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3 years ago

7

Is this statement true or false?

2 answers:

Novosadov [1.4K]3 years ago

8 0

it really easy its true

r-ruslan [8.4K]3 years ago

5 0

True. Living things are classified by the characteristics they have in common.

<span>All </span><span>living</span><span> organisms are </span><span>classified</span><span> within the organization based on extremely fundamental, shared characteristics.The classification of organisms is called taxonomy. </span>

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Which of the following is not purely potential energy?

Dimas [21]

Where are options? without that, i can’t help you sorry

3 0

3 years ago

Read 2 more answers

Consider the reaction.

Alex_Xolod [135]

Note the signs of equilibrium:-

Reaction don't procede forward or backward
Concentration of products and reactants remains same .

So

if

Concentration of A is 2M then concentration of B should be same .

So equilibrium constant K is 1

$\\ \rm\rightarrowtail K=\dfrac{[Products]^a}{[Reactants]^b}$

So

[B]=[A]^2
[B]=2^2
[B]=4M

8 0

2 years ago

Determine whether each of the following is a strong acid, a weak acid, or a species with negligible acidity.Drag the appropriate

sp2606 [1]

Answer:

CH₃NH₃⁺ is a weak acid.

HPO₄²⁻ has a negligible acidity.

CH₄ has a negligible acidity.

HNO₂ is a weak acid.

Explanation:

There are 7 strong acids: HCl, HBr, HI, HNO₃, H₂SO₄, HClO₃, HClO₄. The rest of the acids are weak.

CH₃NH₃⁺ is a weak acid, according to the following equation:

CH₃NH₃⁺ ⇄ CH₃NH₂ + H⁺

HPO₄²⁻ can act as an acid or as a base:

<u>Acid reaction:</u> HPO₄²⁻ ⇄ PO₄³⁻ + H⁺

<u>Basic reaction:</u> HPO₄² + H₂O ⇄ H₂PO₄⁻ + OH⁻

Given Kb > Ka, HPO₄²⁻ has a negligible acidity.

CH₄ cannot release nor accept H⁺ so it has a negligible acidity.

HNO₂ is a weak acid, according to the following reaction:

HNO₂ ⇄ H⁺ + NO₂⁻

7 0

3 years ago

The voltage of a battery can be changed by altering the _____

DedPeter [7]

I believe you can simply add more cells in series to get a higher voltage. Not 100% sure on that.

5 0

3 years ago

Draw the line-angle formula for the most stable carbocation with a molecular formula of: You do not have to consider stereochemi

Yuki888 [10]

Answer:

Following are the answer to this question:

Explanation:

The most stable carbocation is: $C_9H^{+}_{11}$

The means of $C_9H^{+}_{11}$ is a hydrocarbon with $C_9H_{12}$ , which is needed to find the double bonds.

The formula for calculating the unsaturation hydrocarbons are:

Degree of the unsaturation

$= \frac{2C+2+N-X-H}{2}$

Where,

C=9, N=0, X=0, H=12

$\ Degree \ of \ the \ unsaturation= \frac{2\times 9+2+0-0-12}{2}$

$= \frac{20-12}{2}\\= \frac{8}{2}\\=4$

which means 3 double bonds and 1 ring.

The most stable carbocation is given in the attachment file. please find the attachment.

4 0

3 years ago