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ella [17]
3 years ago
12

A scientist is studying the liquid shown here. She thinks the liquid is a mixture. Describe an investigation she could do to dem

onstrate that the liquid is in fact a combination of substances.
Biology
2 answers:
schepotkina [342]3 years ago
7 0

Answer:

she could somehow try to separate the mixture into its two original forms? I can't really help you well without more info, sorry

DIA [1.3K]3 years ago
7 0
There is no reference but she can demonstrate that the liquid is a combination of other substances by:

If solids:

1. If you can see any solids
2. Reducing the temperature of the liquid so that the dissolved solid will crystallize.

If Liquids:

1. Fractional distillation
2. Observe difference in density
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Which statement regarding the relative ages of rocks and events is
taurus [48]

Answer:

C. Faults are younger than the youngest layer they cut through.

Explanation:    

<em> A. Intrusive rock is older than the surrounding rock layers. </em>WRONG. The intrusive rocks are those that solidify underground and always form after the ones around them. So they are younger than the surrounding rocks.

<em>B. A fold is older than the oldest rock layer it contains. </em>WRONG. First, layers are set, and then, it occurs the folding. The folding is always younger than the involved layers.  

<em>C. Faults are younger than the youngest layer they cut through.</em> RIGHT. A fault is a cut through different layers that occurs when the sedimentary rock breaks transversally. It occurs always after the sedimentary rock is already formed. So the fault is always younger than all the layers it cuts through.

D. Rock layers that have been overturned are oldest from the base to the surface. WRONG. If <u>overturned</u>, according to the superposition low, layers are oldest from the surface to the base. Superposition law states that during the sedimentary rock formation, the oldest layer is always that one at the bottom, while the younger layer is the higher one.

4 0
3 years ago
Which part of the cell is selectively permeable? Why does it say so?
tresset_1 [31]

Answer:

cellular membranes

Explanation:

Cellular membranes are selectively permeable because they allow only certain molecules to cross into and out of the cell. The phospholipid bilayer is a selectively permeable membrane that surrounds all biological cells. The movement of molecules across the cell membrane bilayer can occur by passive transport (does not require energy) or active transport (requires energy). For example, water molecules pass passively through the cell membrane (passive transport), while other molecules pass through transmembrane proteins against a concentration gradient (active transport).

5 0
3 years ago
Which one of the following is an example of epithelial tissue?
Kruka [31]
B. subcutaneous skin layer

6 0
3 years ago
8. Find the acceleration of ball A and Ball B
Taya2010 [7]

According to Newton's second law of motion,

acceleration= Net force divided by mass

Net force of A=10N

Mass of A=10kg

F/M

=10N/10kg = 1 m/s2

Acceleration= 1m/s2

5 0
2 years ago
30% of B-A=18% OF B+A <br>THEN A:B?
dlinn [17]

Answer:

1:4

Explanation:

30%= \frac{30}{100}

18%= \frac{18}{100}

<em>Rewrite the given information:</em>

\frac{30}{100} (B - A) =  \frac{18}{100}(B + A)

<em>Multiply by 100 throughout:</em>

30(B -A)= 18(B+A)

<em>Divide by 6 throughout,</em>

5(B -A)= 3(B +A)

<em>Expand</em>

5B -5A= 3B +3A

<em>Bring</em><em> </em><em>A</em><em> </em><em>terms</em><em> </em><em>to</em><em> </em><em>1</em><em> </em><em>side</em><em> </em><em>and</em><em> </em><em>B</em><em> </em><em>terms</em><em> </em><em>to</em><em> </em><em>another</em><em>:</em>

5B -3B= 5A +3A

<em>Simplify</em>

2B= 8A

<em>Divide by 2 throughout:</em>

B= 4A

Now, we have to find the ratio of A to B.

B= 4A

<em>Divide by 4 throughout:</em>

A = =  \frac{1}{4} B

<em>Divide by B on both sides:</em>

\frac{A}{B}  =  \frac{1}{4}

Thus, A:B= 1:4

4 0
3 years ago
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