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2 years ago

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A welding tank of oxygen gas has a volume of 100. L. The oxygen in the tank is at a pressure of 95 atm and a temperature of 30.

°C. What is the mass of oxygen gas in the tank?
Please show work! I am having trouble understanding this so I'd love to see how to do it

1 answer:

Anuta_ua [19.1K]2 years ago

5 0

Answer:

blah blah blah blah blah blah blah blah blah blah blah

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katovenus [111]

Answer:

A. 6atm

Explanation:

Using pressure law equation:

P1/T1 = P2/T2

Where;

P1 = initial pressure (atm)

T1 = initial temperature (K)

P2 = final pressure (atm)

T2 = final temperature (K)

According to this question;

P1 = 3 atm

P2 = ?

T1 = 120K

T2 = 240K

Using P1/T1 = P2/T2

3/120 = P2/240

Cross multiply

240 × 3 = P2 × 120

720 = 120P2

P2 = 720/120

P2 = 6atm

4 0

2 years ago

A 0.105 L sample of an unknown HNO 3 solution required 35.7 mL of 0.250 M Ba ( OH ) 2 for complete neutralization. What is the c

oksano4ka [1.4K]

Answer: 0.17M

Explanation:

The equation for the reaction is :

2HNO3 + Ba(OH)2 —> Ba(NO3)2 + 2H2O

From the balanced equation, we obtain :

nA = mole of acid = 2

nB = mole of the base = 1

From the question, we obtain:

Va = Vol. Of acid = 0.105L

Ma = conc. Of acid =?

Vb = Vol of base = 35.7 mL = 0.0357L

Mb = conc. of base = 0.25M.

We solve for the conc. of the acid using:

MaVa / Mb Vb = nA / nB

(Ma x 0.105) / (0.25x0.0357) = 2

Cross multiply to express in linear form. We have:

Ma x 0.105 = 0.25 x 0.0357 x 2

Divide both side by 0.105. We have

Ma = (0.25 x 0.0357 x 2) / 0.105

Ma = 0.17M

Therefore the concentration of the acid(HNO3) is 0.17M

3 0

2 years ago

What is the name for the columns in the periodic table?

astraxan [27]

Answer:

On the periodic table, each column is called a group. So, the answer is D. groups.

Explanation:

A) is incorrect because the rows on the periodic table are called periods.

B) is incorrect because the elements are what is organized on the periodic table.

C) is incorrect because the periods are the rows on the periodic table.

D) is the correct answer because the columns on the periodic table are called groups.

Hope that helps!! Please give me brainliest because I need 3 more brainliest to become an Expert!!

7 0

1 year ago

Look at the Recording station detector on the upper left side of the Gizmo. What happens when the seismic waves hit the recordin

Ne4ueva [31]

Answer:

I don’t know what recording station you’re referring to but, When seismic waves reach the seismograph, a graphical record, or seismogram, is produced

Explanation:

4 0

2 years ago

Consider the condensed structure shown.

neonofarm [45]

Answer:

$C_{5}H_{10}\:C_{2}H_{6}$

Explanation:

Expanded Structure shows all the atoms and the bonds of the molecule. It is important to remember, each Carbon molecule have four bonds, while the Hydrogen just one. So:

1) $C_{5}H_{10}$

Pentene. 5 Carbon molecules, 10 Hydrogen molecules. It's an isomer, so this organic compound has multiple arrangements.

2) $C_{2}H_{6}$

Ethane. 2 Carbon and 6 Hydrogen Molecules. Check it below.

7 0

2 years ago