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Anika [276]
2 years ago
13

What is the mass number of a single atom of magnesium-25?

Chemistry
1 answer:
Masja [62]2 years ago
3 0

Answer: It is approximately 24.985837

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I need help with #4 please
Sholpan [36]

Answer:

1. Land 2. open 3. broken 4. Lava matter 5. Force of the plates

3 0
3 years ago
using the symbol M for the element, write the chemical formula for the compound that forms when element M reacts with iodine.
Anon25 [30]

Answer : The chemical formula for the compound is, MI

Explanation :

When the element 'M' react with the I_2 to give MI.

The balanced chemical reaction is,

2M+I_2\rightarrow 2MI

In this reaction, 'M' is in mono-atomic form and I_2 is in diatomic form.

By the stoichiometry,

2 moles 'M' react with the 1 mole of I_2 to give 2 moles of MI.

Therefore, the chemical formula of the compound is, MI


6 0
3 years ago
Read 2 more answers
Identify the process in which the entropy increases. Identify the process in which the entropy increases. the phase transition f
diamong [38]

Answer:

The phase transition from a solid to a gas.

Explanation:

Entropy is related to the moles of gases available. The more gaseous moles, the higher the entropy.

<em>Identify the process in which the entropy increases.</em>

  • <em>the phase transition from a solid to a gas</em>. YES. There are more gaseous moles available so entropy increases.
  • <em>a decrease in the number of moles of a gas during a chemical reaction</em>. NO. This causes a decrease in entropy.
  • <em>the phase transition from a liquid to a solid</em>. NO. There is almost no change in the entropy in this process.
  • <em>the phase transition from a gas to a liquid</em>. NO. There is a decrease in entropy in this process.
  • <em>the phase transition from a gas to a solid</em>. NO. There is a decrease in entropy in this process.
7 0
4 years ago
In reality, reactants don't have to react in perfect whole-numbers of moles. In a two-reactant synthesis reaction, usually one
Fofino [41]

Answer:

srry i cant help u with this im so confuse like u just put all of it on there how would anybody answer tht!

?!Explanation:

5 0
3 years ago
At a pressure of 1.76 atm and 305 K, a certain gas has a volume of 350.0 mL. What will be the new volume of this gas under STP.​
Maksim231197 [3]

Answer:

hi

Explanation:

I'm just figuring this out

4 0
3 years ago
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