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abruzzese [7]
2 years ago
15

PLEASE HELP!! FAST!!

Chemistry
1 answer:
Blizzard [7]2 years ago
5 0

Explanation:mok in this we learning about sum multiplication on a chart but  it to small but the answer 52

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Helppppppppppppppppppppppp
arsen [322]

ITS CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

8 0
3 years ago
Polonium-218 undergoes beta decay, converting a neutron into a proton. Then the daughter isotope undergoes another beta decay, a
sergij07 [2.7K]

Answer: ^{218}_{84}Po \rightarrow ^{218}_{85}At + ^{0}_{-1}e is the correct equation for beta decay.

Explanation:

When a beta particle, that is, ^{0}_{-1}e is emitted in a radioactive decay then it is known as beta decay.

Therefore, beta decay of Polonium-218 is as follows.

^{218}_{84}Po \rightarrow ^{218}_{85}At + ^{0}_{-1}e

Therefore, we can conclude that ^{218}_{84}Po \rightarrow ^{218}_{85}At + ^{0}_{-1}e is the correct equation for the given beta decay.  

8 0
3 years ago
HELP ASAP!!! WILL GIVE BRAINLIEST! THESE FOUR QUESTIONS PLEASE!
Vesna [10]

1. 12.992 L

2. 2.42 moles

3. 275.52 L

4. 567.844 g

<h3>Further explanation</h3>

Given

moles and volume at STP

Required

mass, volume and moles

Solution

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.

1. 0.58 moles ammonia :

Volume = 0.58 moles x 22.4 L = 12.992 L

2. 77.5 grams of O₂ :

Moles = 77.5 grams x (1 mol/32 grams) = 2.42

3. 12.3 mole of Bromine gas :

Volume = 12.3 mole   x (22.4 L/1 mole) = 275.52 L

4. 4.8 moles iron(II)chloride :

Mass = 4.48 moles x molar mass ( 126,751 g/mol) = 567.844 g

5 0
3 years ago
The coldest temperature ever recorded on Earth was -128.6°F (recorded at Vostok Station, Antarctica, on July 21, 1983). Express
Sever21 [200]

Answer : The correct option is, -89.2^oF\text{ and }183.9K

Explanation :

The conversion used for the temperature from Fahrenheit to degree Celsius is:

^oC=(^oF-32)\times \frac{5}{9}

where,

^oF = temperature in Fahrenheit

^oC = temperature in centigrade

The conversion used for the temperature from degree Celsius to Kelvin is:

K=273.15+^oC

where,

K = temperature in Kelvin

^oC = temperature in centigrade

As we are given the temperature in Fahrenheit is, -10

Now we have to determine the temperature in degree Celsius.

^oC=(^oF-32)\times \frac{5}{9}

^oC=(-128.6^oF-32)\times \frac{5}{9}

^oC=-89.2

Now we have to determine the temperature in Kelvin.

K=273.15+^oC

K=273.15+(-89.2^oC)

K=183.9

Therefore, the temperature in degree Celsius and Kelvin are, -89.2^oF\text{ and }183.9K

7 0
3 years ago
Chemistry is the study of all of the following EXCEPT
ValentinkaMS [17]
B - projectile motion
4 0
3 years ago
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