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
Zigmanuir [339]
3 years ago
5

This one is actually 30 points chem quesitons

Chemistry
1 answer:
GuDViN [60]3 years ago
5 0

Answer:

The answers to your questions are below:

Explanation:

Question 31 Silicon and sulphur, because they are in the same period (3)

Question 34 the third option, density is not in the table

Question 37 group 1A alkali metals

Question 38 group 1A, oxygen group

Question 39 They are metalloids

You might be interested in
What is a possible benefit of having the Food and Drug Administration (FDA) test a new drug instead of having the drug manufactu
Alex
The FDA would have better authority i guess than the manufacturer and it would be safer for the FDA to test it out. Hope it helps
8 0
3 years ago
Read 2 more answers
Humans are most abundant during which geological era?
emmainna [20.7K]

Answer:

Cenoizic

Precamborian

8 0
3 years ago
Elements are organized into groups / families according to their physical and chemical properties. Identify the elements that's
Kryger [21]

Answer:

1 valence - Alkali Metals: Li Lithium, Na Sodium, K Potassium

2 valence - Alkaline Earth Metals: Be Beryllium, Mg Magnesium, Ca Calcium

3 valence - Non-metals: B Boron, Al Aluminium

4 valence - Non-metals: C Carbon, Si Silicon

5 valence - Non-metals: N Nitrogen, P Phosphorus

6 valence - Non-metals: O Oxygen, S Sulfur, Se Selenium

7 valence - Halogens: F Fluorine, Cl Chlorine, Br Bromine

8 valence - Noble Gases: He Helium, Ne Neon, Ar Argon

3 0
4 years ago
At 25.5°C a gas has a volume of 125mL. What would be the volume be if the temperature increased to 50°C
kolezko [41]

Answer:

245 mL

Explanation:

Please see the step-by-step solution in the picture attached below.

Hope this answer can help you. Have a nice day!

7 0
4 years ago
How many total electron will fit in the 1st energy level
nevsk [136]
2 elections will fill the first energy level
4 0
3 years ago
Read 2 more answers
Other questions:
  • The half-life of cesium-137 is 30 years. Suppose we have a 40 mg sample. Exercise (a) Find the mass that remains after t years.
    13·1 answer
  • Look at the diagram below.
    14·2 answers
  • which law states that the volume and temperature are inversly proportional in a fixed quantity of gas
    11·1 answer
  • WHAT MASS OF WATER WILL BE PRODUCED FROM 2.70 MOLES OF CA(OH)2 REACTING WITH HCI
    12·1 answer
  • What happens when the threat of exposure to dirty air is reduced in a community?
    7·2 answers
  • When nitrogen and magnesium form an ionic bond, what is the formula?
    14·1 answer
  • Why does H2O have a lower melting point than MgO
    6·1 answer
  • Isotopes of the same element have a different number of ______​
    14·1 answer
  • Wrrite any 4 importance of nitrogen​
    9·1 answer
  • A lone pair must reside in which orbital type(s) to participate in resonance/conjugation/delocalization?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!