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Veronika [31]
3 years ago
5

Which would result in radioactive decay? Check all that apply.

Chemistry
2 answers:
kaheart [24]3 years ago
6 0

Answer:

2, 3, and 5

Explanation:

Just did it on edgen

shepuryov [24]3 years ago
4 0

Answer:

a neutron-to-proton ratio of 1:2 in a large nucleus

any isotope of the element uranium, which has atomic number 92

a nucleus that contains 90 protons and 100 neutrons

Explanation:

Basically the the larger a nucleus gets the more unstable it becomes. that's why all elements 87 and above are radioactive

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The diagram and data below represent gas and the conditions of pressure, volume, and temperature of the gas in a rigid cylinder
Sedaia [141]

Answer:

2.3 L

Explanation:

when you have this eqaution you use P1V1T2=P2V2T1.

since you are looking for volume of gas cylinder that means you are looking for V2.

so you have your given P= 1.0 atm, V=2.5L, T=298K.

They ask you to use STP or standard pressure and temperature.

STP P= 1atm, STP T=273 K

so you are looking for V2 meaning you are going to get V alone so your new equation is P1*V1*TS/ P2* T1= V2

so you now substitue so its now 1*273*2.5/ 1* 298= V

682.5/ 298= V

Lastly V= 2.2902 and you round to tenths so now you have

V= 2.3 L

5 0
3 years ago
Choose the answer below that gives the correct chemical symbol and classification (metal, metalloid, or nonmetal) for the elemen
Zielflug [23.3K]

Answer: B. The element called tin is a metal with the chemical symbol Sn.

Explanation:

A is incorrect because Ni is Nickel, not Niobium.

C is incorrect because Carbon is a nonmetal and its symbol is C, not Cr.

D is incorrect because Copper's symbol is Cu, not Ce.

E is incorrect because As is the symbol for Arsenic, not Astatine.

6 0
3 years ago
12. How is the melting point of a substance related to its freezing point? Both indicate the temperature at which the solid and
krok68 [10]
Both indicate the temperature at which the solid and liquid states of a substance are in equilibrium would be your answer.

This is beacause the melting point of a substance is the same as the freezing point of a substance. At this particular temp, the substance can be either a solid or a liquid. 

hope this helps!
8 0
4 years ago
Read 2 more answers
How many molecules are in 21.5G of water
NemiM [27]

Answer:

There are 6.022×1023 molecules in a mole. There are 18.01528 grams of water per mole of water. in 1g water

Explanation:

please Mark my answer in brainlist

6 0
3 years ago
True or False: A flame test can be used to identify the presence of certain elements in a compound?
Anna11 [10]
Your answer to this question would be True.

Hope I helped:P 
3 0
3 years ago
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