Which of the following has no electrons? Use a periodic table.

The first season of Stranger Things consists of eight episodes. Each episode is approximately

OLga [1]

Answer:

You will be watching for 6 hours

Explanation:

We will have 45 x 8 which will give us 360 then we divide it by 60 which will give us 6.

8 0

3 years ago

A box contains 104 gas molecules, 2500 of nitrogen and 7500 of argon in thermal equilibrium. The molecular weight of N2 is 28g/m

LekaFEV [45]

Answer : The temperature of this gas will be, 206.9 K

Explanation :

The expression for the kinetic energy per molecule of monoatomic gas (argon) is:

$K.E_{argon}=n_{argon}\times \frac{3}{2}\times K_BT$ ...........(1)

The expression for the kinetic energy per molecule of diatomic gas (nitrogen gas) is:

$K.E_{nitrogen}=n_{nitrogen}\times \frac{5}{2}\times K_BT$ .............(2)

The total kinetic energy of the molecule will be,

$K.E_{Total}=K.E_{argon}+K.E_{nitrogen}$

Now put all the expression in this, we get:

$K.E_{Total}=(7500)\times \frac{3}{2}\times K_BT+(2500)\times \frac{5}{2}\times K_BT$

$T=\frac{K.E}{17500\times K_B}$

Now put all the given values in this expression, we get:

$T=\frac{5\times 10^{-17}J}{17500\times (1.381\times 10^{-23}J/K)}$

$T=206.9K$

Therefore, the temperature of this gas will be, 206.9 K

8 0

4 years ago

_______ oxides are oxides of certain non metals

kogti [31]

acidic in naturenature

Generally, Oxides of non-metals are acidic in nature. When non-metals are reacted with water it forms an acidic solution. The common oxides of Sulphur, Selenium, and Bromine are strongly acidic.

5 0

2 years ago

1) what causes the magnetic fields on the sun?

mr Goodwill [35]

1) flows of hot plasma in the convection zone
2) dark spots that appear sometimes because of concentrations of magnetic field flux
3) "a brief eruption of intense high-energy radiation from the sun's surface"
4) gas extended out from the corona but is attached to the sun and can reach great distances
5) large area in cocrona which is less dense and has cooler temperature they occur when "the Sun's magnetic field is open to interplanetary space"

3 0

4 years ago

Looking at the stoichiometry of the reaction (see the lab manual), how many moles kmno4 must have been delivered by the buret to

timofeeve [1]

8H⁺ + 5Fe²⁺ + MnO₄⁻ ⇒ Mn²⁺ + 5Fe³⁺ + 4H₂O

According to the reaction, Fe²⁺ and MnO4⁻ have following stoichiometric ratio:

n(Fe²⁺) : n(MnO4⁻) = 5 : 1

n(MnO4⁻) = n(Fe²⁺) / 5

So, for each mole of Fe²⁺ it is needed 1/5 moles of MnO4⁻.

7 0

3 years ago