Chemistry test chap 14 and 15

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The volume of a gas with a pressure of 1.2 atm increases from 1.0 L to 4.0 L. What is the final pressure of the gas, assuming constant temperature?

0.30 atm

=760 torr

1 atm

1 atm =

101.3 kappa

A tank contains helium gas at 1.50 atm. What is the pressure of the gas in mmHg?

1140 mmhg

A gas sample with a volume of 4.0 L has a pressure of 750 mmHg and a temperature of 77°C ° C . What is the new volume at 277°C ° C and 0.33 atm?

19 L

A gas occupies a volume of 500. Milliliter at a pressure of 380. Torr and a temperature of 298 K. At what temperature will the gas occuppy a volume of 250. Milliliter and have a pressure of 760. Torr?

298 k

A sample of nitrogen gas at 110 K has a pressure of 1.0 atm. When the temperature is increased to 360 K at constant moles and volume, the new pressure will be

3.3 atm

A sample of gas has a volume of 40.0 L at a pressure of 722. torr. What is the volume, in liters, of the gas at 753 torr, if there is no change in temperature and the amount of gas?

38.4L

Alpha particles have an atomic mass equal to ____.

4

A sample of nitrogen gas had a volume of 500. mL, a pressure in its closed container of 740. torr, and a temperature of 25 °C. What was the new volume of the gas when the temperature was changed to 50. °C and the new pressure was 760. torr?

528 mL

A balloon has a volume of 646 mL at 19°C ° C . If the temperature drops to 8°C ° C , what is the new volume if the pressure remains at 1.00 atm the entire time.

622mL

63 tor =

63 mmhg

11.9 kPa =

89.3 mmhg

700. Mmhg equals

93.3 kPa

An atom has 98 protons and a mass of 249. If it undergoes alpha decay, what are the number of protons and mass #, respectively, in the resulting nucleus? ______

96,245

The total pressure in a mixture of gases is equal to the partial pressure of

All the gases added together

A (n)___ particle is the largest particle.

Alpha

When a(n)_____________________ is emitted from the nucleus, the mass number decreases by 4 amu.

Alpha particle

In beta decay,

An electron is emitted

For-220 undergoes alpha decay. What element will be formed

At

Carbon-14 decays naturally through a loss of a __________ particle into a stable isotope of a nitrogen

Beta

Positron is when

Both of the numbers don't change

In alpha decay, the atomic number is ___ and the mass # is _______.

Decreased by 2, decreased by 4

When an alpha particle is emitted from an unstable nucleus, the atomic mass number of the nucleus _______ .

Decreases by 4

A positron is a particle emitted from the nucleus that has the same mass as a(n)

Electron

1 atm = 1 torr

False

A dosimeter is a machine that conducts electricity when is comes into contact with radiation

False

Alpha decay is more dangerous than beta decay

False

Alpha decay is never accompanied by gamma ray emission

False

Beta particles can be stopped by skin

False

Ernest Rutherford discovered alpha and beta decay

False

In a positron decay a neutron is converted to a proton

False

The amount of gas has no affect on the pressure of the gas

False

There are five different types of radioactivity emissions

False

gasses compress much more easily than solids and liquids because their particles are closer together

False

If Au -198 undergoes beta decay, which of the following would be formed

Hg-198

What happens when a gas is heated?

It expands

Which of the following shows a radioisotope?

K-29

What unit of temperature is used in gas law calculations?

Kelvin

Which measurement describes the pressure of a gas

Mmhg

A can of shaving cream has an internal pressure of 1.2 atm at 25 degrees Celsius. The can of shaving cream was heated to a temperature of 200. degrees Celsius. A can of shaving cream can withstand an internal pressure of 2.2 atm. Will the can explode?

No, it will not explode

In beta decay, a neutron is converted to a

Proton

The process where an unstable nucleus releases small particles so it can become more stable is called

Radioactivity

Gamma rays cannot penetrate

Several meters of thick concrete

= 273K or 0oC

Standard temperature

To get neutrons you

Subtract the two numbers

Alpha decay is when

The top number decreases by 4 and the bottom decreases by 2

1 torr = 1 mmHg

True

A positron is a type of antimatter

True

Positrons dissolve when they come into contact with an electron and produce gamma rays

True

The curie and becquerel are units of radiation

True

You can never use Celsius in a gas law calculation, even if you are looking for an answer in Celsius

True

Beat decay

When the top numbers stay the same and the bottom numbers add 1

instrument for measuring atmospheric pressure

barometer


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