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
Natasha_Volkova [10]
3 years ago
13

Use dimensional analysis to solve the following problems. Pay attention to correct use of units and correct use of significant f

igures in calculations. Please show work!
3) Convert 0.250 moles of aluminum sulfate to grams.

4) Convert 2.70 grams of ammonia to moles.
Chemistry
2 answers:
MrRissso [65]3 years ago
8 0

Answer:

0.000731 grams aluminium sulfate

46.0 mols ammonia

Explanation:

ALS = shorthand for aluminium sulfate which has a molar mass of 342.15 g/mol

ALS: \frac{0.250mols}{1} *\frac{1g}{342.15mols} = \frac{0.250g}{342.15}=0.0007307 g

NH3 has a molar mass of 17.031 g/mol

NH3: \frac{2.70g}{1} *\frac{17.031mols}{1g} = \frac{0.250g}{342.15}=45.9837 mols

rusak2 [61]3 years ago
4 0

Aluminium sulphate (AlS) whose molar mass is= \sf{ 342.15\dfrac{g}{mol}  }

we have to find the 0.250 moles of aluminum sulphate.

\implies AlS=\dfrac{1g}{342.15~mole}×0.250~mole \\\\\implies AlS=\dfrac{0.250}{342.15}\\\\\implies \dfrac{\frac{250}{1000}}{\frac{34215}{100}}\\\\\implies \dfrac{250}{1000}×\dfrac{100}{34215}\\\\=0.00073067\approx{0.0007307~g}

\\\\\\

Ammonia(NH3) whose molar mass is =\sf{17.031\dfrac{mol}{g}   }

We have to find 2.70 grams of ammonia

\implies NH_{3}=\dfrac{17.031~mol}{1g}×2.70g\\\\ 17.031×2.70\\\\\dfrac{17031}{1000}×\dfrac{270}{100}\\\\ \dfrac{4598370}{100000}\\\\=45.9837\approx{46~mole}

You might be interested in
What existed before the universe
marusya05 [52]
Technically speaking absolutely nothing but from a religious standpoint God did
6 0
3 years ago
A 3.00-L flask is filled with gaseous ammonia, NH3. The gas pressure measured at 27.0 ∘C is 2.55 atm . Assuming ideal gas behavi
Whitepunk [10]

Answer : The mass of ammonia present in the flask in three significant figures are, 5.28 grams.

Solution :

Using ideal gas equation,

PV=nRT\\\\PV=\frac{w}{M}\times RT

where,

n = number of moles of gas

w = mass of ammonia gas  = ?

P = pressure of the ammonia gas = 2.55 atm

T = temperature of the ammonia gas = 27^oC=273+27=300K

M = molar mass of ammonia gas = 17 g/mole

R = gas constant = 0.0821 L.atm/mole.K

V = volume of ammonia gas = 3.00 L

Now put all the given values in the above equation, we get the mass of ammonia gas.

(2.55atm)\times (3.00L)=\frac{w}{17g/mole}\times (0.0821L.atm/mole.K)\times (300K)

w=5.28g

Therefore, the mass of ammonia present in the flask in three significant figures are, 5.28 grams.

8 0
3 years ago
ILL GIVE YOU BRAINLIST !!! HAVE TO GET IT RIGHT !!
inysia [295]

Answer: The 3rd and 6th bullet point is the quantitative data.

Explanation: Quantitative data is expressed by NUMBERS and Qualitative data is expressed by WORDS. The 3rd and 6th one is correct because they both use numbers to compare how much time hummingbirds spent feeding on nectar.  

4 0
3 years ago
Describe a method of Municipal treatment of water with neat diagram?​
stich3 [128]
Water treatment process
4 0
3 years ago
Which is a FALSE statement about the possible benefits of nanocars? A. They could work together to build really complex things.
kondor19780726 [428]
C, they could work together to make things from the top down. 
6 0
3 years ago
Other questions:
  • An unknown liquid has a mass of 30.6 g
    13·1 answer
  • Use a periodic table to complete the table below:
    15·1 answer
  • As the atomic number of elements increases across a period on the periodic table, the atomic radius
    10·1 answer
  • Explain how science can help you make more informed decisions about what to eat.
    6·2 answers
  • Name the three kinds of sub-atomic particles found in an atom: Protons Axons Polyhedrons Electrons Neutrons
    9·1 answer
  • Can somebody try and answer 1 of these questions also for 5 answer in 3 sentences thx!!!!
    5·1 answer
  • PH of a 0.00072 M HCl solution.
    5·1 answer
  • An electron-dot structure is a convenient method of representing
    5·1 answer
  • Combustion Analysis of an unknown hydrocarbon resulted in the capture of 216.00 g of water vapor and 440.00 g of CO2. The total
    5·1 answer
  • Describe how the mass spectrometry readout is consistent with the chemical structure of hydrochloric acid.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!