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dimulka [17.4K]
3 years ago
10

Two cups of the same size are filled to the brim with clear liquids. Cup A holds water. Cup B contains alcohol. Your teacher cha

llenges you to figure out which cup holds water. Because of your great science knowledge, you know that all substances have their own special properties. You and your lab partner add an ice cube to each cup. The ice floats in one liquid. You predict it is water. And the ice sinks in the other liquid. You predict that liquid is alcohol. What type of property of matter did you use to identify the liquids?
Chemistry
2 answers:
kkurt [141]3 years ago
3 0

They used density, density is the degree of compactness of a substance.

kozerog [31]3 years ago
3 0
Density because ice is less dense than water, therefore it floats
However, ice is more dense than alcohol, so it sinks
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Complete the statement about the environment and its components.
borishaifa [10]

the environment is Healthy

3 0
2 years ago
If the half life of a radioactive isotope is 5000 years, how much of the radioactive isotope in a specimen will be left after 10
marissa [1.9K]
Half life is the time taken by a radioactive isotope to decay by half its original mass. In this case, the halflife of the radioactive isotope is 5000 years. 
Initially the mass is 100 %; thus the mass that will be left will be given by;
New mass = Original mass × (1/2)^n where n is the number of half lives; 
  n = 10000/5000 = 2
New mass = 100% ×(1/2)^2
                 = 100 % × 1/4 
                 = 25%
Therefore; the mass left after 10000 years is 25% or 1/4 of the original mass.
5 0
3 years ago
What are the molarity and osmolarity of a 1-liter solution that contains half a mole of calcium chloride? How many molecules of
givi [52]

Answer:

Molarity = 0.5 M

Osmolarity = 0.5 x 2 = 1 Osmpl.

Molecules of Cl2 = 6.02 x 10^{23} / 4= 1.505 x 10^{23} no. of molecules

Explanation:

If we add half mole in 1L volume than molarity will obviously be 0.5 M.

The osmolarity is molarity multiplies by number of dissociates of solute that for CaCl2 are 2. So, 2 x 0.5 = 1

Half will be molecules of Ca and half will be of Cl2 for 0.5M.

6 0
3 years ago
What chemical process occurs in cells to release energy?
Lana71 [14]

Answer:

B. Respiration

Explanation:

cellular respiration is the process where cells use glucose (C6H12O6) and oxygen gas (O2) to make carbon dioxide (CO2) water (H2O) and ATP, which is energy

formula:

C6H12O6 + 6O2 -> 6CO2 + 6H20 + 38ATP  

3 0
2 years ago
PLEASE HELP ASAP
sashaice [31]

Answer:

put a salt into the beakers

3 0
3 years ago
Read 2 more answers
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