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
kaheart [24]
3 years ago
6

I DESPERATELY NEED HELP WITH PERCENT AND THEORETICAL YIELD

Chemistry
1 answer:
max2010maxim [7]3 years ago
8 0
Percent is taking the percent over 100 and then next to that out the part over black or VI's versa. Then simplify until you can multiply a number to get to that number and you'll have your missing part
You might be interested in
Which of the following represents the least number of molecues?
Mars2501 [29]

Answer:

Answer: a) 20g of H2O (18.02 g/mol) molecules=6.68x10^23

Explanation:

In order to find the amount of molecules of each of the options, we need to follow the following equation.

molecules=\frac{mass(g)x6.022x10^{23}(molecules/mol) }{atomic weight(g/mol)}

So, let´s get the number of molecules for each of the options.

a) molecules=\frac{20(g)x6.022x10^{23}(molecules/mol) }{18.02(g/mol)}=6.68x10^{23}molecules

b) molecules=\frac{77(g)x6.022x10^{23}(molecules/mol) }{16.06(g/mol)}=2.89x10^{24}molecules

c) molecules=\frac{68(g)x6.022x10^{23}(molecules/mol) }{42.09(g/mol)}=9.73x10^{23}molecules

d) molecules=\frac{100(g)x6.022x10^{23}(molecules/mol) }{44.02(g/mol)}=1.37x10^{24}molecules

d) molecules=\frac{84(g)x6.022x10^{23}(molecules/mol) }{20.01(g/mol)}=2.53x10^{24}molecules

the smalest number is in option a)

Best of luck.

7 0
3 years ago
which count of subatomic particles gives an atom its unique identity as an element, and represents its atomic number? a. the num
Arada [10]
The subatomic particles that identifies an element and also represents its atomic number would be A. The number of protons.
7 0
3 years ago
Read 2 more answers
Calculate the density of a piece of wood, in the units of g/mL, with a volume of 2.5L and a mass of 12.5 kg
Ganezh [65]

Answer:

5 g / ml

Explanation:

Convert the values given to   g   and ml

12.5 kg = 12500 g

2.5 L = 2500 ml

12500 g / 2500 ml = 5 g/ml

5 0
1 year ago
Which statement below matches the correct response with the proper reasoning when comparing the volatility of CH2Cl2 with CH2Br2
Nutka1998 [239]

Answer:

b. CH₂Cl₂ is more volatile than CH₂Br₂ because of the large dispersion forces in CH₂Br₂

Explanation:

CH₂Cl₂ is more volatile than CH₂Br₂ (b.p of CH₂Cl₂ = 39,6 °C; b.p of CH₂Br₂ = 96,95°C). Thus, c. and d. are FALSE

Dipole-dipole interactions in CH₂Cl₂ are greater than the dipole-dipole interactions in CH₂Br₂ because Cl is more electronegative that Br (Cl = 3,16; Br = 2,96). But this mean CH₂Cl₂ is less volatile than CH₂Br₂ but it is false.

There are large dispersion forces in CH₂Br₂ because Br has more electrons and protons than Cl. Large disperson forces mean CH₂Br₂ is less volatile than CH₂Cl₂ and it is true.

I hope it helps!

5 0
3 years ago
4 . suppose you are setting up a reaction that requires an iodide salt and are planning to use sodium iodide. however, at the la
xxTIMURxx [149]
You will need to weight out less
6 0
3 years ago
Other questions:
  • S, selentum 83 has a half life
    15·1 answer
  • During the Big Bang, what were the two main chemical elements created?
    6·2 answers
  • Calculate the percent ionization of nitrous acid in a solution that is 0.311 M in nitrous acid (HNO2) and 0.189 M in potassium n
    7·1 answer
  • What would the molecule CH₄ be classified as?
    12·1 answer
  • Which of the following laboratory procedures best illustrates the law of conservation of mass?
    7·2 answers
  • If the pressure on a gas is increased, then its volume will...?
    9·1 answer
  • Hope you all have a great day ✝️ you are beautiful *muah* now go pick up your crown, here u go ** continue on love ya ​
    14·1 answer
  • Look at the diagram below, which shows an atom of an element. How many valence electrons does it have? Based on this, would the
    14·1 answer
  • Where does the energy required to break the interactions between butane molecules come from when butane boils?​
    10·1 answer
  • Explain with equations and calculations, when necessary, whether an aqueous solution of each of these salts is acidic, basic, or
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!