a movable chamber has a volume of 18.5 L (at temperature of 18.5 C) assuming no gas escapes and the pressure remains constant what is the temperature when the chamber has a volume of 19.8 L

Answer: solid,liquid & gas

Explanation:

Three states of water

Water in the solid state e.g Ice block

Water in the liquid state e.g fluids

Water in the gaseous state e.g vapour

Final answer:

The pH of a solution is calculated using the hydrogen ion concentration in mol/L (molarity) by taking the negative logarithm of that concentration.

Explanation:

The property used to calculate the pH of a solution is A. The hydrogen ion concentration in mol/L. To calculate pH, we first measure the concentration of hydrogen (H+) ions in moles per liter (molarity). Then, we take the negative logarithm of this concentration to find the pH value. For instance, a concentration of 0.01 M H+ ions results in a pH of 2 because the negative log of 0.01 is 2. The pH scale typically ranges from 0 to 14, with 7 being neutral. A pH less than 7 indicates an acidic solution, while a pH greater than 7 indicates a basic solution.

Answer:

0.3M

Explanation:

Molarity of a solution is given by;

M=n/v

Where;

n= number of moles of solute = mass of solute / molar mass

v= volume of solution

n= mass of CaCl2 / molar mass of CaCl2

Mass of CaCl2 = 0.5

Molar mass of CaCl2 = 40 + (2×35.5)

= 111g/mol

n = 0.5/111 = 0.0045mol

volume, v= 15mL = 15/1000 L = 0.015L

Note that molarity is in mole per liter, hence we convert 15mL to L. 1mL=1/1000L

M =0.0045/0.015

M=0.3mol/L

Therefore, the molarity of the solution is 0.3M

Answer:

102

Explanation:

(20+1+30)*2

you add the total number of atoms that can be found in one molecule of vitamin A then multiply by 2

Final answer:

To find the total number of atoms in two molecules of vitamin A, we multiply each type of atom by two and add the totals together, resulting in 102 atoms.

Explanation:

The question is asking to calculate the total number of atoms in two molecules of vitamin A, based on the given composition of one molecule of vitamin A. According to the question, a single molecule of vitamin A contains 20 carbon atoms, 30 hydrogen atoms, and 1 oxygen atom. To find the total number of atoms in two molecules, we simply multiply the number of each type of atom by two and then add up the totals.

For carbon: 20 atoms × 2 = 40 atoms
For hydrogen: 30 atoms × 2 = 60 atoms
For oxygen: 1 atom × 2 = 2 atoms

Adding these together gives us:
40 (carbon) + 60 (hydrogen) + 2 (oxygen) = 102 atoms

Answer:

a

Explanation:

a

Answer:

Reactants are gathered in chloroplasts.

Explanation:

Photosynthesis is a process unique to autotrophic organisms like plants. It is the process whereby plants use energy from sunlight to make their own food (chemical substance). The photosynthetic process occurs in two stages in the Chloroplast viz: Light dependent stage and light-independent stage.

In the light dependent stage, the plant captures energy from sunlight via its Chlorophyll pigment and uses it to break down water molecules (H2O) in a process called PHOTOLYSIS OF WATER. This process brings about the electrons and protons needed to form NADPH and ATP molecules respectively. This process occurs in the thylakoid membrane of the CHLOROPLAST.

In the light independent stage, also known as Calvin cycle, the plant uses the NADPH and ATP molecules produced in the light stage to reduce Carbondioxide (CO2), which enters through the stomata of the plant, and power the formation of glucose molecule (C6H12O6).

Hence, based on the steps listed by Jeremy for the photosynthetic process, the gathering of reactants (CO2, H2O and light energy) in the Chloroplast of the plant best classifies those steps

Explanation:

The best definition of a watershed is Option(A) Area that collects precipitation and drains it to the lowest point.

A watershed is the area of land where all of the water that drains off at its lowest point of it goes into the same place- a river, stream or lake. The smallest watersheds are the drainage areas for small streams and lakes. It can also be at the lowest point like a creek or a river.

To learn more about watershed, refer -

https://brainly.com/question/3097550

#SPJ2

Answer:

Every single living thing are comprised of cells. Cells are the fundamental units of structure and capacity in living things. New cells are delivered from existing cells.

Answer:

D. acids

Explanation:

I hope this helped

The volume of that 12M stock solution of HCL must be diluted to generate 6.0 L of 0.50 M would be:

C). 250 mL

Given that,

Stock solution of HCL = 12 M

Amount of HCL to be produced = 6.0 L of 0.50 M

To find,

The volume of stock solution = (0.5 × 6)/12

= 0.25 l

By converting 0.25 liters into ml,

= 0.25 × 1000

= 250 ml

∵ 250 ml is the amount of HCL required.

Thus, option C is the correct answer.

Learn more about "Volume" here:

brainly.com/question/1578538

Answer: 274.75 mL

Explanation:

Initial volume of gas V1 = 250.0 mL

Initial temperature of gas T1 = 30.0 C

Convert temperature in Celsius to Kelvin

(30.0°C + 273 = 303K)

New volume V2 = ?

New temperature T2 = 60.0 C

(60.0°C + 273 = 333K)

Since, volume and temperature are involved while pressure is constant, apply the formula for Charles law

V1/T1 = V2/T2

250.0 mL/303K = V2/333K

Cross multiply

250.0 mL x 333K = 303K x V2

83250 = 303V2

V2 = 83250/303

V2 = 274.75 mL

Thus, the volume will be 274.75 mL

Answer: 13.2g of ZnCl2

Explanation:

Answer: it’s d on edunuity. (Hydrogen and oxygen)

Explanation:  

Answer: synthesis reaction.

Explanation:

The type of reaction represented by the equation is synthesis reaction.

A synthesis reaction is simply defined as reaction in which two or more substances react to produce a single new substance which has characteristics different from the reactants.

Considering the equation given, we can conclude as follow:

2H₂ + O₂ —> 2H₂0 + energy

The reaction is a synthesis reaction since H₂ and O₂ combined to produce a single product i.e H₂O

Learn more about synthesis reaction:

https://brainly.com/question/24936069

Answer:

2.25M

Explanation:

C1V1 = C2V2

25×C1 = 125 × 0.45

C1 = 125×0.45/25

C1 = 2.25M

Answer:

Mo(CO)5 is the intermediate in this reaction mechanism.

Explanation:

The reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products. Reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism.

In this reaction mechanism, Mo(CO)5 is the product of 1st reaction and then it is used as a reactant in 2nd reaction. So, Mo(CO)5 is the reaction intermediates.

The overall balanced equation would be,

Mo(CO)6 + P(CH3) ↔ CO + Mo(CO)5 +  P(CH3)3

Answer:

In terms of molecularity, Step 1 is

⇒ unimolecular

and Step 2 is

⇒ bimolecular.

Explanation:

EDGE 2023

Answer:

All carbohydrates, including sugar, therefore contain the same three elements: carbon, hydrogen and oxygen. Different arrangements of these elements form single units to make different types of carbohydrates. Glucose, for instance, is a single-unit carb with six carbon atoms, 12 hydrogen atoms and six oxygen atoms.

Explanation:

Final answer:

A molecule of glucose is composed of carbon, hydrogen, and oxygen, with the chemical formula C6H12O6, featuring six carbon atoms, twelve hydrogen atoms, and six oxygen atoms arranged in a specific structure.

Explanation:

The elements that make up a molecule of glucose are carbon (C), hydrogen (H), and oxygen (O). The chemical formula for glucose is C₆H₁₂O₆. This indicates that each glucose molecule consists of six carbon atoms, twelve hydrogen atoms, and six oxygen atoms. These elements are arranged in a specific structure where each carbon atom forms four bonds connecting to other carbon atoms, as well as to hydrogen and oxygen atoms. The six carbon atoms form the backbone of the glucose molecule, with the oxygen and hydrogen atoms attached to this carbon chain.

Explanation:

Yes, a chemical reaction can happen with only one substance.

A typical example of such reaction is the radioactive decay.

Radioactive decay is the loss of elementary particles from an unstable nucleus, ultimately changing the unstable element into another more stable element. .

When radioactive elements are let alone, they decompose to form  stable harmless elements.

An example of radioactive decay is attached in the image below;

Answer:

No

Explanation:

A chemical reaction cannot happen with water alone. This is because, a chemical reaction must involve collision of particles from different reactants in order to give a product. No chemical specie can react with itself without some kind of interaction with another chemical specie which may or may not enter into the rate equation for that reaction.

Only nuclear reactions are spontaneous and involve only one reactant for spontaneous radioactive decay.

The physical property that depends on the ability of electrons to move easily is electrical conductivity, which is characteristic of materials like metals that are good conductors of electricity.

B is correct

The physical property of materials that depends on the ability of electrons to move easily is electrical conductivity. Materials with high electrical conductivity, such as metals, allow electrons to flow through them with ease, facilitating the flow of electric current.

Examples include silver and copper, which are widely used in electrical wiring and components due to their excellent conductivity. In contrast, materials with low electrical conductivity or insulators, like rubber or glass, do not allow electrons to move freely, inhibiting the flow of electric current.

When considering the options provided, solubility in water and melting points are not directly related to the movement of electrons, and brittleness is a mechanical property that describes how easily a material can break or shatter.

https://brainly.com/question/31668005

#SPJ2

Explanation:

firstly you find for the molar mass of the iron(ii)hydroxide

and then use this formula

mole=mass/molar mass and then slot in your given values

and then you will get

2.57moles

the answer is 2.57 mole of iron(ii)hydroxide

Answer:

I think the answer is

(H2O) water molecule

Answer:

140.25g of CO2

Explanation:

First, let us write a balanced equation showing how CO2 is produced from CH4. This is illustrated below:

When CH4 undergoes combustion it produces CO2 and H2O according to the balanced equation below:

CH4 + 2O2 —> CO2 + 2H2O

Next, let us calculate the mass of the CH4 that reacted and the mass of CO2 produced from the balanced equation. This is shown below:

Molar Mass of CH4 = 12 + (4x1) = 12 + 4 = 16g/mol

Molar Mass of CO2 = 12 + (2x16) = 12 + 32 = 44g/mol

From the balanced equation above,

16g of CH4 produced 44g of CO2.

Therefore, 51g of CH4 will produce = (51 x 44)/16 = 140.25g of CO2.

From the calculations made above, we can see that 51g of CH4 produced 140.25g of CO2

Answer:

139.91 g CO2 to the nearest hundredth.

Explanation:

CH4 +  2O2 ---->  CO2 +  2H2O

Using the molar masses of the chemicals:

 (12.011 + 4*1.008) g CH4 produces  (12,011 + 32) g CO2

So 51 g of CH4 produces   [51 * (12,011 + 32] /  [ (12.011 + 4*1.008) ]

=  139.91 g CO2.

Answer:

Assume that:

n = number of moles

m = mass of substance

M = molar mass (equivalent to atomic weight in the periodic table)

n

=

m

÷

M

The mass (m) of Fe is found.

Your next step is to find the molar mass (M) of Fe.

The molar mass of Fe is 55.9 g/mol.

To find the number of moles for Fe:

n = 112 grams

÷

55.9 g/mol = 2.003577818 moles of Fe(don't round because this is not your final answer or you'll get inaccurate final answer)

Hope it helps you

Plz mark brainliest and follow me ❤❤❤❤

Explanation:

Final answer:

Photosynthesis transforms carbon dioxide and water into glucose and oxygen using sunlight energy. This process adheres to the law of conservation of mass, reflecting the transformation of matter without any loss. The resulting carbohydrates are moved within the plant through the phloem, driven by osmotic forces.

Explanation:

How Matter Moves and Changes Through Photosynthesis

Photosynthesis is the biological process that allows plants to convert light energy into chemical energy. During this process, matter in the form of carbon dioxide and water is transformed into glucose and oxygen. Energy from sunlight energizes electrons which, in turn, facilitate the production of energy-carrying molecules like NADPH and ATP during the 'light cycle'. This energy is then used in the Calvin Cycle, or 'dark cycle', to fix carbon dioxide from the atmosphere into glucose, a process that is vital for the cycling of matter and flow of energy through ecosystems.

The law of conservation of mass dictates that the amount of matter remains constant in this process. So, the uptake of carbon dioxide and water and the release of oxygen and glucose reflect a transformation, not a loss of matter. These biochemical processes of photosynthesis support life on Earth, as they produce the basic nutrients that form the foundation of the food chain and release oxygen that is essential for the respiration of most living organisms.

Carbohydrates like sucrose, synthesized during photosynthesis, are then transported from the sites of production to where they are needed within the plant through the phloem. This movement is driven by osmotic forces that arise due to variations in solute concentrations, thus showing how matter moves within the plant system.

Answer: listen to relaxing music

Answer:

554 torr

Explanation:

i got it right on the test.

Answer:

554

Explanation:

Answer: It's D

Explanation:A and B cant be it and C has nothing to do with it because it doesnt talk about evolution while D does that the older fossils resemble us