1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Neporo4naja [7]
2 years ago
12

The role of teeth in the digestive system?

Chemistry
2 answers:
GREYUIT [131]2 years ago
5 0
We use our teeth to chew our food and prepare food to travel through the rest of digestive system
USPshnik [31]2 years ago
4 0
Help saliva and makes food soft and easy to swallow
You might be interested in
If the mass of a material is 91 grams and the volume of the material is 20 cm3, what would the density of the material be?
AlekseyPX
Use the formula Density=Mass/Volume
8 0
3 years ago
Yusef adds all of the values in his data set and then divides by the number of values in the set. What is Yusef most likely find
Zanzabum

He is most likely finding the mean of the data.

7 0
2 years ago
Read 2 more answers
In a room full of air, the air is mainly composed of Nitrogen and Oxygen molecules (both at room temperature). Find (to two sign
zloy xaker [14]

Explanation:

Expression for the v_{rms} speed is as follows.

            v_{rms} = \sqrt{\frac{3kT}{M}}

where,   v_{rms} = root mean square speed

                     k = Boltzmann constant

                    T = temperature

                    M = molecular mass

As the molecular weight of oxygen is 0.031 kg/mol and R = 8.314 J/mol K. Hence, we will calculate the value of v_{rms} as follows.

               v_{rms} = \sqrt{\frac{3kT}{M}}

                            = \sqrt{\frac{3 \times 8.314 J/mol K \times 309.02 K}{0.031 kg/mol}}

                            = 498.5 m/s

Hence, v_{rms} for oxygen atom is 498.5 m/s.

For nitrogen atom, the molecular weight is 0.028 kg/mol. Hence, we will calculate its v_{rms} speed as follows.

                v_{rms} = \sqrt{\frac{3kT}{M}}

                              = \sqrt{\frac{3 \times 8.314 J/mol K \times 309.92 K}{0.028 kg/mol}}

                              = 524.5 m/s

Therefore, v_{rms} speed for nitrogen is 524.5 m/s.

3 0
3 years ago
Calculate the percentage by mass of the indicated element in the following compounds. Hydrogen in ascorbic acid, HC6H7O6, also k
Scorpion4ik [409]

Answer: The mass percent of hydrogen in ascorbic acid is 4.5 %

Explanation:

In C_6H_8O_6, there are 6 carbon atoms, 8 hydrogen atoms and 6 oxygen atoms.

To calculate the mass percent of element in a given compound, we use the formula:

\text{Mass percent of hydrogen}=\frac{\text{Mass of hydrogen}}{\text{Molar mass of ascorbic acid}}\times 100

Mass of hydrogen = 8\times 1g/mol=8g

Molar Mass of ascorbic acid =6\times 12g/mol+8\times 1g/mol+6\times 16g/mol=176g

Putting values in above equation, we get:

\text{Mass percent of hydrogen}=\frac{8g}{176}\times 100=4.5\%

Hence, the mass percent of of hydrogen in ascorbic acid is 4.5 %.

8 0
3 years ago
Why can characteristics properties be used to identify unknown substances
frozen [14]

Characteristic properties are used because the sample size and the shape of the substance does not matter.

5 0
2 years ago
Other questions:
  • What are the products of the chemical reaction that occurs when zinc metal is added to an aqueous solution of hydrochloric acid?
    6·1 answer
  • Which of the following does not participate in, nor is a component of, the electron transport chain? (Remember that molecules ca
    8·1 answer
  • This chart shows the experimental design of four students who are all observing what kind of bird seed birds tend to eat
    6·1 answer
  • If an element is lustrous, brittle, and a semi-conductor, how would you classify it?
    10·1 answer
  • For each molecule of glucose processed during glycolysis, the net yield is ____. 1. two molecules of NADH, two of ATP, and two o
    7·2 answers
  • List the exceptions to Metals showing a high density?
    9·1 answer
  • What is the mass of 0.28 moles of iron
    15·2 answers
  • Chemistry lab question. The lab is about the separation of mixtures using evaporation and filtration.
    5·1 answer
  • It get hotter towards the center
    5·1 answer
  • Which of the liquids you tested (isopropyl alcohol, water, and glycerol) displayed the greatest surface tension (greatest interm
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!