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
Dvinal [7]
3 years ago
8

The basic principles of atomic theory were first conceived by:

Chemistry
1 answer:
Natasha2012 [34]3 years ago
7 0

The ancient atomic theory was proposed in the 5th century bc by the Greek philosophers Leucippus and Democritus and was revived in the 1st century bc by the Roman philosopher and poet Lucretius.

You might be interested in
A geochemist measures the concentration of salt dissolved in Lake Parsons, an isolated salt lake. He finds a concentration of 21
VikaD [51]

Answer:

68,2%

Explanation:

Supposing the initial salt concentration of lake Parsons is the same of non-isolated lakes, 6,67L, and the change of salt concentration in isolated lake is just for water evaporation it is possible to write:

6,67gL⁻¹×X = 21gL⁻¹×Y

<em>-Where X is the initial water and Y is the water that remains in the isolated lake-</em>

Thus:

6,67X = 21Y

0,318 = Y/X

0,318 is the ratio of water that remains between total water. To obtain the ratio of evaporated water:

1-0,318 = 0,682

In percentage: <em>68,2%</em>

<em />

I hope it helps!

<em />

3 0
3 years ago
How to calculate the sum of the ratio of the ions
ANEK [815]
If it is just ratio you must just put the mass number on the either side of the symbol ‘:’ and cancel but the same process is not used to find simplest ratio
6 0
3 years ago
How many grams of CaCl 2 are in .48 moles ?
Llana [10]

Answer:

We assume you are converting between moles CaCl2 and gram. You can view more details on each measurement unit: molecular weight of CaCl2 or grams This compound is also known as Calcium Chloride. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles CaCl2, or 110.984 grams.

7 0
3 years ago
Read 2 more answers
How many atoms are in<br> 3Ca(CIO3)2
satela [25.4K]

Answer:

Explanation:

Percent composition by element

Element Symbol # of Atoms

Chlorine Cl 2

Calcium Ca 1

Oxygen O 6

4 0
2 years ago
I NEED HELP PLEASE, THANKS! :)
Free_Kalibri [48]

Answer:

Cs

Explanation:

Metallic character increases across a period to the left and downwards.

If you look at the periodic table, Cs is lower and more towards the left.

7 0
3 years ago
Other questions:
  • Please help me!!!! Thank you so much! I’m giving away 25 points for this one! I need both the problems solved
    15·1 answer
  • Explain how the atoms of one element differ from those of another element. explain how the atoms of one isotope differ from thos
    13·1 answer
  • Molar mass of acetone(CH3COCH3)​
    13·2 answers
  • What type of reaction is this?<br> 2Na(s) + Cl2(g) —&gt; 2NaCl(s)
    10·1 answer
  • What is the key difference between a liquid and a gas?
    6·2 answers
  • What mass of calcium
    9·1 answer
  • A scientist is measuring the pressure that is exerted by each of the following gases in the atmosphere: carbon dioxide, oxygen,
    5·2 answers
  • Compare the two types of optical telescopes
    11·1 answer
  • What is titanium's melting point?
    6·1 answer
  • Nguyên tử của nguyên tố X có tổng số hạt 40. Tổng số hạt mang điện nhiều hơn số hạt không mang điện là 12 hạt.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!