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Fudgin [204]
4 years ago
8

What is the symbol for molarity? m M g l

Chemistry
1 answer:
frozen [14]4 years ago
3 0

Answer:

The answer to your question is M

Explanation:

Concentration is represented in a lot of units like Molarity, molality, normality, mass percent, etc.

These units consider the moles or grams of the solute and the volume of the solvent.

Molarity measures the number of moles of solute per liter of solvent and is represented with a letter M (uppercase).

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Carbon-14 is a radioactive isotope that decays according to first-order kinetics in a process that has a half-life of 5730 years
Sliva [168]

Answer : The time passed in years is 2.83\times 10^3\text{ years}

Explanation :

Half-life = 5730 years

First we have to calculate the rate constant, we use the formula :

k=\frac{0.693}{t_{1/2}}

k=\frac{0.693}{5730\text{ years}}

k=1.21\times 10^{-4}\text{ years}^{-1}

Now we have to calculate the time passed.

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = 1.21\times 10^{-4}\text{ years}^{-1}

t = time passed by the sample  = ?

a = let initial amount of the reactant  = X g

a - x = amount left after decay process = 71\% \times (x)=\frac{71}{100}\times (X)=0.71Xg

Now put all the given values in above equation, we get

t=\frac{2.303}{1.21\times 10^{-4}}\log\frac{X}{0.71X}

t=2831.00\text{ years}=2.83\times 10^3\text{ years}

Therefore, the time passed in years is 2.83\times 10^3\text{ years}

8 0
3 years ago
What mass of hydrogen sulfide, H2S1, will completely react with 2.00 moles of silver nitrate, AgNO3?
vampirchik [111]

Answer:

34g

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

H2S + 2AgNO3 —> 2HNO3 + Ag2S

Next, we shall determine the number of mole of H2S required to react with 2 moles of AgNO3.

This is illustrated below:

From the balanced equation above,

We can see that 1 mole of H2S is required to react completely with 2 moles of AgNO3.

Finally, we shall convert 1 mole of H2S to grams. This is shown below:

Number of mole H2S = 1 mole

Molar mass of H2S = (2x1) + 32 = 34g/mol

Mass = number of mole x molar Mass

Mass of H2S = 1 x 34

Mass of H2S = 34g

Therefore, 34g of H2S is needed to react with 2 moles of AgNO3.

6 0
3 years ago
Explain what causes Earth’s seasons, even though earth is always tilted the same way during its revolution
Volgvan
I think the answer is the rotation. I'm not so sure, but u can try. 
3 0
4 years ago
The density of gold is 19.32 g/cm3. what is the volume of a sample of gold that has a mass of 54.82 g?
Lelu [443]
Hey there: !

density = 19.32 g/cm³

mass = 54.82 g

Volume = ?

therefore:

D = m / V

19.32 = 54.82 / V

V = 54.82 / 19.32

V = 2.837 cm³
3 0
3 years ago
When you see yourself in a mirror, you are seeing refracted light waves? True or false?
Taya2010 [7]

Answer:

The reflection of light rays is one of the major aspects of geometric optics; the other is refraction, or the bending of light rays.

so its true.

6 0
3 years ago
Read 2 more answers
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