What is the significance of a gene?

Given the balanced equation representing a reaction:

Vladimir79 [104]

Answer:

Option A. Addition

Explanation:

Unsaturated compounds under goes addition reaction to produce saturated compounds..

In the equation given above i.e

H2C=CH2 + F–F —> FCH2CH2F

we can see that the double in H2C=CH2 disappear by the reaction of F–F to produce FCH2CH2F which has no double. This simply indicates that the F–F was added to H2C=CH2. Hence, the reaction is called addition reaction.

4 0

3 years ago

What is the pH of a solution with [H ] = 1.25´10–10?

nevsk [136]

The relationship between H+ ion concentration and pH is pH=-lg[H+]. So the pH of the solution is -lg(1.25*10^-10) = 9.9.

8 0

3 years ago

Read 2 more answers

This is the question i need help on

mash [69]

I thank that your answer is C.

8 0

4 years ago

Before the introduction of chlorofluorocarbons, sulfur dioxide (entha;py of vapourization, 6.00 kcal/mol) was used in household

blondinia [14]

Answer: 367 grams

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to the molecular mass and contains avogadro's number $6.023\times 10^{23}$ of particles.

Enthalpy of vaporization is the amount of heat released when 1 mole of substance is converted from liquid to gaseous state.

Given : Enthalpy of vapourization of $CCl_2F_2$ = 17.4 kJ/mol

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

$\text{Number of moles of}CCl_2F_2=\frac{1000g}{121g/mol}=8.3moles$

1 mole of $CCl_2F_2$ produces heat = 17.4 kJ

8.3 moles of $CCl_2F_2$ produces heat = $\frac{17.4}{1}\times 8.3=144 kJ$

Given : Enthalpy of vapourization of $SO_2$ = 6.0 kcal/mol = $6\times 4.184=25.104kJ$ (1kcal=4.184kJ)

25.104 kJ heat is produced by = 1 mole of $SO_2$

144 kJ heat is produced by = $\frac{1}{25.104}\times 144=5.73mole$ of $SO_2$

Mass of $SO_2=moles\times {\text {molar mass}}=5.73\times 64=367g$

Thus 367 grams of $SO_2$ must be evoparated o remove as much heat as evaporation of 1.00 kg of $CCl_2F_2$

5 0

4 years ago

Ch3cooh (acetic acid) can form hydrogen bonds between its molecules. based on the lewis structure shown below, how many hydrogen

never [62]

Answer:
Number of Hydrogen Bond Acceptor atoms = 2

Number of Hydrogen Bond Donor atoms = 1

Explanation:
Hydrogen bond interactions are formed between those molecules which contains partial positive hydrogen atoms bonded covalently to most electronegative atoms like Oxygen, Nitrogen and Fluorine.
When hydrogen is attached to Oxygen, Nitrogen or Fluorine its electron density decreases and gets partial positive charge, this partial positive charged hydrogen atom then makes hydrogen bonding with the most electronegative element (partial negative) of neighbor molecule.
In Acetic acid there are two oxygen atoms hence there are two most electronegative elements therefore, two Hydrogen Bond Acceptor atom and each oxygen atom can accept two hydrogen bonds.
Also, it contains only one Hydrogen atom attached to oxygen atom so it has one Hydrogen Bond Donor atom.

4 0

3 years ago