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
Svetlanka [38]
2 years ago
5

Please I need help with questions 5-9 and it’s very hard and I’m struggling with it and if you need to see the picture big then

click on it and it will be big and I need help plotting the letters in to the Punnet square for questions 5-9

Chemistry
1 answer:
Serggg [28]2 years ago
3 0
"the answer will be 0.00 "
You might be interested in
Balance Reaction<br><br> K(s) + H2O(l) —&gt; KOH(aq) + H2
Wewaii [24]

Answer:

Chemistry is a branch of science that involves the study of the composition, structure and properties of matter. Often known as the central science, it is a creative discipline chiefly concerned with atomic and molecular structure and its change, for instance through chemical reactions.Explanation:Chemistry is a branch of science that involves the study of the composition, structure and properties of matter. Often known as the central science, it is a creative discipline chiefly concerned with atomic and molecular structure and its change, for instance through chemical reactions.

4 0
2 years ago
Study the graph about oxygen content of Earth’s atmosphere. Oxygen Content of Earth apostrophe s Atmosphere line graph. X axis i
Anika [276]

Explanation:

from the graph study about oxygen content of Earth's atmosphere, we can understand that  

1)

4 billions year ago = None, 3 billions year ago = Cyanobacteria and Archaea , 2 and 1 billions year ago = Bacteria and Green algae , 500 Ma = invertebrate fossils started to existence. Early land plants came in to existence around 398 MA that is Devonian. Dinosaurs are came in to existence during Triassic and Jurassic that is around 251 Ma. Man and animals are recent organism came under Holocene that is 11000 years ago.

2)

The first cells on the earth are anaerobic microorganisms, as the CO2 level is too high they survive by using CO2.

3)

Starting around 2.7 billion years ago, photosynthesis by Cyanobacteria and later plants , pumped “OXYGEN” in to the atmosphere. This caused the decline of anaerobic bacteria and allows the diversification of animals as seen in “CAMBRIAN” around 500 millions year ago.  

Early vascular plants “CAPTURED” CO2 starting before the Carboniferous period that began around 350 millions year.Leading to lower temperatures and allowing and allowing the seed plants to outcompetes seedless plants.

Modern human activities has raised both “CO2 and METHANE” level in the atmosphere to over leading to higher temperature and extinction of other species.

3 0
3 years ago
Read 2 more answers
What is the correct name for Au3N?
Reptile [31]

Answer:

option D= Gold (I) nitride

Explanation:

The name of the given compound is gold(I) nitride.

Molar mass can be determine by following way:

molar mass Au3N = (molar mass of gold × 3) + (molar mass of nitrogen)

molar mass Au3N = (196.97 × 3 ) + ( 14 )

molar mass of Au3N =  590.91 g/mol + 14 g/mol

molar mass of Au3N = 604.91 g/mol

The nitrogen has valency of -3 so three Au(+1) will require while the valency of Au is (1+) one nitrogen will require to make the compound overall neutral.

Au3N

3(1+) + (-3) = 0

+3 - 3 = 0

0 = 0

The overall charge is 0, the compound will be neutral.

8 0
3 years ago
How does scientific method help scientists
Irina18 [472]

Scientists use the scientific method all the time to help them understand things about certain topics. The scientific method is a list of steps that are used before, during, and after the experiment. The scientific method can help prove hypothesis about things and can tell you the outcome of the experiment.

6 0
3 years ago
Select the correct answer. What happens when an electron absorbs energy? A. The electron moves from a lower energy orbital to a
umka2103 [35]
I choose the option A.
The electron absorbs energy from specific wavelength then moving from a lower energy orbital to a higher energy orbital.
3 0
2 years ago
Other questions:
  • The method used by Joseph Priestley to obtain oxygen made use of the thermal decomposition of mercuric oxide given below. What v
    12·1 answer
  • Convert 35kg to its equivalent in g using dimensional analysis
    7·1 answer
  • A certain protein was found to contain 0.388% manganese by mass. Determine the minimum molecular mass of the protein.
    15·1 answer
  • What type of hydrocarbon is 2-octene, and what about the structure allows 2-octene to be classified as this type of hydrocarbon?
    6·1 answer
  • One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(II) carbonate,
    10·2 answers
  • What is the formula mass of mgcl2
    13·1 answer
  • Liquid water in the earth's air is an example of a solution. What type of solution would it be?
    11·1 answer
  • What is the molarity of a salt solution made by dissolving 250.0 grams of NaCl in 775 mL of solution?
    15·1 answer
  • PLZZZ HELP ME ASAP
    7·1 answer
  • Helpp me Guys I Need This Now:)​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!