How many teaspoons equal one tablespoon?

How many sulfur atoms are there in 3.90 mol of sulfur?

Ilya [14]

In a mole of anything, there are 6.023 x 10^23 units. So, in 3.9 moles of sulfur, there are 3.9 * 6.023 x 10^23 = 23 x 10^23 = 2.3 x 10^24 atoms (keeping only 2 sig figs). Hope I help!!

6 0

2 years ago

The major elements of organic molecules is carbon identify three other carbon is normally bonded to

arsen [322]

Carbon normally bonded to Hydrogen, Nitrogen, Oxygen

4 0

3 years ago

Which of the following statements is false? Check all that apply. Gases are far more compressible than liquids The volume occupi

Sergio039 [100]

Answer:

The false statement is: 3. Because liquid water and liquid carbon tetrachloride do not mix, neither do their vapors

Explanation:

Gas is a state of matter, that has less density than liquids and solids. The gaseous particles have low intermolecular forces and thus they can move freely.

It is a very compressible fluid that has no fixed shape. Gas occupies the whole container in which it is stored, thus taking the shape of the container. Therefore, the volume of the gas is equal to the volume of the container.

Polar liquid like water (H₂O) and nonpolar liquid like carbon tetrachloride, are immiscible. However, in the gaseous state, their vapors form a homogeneous mixture.

5 0

3 years ago

A vessel contained N2, Ar, He, and Ne. The total pressure in the vessel was 987 torr. The partial pressures of nitrogen, argon,

xz_007 [3.2K]

Answer:

The partial pressure of neon in the vessel was 239 torr.

Explanation:

In all cases involving gas mixtures, the total gas pressure is related to the partial pressures, that is, the pressures of the individual gaseous components of the mixture. Put simply, the partial pressure of a gas is the pressure it exerts on a mixture of gases.

Dalton's law states that the total pressure of a mixture of gases is equal to the sum of the pressures that each gas would exert if it were alone. Then:

PT= P1 + P2 + P3 + P4…+ Pn

where n is the amount of gases present in the mixture.

In this case:

PT=PN₂ + PAr + PHe + PNe

where:

PT= 987 torr
PN₂= 44 torr
PAr= 486 torr
PHe= 218 torr
PNe= ?

Replacing:

987 torr= 44 torr + 486 torr + 218 torr + PNe

Solving:

987 torr= 748 torr + PNe

PNe= 987 torr - 748 torr

PNe= 239 torr

The partial pressure of neon in the vessel was 239 torr.

4 0

3 years ago

What is the solubility of La(IO₃)₃ in a solution that contains 0.100 M IO₃⁻ ions? (Ksp of La(IO₃)₃ is 7.5 × 10⁻¹²)

love history [14]

Solution and Explanation:

[La3+] = 0.1 M

At the equilibrium:

La(IO3)3 <----> La3+ + 3 IO3-

0.1 +s 3s

$\mathrm{Ksp}=[\mathrm{La} 3+][\mathrm{IO} 3-]^{\wedge} 3$

$7.5 * 10^{\wedge}-12=(0.1+s) *(3 s)^{\wedge} 3$

Since Ksp is small, s can be ignored as compared to the 0.1

The above shown expression thus becomes:

$7.5 * 10 \wedge-12=(0.1) *(3 s) \wedge 3$

$7.5 * 10^{\wedge}-12=0.1 * 27(\mathrm{s})^{\wedge} 3$

$s=1.406 * 10^{\wedge}-4 \mathrm{M}$

Answer: 1.4*10^-4 M

3 0

2 years ago