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Brut [27]
3 years ago
8

Which of the following is true of the Sun? *

Chemistry
2 answers:
Liula [17]3 years ago
7 0

Answer:

The Sun is the closest star to Earth.

Nadya [2.5K]3 years ago
4 0
The Sun is the closest star to Earth
You might be interested in
If I have 21 liters of gas held at a pressure of 78 atm and a temperature of 900 K, what will
shusha [124]

Answer:

30.33L

Explanation:

Using Boyle's law which states that the volume of a given mass of gas is inversely proportional to the pressure, provided temperature remains constant  and Charles law states that the volume of a given mass of gas is directly proportional to the temperature provided the pressure remains constant

P1V1/T1 = P2V2/ T2

P1 =  78atm, V1 = 21L , T1 = 900K

P2 = 45atm, V2 = ? , T2 =750K

78× 21 / 900 = 45×V2 / 750

1638/900 = 45 V2 / 750

1638×750 = 900×45V2

1228500 = 40500V2

Divide both sides by 40500

1228500÷40500= V2

V2 = 30.33L

I hope this was helpful, please mark as brainliest

6 0
3 years ago
Metals can be highly purified using electrolysis. Which equation best reflects the overall process of purifying copper?
makvit [3.9K]

Answer:

A. Cu^+2(aq)cathode ---> Cu^+2(aq)anode

Explanation:

Electrolysis is the process in which current is passed through a solution thereby causing a chemical change at the anode and cathode. Copper is being purified using electrolysis by using impure copper at the anode and pure copper at the cathode. This pure and impure copper are placed in a copper(ii)sulfate electrolyte solution and dc current is made to pass through it.  The resulting changes at the anode and cathode are given by the equation:

cathode: Cu²⁺  + 2e⁻    ⇒     Cu

anode:    Cu     ⇒       Cu²⁺  + 2e⁻

3 0
3 years ago
Read 2 more answers
How many moles are in 5.96g of MgCO,?
nikdorinn [45]

Answer:

201.1046

hope that helped :)

6 0
3 years ago
What is 8mm=___cm please help me
son4ous [18]

Answer:

0.8 cm

Explanation:

Hope that helped :D

5 0
3 years ago
A scientist dissolves 10 g of NaOH into 0.275 L of water. What is the
Damm [24]
The answer is 0.9091 M
5 0
3 years ago
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