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Papessa [141]
3 years ago
15

Who discovered Oxygen element

Chemistry
1 answer:
My name is Ann [436]3 years ago
5 0
Joseph Priestley and Carl Wilhelm Scheele
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Remember that c is always about 300,000 km/s. Use the formula you identified to explain how the two factors in the formula are r
Korvikt [17]

Answer:

Explanation:Remember that c is always about 300,000 km/s. Use the formula you identified to explain how the two factors in the formula are related on the electromagnetic spectrum.

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2 years ago
What is the molarity of a solution made with 87g of Mgo dissolved in enough water to make
JulsSmile [24]

Answer:

2.70 M.  

Explanation:

Molar mass of MgO = 24.3 + 16 = 40.3.

A molar solution will contain 40.3g in 1 Litre.

So 800 mL of 1 molar solution will contain 0.8* 40.3 g MgO.

So the molarity of the given solution

= 87 / (0.8*40.3)

= 2.699 M.

3 0
3 years ago
At what point on the roller coaster do the riders have the greatest amount of potential energy?
Anna007 [38]

Answer:

Point C

Explanation:

Point C has the greatest potential energy because it is at that point that the riders will have maximum height

5 0
2 years ago
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A gas has a pressure of 2.31 atm and occupies
jenyasd209 [6]

Answer:

The pressure of the gas after getting compressed is 1.92 L.

Explanation:

To calculate the new pressure, we use the equation given by Boyle's law. This law states that pressure is directly proportional to the volume of the gas at constant temperature.  

The equation given by this law is:

P_1V_1=P_2V_2  (At constant temperature)

where,

P_1\text{ and }V_1 are initial pressure and volume.

P_2\text{ and }V_2 are final pressure and volume.

We are given:

P_1=2.31 atm\\V_1=8 L\\P_2=?mmHg\\V_2=1.92 L

Putting values in above equation, we get:

2.31 atm\times 8 L=P_2\times 1.92 L

P_2=\frac{2.31 atm\times 8 L}{1.92 L}

P_2=9.625 atm

The pressure of the gas after getting compressed is 1.92 L.

4 0
3 years ago
Which are formed as glaciers retreat and leave debris behind in mounds at the front of their farthest advance?
Natali5045456 [20]
It seems that you have missed the given options for this question which are the following: <span>A. glacial striations B. terminal moraines C. eskers D. cirques
Anyway, the correct answer would be option B. The one that are formed as glaciers retreat and leave debris behind in mounds at the front of their farthest advance are terminal moraines. Hope this answer helps.</span>
7 0
3 years ago
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