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
Talja [164]
3 years ago
11

The Statue of Liberty is composed of copper. The smallest particle of any amount of copper is A) an atom. B) an element. C) a co

mpound. Eliminate D) a molecule.
Chemistry
1 answer:
Lina20 [59]3 years ago
5 0

an atom because its the smallest thing in the entire world and in all orgnaisms

You might be interested in
3. What does Letter X and Y represent?
Katarina [22]
Y means families and are vertical (alkaline, alkaline earthmetals, halogens, transition metals, noble gases, etc)
x means periods andare horizontal (1,2,3,4,5)
7 0
3 years ago
A mixture of CO (g) and excess O2(g) is placed in a 1.0 L reaction vessel at 100.0C and a total pressure of 1.50 atm. The CO is
umka2103 [35]

Answer:

Partial pressure of of CO₂ in the product mixture is 0,20atm

Explanation:

The balance equation is:

2CO(g) + O₂(g) → 2CO₂(g)

Total pressure of CO(g) and O₂(g) gases before reaction at 100,0°C and 1,0L is 1,50 atm. You can say:

X₁ + Y₁  = 1,50atm <em>(1)</em>

Where X₁ is initial partial pressure CO and Y₁ is initial partial pressure of O₂

After reaction partial pressures are:

X₂ = X₁ - 2n = 0; <em>2n = X₁</em>

Y₂ = Y₁ - n

Z₂ = 2n

Where Z₂ is final partial pressure of CO₂

After reaction pressure at 100,0°C and 1,0L is 1,40 atm, that means:

1,40 atm = (Y₂ + Z₂)

1,40 atm = Y₁ - n + 2n

1,40atm = Y₁ + n

1,40 atm = Y₁ + X₁/2 <em>(2)</em>

Replacing (1) in (2)

1,40 atm = 1,50atm - X₁ + X₁/2

-0,10 atm = - X₁/2

<em>0,20 atm = X₁</em>.

As 2n = X₁; 2n =<em> Z₂ = 0,20 atm</em>

I hope it helps!

7 0
3 years ago
What assumptions do we make in order to use the Henderson-Hasselbalch equation? a. Both the weak acid and its conjugate base are
zepelin [54]

Answer:

The final and initial concentration of the acid and it's conjugate base are approximately equal, that is we use the weak acid approximation.

Explanation:

The Henderson-Hasselbalch is used to calculate the pH of a buffer solution. It depends on the weak acid approximation.

Since the weak acid ionizes only to a small extent, then we can say that [HA] ≈ [HA]i

Where [HA] = final concentration of the acid and [HA]i = initial concentration of the acid.

It also follows that [A^-] ≈ [A^-]i where [A^-] and[A^-]i refer to final and initial concentrations of the conjugate base hence the answer above.

7 0
3 years ago
MINUTES 15-20 IN THE VIDEO
STALIN [3.7K]

Answer:

NBPI NMB 4567IY3ERV-90668%^

Explanation:

NJOJFDSSEDFGHJMKNHBGVCDS4DR6TYUJN

4 0
3 years ago
Answer Question
vovangra [49]

Answer:

1. an object that has been intentionally placed into orbit. they are called Artificial Satalites.Satanists.

2. a huge collection of gas ,dust and billions of stars and their solar systems held together by gravity.

3. a large object such as Jupiter or Earth that orbits a star. planets are smaller than stars and they do not produce light.

4. July 16, 1969

7 0
3 years ago
Other questions:
  • Please can you assist me with this, been stuck for ages
    11·1 answer
  • el nitrogeno es un gas que se utiliza para conservar embriones,su temperatura es de -195,8ºc calcula esta temperatura en K y ºF
    6·1 answer
  • If a disease killed all the mice in a food web how would that effect owls
    5·2 answers
  • A solution is made containing 11.2 g of sodium sulfate per 95.0 g of water. What is the weigh / weight % or percent by mass of t
    8·1 answer
  • Someone please help me figure this out!
    12·1 answer
  • 7) Convert 8.34 x 10^-6 Kg to cg"
    8·1 answer
  • What is the iupac nomenclature of diethyl methane​
    6·1 answer
  • Research the Greenhouse effect and how it relates to heat transfer.
    13·1 answer
  • A gas mixture has a total pressure of 700 Torr and 0.5-mole fraction of nitrogen. The partial pressure of nitrogen is _______.
    11·2 answers
  • Can someone help me with this
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!