someone help me on this one pls

Answer:

Molar mass = 216.8254 (approx.)

Explanation:

Given:

FeCl2 • 5H20

Find:

Molar mass

Computation:

Atomic mass

Fe = 55.845

Cl = 35.453

H = 1.00794

So,

FeCl2 • 5H20

55.845 + 2(35.453) + (2)5(1.00794) + 5(15.999)

55.845 + 70.906 + 10.0794 + 79.995

Molar mass = 216.8254 (approx.)

Answer:

6E26

Explanation:

Answer:

Number of silver atoms

=

0.0134

⋅

m

o

l

×

N

A

.  

N

A

=

Avogadro's number

Explanation:

Silver has a molar mass of  

107.87

g

⋅

m

o

l

−

1

.

What does this mean? It means that if I have such a mass of silver, there are Avogadro's number,  

N

A

=

6.022

×

10

23

,  

individual silver atoms.

So all I have to do is divide the mass by the molar mass, and multiply this number (a molar quantity!) by Avogadro's number.  

So, moles of silver  

=

1.45

⋅

g

107.87

⋅

g

⋅

m

o

l

−

1

=

0.0134

⋅

m

o

l

And  

number of silver atoms

=

0.0134

⋅

m

o

l

×

6.022

×

10

23

⋅

silver atoms  

m

o

l

−

1

=

?

?

silver atoms

Explanation:

Answer:

it will option B ,hope it helps

Answer:

0.0997 mol K

Explanation:

First of all, the picture and your question do NOT match so I will solve for what you are asking for.

3.9g x 1 mol/39.10 g = 0.0997 mol K

The 39.10 grams is the atomic mass of potassium

Answer:

B)

Explanation:

This should be the correct answer, lmk if it's not

As in the given image, the weather pattern known as Arizona monsoon is caused by the winds at this latitude tend to blow from west to east. Thus, option C is correct.

The Arizona Monsoon is a well-defined meteorological phenomenon that affects the southwest region of North America during the summer. It is scientifically referred to as a meteorological "singularity."

Arizona experiences its strongest wind flow during the winter months from the west or northwest, coming from California and Nevada. The winds change to a southerly or southeasterly direction as the summer months approach.

From the Pacific Ocean and the Gulf of Mexico, moisture moves northward. Statewide moisture conditions are drastically altered as a result of this alteration.

To refer more on Arizona monsoon, search here:

https://brainly.com/question/19580372

#SPJ5

Answer:

The answer is 101.1032

Explanation:

Answer:

The speed will be 42 m/s

Explanation:

Wavelength is the minimum distance between two points on the wave that are in the same state of vibration. In other words, in a periodic wave the wavelength is the physical distance between two points from which the wave repeats.

Frequency (f) is the measure of the number of cycles or repetitions of the wave per unit of time. That is, it is the number of vibrations that occur in a unit of time. That is, how many peaks or valleys are repeated in a unit of time. If the unit of time is one second then the frequency is measured in Hertz (Hz).

The wavelength (λ) and the frequency (f) are two inversely proportional parameters and related by the propagation speed. The speed of propagation is the speed with which the wave travels, it is represented by the letter "v". The equation that links these three parameters is v = f * λ.

In this case:

Replacing:

v= 14 Hz* 3 m

Solving:

v= 42 m/s

The speed will be 42 m/s

Answer:

salad is a mixture this is the answer of the question

please mark ne has a brainliest

Answer:

Neon is a gas and silicon is a solid i solved this for my chemistry teacher dr Thomas project this week

Explanation:

gasses are naturally less stable then non metalloids

Answer:

lost is the answer to this question but if I am wrong I am so sorry for that

Answer:

22.22 g

Explanation:

The balanced reaction equation is;

Ca(s) + 2HCl(aq) → CaCl2(aq) + H2(g)

Number of moles of calcium reacted = 8.02g/40.1g/mol = 0.2 moles of Calcium

From the reaction equation;

1 mole of Ca yields 1 mole of CaCl2

Hence 0.2 moles of Ca also yields 0.2 moles of CaCl2

Mass of calcium chloride produced = number of moles * molar mass

Mass of calcium chloride = 0.2 moles of CaCl2 * 111.1g/mol = 22.22 g

Metals have a crystalline in nature, and a consistent shift in stress causes the structure to alter, causing the metal to stiffen and fracture. This is known as metal fatige. The bending causes that to occur.

A metal is a substance that has a shiny look when freshly processed, polished, or shattered, and conducts electricity and heat rather effectively. Generally speaking, metals are malleable and ductile.

These characteristics are the outcome of the metallic link that exists between the metal's atoms or molecules.

The earth's crust is where most pure metals are found. They are discovered in ores, which are solid materials from which metals and minerals may be extracted. The majority of the planet's iron mass, which makes up over a third of its mass, is located in its core.

Thus, Metals have a crystalline in nature, and a consistent shift in stress causes the structure to alter.

To learn more about metal, follow the link;

https://brainly.com/question/18153051

#SPJ2

Answer:

Temperature is the average kinetic energy of the molecules. Absolute zero is the temperature where molecular motion stops and is the lowest possible temperature. ... The relationship between Celsius and Kelvin temperature scales is given by K = °C + 273.15.5

so the answer is B

MARK ME A BRAINLIEST

Answer:

Molar mass of C3H8 = C 3 (12.01 g/mol) = 36.03 (g/mol)

H 8 (1.008 g/mol) = 8.064 (g/mol)

44.09 (g/mol)

74.6 g propane x 1 mole propane x 6.022 x 10

23

molecules

44.09 g propane 1 mole propane

= 1.02 x 10

24 molecules propane

Explanation:

Answer:

true false true false true fake

Answer:

38. False

39. True

40. True

41.  True

42. False

43. False

44. True

45. True

Explanation:

Note these are just my guesses they might not all be correct but I will do my best.

Hope this helps you at all! Feel free to correct me if I got any of them wrong :)

Answer:

Option B because aluminum has valence 3±

Answer:

2,200 mL I believe it is.

Answer:

2,200 is the answer of your question

Answer:

most elements are metals

Answer:

seasons experienced by the northern and southern hemisphere always differ by six months  when it is summer in the northern hemisphere, it is winter in the southern hemisphere

Explanation:

Answer:

ohhhhhhh she -he was having a point

Answer:

no lo sé bb 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100

Answer:

19.32 = moles of carbon

57.54 = moles of hydrogen

9.69 = moles of oxygen

Explanation:

232 g carbon × 1 mol C / 12.011 g C= 19.32 mol C

58 g hydrogen × 1 mol H / 1.008 g H = 57.54 mol H

155 g oxygen × 1 mol O / 15.999 g O = 9.69 mol O

Answer:

D

Explanation:

In the grassland pretty warm so the heavy fur coat wouldn't help, there is no snow in the grassland so the big feet for walking on snow also wouldn't help, its the grassland where trees are more scarce so not A, but there is a lot of grass and dust so being able to blend in would help.

Answer:

D

Explanation:

AN animal this color can camouflage and it can help them so they will not be eaten by there predators