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Flauer [41]
3 years ago
5

Which nuclear reaction is classified as alpha decay

Chemistry
1 answer:
Natasha2012 [34]3 years ago
7 0
There's three types of decay: alpha beta and gamma.
*Alpha decay is the emission of a helium nucleus (2protons and 2 neutrons)
*Beta decay is the emission of an electron or a positron (e^{-1} or e^{+1} ). It does affect the weight of the atom.
*Gamma decay is the emission of photons with a high energy. It does affect the weight of the atom.

To answer the question, any nuclear reaction which decreases the atomic weight by 4 and the protons by 2 is an alpha decay. (release of an alpha or helium nucleus)
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Calculate the theoretical atom economy for each reaction.
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4 years ago
A 1.92 mol sample of hydrogen gas occupies 22.2 L. How many mol of hydrogen are needed to fill a 102.1 L container at the same p
tia_tia [17]

Answer:

8.83 moles of Hydrogen

Explanation:

We are told that 1.92 moles of H2 occupies 22.2 L at a certain pressure and temperature, and we are asked to calculate the quantity of moles of H2 are necessary to fill a container of 102.1 L. So, if the pressure and temperature are constant, then the equality expressed before 1.92 H2 moles = 22.2 L maintains. Therefore, we can calculate what is being asked as follows:

22.2 L ----- 1.92 H2 moles

102.1 L ---- x = (102.1 L × 1.92 H2 moles)/22.2 L = 8.83 H2 moles

This means that 8.83 H2 moles are necessary to fill a 102.1 L container at a certain pressure and temperature.

8 0
3 years ago
At 82K, a gas has a volume of 4.60L. What would be the volume of the gas at 70K?
Oliga [24]

Answer:

V₂ = 4.0L

Explanation:

Decreasing temperature => Decreasing Volume (Charles Law)

For a given volume, use a temperature ratio that will give a smaller volume.

Volume at lower temp = 4.6L(70K/82K) = 4.0L ... Using (82K/70K) would give a larger volume => contrary to temperature effects on gas volumes when pressure and mass are kept constant.

Pressure effects on Gas Volumes:

Note: The same idea is applied to pressure effects on gas volumes also except that changes in pressure affect gas volumes indirectly. That is, an increase in pressure => decrease in volume, or a decrease in pressure => increase in volume. Boyles Law => V ∝ 1/P.

Given a gas volume of 4.60L at 760mmHg, what is volume at 848mmHg?

Increasing pressure => Decreases Volume (Boyles Law)

For the given volume use a pressure ratio that will give a smaller volume.

Volume at higher pressure = 4.6L(760mm/848mm) =4.1L. Using (848mm/760mm) would give a larger volume => contrary to pressure effects on gas volume when temperature and mass of gas are kept constant.

4 0
3 years ago
A square block of steel with volume 10 cm3 and mass of 75 g is cut precisely in half the density of the two smaller pieces is no
Roman55 [17]
The density of a substance is its mass per unit volume, given by the mass divided by the volume. Density depends on the substance of concern and doesn't matter whether one has a little amount of it or a whole full of it. Therefore, the density of the two smaller pieces is now the same as the original density.
3 0
3 years ago
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