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SCORPION-xisa [38]
3 years ago
7

We can identify unknown elements in a star by matching the ___________ spectrum of the star to those of known elements. *

Chemistry
1 answer:
const2013 [10]3 years ago
4 0
Emission spectrum, mass spectrum does not make sense and neither does atoms spectrum. You use the emission spectrum to compared known elements in a star to the unknown elements in a star. Hope this help!
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a skateboarder wants to skate down the ramp at a skate park he will want the forces acting on him to be
kvasek [131]

Answer:

increase

Explanation:

At the skate park when a skateboarder wants to skate down a ramp, the skate boarder wishes to move faster and with speed so that it help him to skate more time. This can only be achieved if the all the forces acting on him will increase as he skates down the ramp without much of the frictional force acting on the wheels of the skate board. The less friction force acts on the wheel, the more he can skate with more speed.

Thus, the skateboarder wants the force to be increase that is acting on him.

4 0
3 years ago
A gas occupies 18.5L at stp. what volume will it occupy at 735 torr and 57°c?
olga nikolaevna [1]

 The volume that  will  be occupied at 735  torr and 57 c  is 23.12 L


 <u><em>calculation</em></u>

  • <u><em> </em></u> At STP   temperature=273 k  and  pressure=760 torr
  • <u><em> </em></u>by use of combined  gas formula

that is P1V1/T1= P2V2/T2

where; P1 =760 torr

           T1= 273  K

           V1= 18.5 L

          P2= 735 torr

         T2=  57+273= 330 K

          V2=?

  • by making   V2 the formula of subject

     V2= T2P1V1/P2T1

       V2=  [(18.5L  x 330 k  x 760 torr)/(735 torr x 273 k)]= 23.12  L




5 0
3 years ago
The equation that represents
dlinn [17]
CH and O is the reactants while CO and H2O is the products
6 0
3 years ago
What quantity measures the amount of space an object occupies?
RideAnS [48]
The correct one would be volume

8 0
3 years ago
Read 2 more answers
Predict how many electrons will Li (lithium) most likely be gained or lost
Effectus [21]

Answer:

Lithium will lose about 2 electrons

Making it a cation

4 0
3 years ago
Read 2 more answers
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