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
Pani-rosa [81]
2 years ago
10

someone pls help me with my chemistry test plsss my teacher changes the questions so I can't search them up. its 21 questions so

I have to upload multiple posts but look at my account to get the rest pls.

Chemistry
1 answer:
shusha [124]2 years ago
7 0

Answer:

Correct option is

B

5 liters of CH

4

(g)NO

2

at STP

No. of molecules=

22.4

5

mol=

22.4

5

×N

A

molecules

A) 5ℊ of H

2

(g)

No. of moles=

2

5

mol=

2

5

×N

A

molecules

B) 5l of CH

4

(g)

No. of moles of CH

4

=

22.4

5

mol=

22.4

5

N

A

molecules

C) 5 mol of O

2

=5N

A

O

2

molecules

D) 5×10

23

molecules of CO

2

(g)

Molecules of 5l NO

2

(g) at STP=5l of CH

4

(g) molecules at STP

Therefore, option B is correct.

You might be interested in
Suppose a large atom bonds with a small atom.  Will the properties of the new molecule be the same as the large atom, the small
Stels [109]
Everything will be the same except that the atoms will be together nothing changes!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
6 0
3 years ago
3CuCl2 + 2Al => 3Cu + 2AlCl3
Marrrta [24]

The reaction includes the single replacement reaction and redox

<h3>Further explanation</h3>

Single replacement : one element replaces another element in a compound

A + BC ⇒ AC + B

The oxidation-reduction reaction or abbreviated as Redox is a chemical reaction in which there is a change in oxidation number

3CuCl + 2Al => 3Cu + 2AlCl₃

  • 1. Single replacement

Al replacing Cu in the CuCl compound

  • 2. Redox reaction

3Cu²⁺ + 6e⁻⇒ 3Cu reduction(oxidation number from +2 to 0)

2Al⇒2Al³⁺+6e⁻ oxidation(oxidation number from 0 to +3)

8 0
3 years ago
Can someone please help me?
Naya [18.7K]

Answer:

I know its not Oxygen (O2) because we need that gas to breath if not more of that gas! and i know its not helium because it is not very toxic and not a crisis in the world

Your answers are going to be B. and D.

have a nice day!

3 0
2 years ago
Read 2 more answers
What speeds up a chemical reaction
storchak [24]
Catalyst can speed up chemical reaction without being used up or involved in thr reaction..
5 0
3 years ago
PLSSS HEALP ASAP!!!! WILL REWARD
Liula [17]

A)1.75×3 moles of carbon monoxide

B)2:3

A)each mole of ferric oxide requires 3 moles of carbon monoxide. Therefore 1.75 moles requires 1.75 ×3 moles of carbon monoxide

6 0
2 years ago
Other questions:
  • Which of the following types of fingerprints is collected with gray or black powder and fingerprint tape?
    5·1 answer
  • Assuming all gas is removed from the tank when filling balloons, how many 0.75 L balloons can be filled from a tank that contain
    14·2 answers
  • Which diagram shows a pair of electrons that have opposite spins?<br> OT<br> 11<br> 11<br> 个个
    13·2 answers
  • The following characteristics describe which of these terms? the substance is not uniform in appearance and each part of the mix
    5·2 answers
  • There are 5 areas of chemistry:physical chemistry, organic chemistry, analytical chemistry, biochemistry and inorganic chemistry
    15·1 answer
  • The Reynolds number, Re, is a dimensionless number used to characterize different flow regimes in a fluid. The Reynolds number c
    11·1 answer
  • How is the slope of a line calculated?
    6·1 answer
  • Which of the following is a step in the conversion of 2.5 hm3 to L?
    7·1 answer
  • 32 g of CH4 react with 128 g of O2, producing 88 g of CO2. How many grams of water are produced?
    11·1 answer
  • The energy of a photon is 4.23 x 10-17 J. What is the wavelength of the radiation?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!