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shtirl [24]
3 years ago
13

What is parallax?

Chemistry
2 answers:
Vikki [24]3 years ago
7 0

Answer:

Answer is B.the apparent change in position of a nearby star when looked at from different place.

Explanation:

I hope this helps!

sashaice [31]3 years ago
5 0

Answer:

B

Explanation:

Because it is viewed in a different place

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How would you expect the appearance of a rock high in iron and magnesium to differ from a rock with very little iron and magnesi
xenn [34]
High iron and magnesium rocks have a high percentage of dark-colored (mafic) minerals.

So the high iron and magnesium would be darker than the low iron and magnesium.
5 0
3 years ago
Read 2 more answers
If 100 yards = 1 football field, what is the length, in meters, of 4.9<br> football fields?
Veseljchak [2.6K]
* Answer: 448.056 meters *
——
1 yard = .9144 meters (according to Google)
100 yards= 91.44 meters
——
100*4.9= 490 yards
490 yards = 448.056 meters

* 4.9 Football fields= 448.056 meters *

I hope this helps! :)
4 0
2 years ago
As with any drug, aspirin (acetylsalicylic acid) must remain in the bloodstream long enough to be effective. Assume that the rem
Olenka [21]

Answer:

180 mg

Explanation:

For a first-order reaction, we can calculate the amount of aspirine (A) at a certain time (t) using the following expression.

A=A_{0}.e^{-k.t}

where,

k: rate constant

A₀: initial amount

If we know the half-life (t_{1/2}) we can calculate the rate constant.

k=\frac{ln2}{t_{1/2}} =\frac{ln2}{3h} =0.2h^{-1}

When t = 4 h and A₀ = 400 mg, A is:

A=400mg.e^{-0.2h^{-1}\times 4h} =180mg

4 0
2 years ago
Describe differences between conduction and convection give examples
nevsk [136]

Explanation:

Both conduction and convection are both forms of heat transfer from one place to another.

  • In conduction, there must be contact between two bodies for the process to take place but in convection, the matter moves to transfer heat.
  • Conduction mostly occurs in solid substances whereas convection occurs mostly in fluids.
  • Heat transfer in conduction is quite slow compared to convection which is much faster.

Example of conduction is heating of iron pot when cooking

Example of convection is the refrigerating system.

4 0
3 years ago
Plz help. I just need someone to check answer. :(
My name is Ann [436]
These substances can be separated by distillation, so your answer is A.
5 0
3 years ago
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