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
giving the incomplete equation 2N2O5 (g) which set of products completes and balances the incomplete equarion
a_sh-v [17]

Answer:

The complete question is as follows

Given the incomplete equation: 2 N2O5(g) ==>  Which set of products completes and balances the incomplete equation?

A)2 N2(g) + 3 H2(g)

B)2 N2(g) + 2 O2(g)

C)4 NO2(g) + O2(g)

D)4 NO(g) + SO2(g)

The correct option is C) 4NO2(g) + O2(g)

Explanation:

Note that the products should be NO2 and O2 since the reactant is entirely made up of N and O. option A is not correct as hydrogen cannot emerge as a product in this reaction. Matter can never be created or be destroyed bu can only change in a chemical reaction. Option D is not also correct for the same reason.

Option B is not correct since it did not balance the number of atoms of O and N in the reactant side of the equation.

The option C) 4NO2(g) + O2(g) is therefore the right option since it balances both the elements and the number of atoms of the elements present.

7 0
3 years ago
Please help me ill give brainiest to the right answer
aleksley [76]

Answer:

D.

Explanation:

Cause the weather made those rocks. Like volcanos and weather.

6 0
3 years ago
Read 2 more answers
You are given a solution of sugar and sand and water your task is to separate sugar from sand which of the following experimenta
Ostrovityanka [42]

Answer:

Explanation:

Filtration followed by evaporation:

To separate the mixture of sand and sugar, it is best to use the separation technique of filtration then evaporation.

Pour the water into the mixture. The sugar will dissolve with time in the water. Sand is made up of quartz and does not dissolve in water.

After the dissolution, filter the solution to separate the sand using a filter paper.

Dry the sand thereafter then proceed to evaporate the sugar with water solution. Evaporation will turn water into vapor and the sugar crystals will be left behind.

8 0
3 years ago
Which type of pollution includes CFCs and smog?
Elina [12.6K]
Air pollution exist in two forms namely ozone and particle pollution. CFCs and smog are under the ozone form of pollution. Ozone type of pollution is mostly formed by reaction between the sunlight and the vapors that are emitted due to human activities. 
5 0
3 years ago
Read 2 more answers
Can atoms compose molecules?
Nana76 [90]

Answer: yes

Explanation: Atoms can join together to form a molecule

7 0
3 years ago
Read 2 more answers
Other questions:
  • The outer planets—Jupiter, Saturn, Uranus, and Neptune—are made up of which gases?
    6·2 answers
  • The volume of a single platinum atom is 1.12×10-23 cm3. what is the volume of a platinum atom in microliters?
    6·2 answers
  • The charge of the stable ion of S and Li?
    8·1 answer
  • A 0.100 m solution of HCl dissolved in benzene has a freezing point depression of 0.512oC, while an 0.100 m solution of HCl in w
    14·1 answer
  • If 133mL of a 1.2 M glucose solution is diluted to 41.0L, what is the molarity of the diluted solution?
    12·1 answer
  • Why do ions in an ionic compound typically form an orderly crystal structure
    6·1 answer
  • Geologists apply various methods to study the layers of the earth. Which if the following is a method used to study the deaths l
    6·1 answer
  • 3.05 moles of H2O is equivalent to (blank amount) molecules of water.<br><br> Show your work.
    12·1 answer
  • According to the Law of Conservation of Mass, how much water is produced if 22.5 g of
    15·1 answer
  • Martin slowly pours an unknown liquid into a container that originally had some water in it. He is measuring the temperature in
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!