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
shtirl [24]
2 years ago
12

Where do molecules humans need come from

Chemistry
1 answer:
grigory [225]2 years ago
6 0

Answer:

manila hahaha

i dont now

You might be interested in
Which of the following do you expect to have soil with the highest fertility
Andrej [43]
It would help if I could see the specific answer choices, but an environment that would have lots of oxygen, water, decaying organisms and sunlight would be the answer (ex. the forest or riverbed)
7 0
3 years ago
Why are significant figures rules for calculations more important in science than in math class?
inysia [295]

Answer:

The importance of significant figures

As stated before, it is important within the science fields that you are not more precise or accurate than the least accurate or precise number. In science, it is generally agreed upon that the last number digit in any figure is filled with uncertainty.

Explanation:

4 0
3 years ago
An 11.75 g sample of a common hydrate of cobalt(ii) chloride is heated. after heating, 9.25 g of anhydrous cobalt chloride remai
Irina-Kira [14]
Hydrated salts are when salt crystals have water molecules bound. Anhydrous salts are when the water has been removed.
mass of water removed = hydrated salt - anhydrate salt 
                                       = 11.75 g - 9.25 g = 2.50 g
number of water moles  = 2.50 g / 18 g/mol = 0.139 mol 
number of cobalt (II) chloride moles = 9.25 g / 130 g/mol = 0.0712 mol 
ratio of water moles to CoCl₂ moles - 0.139 mol / 0.0712 mol = 1.95 
rounded off 2 moles of water for every 1 mol of CoCl₂
formula - CoCl₂.2H₂O
name - Cobalt(II) chloride dihydrate
3 0
3 years ago
What is an electrolyte?
Mashcka [7]

Answer:

A substance that can conduct electricity in solution

8 0
3 years ago
When the pressure that a gas exerts on a sealed container changes from 1100 bar to 75.5 bar, the temperature changes from k to 2
Serjik [45]
Gay-Lussac's law gives the relationship between pressure and temperature of gas. For a fixed amount of gas, pressure is directly proportional to temperature at constant volume.
P/T = k
where P - pressure , T - temperature and k - constant
\frac{P1}{T1} =  \frac{P2}{T2}
parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation 
substituting the values in the equation 
\frac{1100 bar}{T}  =  \frac{75.5 bar}{298 K}
T = 4342 K
initial temperature was 4342 K
7 0
3 years ago
Other questions:
  • Which substance has the highest ignition​ temperature?
    14·1 answer
  • What is the net cell reaction for the iron-silver voltaic cell? express your answer as a chemical equation. hints?
    5·1 answer
  • Adding hydrogen atoms to an unsaturated fatty acid will make it __________.
    9·2 answers
  • Many tall buildings have a
    9·1 answer
  • A 0.4066 g sample of a pure soluble chloride compound is dissolved in water, and all of the chloride ion is precipitated as AgCl
    15·1 answer
  • For the reaction show below determine the rate law. H2SO3(aq) + 6I-(aq) + 4H+(aq) → S(s) + 2I3- + 3H2O (l) In the presence of a
    11·1 answer
  • The forces exerted on an object are shown.
    7·1 answer
  • Calculate the new pressure of a gas if the gas at 50 ˚C and 81.0 kPa is heated to 100 ˚C at a constant volume.
    6·1 answer
  • Which of the following is a unit of mass?
    10·1 answer
  • One drawback of x-ray scattering experinment.​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!