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
Nutka1998 [239]
3 years ago
6

I need help on question 1 and 2

Chemistry
2 answers:
Step2247 [10]3 years ago
8 0

Answer:semi metals

Explanation:

Phantasy [73]3 years ago
4 0

Answer:

1.positive, negative

2. Noble gases

Explanation:

difference in electrical charge means positive and negative

In the periodic table the last column is noble gases

You might be interested in
You need to make an aqueous solution of 0.243 M iron(III) chloride for an experiment in lab, using a 125 mL volumetric flask. Ho
irakobra [83]

Answer:

5 g

Explanation:

From the question, we have,

Molarity of FeIII solution= 0.245 M

Volume of solution = 125 ml

From

number of moles= concentration × volume

We have;

Number of moles= 0.245 M × 125/1000

Number of moles = 0.031 moles

Molar mass of Fe III = 162.5g/moles

Mass of iron III = number of moles× molar mass = 0.031 × 162.5= 5 g

n

3 0
3 years ago
The term "periodic" helps identify __________ that occur in the table, like electronegativity or atomic radii.
Montano1993 [528]

Answer:

option C= patterns

Explanation:

The periodic table is helpful to identify the element readily. All the elements are arranged properly. The elements with same physical and chemical properties are placed in same group and period. Periodic table is also helpful to predict the properties of those elements which are not discovered yet. This table is also very helpful to balance the chemical equations. The horizontal rows are called periods while vertical column are called groups. There are seven periods and eighteen groups are in periodic table.

Trends in periodic table:

As we move left to right in a period the atomic radius is decreases with increase of atomic number. The ionization energy goes to increases from left to right in period because of greater hold of nuclear charge on valance electron, so that's way more energy is required to overcome this charge and to make the atom ionic.

From left to right in period electron affinity and electronegativity also increases.

As we move top to bottom in group ionization energy decreases with increase of atomic number  because of large atomic radius. The valance electron require less energy to move free. The electron affinity and electronegativity also decreases from top to bottom.

6 0
3 years ago
In animal cells, DNA is organized in the _______.
Luda [366]
The answer is: Nucleus (same as in plant cells)
5 0
3 years ago
Read 2 more answers
Picture below<br><br> need done by 2:30<br><br><br><br> thanks, God bless your week
Leviafan [203]

1. \sf \bf {\boxed {\mathbb {Evaporation}}} - The changing of liquid to a gas.

2. \sf \bf {\boxed {\mathbb {Automobile}}} - The major source of pollution.

3. \sf \bf {\boxed {\mathbb {Greenhouse \:effect}}} - Carbon dioxide and water vapor trapping heat given off by Earth.

4. \sf \bf {\boxed {\mathbb {Ozonosphere}}} - Layer absorbing ultraviolet rays.

5. \sf \bf {\boxed {\mathbb {Condensation}}} - The changing of a gas to a liquid.

6. \sf \bf {\boxed {\mathbb {Ionosphere}}} - Layer responsible for reflecting radio waves.

7. \sf \bf {\boxed {\mathbb {Troposphere}}} - The layer in which weather changes.

\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{❦}}}}}

5 0
2 years ago
Read 2 more answers
Perform the following calculations and express the answer with the proper significant
Romashka [77]

Answer:

The answer is

210.6+14.57=225.17mm.

8 0
2 years ago
Read 2 more answers
Other questions:
  • What kind of melocule is water?A:nonpolarB:ionicC:polarD:charged
    14·1 answer
  • The concentration of the solid phase _____ the quantity present.
    15·2 answers
  • Robert Boyle wrote "Sceptical Chymist" What was his reason for writing this book? What was he trying to prove?
    9·2 answers
  • Organic formula for phenol
    10·1 answer
  • Please help!!!!!!!!!!!
    15·1 answer
  • Dicarbon monoxide, C2O, is found in dust clouds in space. Analysis of it shows that the sequence of atoms in this molecule is C–
    6·1 answer
  • If the initial pressure of a gas is 1.0 atm at 273k what is the new volume at 200k
    8·1 answer
  • What is the total number of moles of solute contained in 0.5 liter of 3.0 m
    6·1 answer
  • In which of these situations should a fire blanket be used?
    10·2 answers
  • Some people have one sickle cell gene and one normal gene. They have few defctive cells and no symptoms because the sickle cell
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!