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kozerog [31]
3 years ago
11

Who developed an equation to better understand energy levels in an atom

Chemistry
2 answers:
nata0808 [166]3 years ago
8 0

Answer:

Niels Bohr

Explanation:

Savatey [412]3 years ago
6 0

for some reason, Brainly wouldn't let me enter my answer. so heres a screenshot of it.

Hope this helps!

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A block of wood has a volume of 60 cm^3 and a mass of 240 grams calculate its density.
AlekseyPX

Answer:

4 g/cm³

Explanation:

Volume(V) = 60 cm³

mass (m) = 240 gm

density (d) = ?

We know density is defined as mass per unit volume so

d = m / v

= 240 / 60

= 4 g/cm³

Hope it will help

3 0
3 years ago
If 3. 5 grams of ni are reacted with excess oxygen to form nickel oxide unser standard state conditions, what is the entropy cha
Mashutka [201]

Entropy Change is the measure of the randomness of the thermodynamic system. The entropy change for the reaction is -49.3 J/K.

<h3>What is the change in entropy?</h3>

Entropy change is the ratio of the heat transfer of the system to the absolute temperature of the system.

The entropy of nickel = 182.1 J/mol. K

The entropy of oxygen = 205.0 J/mol. K

The entropy of nickel oxide = 37.99 J/mol. K

Entropy change is calculated as:

\begin{aligned}\Delta \rm S &= 2(37.99)-2(182.1)-205\\\\&= 75.98 - 364.2 - 205\\\\&= -493.22 \end{aligned}

Therefore, -49.3 J/K is the entropy change.

Learn more about entropy change here:

brainly.com/question/1301642

#SPJ4

8 0
2 years ago
The metal zirconium becomes superconducting at temperatures below 3.4000K.
dybincka [34]

Answer:

-269.75 degrees Celsius

Explanation:

7 0
3 years ago
What is the main type of weathering in deserts? weathering by organic acids chemical weathering physical weathering
Solnce55 [7]

Answer:

chemical

Explanation:

Chemical weathering, which is the decomposition of a rock by the alteration of its chemical composition.

5 0
3 years ago
Which salt is produced by the neutralization of sodium hydroxide with sulfuric acid?
NISA [10]
NaOH+H2SO4=NAHSO4+H2O
4 0
3 years ago
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