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3 years ago

What are the eleven elements that are gas freezing?

Chemistry

2 answers:

Leona [35]3 years ago

8 0

Answer:

hydrogen, helium, oxygen, nitrogen, argon and neon, fluorine, chlorine, krypton, xenon and radon

Explanation:

kenny6666 [7]3 years ago

4 0

hydrogen, helium, oxygen, nitrogen, argon, neon, fluorine, chlorine, krypton, xenon and radon i believe >__< not in any order ahaha

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The gas pressure in an aerosol can is 1.8 atm at 25°c. if the gas is an ideal gas, what pressure would develop in the can if it

Ratling [72]

For ideal gases at constant volume, you can use the law of Gay - Lussac:

P / T = constant => P1 / T1 = P2 / T2

=> P2 = T2 * P1 / T1

And remember you have to use absolute scale of temperature.

T1 = 25 + 273.15 = 298.15 K

T2 = 475 + 273.15 = 748.15 K

=> P2 = 748.15 K * 1.8 atm / 298.15 K = 4.5 atm

Answer: 4.5 atm

3 0

3 years ago

Gallium (Ga) consists of two naturally occurring isotopes with masses of 68.926 and 70.925 amu. (a) How many protons and neutron

pav-90 [236]

Answer:

$neutrons_{Ga-69}=38\\\\neutrons_{Ga-71}=40$

Explanation:

Hello!

In this case, since isotopes of the same element have the same number of protons and electrons but different atomic mass, we can compute the number of neutrons by subtracting the number of protons to the atomic mass of the isotope; thus, for Ga-69 and Ga-71 (rounded up to whole numbers), we obtain:

$neutrons_{Ga-69}=69-31=38\\\\neutrons_{Ga-71}=71-31=40$

Best regards!

8 0

3 years ago

How many mol of butan-1-ol are in 10.0 mL of butan-1-ol?

ELEN [110]

Answer:

2) 0.109 mol

Explanation:

The density of butan-1-ol is 0.8098g/mL. And its molar mass is: 74.121g/mol.

First, we need to convert volume of butan-1-ol to mass:

10.0mL * (0.8098g / mL) = 8.098g of butan-1-ol

Now, we need to convert these grams to moles using molar mass:

8.098g * (1mol / 74.121g) = 0.109 moles of butan-1-ol

Right answer is:

7 0

3 years ago

HELP PLEASE!!

Deffense [45]

Answer:

Explanation:

1.) i would use a scale or a beacon

2.)well beacons are easy you fill them with water and how ever hight the water goes up is the amount of valume the lego or whatever your using has

3.)beacon

4.)you look at the numbers on the side or front derr haha

hope this helped

7 0

3 years ago

Read 2 more answers

A gas mixture contains each of the following gases at the indicated partial pressures: , 221O2torr , N2,131 torr; and He 131 tor

nlexa [21]

<h3>Answer;</h3>

0.433 g N2 
0.293 g O2 
0.0367 g He

<h3>Explanation and solution;</h3>

We can start by getting the total pressure; which will be the sum of the partial pressure of each gas.

221 torr + 131 torr + 131 torr

P (total) = 483 torr total

Using the equation

n = PV / RT, we can determine the total number of moles of the mixture

= (483 torr) x (1.30 L) / ((62.36367 L Torr/K mol) x (25.0 + 273.15 K))

= 0.033769 mol gases total

Therefore; we can determine the mass of each gas;
Nitrogen gas

N2 = 28.01 g/mol

= (0.033769 mol) x ( 221 torr N2/ 483 torr) x (28.01 g N2/mol) 

= 0.433 g N2 

Oxygen gas

 O2 = 32 g/ mol 

 =(0.033769 mol) x (131 torr O2/ 483 torr) x (32 g O2/mol)

 = 0.293 g O2

Helium gas

 He = 4 g/mol

= (0.033769 mol) x (131 torr He/ 483 torr) x (4.00 g He/mol)

= 0.0367 g He

8 0

3 years ago

Read 2 more answers