All categories

3 years ago

After the food has been chewed and lubricated, it is pushed by the tongue into the___________.

2 answers:

7 0

Pharynx is cone-shaped passageway leading from the oral and nasal cavities in the head to the esophagus and larynx. The pharynx chamber serves both respiratory and digestive functions

After the food has been chewed and lubricated, it is pushed by the tongue into the Pharynx

MrRissso [65]3 years ago

6 0

The answer is pharynx

You might be interested in

The carbon cycle is one of many biogeochemical cycles on Earth. Can you identify the main features of a biogeochemical cycle and

podryga [215]

Answer:

The carbon cycle mainly is the relationship among carbon dioxide, glucose and carbon.

Explanation:

The carbon cycle as a reference point we can say that it starts in air, with the carbon dioxide dissolved in it. Plants or phytoplancton can absorbed it to transform into glucose or other organic compound useful for plants of plancton. During this process the carbon cycle is closely related with oxygen cycle and metabolic processes in living things.

After the carbon is absorbed it can be regenerating as carbon dioxide by bacteria or animals to the air after getting the sufficient carbon for the glucose structure or another organic compound necessary for these living things.

The other way of carbon, is that can be deposit in soil as carbon and with time can be transformed into oil by bacteria but in an anaerobic environment not in an aerobic environment.

7 0

4 years ago

How are alpha, beta and gamma radiation characterized in terms of mass and charge?

Anarel [89]

Beta radiation - negative charge and the mass of an electron
Gamma radiation- no mass and no charge
Alpha radiation- He 4+/2

7 0

3 years ago

When elemental sodium reacts with water, sodium hydroxide and hydrogen will form. What mass of sodium (in grams) must be reacted

tangare [24]

Answer:

0.703g Na must reacted

Explanation:

The reaction of Sodium, Na, With water, H₂O is:

2Na(s) + 2H₂O(l) → 2NaOH(aq) + H₂(g)

Where 2 moles of sodium reacts with an excess of water to produce 1 mole of hydrogen

To solve this question we have to use PV = nTR to solve the moles of the gas. With the moles of hydrogen we can find the moles of sodium that reacted and its mass:

Moles H₂:

PV = nRT

PV /RT = n

Where P is pressure = 1.15atm

V is volume in liters = 0.325L

R is gas constant = 0.082atmL/molK

T is absolute temperature = 25°C + 273 = 298.0K

1.15atm*0.325L / 0.082atmL/molK*298.0K = n

0.0153 moles of hydrogen are produced

Moles Na:

0.0153 moles H₂ * (2moles Na / 1mol H₂) = 0.0306 moles Na

Mass Na -Molar mass: 22.99g/mol-:

0.0306 moles Na * (22.99g / mol) =

<h3>0.703g Na must reacted</h3>

8 0

3 years ago

What type of rock is quartzite

Ilya [14]

Quartzite is a nonfoliated metamorphic rock

6 0

3 years ago

Why are pure liquids and solids not included in the reaction quotient or the equilibrium constant expression for a given heterog

AfilCa [17]

Pure liquids and solids at the equilibrium stage:

Pure solids and pure liquids are not included in expressions for the equilibrium constant of heterogeneous equilibria since their concentrations are constant across time. Therefore, including it in our equilibrium expression is not significant.

Equilibrium expression:

When a certain chemical reaction is in equilibrium, the rates of the forward and backward reactions are equal, which means that there is no net change in the concentrations of the reactants and products and that the reaction mixture's composition does not change.

The concentration of solid and liquid:

Solid or liquid concentration,

= No. of Moles/ Volume in L

= Mass/(Volume × molar mass)

= Density/ Molar mass

Pure solids and liquids have constant densities and molar masses at a constant temperature.

Because of this, they have constant molar concentrations, which means that they are not considered in the equilibrium constant for a heterogeneous reaction.

Learn more about the pure solids, liquids, and heterogenous mixture here,

brainly.com/question/1811148

#SPJ4

3 0

2 years ago