How many moles (of molecules or formula units)
are in each sample?
75.83 g CF2Cl2

he required empirical formula based on the data provided is Na2CO3.H2O.

The term empirical formula refers to the formula of a compound which shows the ratio of each specie present.

We have the following;

Mass of sodium = 37.07-g

Mass of carbonate = 48.39 g

Mass of water = 14.54-g

Number of moles of sodium = 37.07-g/23 g/mol = 2 moles

Number of moles of carbonate = 48.39 g/61 g/mol = 1 mole

Number of moles of water = 14.54/18 g/mol = 1 mole

The mole ratio is 2 : 1: 1

Hence, the required empirical formula is Na2CO3.H2O

Learn more about empirical formula : https://brainly.com/question/11588623

Answer:

mole = reactingmass = 7.890= 0.142 mol

molarmass 55.8

atoms = mol × alvagadro constant

0.142 × 6.02 × 10^23

=8.5484 × 10^22 Atoms

Answer:

by using this formula you will get it

Explanation:

number of mole = number of particles÷ Avogadro's number

n=3.51×10^23÷ 6.02×10^23

n = 0.58 moles

Answer:

Solubility, length, hardness, color, mass, density, weight, volume, boiling, and point.

Explanation: Hope this helps

Answer:

millions

Explanation:

the 1 is seven decimbal places to the left (seven places left of zero), which is the millions place

Answer:

C polyatomic ions are made up of more than one atoms. The correct options are,

Explanation:

Polyatomic ions have many charges.  

Polyatomic ions attract other ions to form ionic bonds.  

Polyatomic ions are made up of two or more types of atoms.

Polyatomic ion:

They are also known as a molecular ion, It is an ion composed of two or more covalently bonded atoms.

They have extra or lesser electrons than they need.

They are charged hence they attract opposite one.

For example-

Therefore, C polyatomic ions are made up of more than one atoms.

Answer:

C.

Explanation:

This would be correct because polyatomic ions exist in a group of more than one atom.

Answer:

5

35 divided by 7 = 5

Explanation:

Hope this helps!!

Liyah

Gay Lussac's Law

[tex]\tt \dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}[/tex]

Convert:

200°C = 200 + 273 = 473 K

50°C = 50 + 273 = 323 K

Input the value:

[tex]\tt \dfrac{6}{473}=\dfrac{P_2}{323}\\\\P_2=4.097~atm[/tex]

Answer:

[tex]0.4 \: [/tex]

Explanation:

I only know this answer hope it will help you if it's wrong I am sorry:(

[tex]kai6417[/tex]

Answer:

29.5 days

Explanation:

How often does a full Moon occur? A full Moon happens roughly every 29.5 days. This is the length of time it takes for the Moon to go through one whole lunar phase cycle.

Answer:

i think maybe 94.99201599999999

Explanation:

Answer:

How many moles KCl in 1 grams? The answer is 0.013413582325

1 mole is equal to 1 moles KCl, or 74.5513 grams.

447.3078 is the answer

Explanation:

~Cornasha_Weeb

Lin never forgot how it felt to be left out

Answer:

to be left out

Explanation:

Lin never forgot how it felt to be left out.

In the paragraph given, we see Lin being left out of a play. She wanted to be Dorthy but was told she couldn't. This led to feelings of being left out.

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.

- Heather

Answer:

1.83 moles

Explanation:

1.83 moles

Answer: the mass of 3.01 atoms of chlorine is 35.46/2 = 17.73 g.

Explanation: hope its correct

step by step: molar mass: (2 x 35.46) g/mol = 70.92 g/mol

1 mole chlorine = 6.02 x 10^23 molecules of chlorine.

Mass of 6.02 x 10^23 molecules chlorine = 70.92 g

Mass of 3.01 x 10^23 molecules chlorine = 70.92 x(3.01 x 10^23)/(6.02 x 10^23)g

= 35.46 g

Answer:

648

Explanation:

what you're going to do your first is to convert the 192g to number of atoms

firstly you are going to convert 192 to moles using the formula reacting mass all over molar mass, into it that you're going to get 12 as your answer, you Dey multiply the 12 to avocados constant

in doing that you have I've gotten the number of atoms present in 192 g of oxygen

Answer:

53.545803079954496

Explanation:

Brainliest pls

Answer:

B

Explanation:

neutrons + atomic number/proton/electron for a neutral atom = mass number

e.g

mass number of Chlorine 35.5

proton number 17

neutron number will be 35.5-17 = 18.5

Therefore.....

your question deduced says

atomic number is 5

mass number is 11

neutron number is however mass number minus atomic number 11-5 =6

Answer:

6 neutrons and 6 electrons

Explanation:

I got it right ;) good luck

As per questions,

• Myth: A dead organism is the same as a non-living thing in science.

Fact: A dead organism is not the same as a non-living thing in science.

Evidence: A dead organism means that it was once alive, whereas a non-living thing has never been alive.

• Myth: The Linnaeus system of classification will always stay the same.

Fact: The Linnaeus system of classification will pass on .

Evidence: Its new species are being found. Also, Carl Linnaeus came up with a sequential classification of living organism under different taxons namely Kingdom, phylum, class, order, family, genus and species.

• Myth: Tigers and goldfish are not related.

Fact: Tigers and goldfish are related

Evidence: They fall into the same category of vertebrates, which means that both creatures have spines, and internal bone structure.

• Myth: An organism's kingdom only describes physical characteristics.

Fact: An organism's kingdom not only describes physical characteristics.

Evidence: This is evident by that both plant and animal kingdom are classified on the basis of photosynthetic ability. Besides physical characteristics, it also describes its mode of nutrition and food characteristics.

• Myth: Mammals and plants don't belong in the same domain.

Fact: Mammals and plants belong in the same domain.

Evidence: Plants have cells, nucleus, breathing and respiratory capabilities just like mammals.

---------------------★------------------

Your myth: Animals are not related to humans.

Fact: Animals are indirectly related to humans.

Evidence: Humans possessess some unique features found in other species, hence, we are related to apes. At the known time, chimpanzees is our closest relative, and we share up to 98% of the DNA sequence with them.

Answer:

1. The purpose of an experiment is to test out your hypothesis. If your hypothesis is correct, then it is a theory that could work every single time the experiment has been performed by scientists.

2. Limiting factors include a low food supply and lack of space. Competition for resources like food and space cause the growth rate to stop increasing, so the population levels off. The carrying capacity (K) is the maximum population size that can be supported in a particular area without destroying the habitat.

3. An example of a hypothesis based on observation and scientific principles is:

Deaf children whose parents are deaf will acquire language faster than deaf children whose parents are not deaf.

A hypothesis is an informed prediction or a tentative statement about what you think that would occur in a scientific experiment as a result of experience from observations accepted by scientific rules and law.

A hypothesis is a testable statement obtained from the research question but questions cannot be tested directly, it is the proposed relationship between the variables that are tested.

An example of a hypothesis is:

Deaf children whose parents are deaf will acquire language faster than deaf children whose parents are not deaf.

This specifies the direction of the hypothesis because one group is faster than the other.

4. In any ecosystem, organisms and populations with similar requirements for food, water, oxygen or other resources may compete with each other for limited resources, access to which consequently constrains their growth and reproduction. Growth of organisms and population increased are limited by access to resources.

The purpose of an experiment is to test out your hypothesis. If your hypothesis is correct, then it is a theory that could work every single time the experiment has been performed by scientists.Other part of the question is discussed below:

Limiting factors include a low food supply and lack of space. Competition for resources like food and space cause the growth rate to stop increasing, so the population levels off. The carrying capacity (K) is the maximum population size that can be supported in a particular area without destroying the habitat.

An example of a hypothesis based on observation and scientific principles is that a Deaf children whose parents are deaf will acquire language faster than deaf children whose parents are not deaf.

A hypothesis is an informed prediction or a tentative statement about what you think that would occur in a scientific experiment as a result of experience from observations accepted by scientific rules and law.

Therefore, The purpose of an experiment is to test out your hypothesis. If your hypothesis is correct, then it is a theory that could work every single time the experiment has been performed by scientists.

Learn more about experiment on:

https://brainly.com/question/30055326

#SPJ2

Answer:

substance is related to the average kinetic energy of the particles of that substance

Explanation:

Answer:

As stated in the kinetic-molecular theory, the temperature of a substance is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles.

Explanation:

hope it will help you have a great day bye and Mark brainlist if the answer is correct

[tex]kai6417[/tex]

#carry on learning

ΔH₁ = ΔH₂ - ΔH₃

ΔH₁ = -635.1-(178.3) KJ

ΔH₁ = -813.4 KJ

Answer:

Is the new volume, 10.80L?

Explanation:

But if wrong just ignore honestly.

Answer:

Explanation:

Determining the Limiting Reagent

One reactant (A) is chosen, and the balanced chemical equation is used to determine the amount of the other reactant (B) necessary to react with A. If the amount of B actually present exceeds the amount required, then B is in excess, and A is the limiting reagent.

Answer:

Explanation:uum i cant see anything but yeah I think its c