would you select water or gasoline to try dissolving the following : table sugar, motor oil, rubber from tire marks, adhesive residue from a packing tape

Answers

Answer 1

Answer: To know the answer, we determine the polarities of the solvent we have. Water is polar and gasoline is nonpolar. We remember that like dissolves like. Therefore, the answers are:

table sugar = water
motor oil = gasoline
rubber from tire marks = gasoline
adhesive residue from a packing tape = gasoline

Answer 2

Answer:

Answer:

table sugar: water

motor oil: gasoline

rubber from tire marks: gasoline

adhesive residue from a packing tape: gasoline

Explanation:

Like dissolves like so a polar compound will dissolve in a polar solvent and a non polar compound will dissolve in a non-polar solvent. The intermolecular forces of attraction are responsible for the dissolution of substances in different solvents.

For example, polar solute exhibit hydrogen bonding and dipole interaction with polar solvents (water). Non-polar solute exhibit London dispersion forces with non-polar solvents(gasoline).

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What is one way to speed up a chemical reaction without otherwise affecting the reaction? A. add a catalyst B. decrease surface area C. change the products D. change the reactants

Answers

A. add a catalyst is the correct answer.

A catalyst never takes part in the reaction, so it does not affect the reaction.

Hope this helps~

A. add a catalyst is the correct answer.

Beth has a one-day-old baby daughter. When Beth puts her finger in the baby’s hand, the baby grasps her finger. Which statement best describes why the baby grasps Beth’s finger?A.) The baby’s reflex to grab is an innate behavior.
B.) The baby’s visual memory recognizes Beth’s finger.
C.) The baby is a day old and has learned to reach for Beth.
D.) The baby’s homeostatic response is to touch objects that are warm

Answers

The statement which statement best describes why the baby grasps Beth’s finger is that it is a reflex to grab is an innate behavior.

What is reflex?

In biology, a reflex, or reflex action, is an involuntary, unplanned sequence or action and nearly instantaneous response to a stimulus.

The simplest reflex is initiated by a stimulus, which activates an afferent nerve. The signal is then passed to a response neuron, which generates a response.

Reflexes are found with varying levels of complexity in organisms with a nervous system. A reflex occurs via neural pathways in the nervous system called reflex arcs. A stimulus initiates a neural signal, which is carried to a synapse. The signal is then transferred across the synapse to a motor neuron, which evokes a target response. These neural signals do not always travel to the brain,so many reflexes are an automatic response to a stimulus that does not receive or need conscious thought.

Learn more about reflex,here:

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Answer:

The baby`s reflex to grab is an innate behavior.

It`s not B because if the baby is 1 day old it`s not going to 'remember'.

It`s not C because it hasn`t really 'learned' anything.

It`s not D because babies can`t sense heat like a snake or something. -_-

Hope that helps

I also love the pfp

Why is Dalton credited with proposing the first atomic theory if Democritus was talking about atoms almost 2,200 years earlier?ps. i already know what he did but i just need to know why he is credited for being the first

Answers

I just had this question and I got it wrong but here's what is says to put:
-Democritus' ideas were not supported by evidence.
-Dalton's theory was the first scientific theory because it relied on scientific investigative processes.
-Dalton's theory was supported by evidence and repeated investigation

He was the the first to have a theory and and an explaination to prove it .

Similarities and differences between the male and female reproductive systems

Answers

Another significant difference is that the female reproductive system produces only one egg per month during a woman's reproducive years. This translates to only several hundred eggs produced during her lifetime. The male reproductive has literally millions of sperm cells available daily, as opposed to a single egg per month.

Final answer:

The male and female reproductive systems have similarities and differences. Both systems have specialized organs involved in reproduction, but they produce different gametes and have different external genitalia. The female system can support the development of a fertilized egg.

Explanation:

SIMILARITIES

The male and female reproductive systems have a common goal of producing offspring. Both systems include specialized organs and structures involved in the process. For example, both have gonads (testes in males and ovaries in females) that produce gametes (sperm in males and eggs in females).

DIFFERENCES

One major difference is the production of different gametes: sperm in males and eggs in females. Another difference is the presence of different external genitalia: male genitalia and scrotum in males and vulva in females. The female reproductive system also has the ability to support the development of a fertilized egg, while the male system does not have this capability.

Learn more about Similarities and differences between male and female reproductive systems here:

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At 700 K the equilibrium constant KC for the reaction between NO(g) and O2(g) forming NO2(g) is 8.7 × 106. The rate constant for the reverse reaction at this temperature is 0.54 M–1s–1. What is the value of the rate constant for the forward reaction at 700 K?

Answers

Answer : The value of the rate constant for the forward reaction at 700 K is, $4.70* 10^6$

Explanation :

The given chemical equilibrium reaction is:

$NO(g)+O_2(g)\rightleftharpoons NO_2(g)$

The expression for equilibrium constant is:

$K_c=([NO_2])/([NO][O_2])$

The expression for rate of forward and backward reaction is:

$R_f=K_f[NO][O_2]$

and,

$R_b=K_b[NO_2]$

As we know that at equilibrium rate of forward reaction is equal to rate of backward reaction.

$R_f=R_b$

$K_f[NO][O_2]=K_b[NO_2]$

$(K_f)/(K_b)=([NO_2])/([NO][O_2])$

$(K_f)/(K_b)=K_c$

Given:

$K_c=8.7* 10^6$

$K_b=0.54M^(-1)s^(-1)$

Now put all the given values in the above expression we get:

$(K_f)/(K_b)=K_c$

$(K_f)/(0.54)=8.7* 10^6$

$K_f=4.70* 10^6$

Therefore, the value of the rate constant for the forward reaction at 700 K is, $4.70* 10^6$

A marshmallow is placed in a microwave to be heated for smores. The marshmallow has a 86 mL at a temperature of 543 °C. What temperature, in K, would themarshmallow need to be if the volume changed to 51.1 ml?