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
Bad White [126]
3 years ago
7

What is the reactant(s) of the reaction below?

Chemistry
1 answer:
svet-max [94.6K]3 years ago
3 0
Answer : C

Reason : The product is MgO which is Magnesium Oxide + CO2 which is carbon dioxide because of the 2
You might be interested in
An autoclave is used to sterilize surgical equipment because
avanturin [10]

The answer to your question is D!

5 0
3 years ago
Read 2 more answers
Calculate the pH of a solution created by placing 2.0 grams of yttrium hydroxide, Y(OH)3, in 2.0 L of H2O. Ksp for Y(OH)3 is 6.0
oee [108]

Answer:

pH = 8.314

Explanation:

  • Y(OH)3(s) ↔ Y+  +  3OH-

equil:   S               S         3S

∴ Ksp = [ Y+ ] * [ OH- ]³ = 6.0 E-24

⇒ 6.0 E-24 = ( S )*( 3S )³

⇒ 6.0 E-24 = 27S∧4

⇒ 2.22 E-25 = S∧4

⇒ ( 2.22 E-25 )∧(1/4) = S

⇒ S = 6.866 E-7 M

⇒ [ OH- ] = 3*S =2.06 E-6 M

⇒ pOH = - Log [ OH- ]

⇒ pOH = - Log ( 2.06 E-6 )

⇒ pOH = 5.686

∴ pH = 14 - pOH

⇒ pH = 8.314

8 0
3 years ago
How long, in seconds, would it take for the concentration of A to decrease from 0.860 M to 0.310 M?
kogti [31]

Answer:

2.038 seconds.

Explanation:

So, in the question above we are given the following parameters in order to solve this question. We are given a rate constant of 0.500 s^-, initial concentration= 0.860 M and final concentration= 0.310 M,the time,t =??.

Assuming that the equation for the first order of reaction is given below,that is;

A ---------------------------------> products.

Recall the formula below;

B= B° e^-kt.

Therefore, e^-kt = B/B°.

-kt = ln B/B°.

kt= ln B°/B.

Where B° and B are the amount of the initial concentration and the amount of the concentration remaining, k is the rate constant and t = time taken for the concentration to decrease.

So, we have; time taken,t = ln( 0.860/.310)/0.500.

==> ln 2.77/0.500.

==> time taken,t =2.038 seconds.

6 0
3 years ago
Define the following terms.<br> a. Capillary action<br> b. Chromatogram
jonny [76]

Answer:

<em>1</em><em>.</em><em>Capillary action is important for moving water (and all of the things that are dissolved in it) around. </em>

<em>2</em><em>.</em><em>the pattern formed on an adsorbent medium by the layers of components separated by chromatography. </em>

Explanation:

hope this help you

6 0
2 years ago
Balance and classify this reaction:<br> C6H6 +02 →CO2 +H₂O
laila [671]
This is a combustion reaction.
2C6H6 + 9O2➡️ 6CO2 + 6H2O
6 0
2 years ago
Other questions:
  • Why do scientist record observations during an experiment?
    14·1 answer
  • During science class billy used litmus paper to determine the ph of an unknown liquid. the blue litmus paper turns red but there
    11·1 answer
  • A 25.0 g piece of aluminum (which has a molar heat capacity of 24.03 J/mol°C) is heated to 86.4°C and dropped into a calorimeter
    6·1 answer
  • The larger the molecules of a substance, the the London forces between them. A larger molecule has more electrons and a greater
    8·1 answer
  • Ethylene oxide (EO) is prepared by the vapor-phase oxidation of ethylene. Its main uses are in the preparation of the antifreeze
    14·1 answer
  • how many millilitres of water at 23 degree centigrade with the density of 1.00 g / ml must be mixed with 180 ml (about 6 oz) of
    6·1 answer
  • Which elements has the larger atomic radius, Si or Sr
    12·1 answer
  • In order to predict the outcome of the reaction, write the molecular, full ionic, and net ionic equations for a mixture of aqueo
    9·1 answer
  • How many grams of calcium are in 2.65 g of CaCO3?
    9·1 answer
  • Migration is _______. a. the movement of organisms from a native location to a foreign location b. the movement of organisms fro
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!