30 points for answering: Solve all 4 questions.


1. Listening to the radio is an example of _______ energy.

A. sound

B. light

C. heat

D. chemical


2. Turning on and listening your favorite TV show is an example of:

E. light energy to kinetic energy

F. electrical energy to sound energy

G. heat energy to light energy

H. sound energy to chemical energy


3. Eating a taco is an example of ______ energy.

I. light

J. chemical

K. sound

L. heat


4. A rabbit eating grass and then running away from a coyote is an example of:

M. light energy to heat energy

N. sound energy to light energy

O. chemical energy to electrical energy

P. chemical energy to mechanical energy

Answer:

Gas State cause the waters boiling point is 100 degrees Celsius

Explanation:

Answer: a gas

Explanation: at 100 degrees Celsius water goes from a liquid to a gas. so any farther is at the gaseous state.

Hope this helps :)

Answer:

the answer should be D, I hope this helps!

Answer:

Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body.

Chromosomes are structures within cells that contain a person's genes. A trait is any gene-determined characteristics and is often determined by more than one gene.

for study island:

A single trait can be controlled by multiple genes.

A single gene can influence multiple traits.

Answer: The answer is 4

Explanation:

Answer:

[tex]Cu_2O[/tex]

Explanation:

Hello!

In this case, according to the law of conservation of mass, it is possible to realize that the mass of oxygen comes from the subtraction of the total mass and the mass of copper:

[tex]m_O=5.62g-5.00g\\\\m_O=0.62gO[/tex]

Next, we compute the moles of both Cu and O given their atomic masses:

[tex]n_{Cu}=5.00gCu*\frac{1molCu}{63.546gCu}=0.0787molCu\\\\n_O=0.62gO*\frac{1molO}{16.0 gO}=0.03875molO[/tex]

Now, we divide by the moles of oxygen as the fewest ones, in order to calculate their subscripts in the empirical formula:

[tex]Cu=\frac{0.0787}{0.03875} =2.0\\\\O=\frac{0.03875}{0.03875} =1[/tex]

Therefore, the empirical formula turns out to be:

[tex]Cu_2O[/tex]

Best regards!

when hydrogen and oxygen combine then they form water as product

also in neutralization reaction water form as product

hope it helps

Water is always a product in a type of chemical reaction called a neutralization reaction.

A reaction is a process that involves the transformation of one or more substances into one or more different substances.

Neutralization reaction is type of reaction occurs when an acid and a base react together to form a salt and water. The general equation for a neutralization reaction is:

[tex]\rm acid + base \rightarrow salt + water[/tex]

In this type of reaction, the hydrogen ions ([tex]\rm H^+[/tex]) from the acid combine with the hydroxide ions ([tex]\rm OH^-[/tex]) from the base to form water ([tex]\rm H_2O[/tex]). The remaining ions from the acid and the base combine to form a salt.

Therefore, water is always a product in a neutralization reaction, which occurs when an acid and a base react together to form a salt and water.

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Answer:

c.11.43 g of aluminum hydroxide

Explanation:

Answer and Explanation:

If the future did not address global warming properly, then the world will become too hot faster than it should, and the days will get extremely hot, and in the distant future, lead to our extinction.

To address this problem, we can spread the awareness about it, get people to think open minded and not think that global warming is a joke, and plant trees, which takes in the carbon dioxide we exhale.

#teamtrees #PAW (Plant And Water)

Answer:

we cant draw jn this

Explanation:

because it contin citric acid

Answer:

the rate at which sulfur dioxide is being produced is 0.8993 kg per second

Explanation:

Given the data in the question;

we write the balanced chemical reaction

2H₂S + 3O₂ → 2SO₂ + 2H₂O

now we calculate the number of moles of oxygen by using an ideal gas equation; PV = nRT

n = PV/RT

so we substitute in our values

n = ( 0.77 × 1.01325 × 10⁵ × 994 × 10⁻³ ) / ( 8.314 × (170 + 273 )

n = 77552.1285 / 3683.102

n = 21.056 mol

so, moles of SO₂  produced = 2/3 × 21.056 = 14.0373 moles

Hence, the production rate will be;

⇒ 14.0373 × 64.066

= 899.3 g/s

= 0.8993 kg/s

Therefore, the rate at which sulfur dioxide is being produced is 0.8993 kg per second

Answer:

1. 25.19

2. 301.57

Explanation:

it says it's correct...

The conversion of units of temperatures from one scale to the other which is measure by Carla and Maurice are given as.

298.34 K = 25.34°C

28.42°C = 301.42 K

The temperature can be measure by using three units.

Relationship between Kelvin (K) and Celsius (°C)

Let the value of temperature in Celsius (°C)  unit as X °C, then value of this temperature in  Kelvin (K) is,

X °C = 273 + X °C = (273 + X) K

Let the value of temperature in Kelvin (K) as Y K , then value of this temperature in Celsius (°C) is,

Y K =  Y K - 273 = (Y - 273) °C

If 298.34 K

Then 298.34 K = 298.34 K - 273 = 25.34°C

If 28.42°C

Then, 28.42°C =  273 + 28.42°C = 301.42 K

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Answer:

wdyes giid gefwefgfw

Explanation:

egtetethe sanswers fe

Answer:

Shared (bonding) electrons : 8

Unshared (lone, non-bonding) electrons : 16

Explanation:

The Lewis dot stricture of the molecule attached to this answer shows us all the valence electrons present in the molecule.

Altogether, we have a total number of 24 valence electrons in SO3.

There are eight electrons shared between atoms of elements, these are the bonding electrons.

There are sixteen electrons that are not shared between atoms of elements, These are the lone or non-bonding electrons.

Hence, there are four shared pairs of electrons and eight pairs of unshared electrons.

Answer:

Non-metal

Explanation:

A non-metal is a substance that possesses the following characteristics:

- It is brittle i.e can break easily

- It does not conduct heat and electricity

- It is not lustrous i.e does not shine when polished.

According to this question, LEEN was observing the physical properties of elements in order to classify them. He found that the first element was dull, brittle, and did not conduct heat. This makes it a NON-METAL.

Answer:

53.5gram.

Explanation

Explanation: number of moles = number of molecule ÷ avogadro's number. => moles = 6.022 × 10²³ ÷ 6.022 × 10²³ = 1 mole. mass of 1 mole of NH4Cl = 1 × molar mass.

Answer:

it's a temperature where a solid will melt

Explanation:

hece ,, it is your answer you can see

The new volume with raised temperature can be find out using Charles's law. When the temperature of the gas is raised to 20 to 30 degree celsius, the volume will increase from 3 L to 4.5 L.

Charles law states that at constant pressure, the volume and temperature of a gas are in direct proportion.

Hence V/T = a constant.

Let V1 and T1 bet the initial volume and temperature and V2 and T2 be the final volume and temperature respectively. Then we can write it as:

[tex]\rm \frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}[/tex]

It is given that the initial volume and temperature of the gas are 3 L at 20 degree Celsius. The final temperature is 30 degree celsius then the final volume can be calculated as :

V2 = V1 T2/ T1

     = (3 L × 20 °C) / 30 °C

     = 4.5 L.

Hence, the final volume of the gas is 4.5 L.

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Answer:

750 mmHg

Explanation:

From the question given above, the following data were obtained:

Partial pressure of CO₂ (Pₐ) = 250 mmHg

Partial pressure of N₂ (P₆) = 375 mmHg

Partial pressure of He (P꜀) = 125 mmHg

Pressure of the mixture (Pₜ) =?

The pressure of the mixture of the gases can be obtained as follow:

Pₜ = Pₐ + P₆ + P꜀

Pₜ = 250 + 375 + 125

Pₜ = 750 mmHg

Therefore, the pressure of the mixture of the gases is 750 mmHg

Answer:

See Explanation

Explanation:

An electrolyte is a solution which is able to conduct electricity. An electrolyte conducts electricity because of the presence of ions which move around in the solution.

Ba(OH)2 and H2SO4 are composed of ions; these ions are the charge carriers in solution and are responsible for the conductivity of the solution and the glow of the bulb.

When Ba(OH)2 and H2SO4 are mixed, the following reaction occurs;

Ba(OH)2(aq) + H2SO4(aq) -------->BaSO4(s) + 2H2O(l)

The formation of the BaSO4(s) precipitate removes the ions that are responsible for the conductivity of the solution hence the  light bulb of the conductivity apparatus dims and eventually fades completely.

Explanation:

ANSWERS :-

1)

[tex]\red{2}Na + Br2 → \red{2}NaBr[/tex]

2)

[tex]\blue{2}C4H6 + \blue{11}O2 → \blue{8}CO2 + \blue{6}H2O[/tex]

3)

[tex]H3PO4 + \green{3}LiOH → \green{3}H2O + Li3PO4[/tex]

4)

[tex]Ca(NO3)2 + K2SO4 → CaSO4 + \pink{2}KNO3[/tex]

5)

[tex]\orange{2}H2O2→\orange{2}H2O+O2[/tex]

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[tex]\large\sf\red{thank \: you}[/tex]

Answer:

Atomic theory is the scientific theory that matter is composed of particles called atoms. Atomic theory traces its origins to an ancient philosophical tradition known as atomism. ... An atom is now defined as the basic particle that composes a chemical element.

Explanation:

Hope i helped

Answer:

2 joule

Explanation:

10 gram= 0,01kg

The ball has kinetic enegry

K=1/2 *m *speed²

K=1/2 *0,01 * 400

K=2 Joule

Answer:

D

Explanation:

A buffer solution contains (1)a weak base and its salt, or (2) a weak acid and its salt.

So, the combination of the weak acid CH3COOH and its salt CH3COONa will make a buffer.

Answer:

D. CH3COOH and CH3COONa

Explanation:

A buffer is made of:

- a weak acid + its conjugate base

- a weak base + its conjugate acid

A. NaOH is a strong base

B. KOH is a strong base

C. HCl is a strong acid