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
Sonja [21]
3 years ago
9

What trends were seen in medeleevs periodic table

Chemistry
1 answer:
Paraphin [41]3 years ago
8 0

Answer:

groups are based on how many electrons to become stable

Explanation:

You might be interested in
Convert the Following<br><br> 10 hm to cm
Alik [6]

Answer:

1x 10⁴ m or 1000 meters

Explanation:

1 hectometer = 100 meters

10 hectometers = 10 x 100 meters = 1000m

or in scientific form = 1 x 10⁴

4 0
3 years ago
What is component of John Dalton’s atomic theory?
Nat2105 [25]

Answer:

•Matter is made up of smallest indivisible particle named as atom.

•All atom of  same element have equal atomic mass and identical properties.

•Compounds are made up two or more different types of atoms.

•In a chemical reaction rearrangement of atoms takes place.

•Atoms of different elements differ in mass and size.

6 0
3 years ago
Complete and balance the following equation:
sertanlavr [38]
You need to add the last substance to the products side(the right sode of the arrow). You have hydrogen and oxygen - water.

You get: BrO3 + N2H4 -> Br2 + N2 + H2O

# of Br: 1x1 = 1 # of Br: 2x1 = 2
O: 3x1 = 3 O: 1x1 = 1
N: 2x1 = 2 B N: 2x1 = 2
H: 4x1 = 4. H: 2x1 = 2

Br:
Multiply the reactant (left) side by 2 to balance.

O:
You've just multiplied the reactant oxygen by 2 so now the reactant side equals 6. Multiply the product (right) side by six as well.

H:
The product side is now equal to 12. Multiply the reactant side by 3 to balance.

N:
Now you have to balance N because the reactant side has been risen. So multiply the product side by three as well.

You end up with the complete and balanced equation:

2BrO3 + 3N2H4 -> Br2 + 3N2 + 6H2O
4 0
4 years ago
What is acid rain? Which fossil fuel causes acid rain? What are the chemical reactions that produce the acid?
Ahat [919]

Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

When we burn the coal that produce sulfur dioxide .

6 0
3 years ago
In a demonstration of strong electrolytes, weak electrolytes, and nonelectrolytes, Professor Popsnorkle used a lightbulb apparat
HACTEHA [7]

Answer:

table sugar, C12H22O11ation

Explain:

we learned this last year

8 0
3 years ago
Other questions:
  • How many moles of nh3 can be produced from 13.5 mol of h2 and excess n2?
    9·1 answer
  • The density of liquid mercury is 13.69 g/cm^3. How many atoms of mercury are in a 15.0 cm^3 sample? Use "E" for "x10" and use si
    11·1 answer
  • Draw the structural formula for 3-ethyl-3-methyl-1-pentyne. Click the "draw structure" button to launch the drawing utility.
    9·1 answer
  • Which of the following is the best example of a closed system?
    9·2 answers
  • the density of titanium is 4506 kg per cubic meter. what is the density of titanium in grams per cubic centimeter
    7·1 answer
  • Can you help me with chemistry
    13·1 answer
  • How many grams of Magnesium Chloride (molar mass = 95.2 g/mole) will be needed to make 6.0 L of a 2.5 M MgCl2 solution?
    8·1 answer
  • Which molecule will undergo only London dispersion forces when interacting with other molecules of the same kind? a.HCl b.C2H5OH
    7·1 answer
  • How the Atmosphere affects the Biosphere pls help
    10·1 answer
  • Helppppp meeeeeeeeeeeeeeeeeeeeeeeeeeeee ill mark brainlist
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!