All categories

2 years ago

The molecular mass of a substance refers to the:

Chemistry

1 answer:

ololo11 [35]2 years ago

3 0

Answer:

Explanation:

it's the sum of the masses of all the atoms in the molecule

please like and Mark as brainliest

You might be interested in

What is the difference between a conductor and an insulator?

Zielflug [23.3K]

A conductor is what helps heat or electricity pass through an object. Examples of conductors are, silver, iron, aluminum, etc..

An insulator does the opposite and instead, stops either from going through. Examples of an insulator is paper, wood, rubber, etc.

5 0

1 year ago

PLEASE HELP<br><br> is this a chemical or physical change???

skad [1K]

Answer:

Chemical, cause physical are changes affecting the form of a chemical substance, but not its chemical composition. This doesn't affect the substance but the composition.

Explanation:

5 0

2 years ago

Read 2 more answers

72.40% iron,27.60% Oxygen Empirical formula

VARVARA [1.3K]

Explanation:

Fe. O

72.40/ 56 27.60/16

____________________

1.29/1.29 1.725/1.29

_____________________

1. :. 1

<h3>Emperical formula = FeO</h3>

6 0

2 years ago

Which most accurately describes the universe as we currently describe it?

weeeeeb [17]

Answer: The universe consists of all physical objects on earth in space

Explanation:

4 0

2 years ago

Given a gas whose temperature is 418 K at a pressure of 56.0 kPa. What is the pressure of the gas if its Temperature changes to

Rainbow [258]

Answer: P₂=0.44 atm

Explanation:

For this problem, we are dealing with temperature and pressure. We will need to use Gay-Lussac's Law.

Gay-Lussac's Law: $\frac{P_{1} }{T_{1} } =\frac{P_{2} }{T_{2} }$

First, let's do some conversions. Anytime we deal with the Ideal Gas Law and the different laws, we need to make sure our temperature is in Kelvins. Since T₂ is 64°C, we must change it to K.

64+273K=337K

Now, it may be uncomfortable to use kPa instead of atm, so let's convert kPa to atm.

$56.0kPa*\frac{1000Pa}{1kPa} *\frac{atm}{101325Pa} =0.55atm$

Since our units are in atm and K, we can use Gay-Lussac's Law to find P₂.

$P_{2} =\frac{T_{2} P_{1} }{T_{1} }$

$P_{2}=\frac{(337K)(0.55atm)}{418K}$

P₂=0.44 atm

8 0

3 years ago