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
morpeh [17]
2 years ago
14

A student performed the following reaction: 2 A + B2 --> 2AB

Physics
1 answer:
raketka [301]2 years ago
6 0

Answer:

116g

Explanation:

Given parameters:

Mass of A  = 88g

Mass of B₂  = 28g

Unknown:

Mass of AB produced  = ?

Solution:

The reaction expression is given as:

            2A + B₂ →  2AB

According to the law of conservation of matter "matter is neither created nor destroyed but changed from one form to another".

  In retrospect;

      Mass of A + Mass of B₂  =  Mass of AB

  Now insert the parameters and solve;

  Mass of AB  = 88g + 28g  = 116g

You might be interested in
An electron is ejected from the cathode by a photon with an energy slightly greater than the work function of the cathode. How w
Ksivusya [100]

It will be approximately equal.

<h3>How will the final kinetic energy change?</h3>

We can infer that all of the energy in the electron is Potential energy (PE) because the energy provided by the photon is hardly enough to outweigh the work function.

It will gain kinetic energy (KE) as it advances in the direction of the anode because it is moving through an electric field. All of the PE will have been transformed to KE by the time it reaches the anode.

According to the question

K = hf - W

W = Work function

The energy of photons is comparable. After conversion, there was only a little amount of KE remaining.

Therefore, PE (W) essentially equals KE (K).

It will about be equal.

Learn more about work function here:

brainly.com/question/19595244

#SPJ4

3 0
2 years ago
It is determined that a certain light wave has a wavelength of 3.012 ×10−12 m. The light travels at 2.99 ×108 m/s. What is the f
horsena [70]

Answer:

Explanation:

velocity=frequency*wavelength

velocity = 2.99*10^8 m/s

frequency = ?

wavelength = 3.012*10^-12

2.99*10^8m/s = (f)(3.012*10^-12)

f=9.58*10^19 Hertz    

5 0
3 years ago
Your teacher (175kg) and the lab (15kg) are 2m apart. What is the gravitational force between them? Draw a FBD, and label
Pachacha [2.7K]
The gravitational force between two objects is given by
F=G \frac{m_1 m_2 }{r^2}
where
G is the gravitational constant
m1 and m2 are the masses of the two objects
r is the separation between the two objects

In this problem, m_1 = 175 kg, m_2 =15 kg and r=2 m, therefore the gravitational force between the two objects is
F=(6.67 \cdot 10^{-11} m^3 kg^{-1} s^{-2}) \frac{(175 kg)(15 kg)}{(2m)^2}=4.38 \cdot10^{-8} N
7 0
3 years ago
Why does helium have more spectral lines than hydrogen?
Lynna [10]

<span>This is because Helium has two valence electrons compared to Hydrogen which has only one. Helium has more energy levels for an electron to jump thus more spectral lines to occur. The spectral lines relating to each change of energy level would be more grouped together and hence the greater chance of them falling in the visible range.</span>

8 0
3 years ago
In which scenario is an animal doing work? Check all that apply.
AleksAgata [21]

Answer:

I think the letter B is a good idea for me to do the same as oneroure oneroure I I was just wondering if you could give me a a little more about what you are looking for in a career in the area of the main crop between the rows of the main crop between the rows of the main crop between the between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop main crop between the between the rows of rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between a single one or more and then you have the right one for your hair that fits your hair and you are not the one to choose from the given choice of the following proof choose your own style or the color of your a color scheme that is used in used color and colors and colors of your company name what you want and how you can easily find the perfect fit in a wide range of colors the colors colors you choose want for the following elements to make sure your style is style fits into your design or and how your design is design in your style style design and color style design and color style design design and style design for your wedding photography studio design and photography studio design studio photography gallery featuring a wide web design gallery and photo design gallery design and design gallery and photo design and design studio photography studio design and photography studio photography photography photography photography photography gallery photography photography photography studio wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding wedding photography

6 0
2 years ago
Other questions:
  • Assume that the moon is hit by about 25 million micrometeorite impacts each day, and that these impacts strike randomly around t
    10·2 answers
  • You can analogize the photoelectric energy to
    15·1 answer
  • Which is described as the flow of charge particles?
    14·1 answer
  • Which nuclei is not radioactive? <br> A. Am-241<br> B. Mg-24<br> C. Pu-241<br> D. U-238
    11·1 answer
  • Physical science help
    15·2 answers
  • A 4.0-m-diameter playground merry-go-round, with a moment of inertia of
    7·1 answer
  • WILL VOTE MOST BRAINLIEST
    15·1 answer
  • How are waves that are created by a musical instrument and waves that
    11·1 answer
  • A turtle accelerates from a stop at 3m/s/s to the South for 8s. What is the turtle’s final velocity? Show your work and include
    15·1 answer
  • A. The potential energy stored in the compressed spring of a dart gun, with a spring constant of 62.00 N/m, is 0.940 J. Find by
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!