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Vikki [24]
3 years ago
12

Suppose that the physical properties of two stars are identical in every way --- for example, same distance, same mass, same tem

perature, same chemical composition, and same speed relative to Earth --- except that one star rotates faster than the other. Spectroscopically, how could you tell the stars apart?
Chemistry
1 answer:
larisa [96]3 years ago
4 0

Answer:

By measuring it's Radical velocity using Doppler Phenomenon...

Explanation:

It is done by measuring the absorption spectrum produces by a star as a result of measuring Doppler's relative wavelength. The star with the lower speed must have lower absorption spectrum extent as compared to the faster one.

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How might a geologist measure the distance of the earth movement along a fault line from a divergent plate tectonic?
Akimi4 [234]

Answer:

hi hot girl my number is 9336046968

6 0
3 years ago
NH3 + HCI —> NH4CI synthesis O decomposition O single replacement O double replacement​
wlad13 [49]

Answer:

synthesis

Explanation:

The reaction given is a synthesis reaction or combination reaction.

Given equation:

                        NH₃  +  HCl   →   NH₄Cl

In a synthesis reaction, a single product is formed from two or more reactants

                          A + B →  C

The formation of compounds from the union of constituent elements also falls into this category.

So the given reaction is a synthesis reaction.

In a decomposition reaction two or more products are formed from a single reactant

In a single replacement reaction, one substance replaces another.

In double replacement reactions partners in a chemical specie are exchanged.

Therefore the given reaction is a synthesis reaction

8 0
3 years ago
When a hydrocarbon fuel is burned, almost all of the carbon in the fuel burns completely to form co2 (carbon dioxide), which is
xxTIMURxx [149]
<h3>Answer:</h3>

               1.5 × 10⁸ Kg of CO₂ / Year

<h3>Solution:</h3>

According to statement,

                        1 kwh generation produces  =  0.73 Kg of CO₂

So,

              700 kwh generation will produce  =  X Kg of CO₂

Solving for X,

                      X =  (700 kwh × 0.73 Kg) ÷ 1 kwh

                       X =  511 Kg of CO₂ / Year

Also, as calculated,

                           1 household produces  =  511 Kg of CO₂ / Year

Then,

                 300,000 households will produce  =  X Kg of CO₂ per Year

Solving for X,

                     X =  (300000 households × 511 Kg) ÷ 1 household

                    X =  153300000 Kg of CO₂ / Year

Or,

                    X  = 1.5 × 10⁸ Kg of CO₂ / Year

6 0
3 years ago
How many moles are in 1.93x1023 particles of Na3PO4?
Tresset [83]

Answer:

<h3>The answer is 0.32 moles</h3>

Explanation:

To find the number of moles given the number of entities we use the formula

n =  \frac{N}{L}  \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

N = 1.93 × 10²³ particles

We have

n =  \frac{1.93 \times  {10}^{23} }{6.02 \times  {10}^{23 } }  \\  = 0.320598006...

We have the final answer as

<h3>0.32 moles</h3>

Hope this helps you

6 0
3 years ago
Read 2 more answers
Which formula represents the compound commonly known as phosphine <br> PH<br> PH2<br> PH3<br> PH4
AveGali [126]
The answer is C). PH3
4 0
3 years ago
Read 2 more answers
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