1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Komok [63]
3 years ago
10

What would be the mass of 9.03*10^21 molecules of hydrobromic acid

Chemistry
1 answer:
Fynjy0 [20]3 years ago
3 0

Answer:

2.11 g hydrobromic acid (correct to 3SF)

Explanation:

Molecular formula of hydrobromic acid = C2H5BrO2

mass of C2H5BrO2 = 140.96g

Beginning with what we're given, 9.03*10^21 we then make a conversion by using Avegadro's number which is 6.02*10^23 per mole (Oct. 23 at 6:02 am is national mole day :) Then, we need to convert out of moles, 140.96g hydrombromic acid per mole.

It looks like this:

9.03*10^21 molecules • (1 mol C2H5BrO2 / 6.02*10^23 molecules) • (140g C2H5BrO2 / 1 mol) = 2.1144 g C2H5BrO2

You might be interested in
Which statement is best supported by the diagram?
wlad13 [49]

Answer:

The answer is A.

Explanation:

when the ball gets to R and S then that's when gravity starts to take over instead of kinetic energy so therefore its potential energy

7 0
3 years ago
Read 2 more answers
How can you minimize a collision summary
ElenaW [278]

One of the ways to minimize a collision is to slow down: When you can't find an escape and you're definitely going to collide with something, you should slow your vehicle down as much as possible.

Hope this helps ^^

4 0
3 years ago
How many grams of Cl2 are consumed to produce 12.0 g of KCl?
Alla [95]

The reaction is:

Cl2 + 2 KBr --> 2 KCl + Br2

Moles of KCl is

n = m /M = 12 /74 = 0.16 mol

As, twice the moles of KCl is producing from 1 mol of chlorine

mole of Cl2 = 0.16 /2 = 0.08 mol

Mass of Cl2

m /70 = 0.08 = 5.6 g

Hence, 5.6 g mol Cl2 consumed to produce KCl

7 0
3 years ago
How many molecules are there in 4.00 l of oxygen gas at 500.∘ c and 50.0 torr?
Oliga [24]
From  the  ideal  gas law   
pv=nRT , n  is  therefore PV/RT
R is  the
R is  gas  constant =62.364 torr/mol/k
P=500torr
 V=4.00l
T=500+273=773k
n={(500 torr x 4.00l)/(62.364 x773k)}=0.041moles
the  number  of  molecules=moles  x avorgadro costant that is  6.022x10^23)
6.022 x 10^23)  x0.041=2.469 x10^22molecules
3 0
3 years ago
Write the Lewis structure for ethanol (CH3CH2OH), the alcohol found in alcoholic beverages, then answer the following questions:
hodyreva [135]

Answer :

(1) The number of valence electrons present in the compound is, 20

(2) The number of bonded electrons present in the compound is, 16

(3) The number of lone pair electrons present in the compound is, 4

(4) The number of single bonds present in the compound is, 8

Explanation :

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

The given molecule is, CH_3CH_2OH

As we know that carbon has '4' valence electrons, hydrogen has '1' valence electrons and oxygen has '6' valence electrons.

Therefore, the total number of valence electrons in CH_3CH_2OH = 2(4) + 6(1) + 6 = 20

According to Lewis-dot structure, there are 16 number of bonding electrons and 4 number of non-bonding electrons or lone pair of electrons.

The Lewis-dot structure of CH_3CH_2OH is shown below.

8 0
3 years ago
Other questions:
  • Identify the state of matter with the lowest degree of freedom between the molecules
    7·2 answers
  • How much heat is absorbed during production of 112 g of NO by the combination of nitrogen and oxygen?
    9·1 answer
  • If 518.0 g sample of a metal has a volume of 2.00mL what is the density of the metal
    6·1 answer
  • The work function of an element is the energy required to remove an electron from the surface of the solid element. The work fun
    7·1 answer
  • In comparing 1 mole of carbon atoms to one mole of magnesium atoms, which statement is TRUE?
    10·1 answer
  • Compare and contrast granite and rhyolite
    7·2 answers
  • What is the final temperature of a sample of water if 12.15J of energy is added to 475g of water at an initial temperature of 20
    9·1 answer
  • Which statement best describes how an existing theory is often affected by the development of new technology?
    9·1 answer
  • Correct ANSWER GETS BRAINLIST
    11·1 answer
  • A car's engine runs on gasoline. A scientist describes the engine to be about 12% efficient. What does this mean?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!