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
suter [353]
2 years ago
14

Although almost 80% of the atmosphere is made up of nitrogen gas, most living things

Chemistry
1 answer:
Bas_tet [7]2 years ago
6 0

Answer:

We don’t have the enzymes necessary to remove nitrogen from the atmosphere; we get our nitrogen from the food we eat. ^^

You might be interested in
A solution is prepared by mixing 25.0 g H2O and 25.0 g C2H5OH. Determine the mole fractions of each substance.
Veronika [31]

Answer:

Mole fraction H₂O → 0.72

Mole fraction C₂H₅OH → 0.28

Explanation:

By the mass of the two elements in the solution, we determine the moles of each:

25 g . 1 mol/ 18g = 1.39 moles of water (solute)

25 g . 1 mol / 46 g = 0.543 moles of ethanol (solvent)

Mole fraction solute = Moles of solute / Total moles

Mole fraction solvent = Moles of solvent / Total moles

Total moles = Moles of solute + Moles of solvent

1.39 moles of solute + 0.543 moles of solvent = 1.933 moles → Total moles

Mole fraction H₂O = 1.39 / 1.933 → 0.72

Mole fraction C₂H₅OH= 0.543 / 1.933 → 0.28

Remember that sum of mole fractions = 1

8 0
3 years ago
Read 2 more answers
A solution is one type of matter dissolved into a liquid or a ______
yarga [219]
Soliddddddddddddddddddd
4 0
2 years ago
Read 2 more answers
HELP PLZ
Vinvika [58]

Answer:

1). 19.9

2). 0

8 0
3 years ago
What evidence did Mendeleev use to decide that the alkali metals should be in the same group?
Bezzdna [24]

Answer:

they all reacted the same

Explanation:

4 0
2 years ago
Which of the following would be SI unit to use in measuring the temperature of hot liquid
Vinil7 [7]

The unit is the Kelvin, but most of the time 273 is subtracted from the Kelvin temperature and the new number is called "degrees Celsius".

4 0
3 years ago
Read 2 more answers
Other questions:
  • Please place correct one with statement. BRAINLIEST FOR BEST ANSWER // 60 POINTS !!
    9·2 answers
  • A chemistry student weighs out 0.0475g of sulfurous acid H2SO3, a diprotic acid, into a
    11·2 answers
  • C12H22O11 + 12O2 ---> 12CO2 + 11H2O
    15·1 answer
  • Describe the relationship between a hypothesis, a theory, and a natural law.
    10·1 answer
  • How many moles of gold are equivalent to 1.204 × 1024 atoms? 0.2 0.5 2 5
    9·2 answers
  • What is the hybridization of the central atom of each of the following molecules? a.) H2O b.) PBr5 c.) COCl2? Thank you so much!
    9·1 answer
  • A 1 liter solution contains 0.247 M nitrous acid and 0.329 M sodium nitrite. Addition of 0.271 moles of calcium hydroxide will:
    9·1 answer
  • Which of these is correct?
    6·1 answer
  • Which two notations represent isotopes of the same element?
    15·1 answer
  • What is the density of an object having a volume of 8 ml and a mass of 22 grams?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!