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Step2247 [10]
3 years ago
15

Nitrogen monoxide (NO) is a bioactive molecule in blood. Low NO concentrations cause respiratory distress and the formation of b

lood clots. Doctors prescribe nitroglycerin, C3H5N 309. and isoamyl nitrate. (CH3)2CHCH2CH20N02, to increase NO. If each compound releases one molecule of NO per atom of N. calculate the mass percent of NO in each medicine.
Chemistry
1 answer:
vlabodo [156]3 years ago
5 0

Answer:

Mass percentage of NO in nitroglycerin is 39.63%.

Mass percent of NO in  isoamyl nitrate is 22.55\%.

Explanation:

Molar mas of nitroglycerin ,C_3H_5N_3O_9=227.08 g/mol

Molar mas of isoamyl nitrate,C_5H_{11}NO_3=117.15 g/mol

Given: If each compound releases one molecule of NO per atom of N.

1)In nitroglycerin, there are 3 nitrogen atoms. then number of NO will be :

3 × 1= 3 NO molecules

Mass percent of NO in C_3H_5N_3O_9

\% NO=\frac{3\times (14 g/mol+16 g/mol)}{227.08 g/mol}=39.63\%

2)In  isoamyl nitrate. , there are 1 nitrogen atom. then number of NO will be :

1 × 1= 3 NO molecules

Mass percent of NO in C_3H_5N_3O_9

\% NO=\frac{1\times (14 g/mol+16 g/mol)}{133 g/mol}=22.55\%

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timofeeve [1]

Answer:

\boxed {\boxed {\sf 0.80 \ mol\ F}}

Explanation:

We are asked to find how many moles are in 4.8 × 10²³ fluorine atoms. We convert atoms to moles using Avogadro's Number or 6.022 × 10²³. This is the number of particles (atoms, molecules, formula units, etc.) in 1 mole of a substance. In this case, the particles are atoms of fluorine.

We will convert using dimensional analysis and set up a ratio using Avogadro's Number.

\frac {6.022 \times 10^{23} \ atoms \ F}{ 1 \ mol \ F}

We are converting 4.8 × 10²³ fluorine atoms to moles, so we multiply the ratio by this number.

4.8 \times 10^{23} \ atoms \ F *\frac {6.022 \times 10^{23} \ atoms \ F}{ 1 \ mol \ F}

Flip the ratio so the units of atoms of fluorine cancel each other out.

4.8 \times 10^{23} \ atoms \ F *\frac { 1 \ mol \ F}{6.022 \times 10^{23} \ atoms \ F}

4.8 \times 10^{23}  *\frac { 1 \ mol \ F}{6.022 \times 10^{23} }

Condense into 1 fraction.

\frac { 4.8 \times 10^{23} }{6.022 \times 10^{23} } \ mol \ F

Divide.

0.7970773829 \ mol \ F

The original measurement of atoms has 2 significant figures, so our answer must have the same. For the number we found, that is the hundredths place. The 7 in the thousandths tells us to round the 9 in the hundredths place up to a 0. Then, we also have to round the 7 in the tenths place up to an 8.

0.80 \ mol \ F

4.8 × 10²³ fluorine atoms are equal to <u>0.80 moles of fluorine.</u>

6 0
3 years ago
An ideal gas is in a sealed rigid container. The average kinetic energy of the gas molecules depends most on An ideal gas is in
sergejj [24]

Answer:

The temperature of the gas.

Explanation:

According to the kinetic molecular theory, the molecules of a substance are in constant random motion.

If an ideal gas is contained is a sealed rigid container, the average velocity of the gas molecules is dependent of the temperature of the gas.

Recall that temperature is defined as the average kinetic energy of the molecules of a body.

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Explanation :

Weight by volume (w/v) means that the mass of solute present in 100 mL volume of solution.

Weight by weight (w/w) means that the mass of solute present in 100 gram of solution.

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As per question, amoxicillin suspension is, 125 mg/ 5 ml that means 125 mg of Amoxicillin present in 5 mL of suspension. So, it is an example of weight to volume.

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Hypothesis have to be based on previous knowledge and have to be able to be tested but the problem is most hypothesis can’t be explained so it’s impossible to prove a hypothesis correct because science uses inductive reasoning

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ololo11 [35]
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We’re left with Chlorine, which is a non-metal in group 7, a highly reactive group, on the periodic table.
6 0
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