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
ladessa [460]
3 years ago
11

How many moles of bromine atoms are in 2.60×10^2 grams of bromine?

Chemistry
1 answer:
AlladinOne [14]3 years ago
4 0
Your answer is 3.25 moles of Bromine

You might be interested in
Determine how much energy is needed to change 50 g of liquid water at 100°C to steam.
marin [14]

Answer:

Q=113,000J

Explanation:

Hello there!

In this case, since the vaporization process is carried out in order to turn a liquid into a gas due to the addition of heat, we can use the following heat equation involving the heat of vaporization of water or any other substance:

Q=m*\Delta _{vap}H

Thus, since this heat of vaporization for water is 2259.36 J/g, we plug in this amount to obtain the total energy for this process.

Q=50*2259.36 J/g\\\\Q=113,000J

Which is positive due to the necessity of heat.

Regards!

5 0
3 years ago
I need this please my brain hurts
GarryVolchara [31]
8.4 grams. I think but I’m not 100% sure
5 0
3 years ago
Lucy wants to attach a goal cost to each of her life goals. Why might she do this?
Natasha2012 [34]

Answer:

So she can have something to reach or look forward to.

Explanation:

none

8 0
3 years ago
A 16.0 mL sample of a 1.04 M potassium sulfate solution is mixed with 14.3 mL of a 0.880 M barium nitrate solution and this prec
stiks02 [169]
Number of moles in the K2SO4 sample
= (16/1000)*1.04= 0.01664 mol

Number of moles in the Ba(NO3)2 sample
= (14.3/1000*0.880)= 0.01258 mol

Since the reaction is a 1:1 ratio between the two reactants, the limiting reagent is the one containing a smaller number of moles, namely Ba(NO3)2.

The molecular mass of BaSO4 is 137.3+(32.06+4*16.00)=233.4
Therefore the theoretical yield of Barium Sulphate is
233.4*0.01258=2.937 g
Actual yield = 2.60 g (given)
Therefore the percentage yield = 2.60/2.937=88.54%

Answer: 
1. the limiting reagent is Barium Nitrate (Ba(NO3)2)
2. the theoretical yield is 2.94 g
3. the percentage yield is 88.5%

I apologize for the mistake previous to this update.

5 0
3 years ago
Are there molecules of sodium chloride within a sodium chloride crystal?
alukav5142 [94]
No, within a crystal like structure or ionic lattice of sodium chloride, there are ions of Na and Cl. Na+ and Cl- respectively that are attracted to each other due to their opposite charges. Many of these ions form a crystal structure.
6 0
3 years ago
Other questions:
  • Which kind of matter can be homogenous or heterogenous ?
    13·1 answer
  • 25 – 30 Apply the appropriate word to the definition indicated. Not all words will be used. 25. _____ Heat content of a system a
    15·1 answer
  • Calculate the molar mass of a gaseous substance if 0.125 g of the gas occupies 93.3 mL at STP.
    13·1 answer
  • Crystal violet standard solutions were prepared and their absorbance at a certain wavelength was measured using a spectrophotome
    9·1 answer
  • HELP I NEED THIS NOW AND FAST PLEASE
    15·1 answer
  • Granite lasts a long time when it is used for building in areas where
    6·1 answer
  • A 1500 kg race car accelerates at a rate of about 9M /s2 as to how much force does the engine need to create for this to happen
    15·1 answer
  • A tiger cub has a pattern on his fur what cell do he get it from ​
    13·2 answers
  • ANSWER PLS!!!!!!!!!!!
    9·1 answer
  • How is this type of question solved?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!