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jolli1 [7]
3 years ago
10

If a satellite or spaceship explodes in outer space, you can see the explosion from a distance but you cannot hear it. Why?

Chemistry
2 answers:
gulaghasi [49]3 years ago
7 0
C) Sound is a mechanical wave and needs a medium to travel through while light is an electromagnetic wave
Lynna [10]3 years ago
5 0
The answer is:
   C) Sound is a mechanical wave and needs a medium to travel through while light is an electromagnetic wave.
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When an organic molecule loses hydrogen atoms it is said to be:_______.
Gnesinka [82]
C. Oxidized and reduced are the same.
7 0
3 years ago
What did early scientists assume that the polar caps had in common?
Vilka [71]

Answer:

They assumed they both had water.

Explanation:

Because they only could look at it through telescopes that were not advanced

3 0
3 years ago
Determina el pH del café cuya concentración de H+ es de 0.00001M
lara31 [8.8K]

Answer:

5

Explanation:

Given parameters:

Hydrogen ion concentration  =  0.00001M

Unknown:

pH of the solution =?

Solution:

The pH is used to estimate the degree of acidity or alkalinity of a solution. To solve for pH of any solution, we use the expression below;

          pH  = -log [H⁺]

[H⁺] is the hydrogen ion concentration

        pH  = -log (1 x 10⁻⁵)

      pH = -(-5) = 5

4 0
3 years ago
If a object has a mass of 10 kilograms, how much does it weigh in newtons?
Len [333]
Depends on where the object is. On earth, moon , or somewhere without any other mass (theoretically). I think you mean how much does weigh on earth. So, the average gravitational acceleration on earth is : 9.83 m/s^2 To find out how much an object weighs, this is the formula : G=m.g where m is mass of the object g is the gravitational acceleration and G is weight. So, G = 10.9,83 = 98,3 N is the answer.
5 0
2 years ago
I'm not really sure on how to test if it is a chemical or physical change....
kolezko [41]
Chemical change because it cannot be reversed
4 0
3 years ago
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