is decreasing. Therefore, option D is correct.

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Answer:

Transition Metal

Explanation:

Hey there is a really easy tool called PTable that is an interactive periodic table that does all kind of things. needed in Chem

The relationship between an hydrogen atom's energy levels, sublevels and atomic orbitals lies in the fact that hydrogen atom has a shell with energy level of 1 and the energy sublevels are similar as there's only one and have the same energy, and lastly, only one atomic orbital exists in a hydrogen atom

Ultimately, the hydrogen atom has only one electron In the energy level 1, sublevels with equal energy as there are no sublevels in the energy level 1 and only the 1s atomic orbital.

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Answer:

158 grams

Explanation:

Answer:

It allows the traveler to justify questionable expense items.

hope that helped <3

Answer:

1223.08632 I think....

Answer:

53

Explanation:

it is easy divide 100 by 200 and get 100

Answer:

false

Explanation:

they dont spontaneoulsy form water

Answer:

A mineral has to be naturally occurring, inorganic, solid, have a crystal structure, and have a definite chemical composition.

Explanation:

Answer:

to the right of the steps

Explanation:

the metals stop at the stair step

Answer:

In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest.

In classical mechanics, the kinetic energy of a non-rotating object of mass m traveling at a speed v is 1/2*mv^2. In relativistic mechanics, this is a good approximation only when v is much less than the speed of light.

The standard unit of kinetic energy is the joule, while the English unit of kinetic energy is the foot-pound.

Explanation:

Don't directly copy and paste this because you will get flagged for plagiarism. Just type this out in your own words and change a few of the words to their synonyms.

the only report that will fool the teachers

Answer:

They are constitutional isomers and diastereomers.

Answer:

31: 1366.82

32: 6.45062

33: 12.50400

34: 210.42700

35: 63.88200 cm

36: -970.8772

Explanation:

4.550 x 300.4 = 1366.82

2.45002 + 4.0006 = 6.45062

26.004 - 13.5 = 12.50400

2.667 + (5.6 x 37.1) = 210.42700

2.34 x 4.55 x 6.0 = 63.88200

4.60 x 5.16 x 1.05 + 6.2 - 1002 = -970.8772

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