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
morpeh [17]
2 years ago
13

It is more logical to believe that the complex life sustaining processes of the sun-Earth system were created because they Choos

e... on one another.
A. rely
B. orbit
C. breathe
D. spin
Chemistry
1 answer:
Leokris [45]2 years ago
3 0
They (A. Rely) on eachother.
You might be interested in
3. 79,789kJ = (293k) (377kJ)
KatRina [158]

the anwser would most likely be j=0

5 0
3 years ago
I need help I know it isnt A
inna [77]
It is B. Thank you later please and do good on the test!
5 0
2 years ago
Read 2 more answers
One reaction that destroys o3 molecules in the stratosphere is
Sidana [21]
One reaction that destroys o3 molecules in the stratosphere is when an ozone molecule combines with an oxygen atom to form two oxygen molecules, or through certain chemical reactions involving molecules containing hydrogen, nitrogen, chlorine, or bromine atoms. The atmosphere maintains a natural balance between ozone formation and destruction.
7 0
3 years ago
How many moles of NaCl are needed to make 10.0L of a 5 M solution of<br> Salt water?*
vesna_86 [32]

Answer: 50 mol

Explanation:

Molarity=\frac{Moles -of -solute}{liters -of -solution}

M=\frac{mol}{L}

mol=M*L

mol=5*10\\mol=50mol

3 0
3 years ago
A 0.0000792 M sample of Compound X in a solvent has an absorbance of 0.341 at 528 nm in a 1.000-cm cuvet. The solvent alone has
natima [27]

Answer:

a) a = 3485 M⁻¹cm⁻¹

b) C = 0,000127 M

Explanation:

Lambert-Beer law says that there is a linear relationship between absorbance and concentration of a chemical substance. The formula is:

A = a×b×C

Where A is absorbance, a is molar absorptivity, b is path length and C is concentration.

a) In the problem Concentration is 0.0000792 M, b is 1,000cm and Absorbance is absorbance of sample-absorbance of blank: 0,341-0,065 = 0,276

Replacing:

0,276 = a×1,000cm×0,0000792M

<em>a = 3485 M⁻¹cm⁻¹</em>

b) As the experiment consist in the same compound in the same solvent, the molar absorptivity will be the same, a = 3485 M⁻¹cm⁻¹, path length will be 1,000cm and absorbance: 0,508-0,065 = 0,443

Replacing:

0,443 = 3485 M⁻¹cm⁻¹×1,000cm×C

<em>C = 0,000127 M </em>

<em></em>

I hope it helps!

8 0
2 years ago
Other questions:
  • If we view a 1st quarter moon tonight , how many weeks will pass before we view the next new moon?
    12·2 answers
  • How do I figure the electronegativity difference of sugar C^12H^22O^11?
    5·1 answer
  • The chemical bonds of carbohydrates and lipids have high potential energy because:
    14·1 answer
  • Three most common alkali metals include:
    13·2 answers
  • What chemicals must be cycled through a Martian environment in order for the planet to be habitable for life? Describe how scien
    12·1 answer
  • How many moles of iron in a sample that contains 7.91×10^23 atoms of iron?
    11·1 answer
  • I don't know if this is a chemistry question but I need help its a science question from what I know!
    8·1 answer
  • According to the following reaction, how many grams of sulfur are formed when 37.4 g of water are formed?
    12·1 answer
  • Please someone help or tell me the answer for number 2 its a quiz grade
    10·1 answer
  • Which of the following is true about most predators? (Select all that apply.)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!