9. Which of Earth’s sphere consists of all living things? A. hydrosphere B. geosphere C. biosphere

Answer:

Depending on the deformity it will depend on the amount of the ice that is melted,it the majority is melted that is relevant to the heated liquid melting the ice,so yes only the water formalities of the melted ice.

Answer:

wait what?

Explanation:

brainliest pls

The none communicable disease in the given option is diabetes

A communicable disease is a type of disease that can be spread from one person to another.

Examples of communicable diseases include;

Thus, the none communicable disease in the given option is diabetes.

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Answer:

1 = D

2 = C

3 = A

4 = F

5 = G

6 = B

7 = E

Answer:

obesity means having too much fat

hemoglobin is a protein in red blood cells .

for example if your hemoglobin is low you are anemic.

obesity if you are overweight your health is at risk because of excess fat.

Answer:    which of the following is qualitative?

A. 100-calorie apple

B. 1-liter soda

C. triangular crystal

D. 10-inch brick  

answer is D

Explanation:

Explanation:

I hope it's helpful for you

1 mole of H₂O has more molecules than other compounds. The correct option is A.

A molecule is a collection of two or more atoms held together by attractive forces known as chemical bonds.

The International System of Units uses the mole as the unit of material quantity. How many elementary entities of a specific substance are present in an object or sample is determined by its quantity.

The tiniest component of any substance is capable of existing independently while maintaining its chemical and physical properties and is composed of one or more elements.

Out of these molecules, water has more molecules than  1 mole Al(OH)₃ and 1 mole NaCl. They don't have the same number of moles.

Therefore, the correct option is A. 1 mole H₂O.

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Answer:

i honestly dont know how this is showing up on my thing i am 13

Explanation:

sorry i dont know at all

Answer:

A.Yes

Explanation:

Considering the ideal gas law, a sample weighing 9.49 g occupies 68.67 L at 353 K and 2.00 atm.

Ideal gases are a simplification of real gases that is done to study them more easily. It is considered to be formed by point particles, do not interact with each other and move randomly. It is also considered that the molecules of an ideal gas, in themselves, do not occupy any volume.

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, you know:

Replacing:

2 atm× V = 4.745 moles× 0.082[tex]\frac{atmL}{molK}[/tex]× 353 K

Solving:

V = (4.745 moles× 0.082[tex]\frac{atmL}{molK}[/tex]× 353 K)÷ 2 atm

V= 68.67 L

Finally, a sample weighing 9.49 g occupies 68.67 L at 353 K and 2.00 atm.

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Answer:

Endoplasmic reticulum

Explanation:

Answer:

Acid

Explanation:

Answer:

the second ionization energy

Explanation:

The second ionization energy is always larger than the first ionization energy, because it requires even more energy to remove an electron from a cation than it is from a neutral atom.

Answer:

i got 35 but i am as lost as you are so don't really take my answer as a trusted answer

The grams of solute are required.

The mass of solute is 3.5 g

c =  Molarity = 0.1 M

M = Molar mass = 350 g/mol

V = Volume of solution = 100 mL = 0.1 L

n = Number of moles

m = Mass of solute

Molarity is given by

[tex]c=\dfrac{n}{V}\\\Rightarrow n=cV\\\Rightarrow n=0.1\times 0.1\\\Rightarrow n=0.01\ \text{moles}[/tex]

Molar mass is given by

[tex]M=\dfrac{m}{n}\\\Rightarrow m=Mn\\\Rightarrow m=350\times 0.01\\\Rightarrow m=3.5\ \text{g}[/tex]

The mass of solute is 3.5 g

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Answer:

Chemical formula: HNO₃

Melting point: −42 °C (−44 °F; 231 K)

Molar mass: 63.012 g·mol−1

Solubility in water: Miscible

Explanation:

When Conc HNO3 acid leaks into seawater presumed to be largely consisting of Sodium Chloride and other dissolved salts, I won't consider it as a chemical reaction rather it is a Physical Change. I presume this activity as a mixture when the acid been the solute becomes a contaminants

Answer:

Explanation:

Answer:

Hydrogen Chloride is 74.64 grams.

Explanation:

Using the given information, we can find the amount of grams of hydrogen chloride that take place in the reaction.

Due to the Law of Conservation of Mass, the mass of the system must remain constant. To find the value of x, make the equation below.

[tex]24.30 + x=2.04 + 96.90[/tex]

The left side represent the reactant side of the chemical reaction and the right side represents the product side.

[tex]2.04 + 96.90= 98.94[/tex]

[tex]24.30+x=98.94[/tex]

[tex]24.30 - 24.30 + x= 98.94 - 24.30[/tex]

[tex]x=74.64[/tex]

Matter is neither created nor destroyed. Therefor, option (A) is correct.

The Law of Conservation of Mass is a fundamental principle in science that states that matter cannot be created or destroyed in a chemical reaction, only transformed from one form to another. This means that the total mass of the reactants in a chemical reaction must be equal to the total mass of the products.

The Law of Conservation of Mass was first introduced by Antoine Lavoisier, a French chemist, in the 18th century. The law has been extensively tested and verified through numerous experiments in the field of chemistry. It is an essential concept for understanding the behavior of matter in chemical reactions and for the development of technologies that depend on chemical reactions, such as energy production, medicine, and materials science.

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Answer:

Hydrogen (H2) When a burning splint is introduced to a sample of pure hydrogen gas, it will burn with a popping sound. Oxygen (O2) When a smoldering splint is introduced to a sample of pure oxygen gas, the splint will reignite.

Answer:

The burning splinter makes hydrogen and oxygen react and you hear a pop sound.

Explanation:

Answer:

Explanation:

Decreases

Answer:

Hydrogen ions decrease. It reduces the concentration of ions.

Explanation:

Answer:

An ice rink has the least amount of friction.

I hope this helped at all.

Which surface has the least amount of friction?

An ice rink

A grassy field

A paved road

A sidewalk

Answer:

Answer:

Decreasing the temperature of the copper made the final temperature decrease.

Heat emitted by copper reduces as copper's mass decreases. As the mass of copper lowers due to a decrease in heat gain by water, the final temperature also drops.

The transfer of kinetic energy from an energy source to a medium, an object, or from one to the other is referred to as the creation of heat. The sun is the source of all energies. It is the natural source of solar energy, heat, and light. Thermal energy can move through three different channels: conduction, convection, and radiation.

Therefore, the increase in temperature is always proportionate to the mass of water. Thus, the final temperature will be lower if we increase the water mass. The temperature will be lower in the end. The density reduces as volume grows. Consequently, density drops as temperature rises.

Thus, heat emitted by copper reduces as copper's mass decreases. As the mass of copper lowers due to a decrease in heat gain by water, the final temperature also drops.

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Answer:

Hi there

Thermal Energy and Chemical Reactions

The device controlled the activation as shown by the water holding room temperature for 15 seconds until activation by crushing the pills. The temperature rose 30° over two minutes,showing a measurable exothermic reaction from the Calcium Chloride dissolving in the water.

Pour 5mL water in a quart bag

Place Thermometer in the bag to make contact

Fill two gelatin 000 capsules with 1 gram of Calcium Chloride

Place capsules into the bag

Wait 15 seconds to crush the capsules while they are submerged in the water

-Temperature

0 seconds 75 degrees

15 seconds - Activation 75 degrees

30 seconds 85 degrees

60 seconds 95 degrees

90 seconds 104 degrees

120 seconds 105 degrees

Conclusion: During a reaction, thermal energy from the environment is converted into chemical energy stored in the products.

Brainliest plz

Answer:

(Hope this helps can I pls have brainlist (crown)☺️)

Explanation:

Because the atoms in metals form a matrix through which outside electrons may easily travel, metals are good conductors of electricity and heat. They generate a sea of electrons around the positive nuclei of the interacting metal ions, rather than circling their particular atoms.

The free flow of shared electrons can carry an electric current through a metal. Carbon atoms join with iron atoms to create bonds.

Answer:

The answer to your question is 15

In a chemical reaction, only the atoms present in the reactants can end up in the products. No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.