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
Anit [1.1K]
3 years ago
8

Use the diagram and drop-down menus to answer each question.

Chemistry
2 answers:
KATRIN_1 [288]3 years ago
3 0

Answer: circuit B, Circuit A, Circuit B

Explanation:

Edgunity

motikmotik3 years ago
3 0

Answer circuit B circuit A circuit B

Explanation:

i got it on Eng

You might be interested in
An increase in greenhouse gases results in?​
grin007 [14]
An increase in the atmospheric concentrations of greenhouse gases produces a positive climate forcing, or warming effect. From 1990 to 2015, the total warming effect from greenhouse gases added by humans to the Earth's atmosphere increased by 37 percent.
5 0
3 years ago
Why does the sky change colors at sunrise and sunset
aniked [119]

Answer:

As the sun's angle changes, (because of the rotation of the earth) the sun slowly begins to shine more or less sunshine slowly. When sunsets and sunrises occur, the color of the sky changes because the sunshine is starting to fade out or in.

I put it in my own words so you don't have to worry about plagiarism :)

4 0
3 years ago
If the a of a monoprotic weak acid is 2. 6×10−6, what is the ph of a 0. 33 m solution of this acid?
yawa3891 [41]

The pH of the monoprotic weak acid is 2.79.

<h3>What are weak acids?</h3>

The weak acids are the acids that do not fully dissociate into ions in the solution. Strong acids fully dissociate into ions.

The chemical reaction is HA(aq) ⇄ A⁻(aq) + H⁺(aq).

c (monoprotic acid) = 0.33 M.

Ka = 1.2·10⁻⁶

[A⁻] = [H⁺] = x

[HA] = 0.33 M - x

Ka = [A⁻]·[H⁺] / [HA]

2. 6 × 10⁻⁶ = x² / (0.33 M - x)

Solve quadratic equation: [H⁺] = 0.000524 M.

pH = -log[H⁺]

pH = -log(0.000524 M)

pH = 2.79

Thus,  the pH of the monoprotic weak acid is 2.79

To learn more about weak acids, refer to the below link:

brainly.com/question/13032224

#SPJ4

5 0
2 years ago
Help me 20 points please someone just get this done
faust18 [17]

Answer:

whut done

Explanation:

I ain't see nothing

6 0
3 years ago
Read 2 more answers
[15 Points, Stoichiometry and Gases]
KiRa [710]

The reaction is

CaC₂(s) + 2H₂O (l) -----> Ca(OH)₂ (s) + C₂H₂ (g) ​

As we have data of gas ethyne (or acetylene), C₂H₂

We can calculate the moles of acetylene and from this we can estimate the mass of calcium carbide taken

the moles of acetylene will be calculated using ideal gas equation

PV =nRT

R = gas constant = 0.0821 Latm/molK

T = 385 K

V = volume = 550 L

P = Pressure = 1.25 atm

n = moles = ?

n = PV /RT = 1.25 X 550 / 0.0821 X 385 = 21.75 mol

As per balanced equation these moles of acetylene will be obtained from same moles of calcium carbide

moles of calcium carbide = 21.75mol

molar mass of CaC₂ = 40 + 24 = 64

mass of CaC₂ = moles X molar mass = 21.75 X 64 = 1392g

6 0
3 years ago
Read 2 more answers
Other questions:
  • Hi i need hel does any one know what P3N2 means ??? .-.
    9·1 answer
  • What particles do during phase changes
    10·1 answer
  • Phoebe removes frozen vegetables from the freezer to make herself a stir-fry. She’s in a bit of a hurry, so she immerses the pla
    15·2 answers
  • In living cells, ATP stores the energy that _____.
    10·1 answer
  • Which is the reason that ionic compounds are brittle? The bonds between the anions and cations are weak and therefore easily bro
    6·1 answer
  • What would barium do to obtain a noble gas structure
    11·1 answer
  • What is the electron configuration of an element with atomic number 20? A. 1s2 2s2 2p6 3s2 3p5 B. 1s2 2s2 2p6 3s2 3p6 C. 1s2 2s2
    5·2 answers
  • Why is specific heat capacity more useful then heat capacity when comparing two materials
    14·1 answer
  • How does the Sun get energy?
    14·2 answers
  • The elemental mass percent composition of ascorbic acid (vitamin C ) is 40.92% C , 4.58% H , and 54.50% O . Determine the empiri
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!