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
dedylja [7]
3 years ago
14

Who first published the classification of the elements that is the basis of our periodic table today

Chemistry
1 answer:
snow_tiger [21]3 years ago
7 0
<span>Mendeleev should be the answer</span>
You might be interested in
An evacuated 276 mL glass bulb weighs 129.6375 g. Filled with an unknown gas, the bulb weighs 130.0318 g. Calculate the gas dens
baherus [9]

Answer:

density=1.43 g/L

Explanation:

Since the density formula is density = mass / volume, we need to find out the mass of the gas and the volume is that of the container.

The mass of the gas is  130.0318 g-129.6375 g=0.3943 g

The gas volume is  276mL*(1L/1000mL) 0.276 L

density = mass / volume=0.3943g/0.276L

density =1.43g/L

5 0
3 years ago
What is the role of plastocyanin in the z-scheme model?
murzikaleks [220]

Answer:

It shuttles electrons between the cytochrome complex and photosystem I.

Explanation:

6 0
2 years ago
What pH would you expect an acid to have?
kondor19780726 [428]
An acid has a pH <7. 7 is the pH of a neutral substance, like water, and substance with a pH >7 are considered basic or alkaline.
8 0
3 years ago
A student has 10 mL of a solution that might contain any or all of the following cations at 0.01 M concentrations: Mn2+, Ba2+, A
Ivanshal [37]
<span>For the answer to the question above,
Addition of HCl causes a precipitate to form: 
Ag+ & Cl- -- AgCl a white ppt 


H2SO4 is added to the supernate another precipitate forms: 
Ba+2 & SO4-2 --> BaSO4 a white ppt 


a solution of NaOH is added to the supernatant liquid until it is strongly alkaline. No precipitate is formed: 
no Mn+2 & no Cu+2 which would have ppt as hydroxides</span>
I hope this helps you.
7 0
3 years ago
How much heat is required to convert 2.55g of water at 28.0 degree celsius to steam 100 degree celsius
Crazy boy [7]
767.448 Joules of heat is required.
You use the equation Q=MCdeltaT
Make sure you convery celsius to Kelvin
Specific heat of water is 4.18
So it will be Q=2.55(4.18)(72)
Q=767.448
4 0
3 years ago
Other questions:
  • Indicate the number of protons, neutrons, and electrons in each of the following species: 15N7, 33S16, 63Cu29, 84Sr38, 130Ba56,
    13·1 answer
  • ) The student collects the H2(g) produced by the reaction and measures its volume over water at 298 K after carefully equalizing
    14·1 answer
  • What is a chemical property of mercury?
    10·1 answer
  • A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 8.10kg of water at 33.9 degree
    14·1 answer
  • Can cells have different types of openings?
    10·1 answer
  • When 35.0 mL of 0.400 M hydrobromic acid and 35.0 mL of 0.400 M ammonia are combined, the pH of the resulting solution will be :
    8·1 answer
  • Which is a site where sedimentary rocks form? A. deep underground B. forests C. volcanoes D. ancient seas
    15·2 answers
  • What are the genotypic and phenotypic ratios
    12·2 answers
  • When the cell splits, they have a nucleus with complete genetic material for the new daughter cells. What is this genetic materi
    10·1 answer
  • Humans are most abundant during which geological era?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!