All categories

3 years ago

Why can’t there be a temperature lower than absolute zero

1 answer:

7 0

Atoms cannot physically get more compact (temperature lowering increases the space between atoms) At absolute zero, the atoms are as physically close together as allowed by the physical laws governing it.

You might be interested in

An ionic compound is found to contain 10.9% magnesium, 31.8% chlorine and 57.3% oxygen. What is the empirical formula for this c

Luda [366]

Mg 10.9g/24.31=0.018/0.018=1
Cl 31.8g/35.45=0.897/0.018=49.83=50
O 57.3g/16.00=3.581/0.018=198.94=199

empirical formula=MgCl50O199

I think it's right

7 0

3 years ago

Read 2 more answers

5. Can you determine the number of neutrons in the nucleus of an atom by looking at the element's average atomic mass and the at

Shkiper50 [21]

Answer:

No you can't

Explanation:

The atomic number is the amount of protons in element's nucleus, that's one reason why. The second reason is that the atomic mass is protons and neutrons combined, their estimated value, which doesn't show how much neutrons are in an element. It does show combined, but not specifically neutrons

7 0

3 years ago

At high temperatures, carbon reacts with O2 to produce CO as follows: C(s) O2(g) 2CO(g). When 0.350 mol of O2 and excess carbon

777dan777 [17]

Answer:

Value of $K_{c}$ is 0.090.

Explanation:

Initial molarity of $O_{2}$ = $\frac{0.350}{5.00}M$ = 0.0700 M

Construct an ICE table corresponding to the combustion reaction of carbon to determine $K_{c}$

$C(s)+O_{2}(g)\rightarrow 2CO(g)$

I (M): - 0.0700 0

C (M): - -x +2x

E (M): - 0.0700-x 2x

So, $K_{c}=\frac{[CO]^{2}}{[O_{2}]}$ , where [CO] and $[O_{2}]$ represents equilibrium concentration of CO and $O_{2}$ respectively.

Here, $[CO]=2x=0.060$

⇒x = 0.030

So, $[O_{2}]$ = 0.0700-x = (0.0700-0.030) = 0.040

Hence, $K_{c}=\frac{(0.060)^{2}}{0.040}=0.090$

4 0

4 years ago

Calculate the wavelength of the first line in the lymen series of hydrogen spectrum

Natali [406]

Since the electron is de-exited from 1(st) exited state (i.e n=2) to ground state (i.e n=1) for first line of Lyman series. Since the atomic number of Hydrogen is 1. λ = 4/3⋅912 A. 1/R = 912 A

3 0

3 years ago

What is the molar mass of magnesium

mina [271]

Hey there!

The molar mass of magnesium is 24.305 grams.

The molar mass of an element is the same as the atomic mass of an element, but measured in grams.

It's on the periodic table underneath the element symbol.

Hope this helps!

3 0

3 years ago