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
Lisa [10]
1 year ago
11

In the ground state an atom of which element has seven valence electrons.

Chemistry
1 answer:
Firdavs [7]1 year ago
7 0

Answer: Fluorine (see explanation)

Explanation:

Stream “Do We Have a Problem” by Nicki Minaj and Lil Baby coming out 2/4/22

You might be interested in
A sound wave travels from air that is at 24°C into air that is 15°C. The sound wave will _____.
FrozenT [24]
The sound wave will Slow Down
6 0
3 years ago
There are two isotopes of an unknown element, X-19 and X-21. The abundance of X-19 is 14.55%. A weighted average uses the percen
alekssr [168]

Answer:

2.765amu is the contribution of the X-19 isotope to the weighted average

Explanation:

The average molar mass is defined as the sum of the molar mass of each isotope times its abundance. For the unknown element X that has 2 isotopes the weighted average is defined as:

X = Mass X-19 * Abundance X-19 + MassX-21 * Abundance X-21

The contribution of the X-19 isotope is its mass (19.00 amu) times its abundance (14.55% = 0.1455). That is:

19.00amu * 0.1455 =

2.765amu is the contribution of the X-19 isotope to the weighted average

8 0
2 years ago
a solution with a transmittance of 0.44 is analyzed in a spectrophotometer with 6% stray light. calculate the absorbance reporte
IgorLugansk [536]

The absorbance reported by the defective instrument was 0.3933.

Absorbance A = - log₁₀ T

Tm = transmittance measured by spectrophotometer

Tm = 0.44

Absorbance reported in this equipment = -log₁₀ (0.44) = 0.35654

True absorbance can be calculated by true transmittance, Tm = T+S(α-T)

S = fraction of stray light = 6%= 6/100 = 0.06

α= 1, ideal case

T = true transmittance of the sample

Tm = T+S(α-T)

now, T= Tm-S/ 1-S = 0.44-0.06/ 1-0.06 = 0.404233

therefore, actual reading measured is A = -log₁₀ T = -log₁₀ (0.404233)

i.e; 0.3933

To know more about transmittance click here:

brainly.com/question/17088180

#SPJ4

3 0
1 year ago
How does the sun heat<br> the side of the Earth<br> facing away from it?
Evgen [1.6K]

Answer:

The sun radiates energy in all directions.

Explanation:

Most of it dissipates into space, but the tiny fraction of the sun's energy that reaches Earth is enough to heat the planet and drive the global weather system by warming the atmosphere and oceans

3 0
3 years ago
Which molecular compound could be dinitrogen monoxide?
kari74 [83]
It could be Nitrous oxide


3 0
2 years ago
Other questions:
  • Write the chemical symbol for three different atoms or atomic cations with 22 electrons
    5·1 answer
  • Which practice does the Montreal Protocol aim to reduce?
    8·2 answers
  • Which of the following is not a step in the conversion 1.3 Dam cubed to liters
    13·1 answer
  • Which is one way that topographic maps are different from other maps?
    12·2 answers
  • To separate a mixture of iron filings and salt, the most efficient method would be
    6·1 answer
  • What is the name of this molecule?
    6·2 answers
  • A product of homolytic fission can never be
    12·1 answer
  • Most seeds germinate and start to grow in the dark. Why don’t they need light right away?
    15·1 answer
  • Which compound is insoluble in water?
    14·2 answers
  • Question 8 (3 points) What is the formula for Silver (III) sulfide? O Ag2(SO4)3 O Ag3(SO4)2 Ag3S2 Ag2S3​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!