All categories

3 years ago

B) How many hydrogen atoms are in an acyclic alkane with 16 carbon atoms?

1 answer:

8 0

The general formula of acyclic, i.e. non-cyclic, alkane is $C_{n} H_{2n+2}$
where, n = number of carbon atom.

In present case, n = 16.
∴, Number of H atom = (2X16)+2 = 34

You might be interested in

How many atoms are in 1.00 mol of calcium

SVEN [57.7K]

Answer: 6.02214076 atoms Ca

Explanation:

Ca is monoatomic, so atoms in 1 mol = avogadro number

6 0

3 years ago

A solution of acetic acid has a pH of 3.45. What is the concentration of acetic acid in this solution? Ka for CH3COOH is 1.8×10-

Serjik [45]

Answer:

0.007 M

Explanation:

pH is defined as the negative logarithm of the concentration of hydrogen ions.

Thus,

pH = - log [H⁺]

The expression of the pH of the calculation of weak acid is:-

$pH=-log(\sqrt{k_a\times C})$

Where, C is the concentration = ?

Given, pH = 3.45

So, for $CH_3COOH$ , $K_a=1.8\times 10^{-5}$

$3.45=-log(\sqrt{1.8\times 10^{-5}\times C})$

$\log _{10}\left(\sqrt{1.8\cdot \:10^{-5}C}\right)=-3.45$

C = 0.007 M

5 0

3 years ago

The density of tin is 7.31 g/cm? What is the mass of the sample pictured below?

Oduvanchick [21]

Answer:

8.1 g/cm3.

Explanation:

5 0

3 years ago

C. How many moles of gas are in a container with a volume of 9.55 mL at 35 °C and a pressure of 895 mmHg?

olya-2409 [2.1K]

Answer: There are $4.45\times 10^{-4}moles$ of gas are in a container with a volume of 9.55 mL at 35 °C and a pressure of 895 mmHg

Explanation:

According to ideal gas equation:

$PV=nRT$

P = pressure of gas = 895 mm Hg= 1.18 atm (760 mm Hg= 1 atm)

V = Volume of gas = 9.55 ml = 0.00955 L (1 L=1000ml)

n = number of moles = ?

R = gas constant = $0.0821Latm/Kmol$

T =temperature = $35^0C=(35+273)K=308K$

$n=\frac{PV}{RT}$

$n=\frac{1.18atm\times 0.00955L}{0.0821L atm/K mol\times 308K}=4.46\times 10^{-4}moles$

Thus there are $4.45\times 10^{-4}moles$ of gas are in a container with a volume of 9.55 mL at 35 °C and a pressure of 895 mmHg

5 0

3 years ago

Water containing large amounts of Mg2+and Ca2+ions is said to be hard because it is hard to make soap lather in the water. True

mafiozo [28]

Answer:True

Explanation:

Water is said to be hard when it contains calcium ions or magnesium ions dissolved in it. These ions are able to react with soap in such a way that the soap is prevented from forming lather with the water. Hard water occurs when water passes over calcium or magnesium bearing minerals and dissolves some of it. Hardness due to the presence of calcium ions can easily be removed by boiling the water.

8 0

3 years ago