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natima [27]
3 years ago
8

( urgent help needed!! 50pts + brainliest )

Chemistry
2 answers:
Ivanshal [37]3 years ago
5 0

Answer:

Thorium-234 option a .......

Marizza181 [45]3 years ago
4 0

238 4 234

U --> α + Th

92 2 90

The answer is A Thorium.

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The diagram below shows a cell placed in a solution.
Sholpan [36]

it will expand as water moves into it.


3 0
3 years ago
Salt is an ionic compound that is produced when a cation and an anion from an acid-base reaction combine, and solutions of salts
Andrej [43]

Answer:

a. True

Explanation:

The statement given regarding salt is correct,

Salt is ionic in nature, as it is composed of a positive ion, i.e. , cation and a negative ion, i.e. , anion.

Salt can be made by the combination of respective acid and base.

There are three nature of salt, acid, base and neutral.

Hence, from the given statement of the question,

The correct option is a. True.

3 0
3 years ago
How many moles of oxygen (O2) are present in 33.6 L of the gas at 1 atm and 0°C?
maw [93]

Answer: 1.5

Explanation:

Just took the test on E2020!

3 0
3 years ago
Please help me with this question<br> Thank you!
Elza [17]

Answer:

B. 3+

Explanation:

When Fe²⁺ loses an electron, it becomes an Fe³⁺ ion.

   The loss of an electron in an atom makes the atom becomes positively charged. Further losing electrons makes the atom more positive.

 For the given ion;

 Fe²⁺   if it loses an electron more, it becomes Fe³⁺.

The expression is given as:

         Fe²⁺    →    Fe³⁺  +  e⁻

8 0
3 years ago
Must all species reproduce in order for the species to survive? *
xz_007 [3.2K]

Answer:

NOPE

Explanation:

7 0
3 years ago
Read 2 more answers
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