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3 years ago

Molarity is most often used when the solute is a solid, and the solvent is a solid. True or false

Chemistry

2 answers:

Mandarinka [93]3 years ago

6 0

Answer:

true

Explanation:

liberstina [14]3 years ago

3 0

Answer:

false

Explanation:

Molarity refers to the amount of solute present in a solution. Molarity is usually expressed in the unit, moles per decimeter cubed or moles per litre. It can be used to estimate the concentration of a solution irrespective of whether the solute is solid, liquid or gas. It does not particularly apply to solid solutes.

Acid solutions which usually consists of liquid solutes are also expressed in molarity units as well as solid solutes.

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Why is it impossible to have an undiscovered element that would fit between sodium and magnesuim

Stolb23 [73]

Answer:

Sodium has 11 protons and Magnesium has 12. The way that the periodic table is set up doesn't allow for any elements to be in between. The element would have to have 11.5 protons, which is impossible

4 0

3 years ago

A jeweler is making sapphire rings using 2 sapphires on every 1 ring. If the jeweler has 12 sapphires and 10 rings, what is the

user100 [1]

Answer: The theoretical yield is 6 rings.

Explanation:

Theoretical yield is predicted or estimated value.

Jeweler used 2 sapphires for 1 ring

Then for each sapphire there will be = $\frac{1}{2}$ rings are used

For 12 sapphire = $\frac{1}{2}\times 12=6 rings$ will be used

Out of 10 rings 6 rings with 2 sapphires will be made.

The theoretical yield is 6 rings.

7 0

3 years ago

Read 2 more answers

Help! Locks at 12

marta [7]

Answer is #4 (neutrons)

Explanation:

Total mass before the reaction is 236 amu. The total mass of the two elements is 233 amu. This means that there are 3 amus carried by element X. Looking at the total atomic number of the two elements after reaction, it's 92, the same as the one at the beginning. This means that element X has zero atomic number, which could only be a neutron.

4 0

3 years ago

Read 2 more answers

Given the unbalanced equation below, answer the following: Calculate the number of liters of 3.00 M lead (II) iodide solution pr

mr_godi [17]

The number of liters of 3.00 M lead (II) iodide : 0.277 L

<h3>Further explanation</h3>

Reaction(balanced)

Pb(NO₃)₂(aq) + 2KI(aq) → 2KNO₃(aq) + PbI₂(s)

moles of KI = 1.66

From the equation, mol ratio of KI : PbI₂ = 2 : 1, so mol PbI₂ :

$\tt \dfrac{1}{2}\times 1.66=0.83$

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

$\large \boxed {\bold {M ~ = ~ \dfrac {n} {V}}}$

Where

M = Molarity

n = Number of moles of solute

V = Volume of solution

So the number of liters(V) of 3.00 M lead (II) iodide-PbI₂ (n=0.83, M=3):

$\tt V=\dfrac{n}{M}\\\\V=\dfrac{0.83}{3}\\\\V=0.277~L$

5 0

3 years ago

If you are playing pool and hit the cue ball at the stationary 8 ball, what should happen?

jolli1 [7]

Answer If a ball goes into a pocket and bounces back on to the playing surface, it is not considered pocketed. If it is the 8-ball, it is not a win. If it is the cue ball, it is not a scratch.

Explanation:

3 0

3 years ago