answer.
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
SpyIntel [72]
2 years ago
12

What is the mean rate of reaction 3.4g of copper sulphate was produced in 3 days?

Chemistry
1 answer:
kramer2 years ago
3 0

Answer:

8.1×10^-8 mols-1

Explanation:

Now we have the mass of copper sulphate produced after three days. Recall that the rate of reaction is given as;

Rate= change in the concentration of product/time

At the beginning of the reaction, there was 0 moles of copper sulphate

After 72 hours or 259200 seconds, there was 3.4g/160gmol-1 = 0.021 moles of copper sulphate.

Note that 160gmol-1 is the molar mass of copper sulphate.

Hence;

Rate of reaction= 0.021 moles /259200 seconds

Hence, the rate of reaction is 8.1×10^-8 mols-1

Rate of reaction= 8.1×10^-8 mols-1

You might be interested in
Cups ans glasses are taking too long to air dry. This could be caused by
SOVA2 [1]

Answer: Servsafe 9

Explanation:

Remove food from the surface

clean the surface

rinse the surface

sanitize the surface

allow the surface to air dry

3 0
2 years ago
Functional group and bond hybridization of vanillin
lana66690 [7]

Vanillin is the common name for 4-hydroxy-3-methoxy-benzaldehyde.

See attached figure for the structure.

Vanillin have 3 functional groups:

1) aldehyde group:  R-HC=O, in which the carbon is double bonded to oxygen

2) phenolic hydroxide group: R-OH, were the hydroxyl group is bounded to a carbon from the benzene ring

3) ether group: R-O-R, were hydrogen is bounded through sigma bonds to carbons

Now for the hybridization we have:

The carbon atoms involved in the benzene ring and the red carbon atom (from the aldehyde group) have a <u>sp²</u> hybridization because they are involved in double bonds.

The carbon atom from the methoxy group (R-O-CH₃) and the blue oxygen's have a  <u>sp³</u>  hybridization because they are involved only in single bonds.

7 0
2 years ago
Victoria has a crate of vegetables that weighs 100 newtons. She exerts a force of 100 newtons to lift the crate with a pulley. W
Dennis_Churaev [7]

Simply put, MA = Force Out / Force in. That's the way it is usually stated. The force out is normally what you need to move. The force in is what you need to supply to get the force out. Most machines will give you an MA of more than 1. Some (like your arm) will give you less than 1 and others (like this one) will give you exactly one.

This one is frictionless, otherwise it would slip into less than one if it had friction.

Answer B


7 0
2 years ago
Read 2 more answers
Choose the ingredients needed for nuclear fusion. Check all that apply. energy helium gas high temperatures hydrogen gas low pre
Igoryamba

answer:

high temperatures

hydrogen gas

7 0
2 years ago
Which diagram shows a pattern similar to the emission spectrum of hydrogen?
rosijanka [135]
Hello!

the correct answer would be b!

explanation: with increasing wavelength, it goes from higher energy to lower energy. since energy levels converge at higher energy levels, the answer b shows that the image of line becoming more separated than the following other answers

if this helps, click “thanks” :)

- emily
3 0
2 years ago
Other questions:
  • An unknown element, x, reacts with lithium to form the compound li2x. in other compounds this element also can accommodate up to
    11·2 answers
  • A gold atom has a radius of 145 pm. If you could string gold atoms like beads on a thread, how many atoms would you need to have
    5·1 answer
  • How does the equilibrium change to counter the removal of A in this reaction? A + B ⇌ AB
    5·2 answers
  • What color does green calcite streak? is this true for all colors of calcite?
    14·1 answer
  • Given a water solution that contains 1.704 kg of HNO:/kg H:O and has a specific gravity of 1.382 at 20 °C, express the compositi
    9·1 answer
  • 25.0 ml of a 6.0 m hno3 stock solution is diluted using water to 100 ml. How many moles of hno3 are present in the dilute soluti
    15·2 answers
  • Use the drop-down menus to label each of the following changes P for physical change and C for the chemical change. The substanc
    10·2 answers
  • Combustion analysis of a 13.42-g sample of the unknown organic compound (which contains only carbon, hydrogen, and oxygen) produ
    14·1 answer
  • Which of the following phrases describes valence electrons?
    15·1 answer
  • Calculate the specific heat capacity for a 22.7-g sample of lead that absorbs 237 J when its temperature increases from 29.8 °C
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!