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
Liula [17]
4 years ago
14

A scientist is trying to determine whether a certain substance is radioactive. Which question would be most helpful to ask?

Chemistry
1 answer:
oksian1 [2.3K]4 years ago
3 0
Well a question to ask would be if the mass of the material has changed significantly as that would determine that the substance is radioactive or if there have been any high readings found by a Geiger meter in certain period of time

hope that helps 
You might be interested in
How many atoms of each element are in the chemical formula P2O5?
tigry1 [53]
<span>2 phosphorus and 5 oxygen</span>
4 0
3 years ago
Read 2 more answers
Why can’t you perform single displacement reactions with group IA metals?
pishuonlain [190]
Answer is: because alkaline metals (group IA metals) are the strongest reducing agents and most reactive metals.
Reducing agent<span> is an element  or compound that loses an </span>electron<span> to another </span>chemical species<span> in a </span>redox <span>chemical reaction and they have been oxidized.
Alkaline metals tend to lose only one electron in redox reaction.</span>
5 0
3 years ago
Abigail obtained 18.9 grams of calcium carbonate after performing a reaction. From her calculations, she knew she should have ob
zysi [14]

Answer:Percent error= 90.9%

Explanation:

Percent error or percentage error is defined as the  percentage of the  difference between a measured value usually from an experiment and an exact  value in comparison to the exact number.

its formula is thus

Percent error = experimental value - exact or actual value /exact value x 100

=(18.9 - 9.9 /9.9 ) x 100= 9/9.9) x 100

0.909 x 100 = 90.90 = 90.9%

5 0
4 years ago
Will the vapors of acetic acid go to the floor or ceiling of a room
solong [7]
The vapor of acetic acid will go to the floor of the room.

This is because the density of acetic acid vapor is equal to 2.07 is higher (almost twice) than the density of air which is equal to only 1
8 0
3 years ago
Which of these is an example of a physical change ?
Gre4nikov [31]
It's 1. Melting a substance. The rest are chemical changes
8 0
4 years ago
Other questions:
  • Why does the solution decolorize on standing after the equivalence point has been reached?
    6·2 answers
  • Wht is a atom and a nucleus
    7·2 answers
  • Give the formula of a compound in unpolluted air
    11·1 answer
  • FeSO4 • 7H2O
    11·2 answers
  • How many grams of Cl2 will be produced along with 250.0 kJ of heat in the following reaction? PCl5(g) + 87.9 kJ PCl3(g) + Cl2(g)
    6·2 answers
  • What is carbon in the lithosphere initially a part of before part of the burning of fossil fuel?
    11·2 answers
  • 3. Give an example of how carbon is transferred frem being in a living to a non-living<br> organism.
    12·1 answer
  • If earth was a hard boiled egg,which part of earth would the egg white represent?
    6·1 answer
  • B.Read the problem and answer the question that follow
    15·1 answer
  • The surface area of a liquid that partially fills a closed container affects the?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!