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
Law Incorporation [45]
3 years ago
8

NEED NOW!

Chemistry
2 answers:
Ann [662]3 years ago
7 0

A. a Community - apex



vfiekz [6]3 years ago
6 0
It's either genus or species. I'd go with Genus
You might be interested in
What states of matter were present when pure water reached its boiling point
maxonik [38]
I believe it’s evaporation?
7 0
3 years ago
What is a pollinator?
AlexFokin [52]

It's A: an animal that transfers pollen from flower to flower.

Good Luck!

8 0
3 years ago
Read 2 more answers
| A solution containing 4.48 ppm KMnO4 exhibits
Artist 52 [7]

Answer:

Molar absorptivity or molar extinction co-effecient = 2120.14 cm⁻¹M⁻¹

Explanation:

First convert Concentration from ppm inM or mol/l

⇒ Molar mass of KMnO₄ = 158.03 g

⇒ 4.48 ppm = 4.48 mg/l = 4.48 x 10⁻³ g/l

⇒ Molarity = \frac{4.48 X10^{-3} }{158.03X 1(lit)} = 2.83 x 10⁻⁵ molar

Absorbance (A) = - log(T)     ( T = % transmittance)

                          = - log(0.859)

                          = 0.06

According to Lambert Beer's law

     

                 ε = \frac{A}{C X l}

      or,      ε = \frac{0.06}{2.83 X 10^{-5}X1 cm }

      or,      ε = 2120.14 cm⁻¹M⁻¹

Where

    ε = Molar absorptivity

    A = absorbance

    C = Molar concentration of KMnO₄ solution

     l = length  

6 0
3 years ago
Determine the number of protons, neutrons and electrons in each of the following:
Kisachek [45]
Cu+ p=29 e=28 n=34
S2- p=16 e=18 n=16
Pb4+ p=82 e=78 p=125

I hope i did it right :))
5 0
2 years ago
Which tool would give the most precise measurement of 15 milliliters of water
vagabundo [1.1K]

A graduated cylinder

_________________

o0o0o0o0o0o0o0o0o0

6 0
2 years ago
Other questions:
  • Which of the following is true about the frequencies of electromagnetic radiation
    11·1 answer
  • Find the ΔG° for the combustion of half a mole of glucose C6H12O6 in kJ
    14·1 answer
  • What happens to a reducing agent during a redox reaction?
    11·1 answer
  • A solid ice cube absorbs 151.7 J of energy as it warms from 0.00°C to 4.70°C. What is the mass of the ice cube?
    15·1 answer
  • Which of the following balances has the least uncertainty? (PSS.1)
    13·1 answer
  • Please help me with this science question!! 20 points ​
    8·1 answer
  • What is the pH of a 0.235 M Ba(OH)2 solution?
    8·1 answer
  • How many moles are present in 2.95 x1024 molecules of water (H20)
    12·1 answer
  • Some antacid tables contain aluminum hydroxide. The aluminum hydroxide reacts with stomach acid according to the equation: Al(OH
    11·1 answer
  • The group of elements that make up the smallest percentage of the periodic table are the
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!