All categories

3 years ago

Who founded the terrorist organization al-Qaeda?

1 answer:

3 0

Osama Bin Laden founded the terrorist organization Al- Qaeda. The correct option to the given question is option "C". <span>Osama Bin Laden was born on 10th March in the year 1957 in Riyadh of Saudi Arabia. He died or rather was killed on 2nd May 2011 in Abbottabad of Pakistan. Osama was born in a billionaire family and his father’s name was Mohammad Bin Awad bin Laden. He was a fierce terrorist and had connections with several terrorist organizations around the world. </span>

You might be interested in

Ethanol (C2H5OH) melts at –114 °C and boils at 78 °C. The enthalpy of fusion of ethanol is 5.02 kJ/mol, and its enthalpy of vapo

alexandr1967 [171]

Answer:

First question

$Q = 36826 \ J$

Second question

$Q = 52299.7 \ J$

Explanation:

From the question we are told that

The melting point of Ethanol is $T_m = -114 ^oC$

The boiling point of Ethanol is $T_b = 78^ oC$

The enthalpy of fusion of Ethanol is $F = 5.02 \ kJ / mol = 5.02 *10^{3}\ kJ / mol$

The enthalpy of vaporization of Ethanol is $L = 38.56 \ kJ / mol = 38.56 *10^{3} \ J / mol$

The specific heat of solid Ethanol is $c_e = 0.97 \ J/ g \cdot K$

The specific heat of liquid Ethanol is $c_l = 2.3 \ J / g \cdot K$

The mass of the Ethanol given is $m = 35.0 \ g$

Considering the first question

The initial temperature is $T_i = 27^oC$

The final temperature is $T_f = 120^oC$

Generally the heat required too raise the Ethanol to its boiling point is mathematically represented as

$Q_1 = m * c_l * (T_b - T_i)$

=> $Q_1 = 35.0 * 2.3 * ( 78 - 27)$

=> $Q_1 =4106 \ J$

Genially the number of moles of Ethanol given is mathematically represented as

$n = \frac{m}{Z}$

Here Z is the molar mass of Ethanol with value $Z = 46 g/mol$

$n = \frac{35}{46 }$

=> $n = 0.7609 \ mol$

Generally the heat of vaporization of the Ethanol is mathematically represented as

$Q_2 = n * L$

=> $Q_2 =0.7809 * 38.56 * 10^{3}$

=> $Q_2 =29339 \ J$

Generally the heat required too raise the Ethanol from its boiling point to $T_f$ is mathematically represented as

$Q_3 = m * c_l * (T_f - T_b)$

=> $Q_3 = 35 * 2.3 * (120 - 78 )$

=> $Q_3 = 3381 \ J$

Generally the total heat required is

$Q = Q_1 + Q_2 + Q_3$

=> $Q = 4106 + 29339 + 3381$

=> $Q = 36826 \ J$

Considering the second question

The initial temperature is $T_i = -120^oC$

The final temperature is $T_f = 120^oC$

Generally the heat required too raise the Ethanol to its melting point is mathematically represented as

$Q_1 = m * c_e * (T_m - T_i)$

=> $Q_1 = 35.0 * 0.97 * ( -114 - (- 120) )$

=> $Q_1 = 203.7 \ J$

Generally the heat of fusion of the Ethanol is mathematically represented as

$Q_2 = n * F$

=> $Q_2 =0.7809 * 5.02 *10^{3}$

=> $Q_2 =3920 \ J$

Generally the heat required too raise the Ethanol to its boiling point is mathematically represented as

$Q_3 = m * c_l * (T_b - T_m)$

=> $Q_3 = 35.0 * 2.3 * ( 78 - (- 114) )$

=> $Q_3 =15456 \ J$

Generally the heat of vaporization of the Ethanol is mathematically represented as

$Q_4 = n * L$

=> $Q_4 =0.7809 * 38.56 * 10^{3}$

=> $Q_4 =29339 \ J$

Generally the heat required too raise the Ethanol from its boiling point to $T_f$ is mathematically represented as

$Q_5 = m * c_l * (T_f - T_b)$

=> $Q_5 = 35 * 2.3 * (120 - 78 )$

=> $Q_5 = 3381 \ J$

Generally the total heat required is

$Q = Q_1 + Q_2 + Q_3+Q_4 + Q_5$

=> $Q = 203.7 + 3920 + 15456 +29339+3381$

=> $Q = 52299.7 \ J$

5 0

3 years ago

Unit 7 CER

Schach [20]

Calcium has valency 2 and cl is diatomic molecule and 2 elctron is transferred to cl2 from calcium.ionic bond generally ocuurs in between metal and non metal.so due to transfer of electron, there exist ionic bond between cacl2

4 0

3 years ago

Write a nuclear equation to describe the neutron induced fission of Pu-239 to form Kr-89 and Ce-149 (this fission is induced by

zlopas [31]

Answer:

$\rm 2_{0}^{1}\text{n} + \, _{94}^{239}\text{Pu} \longrightarrow_{36}^{89}\text{Kr} + \, _{58}^{149}\text{Ce} + \, 3_{0}^{1}\text{n}; three$

Explanation:

If the fission is induced by two neutrons, the unbalanced equation is

$2\rm _{0}^{1}\text{n} + \, _{94}^{239}\text{Pu} \longrightarrow_{36}^{89}\text{Kr} + \, _{58}^{149}\text{Ce} + \, x_{0}^{1}\text{n}$

The main point to remember in balancing nuclear equations is that the sums of the superscripts and the subscripts must be the same on each side of the equation .

Balancing the superscripts, we get

2 + 239 = 89 + 149 + x

241 = 238 + x

x = 3

The balanced nuclear equation is

$\rm 2_{0}^{1}\text{n} + \, _{94}^{239}\text{Pu} \longrightarrow_{36}^{89}\text{Kr} + \, _{58}^{149}\text{Ce} + \, \mathbf{3}_{0}^{1}\text{n}$

$\text{The fission produces } \boxed{\textbf{three}} \text{ neutrons}$

4 0

3 years ago

Please help me do this question.

masya89 [10]

Answer:

In chemistry, there are three definitions in common use of the word base, known as Arrhenius bases, Brønsted bases and Lewis bases. All definitions agree that bases are substances which react with acids as ... A ...

Acids are species with pH less than 7, while bases those with pH greater than 7. ... Using Arrhenius' definition, acids are those that produce the hydrogen ion when dissolved in water ( ) while bases produce the hydroxide ion ( ). These ions, when in water, act as charge carriers and can hence conduct electricity.

Acid–base reactions require both an acid and a base. ... For example, according to the Arrhenius definition, the reaction of B If inorganic, determine whether the compound is acidic.

Explanation:

I HAVE GIVE DIFINITIO FROM THAT YOU WRITE TRUE OR FALSE

8 0

3 years ago

Name the functional group in the

vodomira [7]

Answer:

aldehyde

Explanation:

8 0

3 years ago