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Ann [662]
3 years ago
7

Why are changes in phase physical changes?

Chemistry
1 answer:
ehidna [41]3 years ago
3 0
Weathering and chemical substance weathering
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What two sublevels of orbitals contain valence electrons? (s, p, d, or f)?
LuckyWell [14K]
The two sublevels are s and p. These are the main group sublevels
5 0
3 years ago
a chemist dissolves 0.564 moles of manganese (IV) oxide (MnO2) in water, and adds enough water to make 0.510 L of solution. Calc
ladessa [460]

Answer:

The molarity of the solution is 1.1 \frac{moles}{liter}

Explanation:

Molarity is a measure of the concentration of that substance that is defined as the number of moles of solute divided by the volume of the solution.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

molarity=\frac{number of moles of solute}{volume}

Molarity is expressed in units \frac{moles}{liter}

In this case

  • number of moles of solute= 0.564 moles
  • volume= 0.510 L

Replacing:

molarity=\frac{0.564 moles}{0.510 L}

Solving:

molarity= 1.1 \frac{moles}{liter}

<u><em>The molarity of the solution is 1.1 </em></u>\frac{moles}{liter}<u><em></em></u>

4 0
3 years ago
Calculate the [OH-]<br> [H+]=0.000025
Harman [31]

Explanation:

There are several ways to define acids and bases, but pH and pOH refer to hydrogen ion concentration and hydroxide ion concentration, respectively. The "p" in pH and pOH stands for "negative logarithm of" and is used to make it easier to work with extremely large or small values. pH and pOH are only meaningful when applied to aqueous (water-based) solutions. When water dissociates it yields a hydrogen ion and a hydroxide.

3 0
3 years ago
The rising magma that may result from this type of plate movement may produce<br><br> HELP
nirvana33 [79]

Volcanic islands, seamounts, guyouts

Explanation:

The magma rising from this type of plate movement may produce under water volcanic activities.

The magma here would be mafic - ultramafic because it is produced from melting of oceanic plates.

As the subducting oceanic plate melts and begins to rise, it will settle and cool on the ocean floor resulting in the formation of massive and extensive seamounts.

With time, they outgrow the ocean level and forms volcanic Islands.

learn more:

lithosphere brainly.com/question/9582362

#learnwithBrainly

7 0
3 years ago
What is the name of this compound?
Mashcka [7]

Answer:

B. ethylamine.

Explanation:

  • Since the compound contains NH₂, it is an amine compound.
  • The alkyl group C₂H₅- contains 2 C atoms (ethyl group).

<em>So, the compound is ethylamine.</em>

<em />

3 0
3 years ago
Read 2 more answers
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