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dimulka [17.4K]
3 years ago
8

Question 3 of 5

Chemistry
2 answers:
miskamm [114]3 years ago
7 0

Answer:

D.Blue

Explanation:

Alexxandr [17]3 years ago
6 0

Answer:

Answer is D.Blue.

Explanation:

The hottest stars tend to appear blue or blue-white, whereas the coolest stars are red.

I hope it's helpful!

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Which best defines partial pressure in a mixture of gases?
VladimirAG [237]

Answer:

Pressure that is exerted by one gas as if it occupied a container by itself.

7 0
3 years ago
Read 2 more answers
What kind of crystalline solid is copper?
melisa1 [442]
Metallic crystalline
8 0
3 years ago
2. A sample of gas has a pressure of 195 kPa and a volume of 3.50 L. If the pressure
zhannawk [14.2K]

Answer:

<h2>4.55 L</h2>

Explanation:

The new volume can be found by using the formula for Boyle's law which is

P_1V_1 = P_2V_2

Since we're finding the new volume

V_2 =  \frac{P_1V_1}{P_2}  \\

We have

V_2 =  \frac{195000 \times 3.5}{150000}  =  \frac{682500}{150000}  \\  = 4.55

We have the final answer as

<h3>4.55 L</h3>

Hope this helps you

7 0
3 years ago
I need help ASAP
vova2212 [387]

Answer:

1.4 g/cm3

Explanation:

Density = Mass/Volume

Mass = 21g

Volume = 15cm3

Density = 21/15 = 1.4

8 0
3 years ago
A 35.66g sample of copper is heated using 600j of energy. if the original temperature of the copper is 85C what is its final tem
ira [324]

This problem is providing the mass, energy, initial temperature and specific heat of a sample of copper that is required to calculate the final temperature.

Thus, we recall the general heat equation:

Q=mC(T_f-T_i)\\

Which has to be solved for the final temperature, T_f as follows:

T_f=T_i+\frac{Q}{mC}

Finally, we plug in the numbers to obtain:

T_f=85\°C+\frac{600J}{35.66g*0.38\frac{J}{g\°C} } \\\\T_f=129.3\°C

However, this result is not given in the choices.

Learn more:

  • brainly.com/question/14383794
8 0
2 years ago
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