7. A bicycle rider is traveling up a hill. When the rider reaches the top of the hill, she
stops to rest. Then she travels down the hill. The diagram shows the rider in the
three different positions,
Which of these correctly describes the potential energy and kinetic energy of the bicycle rider ? I NEED HELP FAST !!

Answer:

B4

Explanation:

good day

Answer:

I think option A..

Explanation:

hope it's help uu

if wrong then sry

Answer:

A. Plants remove Co, from the atmosphere and use it to create glucose

Answer:

CCUCAAUGUCAAUCAU or you could try CCTCAACGTCAATCAT i could be wrong so sorry im not the best

Answer:

Replicated DNA: CCT-CAA-TGT-CAA-TCA-T

Transcription sequence (mRNA): CCU-CAA-UGU-CAA-UCA-U

Explanation:

Answer:

The pressure inside the bottle is 92.678 atm.

Explanation:

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:

P * V = n * R * T

In this case:

Replacing:

P* 0.500 L= 2.07 moles* 0.082 [tex]\frac{atm*L}{mol*K}[/tex] * 273 K

Solving:

[tex]P=\frac{2.07 moles* 0.082 \frac{atm*L}{mol*K} * 273 K}{0.500 L}[/tex]

P= 92.678 atm

The pressure inside the bottle is 92.678 atm.

Answer:

10 times

Explanation:

The study of chemicals and bonds is called chemistry.

The correct answer is [tex]NH_4(OH)[/tex].

Ammonium hydroxide is the base that helps to increase the ph of the solution and helps to neutralize the acidic effect.

The uses of ammonium hydroxide are as follows:-

These are the use of ammonium hydroxide.

Hence, the correct answer is [tex]NH_4(OH)[/tex].

For more information, refer to the link:-

https://brainly.com/question/12985618

Answer:

424.6g

Explanation:

Density is a measure of a substance's mass over its volume.

d = m/v

we can rearrange this equation to solve for mass algebraically.

dv = m

We can then substitute the given values for our variables in the problem and solve for our answer.

22mL(19.3g/mL)= 424.6g

Answer:

Explanation:

1.5 moles to molecules

1 mole = 6.02 x 10²³ molecules

1.5 moles = 6.02 x 1.5 x 10²³ molecules

= 9.03 x 10²³ molecules

2 )

Convert 1.204x10²⁴ molecules to moles

6.02 x 10²³ molecules  = 1 mole

1.204x10²⁴ molecules = 1.204x10²⁴ / 6.02 x 10²³ moles

= 2 moles

3 ) Convert 1.5x10^20 molecules to moles

6.02 x 10²³ molecules  = 1 mole

1.5x10²⁰ molecules = 1.5x10²⁰ / 6.02 x 10²³ moles

= .25 x 10⁻³ moles

= 2.5 x 10⁻⁴ moles .

4 )

Convert 0.35 moles to molecules

1 moles = 6.02 x 10²³ molecules

.35 mole = 6.02 x .35 x 10²³ molecules

= 2.1 x 10²³ molecules.

5 )

Convert 15 moles H₂O to atoms

1 moles = 6.02 x 10²³ molecules

15 moles = 15 x 6.02 x 10²³ molecules

= 90.3 x 10²³ molecules of water

1 molecule of water has 3 atoms in total

90.3 x 10²³ molecules of water  = 90.3 x 3 x 10²³ atoms

= 270.9 x 10²³ atoms .

6 )

0.75 moles CaSO₄ to atoms

1 moles = 6.02 x 10²³ molecules

.75 moles = .75 x 6.02 x 10²³ molecules of CaSO₄

= 4.515 x 10²³ molecules of CaSO₄

1 molecule of CaSO₄ = 6 atoms

4.515 x 10²³ molecules of CaSO₄ = 6 x 4.515 x 10²³ atoms

= 27.09 x 10²³ atoms .

Answer:

0.327214 mol

Explanation:

45.5/278.106=0.163607

Then, 0.163607x2= 0.327214

Answer:

Its on the picture.

Explanation:

Correct me if I am wrong :>

But hope it helps!

Can you please mark me as brainlest?

Its ok if you don't want to :>

Answer:

1. thermometer

2. thermal energy

3. specific heat

4. temperature

5. Celsius

6. heat

7. mass

Answer:

553.5 cm3

Reason:

1 mL = 1 cm3

Answer:

2C2H18 + 13O2 → 4CO2 + 18H2O (I balanced your equation)

Products - CO2 & H20

Answer:

1 year- 1 mole

time in general- amount of matter

1 second- 1 atom/ particle

Answer:

1 Year => 1 Mole

Time in General => Amount of Matter

1 Second => 1 Atom/Particle

Explanation:

These pairs make the most sense.

Hope it helps!!!

Answer:

okay so lets say i drop a ball that weighs 2 pounds off a building and a ball that ways 1 pound off the building at the same time the lighter ball would hit the ground first because its lighter and so they heavier it is the slower it drops the lighter it is the faster it drops

Explanation:

Answer:

Hello, I don't really have an actual answer, but I was hoping you could explain it to me? I have the same project and I am kind of confused.

Explanation:

Thank you and have a great day :)

Answer:

A good hydrogen ion acceptor

Answer:

Sorry I am not good at chemistry

Explanation:

The characteristics of the atoms and the periodic table allow to find the result for the number of protons, neutrons and electrons, the results in the table

The periodic table is a graphic representation where the chemical elements are placed by their atomic number, this table is organized in row and columns, where the elements of the same column have similar properties.

The period table indicates the atomic number, which is the number of protons, and the atomic mass, which is the sum of the protons plus the neutrons.

The atoms are neutral entities therefore the number of electrons must be equal to the number of protons.

It is asked to calculate the number of electrons, protons and neutrons of various chemical elements

Element Sodium,   symbol  Na

Atomic number (Z) 11

Atomic weights (M) 24

The number of protons is equal to the atomic number

      protons 11 protons

The number of neutrons is

      # neutrons = M - Z

      # neutrons = 24 -11

      # neutrons = 13 neutrons

The number of electrons is equal to the atomic number

      # electrons = 11

Element Yttrium,  symbol Y

Atomic Number 39

Atomic mass 89

Protons 39

Neutrons = 89-39 = 50

Electrons 39

Element Copper,  Symbol  Cu  

Atomic number 29

Atomic mass 64

protons 29

Neutrons = 64-29 = 35

Electrons 29

Element Technesium,  Symbol  Tc  

Atomic number 43

Atomic mass 98

protons 43

neutrons = 98 -43 = 55

electrons 43

Element Lead, Symbol  Pb  

Atomic Number 82

atomic mass 207

protons 82

neutrons = 207 -82 = 125

electrons 82

Element Thalium, Symbol  Ta  

Atomic Number 81

atomic mass 204

protons 81

neutrons = 204 -81 = 123

electrons 81

Element Hydrogen, Symbol  H  

Atomic number 1

Atomic mass 1

protons 1

neutrons 0

electrons 1

Element Carbon, Symbol C  

Atomic number 6

Atomic mass 12

Protons 6

neutrons = 12-6 = 6

electrons 6

Element Nitrogen, Symbol  N  

Atomic number 7

Atomic mass 14

protons 7

neutrons = 14-7 = 7

electrons 7

Element  Barium, Symbol  Ba  

atomic number 56

atomic mass 137

protons 56

neutrons = 137-56 = 81

electrons 56

with these results we complete the following table

Element   Symbol   Protons   Neutrons  Electrons

Sodium      Na              11              13                11

Yttrium          Y              39            50              39

Copper       Cu              29            35              29

Tecnetium  Te              43             55             43

Lead            Pb             82            125             82

Thallium      Ta             81              123             81

Hydrogen    H                1                0                 1

Carbon        C                6                6                6

Nitrogen      N                7                7                7

Barium       Ba             56               81              56

In conclusion using the characteristics of the atoms and the periodic table we can find the result for the number of protons, neutrons and electrons, the results in the table

Learn more here: https://brainly.com/question/11155928

Answer:

7.01 is the answer of the [H+] of a solution with a pH of 4.78

Answer:

A

Explanation:

It is correct please I hope it helps! :)

Answer:

i think the answer is letter C. From 35°c to 45°c

Explanation:

sorry if it is wrong

Answer:

Explanation:

3

Explanation:

The reaction expression is given as:

     Al(OH)₃  +   HNO₃   →    H₂O   +  Al(NO₃)₃  

To solve this problem, let us assign coefficient a,b,c and d to each specie;

          aAl(OH)₃  +   bHNO₃   →    cH₂O   +  dAl(NO₃)₃  

Conserving Al : a  = d

                  O:  3a + 3b  = c + 9d

                  H: 3a + b  = 2c

                  N: b  = 3d

let a = 1 , d  = 1, b  = 3 , c = 3

 Multiply through by 3;

a  = 1, b  = 3, c = 3 and d  = 1

  Al(OH)₃  +   3HNO₃   →    3H₂O   +  Al(NO₃)₃  

Answer:

false

Explanation:

because  i know it

Answer:

noble gases from what i learnt

Answer: 3.94 x 10^23 molecules

Explanation: hope this helps!