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
iogann1982 [59]
2 years ago
14

HELP NEED THIS DONE BEFORE 9:45!!!!!!!!!!!!!!!! WILL GIVE 100 POINTS AND BRAILIEST IF DONE BEFORE 9:45!!!!!!!!!!!!!

Chemistry
2 answers:
ehidna [41]2 years ago
7 0

Answer:

1.) 742.57 m/s

2.) 132

3.) 4.375 hours

4.) 1080

5.) 81.6 km per hour

6.) 20 min = 1,200 secs1000 / 1200

Explanation:

Your Welcome!

sveticcg [70]2 years ago
7 0

Answer:

1.) 742.57 m/s

2.) 132 m

3.) 4.375 hours

4.) 1080 m

5.) 81.6 km per hour

6.) 20 min = 1,200 secs1000 / 1200

Explanation:

**Brainliest would be appreciated**

You might be interested in
What is te name of P2CL7
EastWind [94]
Diphosphorus heptachloride
7 0
3 years ago
What is the relative humidity if the dry bulb temperature is 16°C and the wet bulb temperature is 16°C?
Vilka [71]
Beef and cheddar I believe !!!
5 0
3 years ago
Which elements have electron configurations that end in ns2np5?
Arada [10]
Last level of atoms of these elements has 2+5= 7 electrons. These elements are located in the 17th group of the Periodic Table, and they are called halogens.
4 0
3 years ago
Read 2 more answers
If 0.680 kg of copper(I) sulfide reacts with excess oxygen, what mass of copper metal may be produced ? A) 0.680 kg B) 0.136 kg
Katen [24]

Answer:

D. 0.543kg of copper metal is produced from 0.680kg of copper 1 sulphide.

Explanation:

First write the equation for the reaction:

Cu2S + O2 ------> 2Cu + SO2

Determine the mole ratio of the two substances:

I mole of Cu2O forms 2 moles of Copper metal

The number of moles of copper 1 sulphide used is;

n = mass of Cu2S / molar mass of Cu2S

Mass = 0.680kg = 680g

Molar mass = 159.16g/mol

n = 680g / 159.16g/mol

n = 4.272moles

Determine the number of mole of copper:

Number of moles of copper metal produced from 4.272moles of copper 1 sulphide is therefore:

n of copper = 2 * 4.272 Moles

n = 8.544moles.

Determine the mass copper:

The mass of copper metal produced is therefore = number of moles of copper * molar mass of copper

mass = 8.544 moles * 63.55g/mol

mass = 542.97grams

Mass = 0.543kg

5 0
4 years ago
Which are the four quantum numbers of the last potassium layer?
aliya0001 [1]
The four quantum numbers for an atom refer to the state of the valence or outermost electron. For a potassium atom, the electron configuration is 1s22s22p63s23p64s1 , which means that n=4
8 0
3 years ago
Other questions:
  • Both gases and ___________ exert a buoyant force.
    13·2 answers
  • what will be the amount of sugar in milligram if the size of the milk chocolate bar is reduce from 14.630g to 5.000g
    10·1 answer
  • The activity of tocopherols is destroyed by
    12·1 answer
  • Will mark as Brainliest.
    14·1 answer
  • Which of the following statements is true?
    9·1 answer
  • What is meant by localised orbitals? Explain.
    9·1 answer
  • A graph of gas pressure versus the number of particles in a container is a straight line. Which other relationship will have a s
    8·2 answers
  • What is (+14)-(-9)=​
    15·2 answers
  • Which of these forces does not act over a distance?
    13·2 answers
  • This graph shows the energy involved in a reaction involving two molecules. Describe what is happening or what the state of the
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!