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4 years ago

What happens when a solid is dissolved into a liquid

Chemistry

2 answers:

Rudik [331]4 years ago

6 0

Solid particles become evenly dispersed among liquid particles.

a_sh-v [17]4 years ago

5 0

It melts and is solves into water

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The number of molecules of nitrogen, n2, found in 500.0 g of nitrogen gas is?

8_murik_8 [283]

The molar mass of monotonic Nitrogen is 14 g/mol. Since this is diatomic Nitrogen, double that to 28 g/mol.
Next, divide total mass by molar mass, 500 g / 28 g/mol, which gives <span>17.8571 moles. A mole is defined as being 6.022*10^23 molecules, so multiply moles by molecules/mol (Avogadro's number), and we finally end up with something like 1.075 * 10^25, give or take a few billion particles.</span>

5 0

3 years ago

Calculate the following quantity: volume of 1.403 M copper(II) nitrate that must be diluted with water to prepare 575.2 mL of a

Juliette [100K]

Answer:

328 ml

Explanation:

We have given final volume =575.2 ml=0.575 L

Final concentration = 0.8012 M

We know that moles of copper(II) nitrate = final volume ×final concentration =0.8012×.0575=0.4606 moles

We have to find initial volume

So initial volume $=\frac{moles\ of \ copper(II)\ nitrate}{initial\ concentration}=\frac{0.4606}{1.403}=0.328L=328ml$

6 0

4 years ago

Which substances are always produced in an acid-base neutralization reaction? Check all that apply.

saw5 [17]

The neutralization reaction goes according to the scheme
H⁺ + OH⁻ = H₂O

acid and base react, salt and water are formed
NaOH + HNO₃ = NaNO₃ + H₂O
2KOH + H₂SO₄ = K₂SO₄ + 2H₂O

8 0

4 years ago

Rank these elements according to first ionization kr, br, se, as, ge, ga, ca, k

riadik2000 [5.3K]

6 0

3 years ago

Read 2 more answers

In the second footnote it was pointed out that mass and energy are alternate aspects of a single entity called mass-energy. The

Artemon [7]

Answer:

The corresponding mass change in this process is $1.9055\times 10^{-8} g$

Explanation:

$E= mc^2$ ,

where :

E is energy released with respect to mass

m is change mass

c is the speed of light.

2.096 g of hydrogen molecules combined with 96.000 g of oxygen molecules to form water and released energy E.

$E=1.715\times 10^3 kJ=1.715\times 10^6 J$

Mass change in this process = m

$1.715\times 10^6 J=m\times (3\times 10^8 m/s)^2$

$m=1.9055\times 10^{-11} kg=1.9055\times 10^{-8} g$

The change in mass calculated from Einstein equation is small that its effect on formation of product will be negligible.Hence, law of conservation of mass holds correct for chemical reactions.

4 0

3 years ago