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kvv77 [185]
3 years ago
14

Write a balanced nuclear equation for the following: The nuclide astatine-218 undergoes alpha emission to give bismuth-214

Chemistry
1 answer:
galina1969 [7]3 years ago
7 0

Answer:

^{218}_{85}At\rightarrow ^{214}_{83}Bi+^{4}_{2}He

Explanation:

Hello there!

In this case, since the radioactive reaction for the alpha emission of astatine-218 to bismith-214 involve the release of a helium atom as shown below:

^{218}_{85}At\rightarrow ^{214}_{83}Bi+^{4}_{2}He

Whereas the atomic number decreases by 2 and the mass number by 4 in agreement to the release of the Helium atom.

Regards!

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If the broccoli you ate with dinner last night had 1.3 moles of nitrogen atoms, how many
Finger [1]

Answer: 18.208710000000032

Explanation:

8 0
3 years ago
If 9.5 atms of pressure were increased to 25 atms of pressure, what would be the final volume
nordsb [41]

Answer:

The final volume of the gas is 36.1 L.

Explanation:

Given:

Initial pressure of the gas is, P_1=9.5\ atm

Final pressure of the gas is, P_2=25\ atm

Initial volume of the gas is, V_1=95\ L

Final volume of the gas is, V_2=?

Here, we shall use Boyle's Law which states that for a process under constant temperature, the pressure of the gas changes inversely with the change in volume.

Here, the pressure is increased. So, the volume of the gas is decreased.

Therefore, as per Boyle's Law:

P_1V_1=P_2V_2\\9.5\times 95=25V_2\\902.5=25V_2\\V_2=\frac{902.5}{25}\\V_2=36.1\ L

So, the final volume of the gas is 36.1 L.

4 0
3 years ago
What liquid is sour and can dissolve metal
LUCKY_DIMON [66]

Answer: In essence, Boyle defined alkalies as substances that consume, or neutralize, acids. Acids lose their characteristic sour taste and ability to dissolve metals when they are mixed with alkalies. Alkalies even reverse the change in color that occurs when litmus comes in contact with an acid.

Explanation:

8 0
3 years ago
How many moles of oxygen are present in a cylinder of 25.0 liters at a temperature of 0. °C and a pressure of 1.00 atm
Akimi4 [234]

Answer:

1.12 moles

Explanation:

To find the amount of moles, you need to use the Ideal Gas Law:

PV = nRT

In this equation,

-----> P = pressure (atm)

-----> V = volume (L)

-----> n = moles

-----> R = Ideal Gas constant (0.08206 atm*L/mol*K)

-----> T = temperature (K)

After converting the temperature from Celsius to Kelvin, you can plug the given values into the equation and solve for "n".

P = 1.00 atm                     R = 0.08206 atm*L/mol*K

V = 25.0 L                        T = 0. °C + 273 = 273 K

n = ? moles

PV = nRT

(1.00 atm)(25.0 L) = n(0.08206 atm*L/mol*K)(273 K)

25.0 = n(22.4)

1.12 = n

6 0
1 year ago
How many g are equal to 345.7 mg? what conversion factor will you use
Over [174]

Answer:

0.3477 grams

The conversion factor is 1/1000

Explanation:

347.7 mg = 0.3477 grams

1 mg = 1x10⁻³ g

1 g / 1000 mg . 347.7 mg = 0.3477 grams

3 0
3 years ago
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