Calculate the mass, in grams, of 2.95 mol of argon, Ar.
mass of Ar:
Calculate the mass, in grams, of 0.627 mol of nitrogen dioxide, NOZ.
mass of NO2:

Answer:

Ammonia (NH3) is composed of Nitrogen and 3 Hydrogens

Explanation:

Answer:

Answer in picture

Explanation:

Answer:

5.6 x 10²⁴ molecules H₂O

Explanation:

9.3 moles * (6.02214076 x 10²³) = 5.6 x 10²⁴

The Avogadro constant = 6.02214076 x 10²³

This constant is the number of particles (such as atoms, ions, or molecules) in one mole of something.

Answer:

False

Explanation:

It occurs when two waves meet while traveling along the same medium.

Answer: gravity affect the amount of both kinetic and potential energy

Explanation:

The concentration of S2−in equilibrium with MnS(s) (sp=4. 6×10−14) and 0.083M Mn2+ is mathematically given as

[s^2-]=61.333*10^{-14}M

Generally, the equation for the solubility constant  is mathematically given as

Ksp=[Mn^2+][s^2-]

Therefore

4.6*10^{-14}=0.075*[s^2-]

[s^2-]=4500/0.075*10{-14}

[s^2-]=61.333*10^{-14}M

In conclusion, The concentration of S2−

[s^2-]=61.333*10^{-14}M

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Answer:

It had changed by .001 liters because of the way that cold air can't evaporate more than .5 liters of air

Explanation:

Answer:

divide the volume value by 1000

So 3828/1000=3.828

Answer:

The answer is C. Inversely, when this atom gains a positively charged ion. (The atom) becomes a negatively charged atom or an "anion".

Explanation:

Since electrons are negatively charged, an atom that loses one or more electrons will become positively charged, an atom that gains one or more electrons becomes negatively charged. The oppositely charged ions attract each other to form ionic networks (or lattices)

Answer:

opposite charges attract

Explanation: Ionic bonding is the attraction between positive and negative charge ions electrostatics explains why this happens: opposite charges attract and like charges repel. when many ions attract each other, they form large, ordered, crystal lattices in which each ion is surrounded by ions of the opposite charge. Happy to help my friend

Answer:

protons

Explanation:

have a positive charge

Answer:

Protons!

Explanation:

Protons are positve! Protons start with P, and Positive starts with P. This is a very handy trick!

Answer:

I'm pretty sure it all of the above

sorry if I'm wrong

Explanation:

Answer:

D

Explanation:

A: not true. You could have cement floors and still receive radio/TV

B: not true. Very little of the waves are absorbed by the walls.

C: not true. You can receive radio/TV if there isn't a carpet in the entire house.

D: Dis the answer. Walls don't absorb the incoming waves or not much of them

Answer:

electrons

Explanation:

A redox reaction is one in which oxidation and reduction takes place. in the sense of

oxidation being the loss of electrons and reduction the gain of electrons.

Answer:

the position of hydrogen is controversial in periodic table because hydrogen is the only element with out neutron. it belongs to 1 st group but it is not placed there .Feb 8, 2018

Explanation:

pls give brainliest and heart much appreciated

Answer:

see answer below

Explanation:

LOL idk what this question is about but to my understanding, having a detailed procedure gives u more clue on what u r doing and how u r doing it. think of this like a instruction manual, if u want to build a telescope and have no idea how to build it and the instrutions only give u short sentences like"screw nails next to the finger scope" or something like that wouldnt help much. i dont know about u but i rather prefer instructions written like this"first screw the nail beside the finger scope, DO NOT unscrew the botton" and continue. i cant build a telescope so yea dont know any directions to that.

Answer:

A. The moon

Explanation:

This is because the sun gives the moon the light the moon doesn't make it.

Answer:

When it is cold, it's hard for the molecules and whatever microscopic organisms live there to move around.

When it is hot, the molecules will move quicker due to a chemical reaction with the atoms and other forms of energy increasing with the heat energy. This reaction happens because 2 forms of energy meet.

I hope this helps!

As the mass of an object increases, its acceleration decreases. Acceleration is inversely proportional to mass.

Answer:  see below

Explanation:

Zeros between the digit and decimal point are NOT significant.

Zeros between digits ARE significant.

a. 230 mL.              sf: 23

b. 0.00540 s          sf: 540

c. 1440                    sf: 144

d. 50 ℃                  sf: 5

e. 0.9405 g/cm3    sf: 9405

f. 700 jellybeans    sf: 7

g. 1.05 x 10⁶            sf: 105

For 12.09 kcal of energy, added to 45 grams of water at an initial temperature of 23.4°C, the final temperature of the water is mathematically given as

T2=290C

Generally, the equation for the Energy  is mathematically given as

Q=mcdT

Therefore

Q=mcdT

12.09=45*(23.4-T2)

T2=290C

In conclusion,  the final temperature is

T2=290C

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Answer: Carbon,Hydrogen, Chlorine

Explanation:

C=Carbon

H=Hydrogen

Cl=Chlorine

Hope this helps :)

Answer:

0.0499 moles

Explanation:

56.08g => 1 mol

2.80g => y mol

Y = 2.80/56.08 = 0.0499 moles

A sample of calcium oxide (CaO) has a mass of 2.80 g. the molar mass of CaO is 56.08 g/mol. No. of moles of CaO this sample contain are 0.499.

Avogadro's number is the number of units in one mole of any substance and equals to 6.02214076 × 10²³. The units can be electrons, atoms, ions, or molecules.

No. of moles is defined as a particular no. of particles that we can calculate with the help of Avogadro’s number.

Mass of a particular product is also find out by stoichiometry of a reaction as per the no. of mole given in the reaction.

No. of moles = Mass of compound ÷ Molar mass of compound

No. of moles = 2.80 ÷ 56.08 = 0.0499

Therefore, A sample of calcium oxide (CaO) has a mass of 2.80 g. the molar mass of CaO is 56.08 g/mol. No. of moles of CaO this sample contain are 0.499.

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Answer:

isn't diamond made from black coal? haha... just kidding. se the answer below

Explanation:

Diamond is a rare, naturally occurring mineral composed of carbon. Each carbon atom in a diamond is surrounded by four other carbon atoms and connected to them by strong covalent bonds - the strongest type of chemical bond.Diamond is the hardest known natural substance.

I hope I helped.

Answer:

pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.

If a mixture is prepared by mixing 29.27 mL of the blue dye solution with 35.00 mL of the red dye solution and 14.73 mL of the yellow dye solution, the molar concentration of the blue dye in the mixture is

MB'=0.1189M

Generally, the equation for the moles  is mathematically given as

Moles=Molarity *volume

Therefore

For Blue dye

MB=0.3523*25.27*1/1000ml

MB=8.90*10^{-3}

For red dye

MR=0.1017*35.27*1/1000ml

MR=3.55*10^{-3}

For yellow dye

MY=0.3523*14.73*1/1000ml

MY=2.27*10^{-3}

Where

Total volume is

T=25.27+35.ml+14.73

T=75ml

In conclusion, The molar conc of blue dye is

[tex]MB'=\frac{8.90*10^{-3}*1000}{75}[/tex]

MB'=0.1189M

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Answer:

The greater Earth's axial tilt angle, the more extreme our seasons are, as each hemisphere receives more solar radiation during its summer

Explanation:

Answer:

100 grams

Explanation: