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
Olenka [21]
3 years ago
5

1.004 mol Arsenic is how many atoms?

Chemistry
1 answer:
DochEvi [55]3 years ago
5 0

Answer:  6.047\times 10^{23} atoms in 1.004 mol of arsenic

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the atoms, we use the equation:

\text{Number of moles}=\frac{\text{Given atoms}}{\text {avogadro's number}}

1.004=\frac{x}{6.023\times 10^{23}}

x=1.004\times 6.023\times 10^{23}=6.047\times 10^{23}

Thus there are 6.047\times 10^{23} atoms in 1.004 mol of arsenic

You might be interested in
How do ecosystems respond to natural disasters such as fires and floods?
Dafna11 [192]

Answer:

How do ecosystems respond to natural disasters such as fires and floods :

Explanation:

They recover in stages, gradually returning to the original system. … She plans to create various physical and biological disturbances in the ecosystem to see how populations change over time.

3 0
3 years ago
From the Henderson-Hasselbalch equation, explain how the ratio [Al/[HA] changes with changing pH
Kryger [21]

Answer:

The ratio [A-]/[HA] increase when the pH increase and the ratio decrease when the pH decrease.

Explanation:

Every weak acid or base is at equilibrium with its conjugate base or acid respectively when it is dissolved in water.

HA + H_{2}O ⇄ A^{-} + H_{3}O^{+}

This equilibrium depends on the molecule and it acidic constant (Ka). The Henderson-Hasselbalch equation,

pH = pKa + Log \frac{[A^{-}]}{[HA]}

shows the dependency between the pH of the solution, the pKa and the concentration of the species. If the pH decreases the concentration of protons will increase and the ratio between A- and AH will decrease. Instead, if the pH increases the concentration of protons will decreases and the ratio between A- and AH will increase.

5 0
4 years ago
A good conductor of heat
MAVERICK [17]
Metal is a conductor of heat
8 0
3 years ago
The standard cell potential Ec for the reduction of silver ions with elemental copper is 0.46V at 25 degrees celsius. calculate
Cloud [144]

Answer : The \Delta G for this reaction is, -88780 J/mole.

Solution :

The balanced cell reaction will be,  

Cu(s)+2Ag^+(aq)\rightarrow Cu^{2+}(aq)+2Ag(s)

Here, magnesium (Cu) undergoes oxidation by loss of electrons, thus act as anode. silver (Ag) undergoes reduction by gain of electrons and thus act as cathode.

The half oxidation-reduction reaction will be :

Oxidation : Cu\rightarrow Cu^{2+}+2e^-

Reduction : 2Ag^++2e^-\rightarrow 2Ag

Now we have to calculate the Gibbs free energy.

Formula used :

\Delta G^o=-nFE^o

where,

\Delta G^o = Gibbs free energy = ?

n = number of electrons to balance the reaction = 2

F = Faraday constant = 96500 C/mole

E^o = standard e.m.f of cell = 0.46 V

Now put all the given values in this formula, we get the Gibbs free energy.

\Delta G^o=-(2\times 96500\times 0.46)=-88780J/mole

Therefore, the \Delta G for this reaction is, -88780 J/mole.

7 0
4 years ago
Boyle's Law states that when a sample of gas is compressed at a constant temperature, the pressure P and volume V satisfy the eq
ad-work [718]

Answer:

-75 cm^3/min

Explanation:

Given from Boyle's law;

PV=C

From product rule;

VdP/dt + PdV/dt = dC/dt

but dC/dt = 0, V= 500 cm^3, P= 200kPa, dP= 30kPa/min

PdV/dt = dC/dt - VdP/dt

dV/dt = dC/dt - VdP/dt/ P

substituting values;

dV/dt = 0 - (500 * 30)/200

dV/dt = -75 cm^3/min

5 0
3 years ago
Other questions:
  • A yield of NH3 of approximately 98% can be obtained at 200°C and 1,000 atmospheres of pressure.
    12·1 answer
  • How many atoms does CaF2 have​
    7·1 answer
  • What kind of Romance Novels would kids between the age of 14-18 read. Whether it is an actual book or a book made on sites like
    15·1 answer
  • How many periods does the modern periodic table have?
    10·1 answer
  • A 2-kg bowling ball is 2.5 meters off the ground on a post when it falls. Just before it reaches the ground, it is traveling 7 m
    15·2 answers
  • What is the answer? Please
    5·2 answers
  •  how are subscripts determine the formula of ionic and covalent compounds ?
    14·1 answer
  • In UV region measurements, the üsed cell must be Oa. Plastic cell O b. KBr cell C. Fused silica cell d. Glass cell​
    10·1 answer
  • Which of the following activities is most likely to result in nutrient pollution?
    12·1 answer
  • How many grams of h2 will be produced from 12 grams of mg?.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!