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
yanalaym [24]
3 years ago
5

What chemical is discovered to react to light in the 1700s?

Chemistry
2 answers:
WARRIOR [948]3 years ago
5 0
When Scheele discovered oxygen he called it "fire air" as it supported combustion. The answer is oxygen.
leonid [27]3 years ago
4 0
Oxygen or maybe hydrogen
You might be interested in
Which of the following shows a coefficient?
rosijanka [135]

Answer:

my answer is b oti d I am not sure

6 0
2 years ago
Which of these properties is physical property of aluminum
Brrunno [24]

Answer:

B. Aluminum is a good conductor of heat

Explanation:

Physical properties are usually those that can be observed using our senses such as color, luster, freezing point, boiling point, melting point, density, hardness and odor. The Physical Properties of Aluminum are as follows: Color : Silvery-white with a bluish tint.

5 0
3 years ago
Read 2 more answers
A hydrogen atom requires a minimum energy of 2.18×10^-18 J atom to remove an electron from its ground state level. Determine whe
frosja888 [35]
Just find the energy of the <span>blueviolet light with a wavelength of 434.0 nm using the formula:

E  = hc / lambda

E = energy
c= speed of light =  3 x 10^8 m/s
h = planck's constant =  6.6 x 10^{-34}  m^2 kg / s
lambda =  434 nm =  434 x 10^{-9} m

Putting these values (with appropriate units) in the above formula :

we get:  Energy, E = 4.5 x 10^{-19} J

E = 0.45 x 10^{-18} J

Now, the </span>minimum energy is 2.18×10^-{18} J but our energy is 0.45 x 10^{-18} J which is less.
<span>Means the electron will not be removed

</span>
5 0
3 years ago
What does amoeba use to move and ingest prey?
melomori [17]
The cytoplasm slides and forms a pseudopodium in front to move the cell forwards. 
7 0
3 years ago
Suppose oxygen was much less electronegative than it is, so that hydrogen-oxygen bonds were much less polar and hydrogen bonds c
spayn [35]
Water would have a much lower boiling point much like its other hydrides and it would loss its ability to dissolve polar substances plus it couldn't form water columns so no more cohesion between water molecules
6 0
3 years ago
Read 2 more answers
Other questions:
  • If 25.0 ml of seawater has a mass of 25.895 g and contains 1.295 g of solute, what is the mass/mass percent concentration of sol
    12·1 answer
  • How many protons do calcium have
    6·2 answers
  • Mixtures of benzene and cyclohexane exhibit ideal behavior. A solution was created containing 1.5 moles of liquid benzene and 2.
    5·1 answer
  • A 3.301 mass % aqueous solution of potassium hydroxide has a density of 1.05 g/mL. Calculate the molality of the solution. Give
    14·1 answer
  • In an atom, the first energy level can hold
    14·1 answer
  • Which element is in the same family as Chlorine (Cl) and Fluorine (F)?
    5·2 answers
  • __M+__Q2-----&gt;___MQ3
    11·2 answers
  • 3. If all the waves were measured for a period of 5 seconds, which wave had the highest frequency?
    9·1 answer
  • Which is the BEST definition for a chemical ? *
    10·1 answer
  • Please help I will mark brainliest!!!
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!