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
Slav-nsk [51]
3 years ago
9

Which temperatures originally represented the fixed points Celsius temperature scale?

Chemistry
1 answer:
frez [133]3 years ago
8 0

Answer:Since 1743 the Celsius scale has been based on 0 °C for the freezing point of water and 100 °C for the boiling point of water at 1 atm pressure. Prior to 1743 the values were reversed (i.e. the boiling point was 0 degrees and the freezing point was 100 degrees).

Explanation: i no it

You might be interested in
1. The attraction between the hydrogen atom in one water molecule and the oxygen molecule in another is
Rudik [331]

Answer:

d

ionic bond is formed when there is transfer of electrons and is composed of a positive cation and a negative anion

4 0
3 years ago
What does it mean if a solution is a "weak acid "? Strong acid? Give logical ph values for each
galina1969 [7]

Answer:

A weak acid is an acid that partially dissociates into its ions in an aqueous solution or water. In contrast, a strong acid fully dissociates into its ions in water. At the same concentration, weak acids have a higher pH value than strong acids.

Explanation:

:)

5 0
3 years ago
The Greeks were the first to use the term _____. atom electron neutron proton
kotegsom [21]
I think the correct answer from the choices listed above is the first option. The Greeks were the first to use the term atom. In 450 BCE, Democritus coined the term átomos which means "uncuttable" or "the smallest indivisible particle of matter". 
6 0
3 years ago
Read 2 more answers
write chemical equations of photosynthesis and cellular respiration and show if carbon is oxidized or reduced
irina [24]

Answer:

Explanation:

  • The chemical reaction for cellular respiration  is as follows -

C₆H₁₂O₆ ( Glucose ) + 6 O₂ ( Oxygen ) --------------> 6CO₂  ( Carbon dioxide ) +  6H₂O ( Water ) + 38 ATP molecules ( Energy ) .

This is an example of oxidation of carbon .

  • The chemical reaction for photosynthesis  is as follows -

6CO₂  ( Carbon dioxide ) + 6H₂O ( Water ) --------------> C₆H₁₂O₆( Glucose ) + 6 O₂  ( Oxygen ).

This is an example of reduction of carbon .

6 0
3 years ago
Which is a way that biotechnology has Not helped society?
Trava [24]
New, stronger bacteria have evolved that are resistant to antibiotics.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Aerosol cans contain a written warning not to subject the can to high temperatures or incinerate. Suppose an aerosol can is heat
    13·2 answers
  • Which of the following have a neutral charge
    8·1 answer
  • Calculate the ΔH o for the reaction: Fe3+(aq) + 3OH−(aq) → Fe(OH)3(s) ΔH o = kJ/mol Substance ΔH o f (kJ/mol) ΔG o f (kJ/mol) S
    15·1 answer
  • Determine the mass of 5.2 x 10 power of 21 molecules of propanol C3H7OH(l), on grams.
    8·1 answer
  • All forms of energy can be converted into any other form. TrueFalse
    13·2 answers
  • PLEASE HELP
    12·2 answers
  • All of these are characteristics of moon rocks except:
    15·1 answer
  • 1. Determine the volume of SO2 (at STP) formed from the reaction of 96.7 mol FeS2 and 55.0 L of O2 at 358 K and 1.20 atm.
    13·1 answer
  • How many grams are there in a 3.5 moles of oxygen
    14·1 answer
  • Is silicon a better conductor of electricity than sulfur
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!