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BARSIC [14]
3 years ago
9

I need help with this :/

Chemistry
1 answer:
uranmaximum [27]3 years ago
6 0
Ok please tell me what exactly you need help with

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A weather balloon is filled with helium that occupies a volume of 5.37 104 L at 0.995 atm and 32.0°C. After it is released, it r
svp [43]

Answer:

The new volume is 63583 L

Explanation:

Step 1: Data given

The initial volume of the balloon = 5.37 * 10^4 L

The initial pressure = 0.995 atm

The initial temperature = 32.0 °C = 305.15 K

The pressure decreased to 0.720 atm

The temperature decreased to -11.7 °C = 261.45 K

Step 2: Calculate the new volume

P1*V1 / T1 = P2*V2/T2

⇒with P1 = the initial pressure = 0.995 atm

⇒with V1 = the initial volume = 5.37 *10^4 L

⇒with T1 = the initial temperature = 305.15 K

⇒with P2 = the decreased pressure = 0.720 atm

⇒with V2 = the new volume = TO BE DETERMINED

⇒with T2 = the decreased temperature : 261.45 K

(0.995 * 5.37*10^4)/305.15 = (0.720 * V2) / 261.45

V2 = 63583 L

The new volume is 63583 L

8 0
2 years ago
A 23.9g object was submerged into 50.5ml of water. If the water rose to 89.4ml then what is the object's density?
timama [110]

Answer:

50.2

Explanation:

4 0
3 years ago
In which region is the substance in both the solid phase and the liquid phase ?
sergiy2304 [10]

Answer:  Region 3

Explanation:  The temperature and time graph suggests that region 3 is the region in which the substance can co exist in both the phases that is solid phase and liquid phase.

Region 1 explains that the the solid has just started melting and there occurs a break point and then region 2 again explains that the solid is taking more time with temperature to get converted into the liquid and thus region 3 explains the equilibrium between the two phases.

3 0
3 years ago
Read 2 more answers
When comparing fifteenth- and twenty-first- century forensic-science tools available for document examination, which modern tool
Whitepunk [10]
Many forensic tools that are available now were not available in the 15th century. For starters, microscopes did not exist in the fifteenth century so no finer details could be examined on documents. Now, there exist many different types of microscopes. Moreover, with new methods such as carbon dating, the age of different documents may be determine. 
All of these differences from the fifteenth century have helped forensic analysts better analyze documents than analysts in the past could.
7 0
3 years ago
Please put the molecular compound names for these compound formulas. Answer as many as you want. Thanks
never [62]

Answer:

Explanation:

N₂O₄

Dinitrogen tetroxide. It is also known as nitrogen tetroxide.

SO₃

Sulfur trioxide

NO

Nitric oxide

NO₂

nitrogen dioxide

As₂O₅

Arsenic pentoxide

PCl₃

Phosphorus trichloride

CCl₄

Carbon tetrachloride

H₂O

Water

SeF₆

Selenium hexafluoride

N₂O₄

Dinitrogen tetroxide

SO₃

Sulfur trioxide

5 0
3 years ago
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