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
Vika [28.1K]
2 years ago
5

As a rock falls, some of its potential energy is transformed into kinetic energy. What is true about the mechanical energy durin

g this transformation?
A.
It decreases because potential energy is a kind of mechanical energy.
B.
It does not change because kinetic energy and potential energy are both kinds of mechanical energy.
C.
It increases because kinetic energy is a kind of mechanical energy.
D.
It does not change because kinetic energy and potential energy are not kinds of mechanical energy.
Chemistry
1 answer:
mars1129 [50]2 years ago
4 0

Answer:

a or b

Explanation:

because those are the most likely to be true

now it gives you two options so i thinks it might be B but you could choose A you got two options choose wisely

You might be interested in
An electron's quantum number falls under which structure classification O macroscopic O subatomic atomic Omicroscopic O none of
Tems11 [23]

Answer:

O subatomic atomic

Explanation:

Each orbitals of an atom and electrons accommodated are described by a set of quantum numbers. These numbers gives the position of an orbital with respect to the nucleus, the shape of the orbital, its spatial orientation and the spin of the electron in the orbital.

The quantum numbers can be used to write proper sub-level notation of an atom.

6 0
3 years ago
Most plastics are made from oil or natural gas. One step in making plastics from these resources is called cracking. Cracking is
kramer

Answer:

true im pretty sure

Explanation:

6 0
3 years ago
The equilibrium constant, K., for the following reaction is 83.3 at 500 K. PC13(g) + Cl2(g) = PC13(E) Calculate the equilibrium
lord [1]

Answer:

The equilibrium concentration of PCl_5=0.228 M.

The equilibrium concentration of PCl_3=0.280 M -0.228 M=0.052M.

The equilibrium concentration of Cl_2=0.280 M -0.228 M=0.052M.

Explanation:

Answer:

The equilibrium concentration of HCl is 0.01707 M.

Explanation:

Equilibrium constant of the reaction = K_c=83.3

Moles of PCl_3 = 0.280 mol

Concentration of  [PCl_3]=\frac{0.280 mol}{1.00 L}=0.280 M

Moles of Cl_ = 0.280 mol

Concentration of [Cl_2]=\frac{0.280 mol}{1.00 L}=0.280M

           PCl_3(g)+Cl_2(g)\rightleftharpoons PCl_5(g)

Initial:            0.280      0.280                            0

At eq'm:         (0.280-x)   (0.280-x)                     x

We are given:

[PCl_3]_{eq}=(0.280-x)

[Cl_2]_{eq}=(0.280-x)

[PCl_5]_{eq}=x

Calculating for 'x'. we get:

The expression of K_{c} for above reaction follows:

K_c=\frac{[PCl_5]}{[PCl_3][Cl_2]}

Putting values in above equation, we get:

83.3=\frac{x}{(0.280-x)\times (0.280-x)}

On solving this quadratic equation we get:

x = 0.228, 0.344

0.228 M < 0.280 M< 0.344 M

x = 0.228 M

The equilibrium concentration of PCl_5=0.228 M.

The equilibrium concentration of PCl_3=0.280 M -0.228 M=0.052M.

The equilibrium concentration of Cl_2=0.280 M -0.228 M=0.052M.

4 0
3 years ago
What number of moles of O2 will be produced by the decomposition of 4.4 moles of water?
adelina 88 [10]
2.2 moles of O2 will be produced by the decomposition of 4.4 moles of water.
7 0
4 years ago
And experiment a student measures the speed of a toy car locations K through N as it rolls down a ramp based on the data collect
valentina_108 [34]

Answer:

B) The average speed of the car increases as distance traveled increases.

Explanation:

4 0
4 years ago
Other questions:
  • Part H Why is the number of hydrogen atoms and oxygen atoms the same in both the reactants and the products?​
    13·1 answer
  • For the reaction 2Fe + O2 = 2FeO, how many grams of iron oxide are produced from 8.00 mol of iron? when o2 is an excess
    8·1 answer
  • A mixture contains two or more substances chemically combined while a compound contains two or more substances physically combin
    6·1 answer
  • The quantity 0.202 g has _____________________________ significant<br> figures.
    5·1 answer
  • 1) In 1.31 g of a chloride of titanium, there is 0.528 g of titanium. What is the empirical formula of this titanium chloride?
    15·1 answer
  • What is the formula mass of mgcl2
    13·1 answer
  • Does prokaryotes have DNA
    10·2 answers
  • S]
    8·1 answer
  • 0.6 sample an unknown organic acid found in muscle cells is burned in air and found to contain 0.24g of carbon, 0.04g of hydroge
    14·1 answer
  • 4. Anh measured the temperature of a pond near his house. Before he left for school, the water in the
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!