What is the net charge if there are 3 protons and 3 electrons

docker41 [41]

Answer:

Lead (Pb), a soft, silvery white or grayish metal in Group 14 (IVa) of the periodic table.

7 0

3 years ago

In the first order reaction A → products, the initial concentration of A is 0.1 108M, and 44 s later, 0.0554M. What is the initi

lilavasa [31]

Answer : The initial rate of the reaction is, $1.739\times 10^{-3}s^{-1}$

Explanation :

First we have to calculate the rate constant of the reaction.

Expression for rate law for first order kinetics is given by :

$k=\frac{2.303}{t}\log\frac{[A_o]}{[A]}$

where,

k = rate constant = ?

t = time taken for the process = 44 s

$[A_o]$ = initial amount or concentration of the reactant = 0.1108 M

$[A]$ = amount or concentration left time 44 s = 0.0554 M

Now put all the given values in above equation, we get:

$k=\frac{2.303}{44}\log\frac{0.1108}{0.0554}$

$k=0.0157$

Now we have to calculate the initial rate of the reaction.

Initial rate = K [A]

At t = 0, $[A]=[A_o]$

Initial rate = 0.0157 × 0.1108 = $1.739\times 10^{-3}s^{-1}$

Therefore, the initial rate of the reaction is, $1.739\times 10^{-3}s^{-1}$

8 0

3 years ago

Write the name of this structure

faltersainse [42]

Answer:

The name of the compound is:

4–bromo–5,5–dichloro–hex–3–ene–1–yne

Explanation:

To the above compound, we simply do the following:

1. Identify the functional group of the compound.

2. Locate the longest continuous carbon chain. This gives the parent name of the compound.

3. Identify the substituent group attached.

4. Give the substituents the lowest possible count alphabetically.

5. Combine the above to obtain the name of the compound.

Now, we shall determine the name of the compound as follow:

1. The compound has carbon to carbon triple bond (C≡C) yne and carbon to carbon double bond (C=C) ene.

2. The longest continuous carbon chain is 6 i.e hexane.

3. The substituents group attached are:

i. Bromine (bromo), Br

ii. Chlorine (Chloro), Cl

4. In counting, ene comes before yne. But in this case, ene assumes same position from either side, So we shall consider counting from the side that gives yne the lowest count. Thus, ene is at carbon 3 and yne is at carbon 1. Therefore,

i. Bromo, Br is at carbon 4.

ii. Chloro, Cl appears twice and both are at carbon 5.

5. The name of the compound is:

4–bromo–5,5–dichloro–hex–3–ene–1–yne.

7 0

3 years ago

Which line-angle formula represents an alkene?

Vladimir79 [104]

Answer:

Option 3.

Explanation:

Alkenes are generally unsaturated hydrocarbon with carbon to carbon double bond (C=C).

From the options given above, only option 2 and 3 contain carbon to carbon double bond (C=C).

Option 2 is called a benzene ring and not an alkene. Benzene are not classified as alkenes because the double bond between the carbon can not be broken i.e benzene does not undergo addition reaction like the alkenes. Benzene tends to show more stability than the alkenes.

This leaves us with option 3 as the answer to the question because it contains carbon to carbon double bond (C=C)

4 0

3 years ago

The work done depends upon the --------------applied and the -------------- produced

Deffense [45]

Answer:

The work done depends upon the <u> Force</u> applied and <u>Displacement</u> produced.

Explanation:

Definition: Work is said to be on a body only if a force acting on it causes a displacement in its direction .

In other words we can say it is the product of force and displacement

Formula:

$Work = Force\times Displacement\ cos \theta$

Unit:

The unit of work is Joule.

So, work depends on the force applied and the displacement caused by the applied force.

If force is applied and there is no displacement, then work is 0 .

Example: Pushing a wall does no work.

Work is positive if force applied and displacement is in same direction.

Work is negative if force applied and displacement is in opposite direction.

3 0

3 years ago