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
eimsori [14]
3 years ago
5

3 A specific amount of energy is emitted when excited electrons in an atom in a sample of an element return to the ground state.

This emitted energy can be used to determine the(1) mass of the sample
(2) volume of the sample
(3) identity of the element
(4) number of moles of the element
Chemistry
1 answer:
Masja [62]3 years ago
5 0
When a specific amount of energy is emitted when excited electrons in an atom in a sample of an element return to the ground state, this emitted energy can
<span>be used to determine the "identity of the element".</span>
You might be interested in
How many millimeters of 1.58 M HCl are needed to react completely with 23.2 g of NaHCO3
KonstantinChe [14]
<span>So we need 0.276 moles of HCl to react. Your concentration is given in moles/liter so 0.276/1.58 = 0.174 liters needed or 174 milliliters</span>
8 0
3 years ago
Read 2 more answers
How does the reaction, A + BC ⇌ AB + C, differ from the reaction, N2 + 3H2 ⇌ 2NH3 + energy, by which ammonia is synthesized?
-BARSIC- [3]

Answer:

N₂+3H₂ ⇄2NH₃ is a thermochemical reaction whereas A+BC⇄AB is not.

A+BC⇄AB is a reaction of pure a element with a compound while N₂+3H₂ ⇄2NH₃ is a reaction between two pure elements.

Explanation:

Let A+BC⇄AB be equation i and N₂+3H₂ ⇄2NH₃ be equation ii.

The two reactions differ in that ii is a thermo-chemical reaction whereas i is not. This is because energy is included in reaction ii but not included in reaction i.

Also i is a reaction of pure a element with a compound while ii is a reaction between two pure elements. The compound is BC while the pure element is A.

6 0
3 years ago
Read 2 more answers
Two identical 732.0 L tanks each contain 212.0 g of gas at 293 K, with neon in one tank and nitrogen in the other. Based on the
Vladimir [108]

Answer: (a) Neon, Nitrogen; (b) Neon, Nitrogen; (c) Neon is lower than Nitrogen; (d) It doesn't affect;

Explanation: The kinetic-molecular theory studies the behavior of particles under pre-determinated situation. In cases of gases, the particles moving around colliding with each other and the walls of the container, without loss of energy. In the case in question, all the parameters are the same (same temperature, volume and pressure), except for the gases, which has different molar masses. In this sense, Neon has lower average speed due to its molar mass being higher, which means, its particles moves slower for being heavier. Related to pressure, as velocity is lower, it collides less with the walls of the tank, and so pressure is lower. For density, it doesn't affect the behavior of the system nor the kinetic energy.

7 0
3 years ago
Dogs use the same glycolysis and cellular processes as humans use to produce ATP. A young dog has never had much energy. He is b
scZoUnD [109]

Answer:

<h2>Dog's mitochondria lack the transport protein that transport  pyruvate ( end product of glycolysis) across the outer mitochondrial  membrane .</h2>

Explanation:

1. As given here that dog's mitochondria can use only fatty acids and also  amino acids for their respiration, and  as compared to others, Dong's cell produce more lactate then normal,  this indicate that his mitochondrial membrane is different then others.  

2. The aerobic phases of cellular respiration in eukaryotes occur within  mitochondria. These aerobic phases are the TCA Cycle and the electron transport chain. Glycolysis occurs in the cytoplasm and the products of glycolysis enter into the mitochondria to continue cellular respiration.

3. These condition shows that dog's mitochondria lack the transport protein of mitochondria that moves pyruvate across the outer mitochondrial  membrane.

3 0
3 years ago
How many protons and electrons does oxygen have? What about hydrogen? Draw a model of each atom if that helps you think about th
Tems11 [23]

Answer:

Two electrons fit in the first shell out from the nucleus and eight fit in the second. Every element with more protons than the two of Helium needs to work on shells outside the first one. one you get to ten, you have filled the first two shells.

In a water molecule, oxygen forms one covalent bond with EACH of TWO hydrogen atoms. As a result, the oxygen atom has a stable arrangement of 8 valence electrons. Each hydrogen atom forms only one bond because it needs only two electrons to be stable.

5 0
2 years ago
Other questions:
  • In an endothermic reaction, heat is absorbed from the surroundings. How does this affect entropy?
    5·2 answers
  • Define Aqua regia and write a short note on it
    14·1 answer
  • Bromination of (Z)?3?hexene yields racemic 3,4?dibromohexane. Provide a detailed mechanism for formation of the (3S,4S)?enantiom
    12·1 answer
  • Create a story and describe the motion (in meters) of an object that has traveled a distance but has no displacement. Need Help
    15·1 answer
  • If 1.240 g of carbon dioxide dissolves in 1.01 l of water at 755 mm hg, what quantity of carbon dioxide (in grams) will dissolve
    11·2 answers
  • How many moles of oxygen react with 7.3 mole of iron?<br>4Fe + 302 → 2Fe2O3​
    11·1 answer
  • When a hot metal is dropped into a sample of water, the water___ temperature
    5·1 answer
  • 1. If 2 moles of hydrogen combine with one mole of oxygen, how many moles of water are<br> produced?
    13·1 answer
  • Use the drop-down menus to complete each statement.
    9·1 answer
  • The molar mass of water (H2O) is 18. 0 g/mol. A sample of water has a mass of 18. 0 g. How many moles of water are contained in
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!