Match each situation below to a letter on the illustration.
Ball
starts
here

Letter
Situation
Potential energy is the highest
Losing kinetic energy, gaining potential energy
Kinetic energy is highest
Losing potential energy, gaining kinetic energy

Answer:

So the empirical formula is C14H18N2O5

Explanation:

C = 57.2% = 12g/mol

H = 6.1% = 1g/mol

N = 9.5% = 14g/mol

O = 27.2% = 16g/mol

Empirical Formula for compound hmm

Assume

C = 57.2g

H = 6.1g

N = 9.5g

O = 27.2g

So we have

C = 57.2g/12g =  4.76  moles

H = 6.1g/1g      =  6.10   moles

N = 9.5g/14g   =  0.68  moles

O = 27.2g/16g =  1.70   moles

Divide each mole value by the smallest number of moles calculated.  Round to the nearest whole number.

C =  4.76  moles / 0.68 moles = 7

H = 6.10   moles / 0.68 moles = 9

N = 0.68  moles / 0.68 moles = 1

O = 1.70   moles / 0.68 moles = 2.5

Ok so we now have the ratios but for O it's 2.5, have to be whole numbers so we will need to double all the numbers.

C = 14

H = 18

N =  2

O =  5

So the empirical formula is C14H18N2O5

Answer:

d.

Explanation:

a. beta radiation - electrons that have negative charge, and when they leave a nucleus , the charge or atomic number of the nucleus will change.

b. Alpha radiation - nuclei of He, atomic number and mass number will be changed.

c. positron radiation - positrons are similar to electrons but have positive charge, so , the charge or atomic number of the nucleus will change.

d. gamma radiation is electromagnetic waves, does not have charge and mass.

Answer:

the answer is d. gamma radiation

Explanation:

Answer:

The answer to your question is given below

Explanation:

1. Data obtained from the question include:

Hydrogen ion concentration, [H+] = 1x10^-9M

pH =..?

pH = - log [H+]

pH = - log 1x10^-9

pH = 9

2. Data obtained from the question include:

pOH = 3

pH =.?

Recall:

pH + pOH = 14

pH + 3 = 14

Collect like terms

pH = 14 - 3

pH = 11

3. Data obtained from the question include:

Hydroxide ion concentration, [OH-] = 1x10^-2M

pH =..?

First, we shall determine the pOH. This is illustrated below

pOH = - Log [OH-]

pOH = - Log 1x10^-2

pOH = 2

Finally, we can obtain the pH as follow:

pH + pOH = 14

pOH = 2

pH + 2 = 14

Collect like terms

pH = 14 - 2

pH = 12

4. Data obtained from the question include:

pOH = 7

pH =.?

Recall:

pH + pOH = 14

pH + 7 = 14

Collect like terms

pH = 14 - 7

pH = 7

Answer:

They can warm up the water. Sugar dissolves much faster in warm/hot water.

A perfect example of this is when you put sugar in your hot coffee/tea -> it will dissolve almost immediately. If you put sugar in cold water, you will have to stir it for quite some time before it dissolves.

Answer:

Archaea, Bacteria, Protista, Fungi, Plantae, and Animalia

What is characteristics of the 6 kingdoms.

6 kingdoms of what? Are you talking about biology?

If yes I assume you're talking about the defitions for the animal kingdom made by Woese and his colleagues in 1977.

Eubacteria:  Single-celled bacterial organisms.

Archaebacteria: Single celled bacterial organisms that live in extreme enviroments

Protista : Single-celled organisms more complex than bacteria

Plantae: Multi-celled, complex organisms that produce their own food

Fungi: Multi-celled organisms that don't produce their own food

Animalia: Complex, multi-celled, organisms that consume other organisms for food.

Answer:

In CO, the oxidation number of carbon is +2 and that of oxygen is -2

In H2 the oxidation number of hydrogen is zero

In CH3OH, the oxidation state of carbon is -2, that of hydrogen is +1 and that of oxygen is -2

Explanation:

The oxidation number of an element in any compound is defined as the electrical charge that the element appears to have as determined by a set of arbitrary rules. These rules make it possible to calculate the oxidation number of an atom in a compound given the oxidation numbers of other atoms in the same compound.

In CO, the oxidation number of carbon is +2 and that of oxygen is -2

In H2 the oxidation number of hydrogen is zero

In CH3OH, the oxidation state of carbon is -2, that of hydrogen is +1 and that of oxygen is -2

Answer:

neon - non metal

Explanation:

Answer:

Answer:

Explanation:

The temperature changes for the water and the metal is

ΔT (water) = 4.7°C

ΔT (metal) = - 72.9°C

The quantity or amount of heat per unit mass required to raise the temperature of a body by one degree Celsius is known as specific heat. The unit of specific heat are joules or calories per gram per degree Celsius. Specific heat is an intensive property.

Relationship between temperature and heat is expressed as:

Q = mcΔT

where,

Q is heat energy in Joules (J)

m is mass (in grams)

c is specific heat in J/g°C

ΔT is change in temperature

Now calculate the temperature changes for the water

ΔT (water) = T(final) - T(initial)

                 = 27.1 - 22.4

                 = 4.7°C

Now calculate the temperature changes for the metal

ΔT(metal) = T(final) - T(initial)

                = 27.1 - 100

                = -72.9°C

Thus, from the above calculation we can see that the temperature changes for the water and the metal is

ΔT (water) = 4.7°C

ΔT (metal) = - 72.9°C

Learn more about the specific heat here: https://brainly.com/question/21406849

#SPJ2                

Answer:

36 degrees farenheit

Answer:

The answer is 2C8H18 + 25O2 → 16CO2 + 18H2O .

(Correct me if I am wrong)

Answer:

Which of the following are not examples of matter, well clouds are matter, gasoline is matter, ice is matter, so it would be light.

Answer:

1.65×10^-3 L or 1.65 mL

Explanation:

Number of moles of magnesium in the excess reagent= mass of excess reagent/ molar mass of magnesium

Mass of excess magnesium= 0.1594 g

Molar mass of magnesium= 24 gmol-1

Number of moles of magnesium= 0.1594/24 = 6.6×10^-3 moles

From the reaction equation;

1 mole of magnesium reacted with 2 moles of HCl

6.6×10^-3 moles of magnesium will react with 6.6×10^-3 moles × 2= 13.2×10^-3 moles of HCl

But we know that;

Number of moles of HCl= concentration of HCl × volume of HCl

Volume of HCl= number of moles of HCl/ concentration of HCl

Since concentration of HCl= 8.00M

Volume of HCl= 13.2×10^-3/8.00= 1.65×10^-3 L or 1.65 mL

Answer:

In the year 1850, Rudolf Virchow was studying cells under a microscope, when he observed that cells were dividing and forming new cells. Realizing what he had observed, he understood that living cells reproduce new cells through division

Answer:

b, the number of protons added to the number of neutrons

Explanation:

Answer:

CaCO3 + 2HCl = CaCl2 + CO2 + H2O

Explanation:

CaCO3 + HCl = CaCl2 + CO2 + H2O

Error in equation should be HCl on left hand side not HC

Left Side

Ca = 1

C = 1

O = 3

H = 1

Cl = 1

Right Side

Ca = 1

C = 1

O = 3

H = 2

Cl = 2

So we'll try and balance the Chlorine

CaCO3 + 2HCl = CaCl2 + CO2 + H2O

Left Side

Ca = 1

C = 1

O = 3

H = 2

Cl = 2

Right Side

Ca = 1

C = 1

O = 3

H = 2

Cl = 2

Yay it worked

Answer:

Oxygen

Explanation:

A glowing splint applied to a sample of gas "oxygen" will relight.

Answer:

The gravitational  force between the satellites is [tex]3.81\times 10^{10}\ N[/tex].

Explanation:

Mass of satellite 1, [tex]m_1=5.3\times 10^{12}\ kg[/tex]

Mass of satellite 2, [tex]m_2=3.5\times 10^8\ kg[/tex]

Distance between masses is 1.8 m

It is required to find the gravitational  force between the satellites. The formula used to find the force between two masses is given by :

[tex]F=G\dfrac{m_1m_2}{r^2}\\\\F=6.67\times 10^{-11}\times \dfrac{5.3\times 10^{12}\times 3.5\times 10^8}{(1.8)^2}\\\\F=3.81\times 10^{10}\ N[/tex]

So, the gravitational  force between the satellites is [tex]3.81\times 10^{10}\ N[/tex].

Answer:

600 V

Explanation:

The transformer equation helps us to calculate the relationship between the ratio of the number of turns of coils in the input and output sources to their respective voltages.

It states that the ratio of the secondary to primary voltages in a transformer equals the ratio of the number of loops in their coils.

Number of input turns/Number of output turns = input voltage/output voltage

10/50 = 120V/output voltage

output voltage = 120 V/0.2

Output voltage = 600 V

Answer:

natural gas releases 50 to 60 percent less carbon dioxide than coal

Explanation:

Natural gas is a fossil fuel, though the global warming emissions from its combustion are much lower than those from coal or oil. Natural gas emits 50 to 60 percent less carbon dioxide (CO2) when combusted in a new, efficient natural gas power plant compared with emissions from a typical new coal plant [1].

Answer:

5.7 M

Explanation:

You have .390 L of 4.6 M HCl.

.390 L * 4.6 mol/L = 1.794 mol HCl

.390-.074=.316 L solvent remaining

1.794 mol/.316 L=5.7 M HCl

Answer:

Can you explain a little bit more?

Explanation:

Answer:

more

Explanation:

Answer:

A. More than on the Earth

Explanation:

Answer:

Units used to measure atomic radius:

Angstroms (Å): This the most common unit used. Equivalent to 1.0 x 10-10 meters.

Nanometer (nm): Equivalent to 1.0 x 10-9 meters.

Picometer (pm): Equivalent to 1.0 x 10-12 meters.

Answer:

the air would be much cleaner and better for us to breath.

Explanation:

Answer:

Solid

Explanation:

Solid has a definite shape and its molecules have high density.

Hope this will help you.