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
Setler79 [48]
3 years ago
7

Question 4 (higher question)

Chemistry
1 answer:
Jet001 [13]3 years ago
8 0

Answer:

Explanation:

Describe means you should recall facts, events or processes accurately. You might need to give an account of what something looked like, or what happened.

Explain means you need to make something clear, or state the reasons for something happening.  

Compare means you need to describe similarities and differences between things. If you are asked to compare X and Y, write down something about X and something about Y, and give a comparison. Do not just write about X only or Y only.

Evaluate means you must use information supplied, or your own knowledge, to consider the evidence for and against or to identify strengths and weaknesses. You must then complete your answer with a conclusion, stating which is better and why, for example.

You might be interested in
“NH4VO3” is a... <br><br> Symbol <br><br><br> Name <br><br><br> Chemical formula
shepuryov [24]

Answer:

its a chemical formula, it has numbers and symbols

3 0
3 years ago
Read 2 more answers
What is the mass of 4.84×10^21 platinum atoms?
Ket [755]
The mass will be 1.54g
7 0
2 years ago
Read 2 more answers
The radioactivity due to carbon-14 measured in a piece of a wooden casket from an ancient burial site was found to produce 20 co
bekas [8.4K]

Answer:

17202.6 years

Explanation:

Activity of the living sample (Ao) = 160 counts per minute

Activity of the wood sample (A) = 20 counts per minute

Half life of carbon-14 = 5730 years

t= age of the artifact

From;

0.693/t1/2= 2.303/t log Ao/A

Then;

0.693/ 5730= 2.303/t log Ao/A

Substituting values;

0.693/5730= 2.303/t log (160/20)

Then we obtain;

1.209×10^-4 = 2.0798/t

t= 2.0798/1.209×10^-4

Thus;

t= 17202.6 years

Therefore the artifact is 17202.6 years old.

3 0
3 years ago
Consider the elements in the periodic table. The stair-step line between the pink squares and the yellow squares separates the _
photoshop1234 [79]
The choices for this are as follows:

A) gases; solids
B) metals; nonmetals
C) nonmetals; metals
<span>D) reactive; nonreactive
</span>
I think the correct answer is option B. The stair-step line between the pink squares and the yellow squares separates the metals from the nonmetals. Hope this helps.
6 0
2 years ago
Which of these is a chemical property of a substance?
denis-greek [22]
Flammability
Hope it helps!
6 0
3 years ago
Other questions:
  • For hydrocyanic acid, HCN, Ka = 4.9 × 10-10. Calculate the pH of 0.20 M NaCN. What is the concentration of HCN in the solution?
    7·2 answers
  • When NH3(g) reacts with O2(g), the products of the combustion are NO(g) and H2O(g). What volume of O2(g) is required to react wi
    5·1 answer
  • If 0.5 gramd of hcl is dissolved in 500 ml of solution what is the ph
    9·1 answer
  • A certain liquid has a normal boiling point of and a boiling point elevation constant . A solution is prepared by dissolving som
    5·1 answer
  • How to remove acetone from a school chromebook
    15·2 answers
  • Convert 550 torr into SI units.
    8·1 answer
  • A. What evidence have you discovered to explain why air flows? B. What evidence have you discovered to explain why Earth has glo
    9·1 answer
  • Where do molecules humans need come from
    12·1 answer
  • Can someone pleaseeeeeeeeeee check my work to see if I did it right?
    9·1 answer
  • PLEASE HELP ME ON THIS ​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!