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
Ivan
3 years ago
13

1. Who was the first person to create a periodic table? When?

Chemistry
2 answers:
Hatshy [7]3 years ago
8 0

Answer:

Mendeleev discovered the periodic table (or Periodic System, as he called it) while attempting to organise the elements in February of 1869.

Explanation:

goldenfox [79]3 years ago
7 0

Mendeleev discovered the periodic table (or Periodic System, as he called it) while attempting to  the elements in February of 1869. also I made a enderBender of our pfp!

You might be interested in
Based on the table, which atom has a charge of –1?<br> 1<br> 2<br> 3<br> 4
Shkiper50 [21]

An electron

there is no table but an electron has a charge of -1

<h2>Hope this helps ;D</h2><h2></h2><h2>Kenny </h2>
6 0
3 years ago
Is saturated fat the same as trans fat?
Oduvanchick [21]

Answer:

Saturated fat occurs naturally in red meat and dairy products. It's also found in baked goods and fried foods. Trans fat occurs naturally in small amounts in red meat and dairy products. Trans fat can also be manufactured by adding hydrogen to vegetable oil.

4 0
3 years ago
What is an ion in chemistry
Inga [223]
Its an atom, or molecule, [in which] the complete amount of electrons isn't equal to the complete amount of protons. (Giving the atom/molecule a positive or negative electrical charge). 

If this is incorrect- I'm sorry! ^^;


4 0
3 years ago
A balloon contains a fixed amount of helium. If the initial conditions are 1.12 liters, 3.00 atmospheres, and 19 degrees Celsius
Semmy [17]

Answer:

The final volume will be 3.39 liters

Explanation:

P1V1/T1 = P2V2/T2

P1 = 3 atm

T1 = 19( degrees celsius) + 273 = 292 K

V2 = TO BE DETERMINED

P2 =1 atm

T2 = 22( degrees celsius) + 273 = 295 k

P1V1/T1 = P2V2/T2

V2 = P1V1T2/P2T1 = (3)(1.12)(295)/(1)292) = 3.39 Liters

4 0
3 years ago
Which one of the following represents an acceptable set of quantum numbers for an electron in an atom? (arranged as n, l, ml, an
vfiekz [6]
First, since l = n-1,
5,4,-5,1/2 and 2,1,0,1/2 are the only answer choices left.
Next, since ml = -l to l,
2,1,0,1/2
is the answer because in 5,4,-5,1/2, the ml value of -5 is not in the range of -4 to 4, as notes by the value 4 for l.
8 0
3 years ago
Other questions:
  • Heat is transferred directly from a heat reservoir at 200 C to another heat reservoir at 5C. If the amount of heat transferred i
    11·1 answer
  • Would the hardness of a mineral affect its performance in the streak test why or why not
    7·1 answer
  • An atom of an element has 5 electrons in L-shell.
    10·1 answer
  • Magnesium fluoride is used in the ceramics and glass industry. What is the mass of 1.72 mol of magnesium fluoride?
    15·1 answer
  • HELP ASAP!! GIVING BRAINLIEST!
    10·1 answer
  • Give the ideas that you have at this time about how energy relates to differences between solids, liquids and gases.
    5·1 answer
  • What happens to the atomic size of elements on moving from left to right in a period of modern periodic table?
    10·2 answers
  • Given the following electronic configurations, identify how many valence electrons each atom has.
    11·1 answer
  • . Why do you use a pencil and not a pen to mark TLC plates?
    5·1 answer
  • How many atoms are equal to 1.5 moles of hellium
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!