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
PtichkaEL [24]
3 years ago
7

What is the chemical formula for copper (I) sulfide? A) CuS B) CuS2 C) Cu2S D) Cu2S3

Physics
2 answers:
Ganezh [65]3 years ago
4 0

This problem can be solved by using oxidation states. The oxidation state  is based on the electrons an atom loses or gain, or appears to use when forming compounds.To find the formula for Copper (I) Sulfide, we have to first consider the individual ions that come together to form it. Copper (I) is an ion of copper that has a charge of  +1, i.e  Cu^{+} . Sulfur is an element in group 6 of the periodic table. The sulfur ion has a charge of  -2, i.e  S^{2-}.  To form Copper (I) Sulfide, which is electrically neutral, we need 2 Copper (I) ions and 1 sulfur ion.

Cu_2S= 2Cu^+ 1S^-^2= 2(+1) + (-2) = 0.

The reaction is represented by the equation below

2Cu^{+} +S^{2-}-->Cu_2S.

The correct answer is (C)

grin007 [14]3 years ago
3 0

Answer:

CU2S

Explanation:

I took it just now and it is correct

You might be interested in
What happens to some of the sun's energy that does not reach the earth's surface?
LenaWriter [7]
Hello, 

Here is your answer:

The proper answer for this question is that they "get absorbed by the ozone layer".

If you need anymore help feel free to ask me!

Hope this helps!
4 0
3 years ago
When you stand on tiptoes on a bathroom scale, there is an increase in
pychu [463]

Answer:

B) Pressure on the scale, not registered as weight.

Explanation:

This is because energy (derived from weight) becomes compiled on the tips of your toes, and therefore does not increase your weight, but simply the pressure at a smaller point

3 0
3 years ago
An astronaut on Pluto attaches a small brass ball to a 1.00-m length of string and makes a simple pendulum. She times 10 complet
pickupchik [31]

Answer:

The acceleration due to gravity at Pluto is 0.0597 m/s^2.

Explanation:

Length, L = 1 m

10 oscillations in 257 seconds

Time period, T = 257/10 = 25.7 s

Let the acceleration due to gravity is g.

Use the formula of time period of simple pendulum

T = 2\pi\sqrt{\frac{L}{g}}\\\\25.7 = 2 \times 31.4\sqrt{\frac{1}{g}}\\\\g = 0.0597 m/s^2

7 0
3 years ago
Name 5 machine principles​
lidiya [134]

The Wheel & Axle. The wheel has always been considered a major invention in the history of mankind

The Inclined Plane

The Wedge

The Pulley

The Screw

3 0
3 years ago
A woman is standing in the ocean, and she notices that after a wavecrest passes, five more crests pass in a time of 50.0 s. Thed
Vadim26 [7]

Answer:

(a) T = 10 s

(b) f = 0.1 Hz

(c) λ = 32 m

(d) v = 3.2 m/s

(e) Insufficient data

Explanation:

(a)

Time period is defined as the time interval required for one wave to pass. Therefore, the time period can be given as:

T = Period = Time Taken/No. of Waves

T = 50 s/5

<u>T = 10 s</u>

<u></u>

(b)

Frequency is the reciprocal of time period:

f = frequency = 1/T

f = 1/10 s

<u>f = 0.1 Hz</u>

<u></u>

(c)

Wavelength is the distance between two consecutive crests or troughs:

<u>λ = Wavelength = 32 m</u>

<u></u>

(d)

Speed of wave is given by the following formula:

Speed = v = fλ

v = (0.1 Hz)(32 m)

v = 3.2 m/s

(e)

Amplitude cannot be found with given data.

6 0
3 years ago
Other questions:
  • What is the relationship between gravity and electromagatism?
    13·1 answer
  • Any science peeps pls help
    15·1 answer
  • An egg is dropped from a building that is 61 m high.
    8·1 answer
  • what is the the wavelength if a wave cycles up and down three times per second and the distance between each wave is 1.7m?
    13·1 answer
  • How do burrowing rodents affect soil fertility? A) They feed on the nutrients in the soil leaving little for plants to absorb. B
    15·2 answers
  • The cylindrical tub of a dryer in a laundromat rotates counterclockwise about a horizontal axis at 41.5 rev/min as it dries the
    5·1 answer
  • A twenty-acre park was created to give residents a place to hike, bike, and enjoy other recreational activities. Kathy was hired
    6·1 answer
  • The greatest force in momentum will be produced by
    6·1 answer
  • What is The force of gravity between the Aeneas and earth
    13·1 answer
  • The flywheel in the shape of a solid cylinder of mass 75.0 kg and diameter 1.40 m rotates about an axis passing through the cent
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!