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
VLD [36.1K]
3 years ago
10

Which of the following describes how metamorphic rock forms?

Chemistry
2 answers:
nasty-shy [4]3 years ago
6 0

Answer:

well they form by heat and pressure

Afina-wow [57]3 years ago
4 0

Answer:

They form when they are under extreme heat and pressure.

Explanation:

You might be interested in
Is evaporation of water a physical change or a chemical change? explain your answer?
Olin [163]
Chemical because it would be impossible to get the evaporated water and turn it back into it's original substance.
8 0
3 years ago
Which of the following best describes asexual reproduction?
yawa3891 [41]

Answer:

First Choice

it produces offspring with a large amount of genetic variation

5 0
3 years ago
Read 2 more answers
Which of the following trends is indirectly proportional to effective nuclear charge, Zeff
Julli [10]

Answer : Option C) Atomic Size

Explanation : The atomic radius of the elements is found to be decreasing if we go from left to right in the modern periodic table. Accordingly, Z_{eff} increases as the number of shielding electrons present in the atomic nucleus of the periodic elements which lies in the same row remains constant while the number of protons in each atomic shell increases.

The effective nuclear charge Z_{eff} of an atom is defined as the net positive charge which is felt by the valence electron of the atomic element.

When Z_{eff} is observed to decrease, it is seen that the atomic radius grows in size. So, it explains the inverse relationship between both. This phenomenon occurs, because there is more screening of the electrons from the nucleus taking place, which is observed due to decrease the attraction between the electron and the nucleus.

7 0
3 years ago
Read 2 more answers
A reaction between substances Y and Z is
Anuta_ua [19.1K]

Answer : The value of activation energy for this reaction is 108.318 kJ/mol

Explanation :

The Arrhenius equation is written as:

K=A\times e^{\frac{-Ea}{RT}}

Taking logarithm on both the sides, we get:

\ln k=-\frac{Ea}{RT}+\ln A             ............(1)

where,

k = rate constant  = 2.95\times 10^{-3}L/mol.s

Ea = activation energy  = ?

T = temperature = 435 K

R = gas constant  = 8.314 J/K.mole

A = pre-exponential factor  = 3.00\times 10^{+10}L/mol.s

Now we have to calculate the value of rate constant by putting the given values in equation 1, we get:

\ln (2.95\times 10^{-3}L/mol.s)=-\frac{Ea}{8.314J/K.mol\times 435K}+\ln (3.00\times 10^{10}L/mol.s)

Ea=108318.365J/mol=108.318kJ/mol

Therefore, the value of activation energy for this reaction is 108.318 kJ/mol

3 0
3 years ago
This is the question pls help me
Kryger [21]

Answer:  B

Explanation:  Graph B compares the two temperatures on separate lines so that we can see the comoparison directly, as a function of time.  Not only does the graph quickly answer which condition id most favorable to colony growth, but it also hints at some behaviors that may accelerate growth as time goes on.  Graph C is a possible answer, if the <u>only</u> question is which promotes growth the fastest.   But the questions asks "compare," which Graph B does not allow as well as Graph C.

4 0
3 years ago
Other questions:
  • Plastic wrap becomes electrically charged when pulled from its box. As a result, it is attracted to objects such as food contain
    8·1 answer
  • True or false: This balanced equation shows the combustion of ethane: 2C2H6 + 7O2 → 4CO2 + 6H2O
    5·1 answer
  • How does Earth's rotation axis cause seasons to change?
    6·1 answer
  • Help need answer to this, its due tomorrow.<br><br> __N2+__H2&gt;__NH3
    12·1 answer
  • How many atoms are there in 10.2 moles of Phosphorous?​
    11·1 answer
  • An antacid tablet weighing 1.30g was fully neutralized at 42.00 mL(an excess amount) of 0.250MHCl. 10.00 mL of 0.100 M NaOH was
    5·1 answer
  • Assign oxidation state to each atom in each element ion or compound.
    10·1 answer
  • How many electrons does Co2- have?
    8·2 answers
  • What does purified water and fluorine make?
    12·1 answer
  • 1- If an atom lose 2 electrons it will give………… A) Ion with 2+ charge called cation C) Ion with 3+ charge called cation B) Ion w
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!