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
Verizon [17]
3 years ago
11

What is the atomic number of xenon, the fifith element in group 18?

Chemistry
1 answer:
Agata [3.3K]3 years ago
6 0
The atomic number is also the number of protons in the nucleus of an atom of a specific element, in this case Xenon. Xenon is represented on the periodic table as Xe. Find that and look at the number in the top center of the square for Xenon. In this case, the atomic number is 54.
You might be interested in
In the following reaction, what element is gaining mass?
vagabundo [1.1K]

Mg gained mass because it went from being a single element (on the reactant side) to being a molecule (on the product side).

8 0
3 years ago
A chemistry graduate student is given 500. mL of a 0.20 M chloroacetic acid (HCH2ClCO2) solution. Chloroacetic acid is a weak ac
zhenek [66]

Answer:

12 g of choloracetic acid

Explanation:

The buffer equilibrium is:

HCH₂ClCO₂ ⇄ CH₂ClCO₂⁻ + H⁺

pka= -log ka =

Ka: 1,3x10⁻³ = [CH₂ClCO₂⁻] [H⁺] / [HCH₂ClCO₂]

By Henderson-Hasselbalch equation:

pH = pka + log₁₀ [A⁻] / [HA]

3,01 = 2,89 + log₁₀ [A⁻] / [HA]

1,318 = [A⁻] / [HA]

As molar concentration of chloroacetic acid (HA) is 0,20M

[A⁻] = 0,26 mol/L

The volume is 500 mL ≡ 0,5 L

0,26mol/L × 0,5 L = 0,13 moles of chloroacetic acid. In grams:

0,13 mol × (94,5g / 1mol) = <em>12 g of choloracetic acid</em>

<em></em>

I hope it helps!

3 0
3 years ago
6
Butoxors [25]

Answer:

the 6 stands for the atomic number

the 12.01 stands for the atomic mass

6 0
3 years ago
Can energy transfer even if the objects are in the same temprature
Elina [12.6K]

Answer:

Yes

Explanation:

7 0
2 years ago
What reaction would take place if hot tugsten was surrounded by air?
Inessa05 [86]

The reaction that would take place if hot tungsten was surrounded by air is that it would react to the oxygen in air to form non conducting tungsten oxide and burns out instantly.

8 0
3 years ago
Other questions:
  • Almost. treating an acyl chloride with a grignard reagent tends to form (via two steps) an alcohol. what reagent forms the keton
    15·1 answer
  • 1. In addition to being necessary for respiration, _______ also provides UV radiation protection.
    13·1 answer
  • Angelo wants to develop a new series of pots and pans for use in cooking. Which property of metals should he be most concerned a
    5·1 answer
  • What is the pOH of a 7.5 x 10^-2 M H+ solution?
    12·1 answer
  • What is the [pb2+] in a solution made by adding 100 g of pbcl2(s) (mm = 278.1 g/mol) to a 5.4 m solution of nacl and allowing it
    5·1 answer
  • Can I have some help please on #2,4,5
    11·1 answer
  • A cube has a mass of 42 grams and a volume of 15 cubic centimeters. What is it’s density?
    9·1 answer
  • In the SI system of units, the mole is one of seven base units. It is frequently used in chemical calculations. However, a mole
    12·1 answer
  • What is the total pressure of a gas mixture containing partial pressures of
    7·1 answer
  • The Statue of Liberty is made of copper metal. Copper metal has the physical property of being orange in color. Over years of be
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!