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kaheart [24]
2 years ago
14

How many grams of nitrogen are contained in a sample of C4H9N302 that also

Chemistry
1 answer:
klemol [59]2 years ago
7 0

Empirical formula = mol ratio

mol H = 9.42 x 10²⁴ : 6.02 x 10²³ = 15.648

mol N = 3/9 x 15.648 = 5.216

mass N = 5.216 x 14 g/mol =73.024 g

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Determine the amount of sodium hypochlorite in Bleach you tolerated a 23.82 ml sample of 0.0100 M KIO cuboid with a solution of
Kisachek [45]

Answer: The moles of KIO cuboid titrated are 0.0002382

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

Molarity=\frac{n\times 1000}{V_s}

where,

n = moles of solute

V_s = volume of solution in ml

Now put all the given values in the formula of molarity, we get

0.0100=\frac{n\times 1000}{23.82}

n=0.0002382

Therefore, the moles of KIO cuboid are 0.0002382

5 0
3 years ago
Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas
Butoxors [25]
<span>Answer: 1.06 moles of molecules = 6.38x10²³ molecules
</span><span />

<span>Explanation:
</span><span />

<span>1) Balanced chemical equation:
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<span>2Na + 2H₂O -> 2NaOH + H₂
</span><span />

<span>2) Mole ratios:
</span><span />

<span>2 mol Na : 2 mol H₂O : 2 mol NaOH : 1 mol H₂
</span><span />

<span>3) Convert 48.7 g of sodium to moles:
</span><span />

<span>number of moles = mass in grams / molar mass
</span><span />

<span>molar mass of Na = atomic mass = 23.0 g/mol


</span><span>number of moles = 48.7g / 23.0 g/mol = 2.12 moles of Na</span>
<span /><span>
4) Proportion:
</span><span />

<span>2moles Na/1mol H₂ = 2.12 moles Na / x
</span><span />

<span>x = 2.12 moles Na * 1 mol H₂ / 2 moles Na = 1.06 moles H₂.
</span><span />

<span>5) If you want to convert that to number of molecules you have to multiply by Avogadro's number: 6.022 x 10^²³
</span><span />

<span>1.06 mol x 6.022x10^²³ molecules/mol = 6.38x10²³ molecules</span>
8 0
3 years ago
"My breasts are really sensitive, and depending on when my partner touches them, this can make or break a pleasure session. What
dem82 [27]

Answer:

Where do I even start?

Explanation:

4 0
3 years ago
Choose one of the monosaccharide that gave a positive Benedict's test. Write the chemical reaction equation for that positive Be
ruslelena [56]
Find the answer your self dude
4 0
3 years ago
Yellow cake is a uranium ore that contains about 75% U3O8 (842 g/mol), and can be further refined to extract pure uranium. How m
alex41 [277]

Answer : The correct option is, (5) 5.5 kg

Explanation :

As we are given that yellow cake is a uranium ore that contains about 75 % U_3O_8. That means,

Mass of U_3O_8 = 75 g

Mass of yellow cake = 100 g

Molar mass of uranium = 238 g/mol

Molar mass of U_3O_8 = 842 g/mol

First we have to calculate the mass of pure uranium.

As, 842 g of U_3O_8 contains 3\times 238g of pure uranium

So, 75 g of U_3O_8 contains \frac{75}{842}\times 3\times 238g=63.59g of pure uranium

Now we have to calculate the mass of yellow cake.

As, 63.59 g of pure uranium present in 100 g of yellow cake

So, 3.5 kg of pure uranium present in \frac{100g}{63.59g}\times 3.5kg=5.5kg of yellow cake

Thus, the mass of yellow cake processed to produce 3.5 kg of pure uranium must be, 5.5 kg

6 0
4 years ago
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