Ducks and geese have small, fluffy feathers called "down."
How does down help these birds survive?

Answer:

gaseous CO2 bubbles out of the solution

Explanation:

We already know that the dissolution of a gas in water is exothermic. Hence, when the temperature of a solution containing a gas is increased, the solubility of the gas decreases and the gas bubbles out of the solution.

Similarly, the dissolution of KNO3 in water is endothermic. This implies that the solubility of the solid increases with increasing temperature.

Thus the solid becomes more soluble at 75°.

When the solution is warmed to 75°C ; ( B ) gaseous CO₂ bubbles out of the solution

When a solution is saturated with CO₂ ( gas ) and KNO₃ ( s ) has its temperature increased above the room temperature to about 75°C the solubility of the gas CO₂ will decrease, because the solubility of gas in a solution decreases with an increase in temperature while the solubility of a solid increases with increase in temperature.

Since the solubility of the gas decreases the gas will escape as bubbles ( CO₂ bubbles ).

Hence we can conclude that When the solution is warmed to 75°C ; ( B ) gaseous CO₂ bubbles out of the solution.

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Answer:

alam ko sagot pero mataas lang

Answer:

WEATHER!

Explanation:

Weather can cause an unexpected temperature change! :) Hope this helps!

Answer:

26.32 because z easy

Explanation:

Answer:

26.32 because z easy

Explanation:fds

Answer:

26.32 becfdseefdause z easy

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Explanasetion:sf

26.32 because z easy ef

Explanation:

Answer:ds

26.32 because z easy

Explanation:

hbdshfiushyAnswer:

26.32 because z easy

Explanation:

Answer:

26.32 because z easy

Explanation:fds

Answer:

26.32 becfdseefdause z easy

Explansefdsefdsefdsenfuystyegfsvfgvsfhs76ieu4fguyhgvrykes4rjehrfgehg4fuebecause z easy

Explanasetion:sf

26.32 because z easy ef

Explanation:

Answer:ds

26.32 because z easy

Explanation:

hbdshfiushy

Answer:

Its C - He

Explanation:

Explanation:

Dinitrogen trioxide is a nitrogen oxide. Nitrogen trioxide appears as a blue liquid with a sharp, unpleasant chemical odor.

Description: Dinitrogen trioxide is a nitrogen oxide.ChEBINitrogen trioxide appears as ...

Synonyms: Dinitrogen trioxideNITROGEN TRIOXIDENitrogen oxide (N2O3)10544-7...

Molecular Formula: N2O3

Molecular Weight: 76.012 g/mol

Answer:

A. absorbs light

Explanation:

For an electron to move from a lower energy level to a higher energy level, energy needs to be added to the atom.

In most cases this required energy will be light: The electron of the atom will absorb the energy of the light and move to a higher energy level.

When said electron comes back to the lower energy level, the atom will conversely give off light.

Answer:

Mass = 23.36 g

Explanation:

Given data:

Number of particles of CO₂ = 3.20 ×10²³

Mass of  CO₂ = ?

Solution:

1 mole contain 6.022×`10²³ particles,

3.20 ×10²³ particles  × 1 mol / 6.022×`10²³ particles

0.531 mol

Mass of CO₂:

Mass = number of moles × molar mass

Molar mass = 44 g/mol

Mass =  0.531 mol× 44 g/mol

Mass = 23.36 g

Answer:

c

Explanation:

chemical change results from a chemical reaction where nothing is change example of chemical changes burning, cooking, rotting and rusting

Answer:

IM LOOKING FOR POINTSSSSS

Explanation:

PLS HELP

S

S

S

S

S

S

S

S

S

S

SS

SS

S

Answer:

because

Explanation:

because

Answer:

natural gas plant liquids

Explanation:

The ingredients that are important for the production of plastics are natural gas and plant liquids. The correct options are c and d.

Polymers are the primary component of a wide variety of synthetic or semisynthetic materials known as plastics. Due to their versatility and importance to civilization, plastics are a very important material. This is due to the fact that plastics can be bent and molded into a variety of objects, from plates to phones.

Radiation is to blame for this becoming possible. People who manufacture plastics can heat polymers sufficiently to allow them to bend by employing radiation. They can then be formed into a variety of things when this occurs.

Plastics are made from natural gases and liquids obtained from plants.

Therefore, the correct options are c, natural gas, and d, plant liquids.

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Answer:

0 electrons in outermost shell as it is a noble gas

Answer:

the valency of argon is 0

since it has complete valence shells , so it doesn't react with any other element

Answer:

iron and nickel

______________

Answer:

energy from glucose

Explanation:

Answer:

6 moles of Oxygen required

Answer:

6

Explanation:

I hope this helps with your question :)

Answer:

There have been seven horizontal rows of elements are called phases in the periodic table of elements. Groups, or families, are called vertical columns of elements. Metals, – anti, and metals are the most common ways of classifying the periodic table.

Explanation:

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{3.63 \times {10}^{23} }{ 6.02 \times {10}^{23} } = \frac{3.63}{6.02} \\ = 0.60299...[/tex]

We have the final answer as

Hope this helps you

Answer:

i have no clue whats going on here but imma act like i do.....

Explanation:

Answer:

The correct reaction is as follows:

2Mg + O2 → 2MgO

3. Synthesis

Explanation:

Chemical reactions are of different types depending on how they occur. One of these types is called SYNTHESIS OR COMBINATION REACTION. A synthesis reaction is that reaction in which two atoms of two elements are chemically combined to form a single molecule or compound. That is;

A + B → AB.

This is the case in this question where atoms of Magnesium (Mg) and oxygen (O) reacted to form a single compound of Magnesium oxide (MgO). Hence, it is said to be a SYNTHESIS REACTION.

Tennessine (Ts)

Element #117

Discovered: April 5, 2010

Answer:

B! Hope this helps! :)

Explanation:

option A is correct.biotic is a nother word for living

Answer:

option A would be the correct answer for the question below.

Explanation:

Which describes a similarity between abiotic and biotic factors?

Answer:

True

Explanation:

A physical property is a property that can be measured without changing the chemical composition of the substance.

The chemical composition of iron does not change when it conducts electricity so conductivity is a physical property.

Hope that helps.

Atoms of different element can not have same atomic number because only same type of atoms combine to form element. Atoms belonging to different element can have different atomic number. Therefore, the given statement is true.

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same. Two or more than two atoms with different physical or chemical properties can not combine together to form an element.

A physical property is a property that can be measured without changing the chemical composition of the substance. So,  ability of iron to conduct electricity is a physical property of iron

Therefore, the given statement is true.

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Answer:

Hcl Answer

Explanation:

may be this helpful!

Answer:

[tex]\boxed {\boxed {\sf A. \ Barium (Ba)}}[/tex]

Explanation:

Lewis dot structures illustrate the valence electrons in an element.

Calcium is in group 2.

The other elements in this group are:

So, all these elements have the same lewis dot structures because they have the same number of valence electrons.

Based on the answer choices, choice A is correct.