a) if each substance above is heated at the same rate and same mass, which of the above has a smaller specific heat? how do you know?
b) at 2 minutes which one of the above has had the most energy added?

Answer:

genetic engineering !! :)

Explanation:

also, i love the pfp <3

Answer:

Rabbit

Explanation:

I said rabbit because the snake feeds off the rabbit and that's where he gets his energy from. If the question asked you what is the primary source of energy in this food chain then the answer would be the sun. Since the question only asks you about the snake then the rabbit is the answer.

Hope this helps!

Answer:

Potassium

Explanation:

In group one of the periodic table both the melting and the boiling points usually decrease down the group.

Now, down the group, it's lithium that comes first, then sodium, then potassium.

Thus, among the 3, potassium is furthermost down the group by virtue of the factor it has the highest atomic number.

Therefore, we can say that potassium has the lowest boiling point among the 3.

Answer:

The partial pressure of each gas is:

Explanation:

The pressure exerted by a particular gas in a mixture is known as its partial pressure. So, Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone:

PT = PA + PB

This relationship is due to the assumption that there are no attractive forces between the gases.

Dalton's partial pressure law can also be expressed in terms of the mole fraction of the gas in the mixture. The mole fraction is a dimensionless quantity that expresses the ratio of the number of moles of a component to the number of moles of all the components present.

The mole fraction of a gas in a gas mixture is given by:

XA = nA / nT

This fraction will always be less than 1.

So in a mixture of two or more gases, the partial pressure of gas A can be expressed as:

PA = XA * PT

In this case, you know:

So, the number of total moles nT is calculated as:

nT= number of moles of oxygen + number of moles of nitrogen +number of moles of water vapor

Then:

nT= 2.5 moles + 7.0 moles + 0.5 moles

nT= 10

So, the mole fraction of the gas in the mixture is:

Being the total presurre (PT) equal to 852 torr, then:

The partial pressure of each gas is:

Answer:

A plasma membrane is permeable to specific molecules that a cell needs. Transport proteins in the cell membrane allow for selective passage of specific molecules from the external environment. Each transport protein is specific to a certian molecule (indicated by matching colors).

3 – Simple Diffusion Across the Cell (Plasma) Membrane: The structure of the lipid bilayer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down their concentration gradient, by simple diffusion.

Or Cell Membrane

Explanation:

Hope This HElp??

Please MArk Me Brainly!!

Answer:

The correct answer is 2.33g of [tex]H_{2}O[/tex], A

Explanation:

We can use basic stoich to get this question.

To start, lets convert our grams to moles in order to use our equation. 5.38g of [tex]O_{2} = (\frac{5.38}{2*15.999}) moles = 0.168136[/tex] moles.

We then can use our molar ratio of 13:10. Simply divide by our molar ratio in order to go from moles of [tex]O_{2}[/tex] to moles of [tex]H_{2}O[/tex]. This gets us 0.129335 moles of [tex]H_{2}O[/tex].

Now lets convert to grams of [tex]H_{2}O[/tex] by multiplying by the molar mass of [tex]H_{2}O[/tex]. [tex].129335*(1.008*2+15.999) = 2.32997g[/tex] of [tex]H_{2}O[/tex]

1.7960L

Explanation:

the mass of the gas is constant in both instances

pv/T=constant(according to pv=nRT)

745mmHg*2L/298K=760mmHg*v/273K

v=1.7960L

1.00mol is the correct answer

Answer:

3 i am pretty sure make me brainy i gust

Explanation:

Answer:

B. Nuclear energy

Explanation:

Answer:

D) The enthalpy of reaction does not depend on the steps taken in the reaction.

Explanation:

In my study guide, it says, "Hess's law states that the enthalpy of a reaction does not depend on the path."

hope this helps~

Answer:

It is a chemical change

Explanation:

Melting of wax is temporary and wax can settle again on cooling and turns into a solid. ... Hence it is a chemical change.

Answer:

physical

Explanation:

the wax is changing it's physical state by becoming a liquid, it isn't changing it's chemical makeup

Answer:

A

Explanation:

I don't know how to say how I got it.

Answer:

d

Explanation:

the orbits of the planets in our circular elliptical and circular

Answer:

6 moles of CO₂

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

C₃H₈ + 5O₂ —> 3CO₂ + 4H₂O

From the balanced equation above,

1 mole of C₃H₈ reacted to produce 3 moles CO₂.

Finally, we shall determine the number of mole of CO₂ produced by the reaction of 2 moles of C₃H₈. This can be obtained as follow:

From the balanced equation above,

1 mole of C₃H₈ reacted to produce 3 moles CO₂.

Therefore, 2 moles of C₃H₈ will react to produce = 2 × 3 = 6 moles of CO₂.

Thus, 6 moles of CO₂ were obtained from the reaction.

it goes from a high point to a low point back to a high point or vice versa.

Answer:

the percentage yield of Cu(NO3) 2 is 40%

Answer:

Nothing

Explanation:

I would say this because the parents are picking the baby's traits and they make all the decisions. And i guess the doctor would have to follow the traits, if i'm right  i tried

Explanation:

Answer:

Each copper atom has lost one electron and become a positive ion. ... The electrons can move freely through the metal. For this reason, they are known as free electrons. They are also known as conduction electrons, because they help copper to be a good conductor of heat and electricity.

Answer:

[C₆H₁₂O₆] = 0.139 M

Explanation:

Molarity si defined as a sort of concentration. It indicates the moles of solute that are contained in 1 L of solution.

We can also say, that molarity are the mmoles of solute contained in 1 mL of solution.

For this case, the solute is sugar (glucose). Let's determine M (mmol/mL)

(3.95 g . 1mol / 180g) . (1000 mmol / 1mol) / 158 mL

We determine moles, we convert them to mmoles, we divide by mL

M = 0.139 M

Moles = 3.95 g . 1mol / 180g → 0.0219 mol

We convert mL to L → 158 mL . 1L/1000mL = 0.158L

M = 0.0219 mol / 0.158L = 0.139 M

Answer:

B: Atomic size

Explanation:

I just guess for the points

Answer:

question 6: winter solstice

question 7: rotation is when an object spins around its axis, revolution is when an object travels in a path around another

question 8: the rotational period is equal to the period of revolution for the moon

question 10: true

Answer:

Question 6:  winter solstice

Question 7: rotation is when an object spins around its axis,

revolution is when an object travels in a path around another

Question 8: the rotational period is equal to the period of revolution for the moon

Question 10: true

Explanation:

I took the test its right

Answer:

Floating ice can insulate bodies of water. Answer: b. Discuss how a high specific heat helps to buffer temperature for organisms. Water's high specific heat is important to life because...

Explanation:

Answer:

1 HBr + 1 KOH -> 1 KBr + 1 H2O

Explanation: