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
Advocard [28]
3 years ago
13

How many moles of bromine atoms are in 2.60 × 102 grams of bromine? 1. 0.0152 mol 2. 79.9 mol 3. 10.5 mol 4. 3.25 mol 5. 2.29 mo

l 6. 0.308 mol 7. 48.6 mol?
Chemistry
2 answers:
Lera25 [3.4K]3 years ago
8 0
Moles  =mass/ molar  mass  of  the  bromine  atom
the  molar  mass of  bromine  atom  is  79.904g/mol
mass=2.60  x10^2
therefore  the  moles  of  bromine  atom=
2.60  x10^2g/ 79.904g/mol  =3.25gmoles(answer  4)
irga5000 [103]3 years ago
5 0
<span>There are 3.25 mol of bromine atoms in 2.60 x 102 grams of bromine. I reached this answer by converting grams to moles. To do this, I divided the number of grams that I have of bromine by the weight of bromine. The weight of bromine is 80 grams. So my equation looks like this when it is all set up: 2.6 x 10^2 g/80g. The answer to the equation is 3.25 mol.</span>
You might be interested in
What is an example of a risk management strategy
Nat2105 [25]

Answer:

Risk management can be described as the identification and evaluation of certain risks beforehand and the appropriate steps that can be taken to avoid the problematic situations. Risk management is the forecasting of certain risks and the plans made to resist or overcome these risk situations.

An example of a risk management strategy can be a pet owner understanding that he'll have to make major payments for the health of the pet or will have to pay vet bills. In order to save money, the pet owner decided to go for pet insurance beforehand so that any problematic situation can be avoided.

8 0
3 years ago
__________are when the Sun, Earth, and moon align in a straight line, the tides are higher than normal high
IceJOKER [234]
An eclipse i’m pretty sure right? Lunar maybe?
4 0
2 years ago
when copper sulfide is partially roasted in air (reaction with o2), copper sulfite is formed first. subsequently, upon heating,
Lyrx [107]

The question is incomplete, complete question is:

When copper(I) sulfide is partially roasted in air (reaction with oxygen), copper(I) sulfite is formed first. subsequently, upon heating, the copper sulfite thermally decomposes to copper(I) oxide and sulfur dioxide. Write balanced chemical equations for these two reactions.

Answer:

The balanced chemical equations for these two reactions:

2Cu_2S(s)+3O_2(g)\rightarrow 2Cu_2SO_3(s)

Cu_2SO_3(s)\overset{heat}\rightarrow Cu_2O(s)+SO_2(g)

Explanation:

On  partial roasting of copper sulfide in an air. The balanced chemical reaction is given as:

2Cu_2S(s)+3O_2(g)\rightarrow 2Cu_2SO_3(s)

On further heating of copper(I) sulfite it get decomposes into copper oxide and sulfur dioxide. The balanced chemical reaction is given as:

Cu_2SO_3(s)\overset{heat}\rightarrow Cu_2O(s)+SO_2(g)

5 0
3 years ago
How are molarity and osmolarity different? What property of salts necessitates this distinction? How does this property affect t
lubasha [3.4K]

<u>Explanation:</u>

The number of moles that are present in a liter of a solution is called Molarity. Mole is the unit of Molarity.The concentration of the solutes that are present in a solution refers to Osmolarity . The unit is osmol. This helps in observing the movement of water from one side to another side of a semipermeable membrane.

The main property of salts that helps to understand the differentiation between the molarity and osmolarity is the salts Ionization.  One mole Na+ and one mole of Cl- is produced by the dissociation of a mole of sodium chloride occurs. The diffusion of water is the osmosis. Here, the one molar sodium chloride solution produces a osmotic pressure which is high than one molar glucose solution and this will not undergo dissociation.

4 0
3 years ago
Which of the following is a molecular compound?<br> F) NO2<br> G) Ca(NO3)2<br> H) H2SO4<br> J) NaOH
stiks02 [169]

Answer: H

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • What are some HYDROPHILIC materials?
    15·1 answer
  • If 4.35 grams of zinc metal react with 35.8 grams of silver nitrate, how many grams of silver metal can be formed and how many g
    14·1 answer
  • When used in a shorthand electron configuration, the noble gas core [He] represents 1s^2 2s^2 2p^6.
    6·2 answers
  • Hurry plz<br> How does distance affect the strength of an electric force?
    6·2 answers
  • What is the main cause of global conversation currents
    15·1 answer
  • 142 amu of chlorine would contain
    6·1 answer
  • 54
    5·1 answer
  • What are the effect of water pollition​
    14·1 answer
  • Frrrreeeeeee point freeeeee
    8·1 answer
  • An ideal gas at 20 degrees centigrade has a volume of 12 liters and a pressure of 15 atmospheres. Its temperature is raised to 3
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!