15. Frog lungs are poorly developed. How does this relate to their skin being thin and moist?

Answers

Answer 1

Answer: The answer is that they havent reached their full form yet.

Answer 2

Answer: Frog's lungs are inside their body (I believe), but their skin has nothing to do with their lungs so their skin can be thin and moist but their inside might be a whole other story ^_^

Related Questions

Is ammonium permanganate ionic or covalent.
A pelican is born with a larger bill than other pelicans of the same species. When this pelicanbreeds, some of its offspring also have larger bills. What is the most likely explanation for thelarger bills in the pelican and its offspring?Inheritance of an quoted traitA mutationNatural selectionA change in diet
Can aromatic compounds belong to other classes of compounds
What does the arrow mean in a chemical equation?
Suppose 1 gold bar is 6 cm long, 2 cm high, and 3 cm wide. How many whole gold bars will you be able to fit in a vault with a volume of 500 cm3?A. 13 barsB. 27 barsC. 41 bars

What are three factors that influence the rate of urine production

Answers

Answer:

blood sugar blood pressure and diet

Calculate the mass of barium sulphate formed when 500 cm3 of 1 mol dm sodium sulphate solution is reacted completely with barium chloride solution.[ Relative atomic mass : O = 16; S = 32; Ba = 1371

Answers

Answer:

116.69 g.

Explanation:

Let's write down the reaction taking place when barium chloride reacts with sodium sulfate. This is a double displacement reaction, meaning the anions will be exchanged to produce barium sulfate and sodium chloride:

$BaCl_2(aq)+Na_2SO_4(aq)\rightarrow BaSO_4(s)+2 NaCl(aq)$

Let's find the moles of sodium sulfate. Given the volume of:

$V_(Na_2SO_4)=500 cm^(3)$

Convert this to milliliters knowing that:

$1 mL = 1 cm^3$

Therefore:

$V_(Na_2SO_4)=500 cm^3\cdot (1 mL)/(1 cm^3) =500 mL\cdot(1 L)/(1000 mL) =0.500 L$

Also, we know that:

$1 dm^3 = 1 L$

Convert the molarity into mol/L:

$1 (mol)/(dm^3)\cdot (1 dm^3)/(1 L)=1 (mol)/(L)$

Multiply molarity by volume to find moles of sodium sulfate reacted:

$n_(Na_2SO_4)=1 (mol)/(L)\cdot0.500 L=0.500 mol$

According to stoichiometry of the equation, 1 mole of sodium sulfate produces 1 mole of sulfate, so 0.500 mol of sodium sulfate produce 0.500 mol of barium sulfate. That said, we have moles of barium sulfate produced. To find mass, let's multiply this amount of moles by the molar mass of barium sulfate:

$m_(BaSO_4)=0.500 mol\cdot233.38 (g)/(mol) =116.69 g$

Whats a material made of oxygen and silicon

Answers

Magma/Lava is mainly composed of silica, with some traces of oxygen. :D

Lava is mostley silicon with a little oxygen.

The melting point of table salt is 801 degrees celsius. is this a physical or chemical property?

Answers

It is a Physical property because like water it changes into a ice cube but it can be melted into water or be turned back into an ice cube.

These models show the electron structures of two different nonmetal elements.Which element is likely more reactive, and why?

A.) Element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table.

B.) Element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table.

C.) Element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons.

D.) Element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

Answers

Answer: Option (D) is the correct answer.

Explanation:

Valence shell is the shell present on the outermost core of an atom and electrons present in the valence shell are known as valence electrons.

If an atom has completely filled valence shell then it means the atom is not reactive in nature because it is already stable.

But when an atom has less than eight electrons in its valence shell then it means to attain stability the atom will readily attract electrons towards itself.

As the given element 1 has 8 electrons in its valence shell. Hence, it is not reactive in nature but element 2 has 6 valence electrons. So, in order to attain stability element 2 will readily attract 2 electrons from a donor atom.

Thus, we can conclude that element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

Answer:

Its D

Explanation:

I got it right on the test

The electric current leaves the battery and passes through the ______

Answers

Through the negative born?

Negetive born

HOPE IT HELPED

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