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
kow [346]
3 years ago
5

Read the passage. Look at the underlined section marked number 9. There may be a mistake in the way the sentence is written. If

you find a mistake, choose the answer that corrects the mistake. If there is no mistake, choose ‘Correct as is.’ A) Correct as is. B) Only the ones who were known to be experts with the needle were invited for an afternoon of quilting, or all others came later for an evening of fun and dancing. C) Only the ones who were known to be experts with the needle were invited for an afternoon of quilting, for all others came later for an evening of fun and dancing. D) Only the ones who were known to be experts with the needle were invited for an afternoon of quilting, and all others came later for an evening of fun and dancing.
Chemistry
2 answers:
ludmilkaskok [199]3 years ago
8 0

Answer:

D

Explanation:

I just got it right on Usatestprep.

Alexus [3.1K]3 years ago
5 0

The answer is D just did it

You might be interested in
What is the mass of bromine gas if it has a pressure of 720 mmHg, volume of 25mL and a temperature of 18.3 degrees Celsius
Annette [7]

Answer:

             Mass = 0.158 g

Explanation:

Formula used,

P V = n R T

Or,

n = P V / R T

Putting values,

n = 0.948 atm . 0.025 L / 0.0821 L.atm.K⁻¹.mol⁻¹ . 291.45

n = 0.00099 mol

Note: we have changed pressure from mmHg to atm, volume from mL to L and temperature from C to K)

Also,

Mass = n . Molecular Mass

Mass = 0.00099 mol × 159.808 g/mol

Mass = 0.158 g

7 0
2 years ago
which atom has a change in oxidation number of -3 in the following redox reaction K2Cr2O7 + H2O +S --> KOH + Cr2O3 +SO2
yaroslaw [1]
You have to calculate the oxidation estates of the atoms in each compound.

I will start with K2Cr2O7 because I believe that Cr is the best candidate to reduce its oxidation number in 3 units.

In K2Cr2O7:

- K has oxidation state of 1+, then K2 has a charge of 2* (1+) = 2+.

- O has oxidation state of 2*, then O7 has a charge of 7* (2-) = 14-.

That makes that Cr2 has charge of 14 - 2 = +12, so each Cr has +12/2 = +6 oxidation state.

In Cr2O3:

- O has oxidation state of 2-, then O3 has charge 3 * (2-) = - 6

- Then, Cr2 has charge 6+, and each Cr has charge 6+ / 2 = 3+.

So, we have seen that Cr reduced its oxidation state in 3 units, from 6+ to 3+.

Answer: Cr has a change in oxidation number of - 3.
6 0
3 years ago
What is the temperature range on the moon?
jolli1 [7]
When sunlight hits the moon's surface, the temperature can reach 260 degrees Fahrenheit (127 degrees Celsius). When the sun goes down, temperatures can dip to minus 280 F (minus 173 C).
8 0
3 years ago
Read 2 more answers
1. Have scientists been able to invent a perpetual motion machine?<br> O Yes<br> O No
FromTheMoon [43]
After using my big brain it’s No
3 0
2 years ago
Read 2 more answers
Compare the function of a switch in an electric circuit to the function of a water faucet. How are they different?
Sever21 [200]
They both turn something on, and the way they are different is the way they turn it off<span>
</span>
5 0
3 years ago
Other questions:
  • Which of the following states that an orbital can obtain two electrons only if all other orbitals at that sublevel contain at le
    6·1 answer
  • LiNO3(aq) and Na2CO3(aq).If a solid forms when solutions containing these salts are mixed, write the ionic equation.
    5·2 answers
  • Which of the following is the correct definition of convection?
    10·2 answers
  • You carefully drop a stone into a beaker full of water. The stone sinks to the bottom and water spills out. What can you say abo
    11·1 answer
  • The crucial difference between relative dating and absolute dating is that
    13·2 answers
  • If a speaker is moved from 2 feet away to 4 feet away, the volume of the sound will: half double quarter stay the same
    10·1 answer
  • PLEASE HELP !<br><br> Convert 0.429 mol AlCl3 to grams
    7·1 answer
  • Solids are not Fluids because ?
    9·2 answers
  • How many grams of Krypton gas will exert a pressure of 5.43 atm in a 5.80-liter container at 25°C?
    10·1 answer
  • an oven adds 2260 j heat to a zinc tray that weighs 195g of the tray starts at 25 what is the final temperature of the tray
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!