what would happen if you forgot to add phenolphthalein indicator solution to the vinegar in step 3? Explain using full sentences

The total volume of gas that forms, when collected over water at a temperature of 25 °C and a total pressure of 742 mmHg, cannot be determined without additional information.

Therefore, without the molar amount of O2 produced and the vapor pressure of water, the total volume of gas that forms cannot be determined.

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The volume of the gas at STP = 35.01 L

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure).

In general, the gas equation can be written  

\(\large {\boxed {\bold {PV = nRT}}}\)

where  

P = pressure, atm  

V = volume, liter  

n = number of moles  

R = gas constant = 0.08206 L.atm / mol K  

T = temperature, Kelvin  

V=17.4 L

T = 23 + 273 = 296 K

P = 2.18 atm

\(\tt mol=n=\dfrac{PV}{RT}\\\\n=\dfrac{2.18\times 17.4}{0.082\times 296}\\\\n=1.563\)

The volume of the gas occupy at STP :

\(\tt 1.563\times 22.4=35.01~L\)

The ion that will form a compound with bicarbonate in a 1:1 cation to anion ratio is hydrogen ion (H+).

Bicarbonate (HCO3-) is an anion that can combine with a cation to form a salt. In a 1:1 cation to anion ratio, the cation must have a charge of +1 to balance the -1 charge of the bicarbonate anion. Hydrogen ion (H+) is a monovalent cation with a charge of +1, and it readily combines with bicarbonate to form the salt hydrogen bicarbonate (H2CO3), also known as carbonic acid. This salt is important in the regulation of pH in the body and is involved in processes such as respiration and acid-base balance.

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Find the number of moles in each reactant in the formula CO + 2 H2 CH3OH.

= 174371 g = 174.4 kg.

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Marble is not used as a material in decorative fixtures because it is easily corroded by acidic substances. The most common fixture style of drinking fountain and water cooler is wall-mounted.

1. Marble is a naturally occurring stone that is formed from limestone under high pressure and temperature. It is known for its beautiful veining, durability, and strength. Marble is commonly used in construction, such as for flooring, countertops, and statues.

However, marble is not used as a material in decorative fixtures because it is easily corroded by acidic substances, such as vinegar or lemon juice. This can cause the marble to etch, dull, or discolor, which can ruin the beauty of the decorative fixture. Therefore, other materials, such as ceramic, porcelain, or glass, are used instead.

2. Drinking fountains and water coolers are commonly found in public places, such as schools, parks, and offices. They provide a convenient and hygienic way for people to drink water. There are several styles of drinking fountains and water coolers, but the most common style is wall-mounted.

This style is attached to the wall and is usually connected to a water supply and drain. Wall-mounted drinking fountains and water coolers are easy to install, maintain, and clean, making them a popular choice for public areas.

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Answer:

to send rovers to the Moon.

Explanation:

Apollo refers to the project led by The National Aeronautics and Space Administration (NASA) to study the environment of the Moon in the 1960s and 1970s. Project Apollo 's objectives went beyond landing humans on the moon and getting them back safely to Earth. They included attempting to establish technology to meet other national space interests, to carry out a plan of scientific observation of the Moon, enhancing human capacity to work in the lunar climate, etc.

Answer:

man this was the ONLY question i missed i would have have a 100% accuracy!

Explanation:

Answer:

thats when you mix so that's friction

Explanation:

1 lemonade+1 lemonade=2 lemonaede

and i hope the lemonade tast good! :D

The type of change that has occurred on mixing ice cubes, water ,sugar, koolaid mix is a physical change.

Physical changes are defined as  those changes which affect only the form of a substance but not it's chemical composition. They are used to separate mixtures in to chemical components but cannot be used to separate compounds to  further simpler compounds.

Physical changes are always reversible  by using physical means and involve a change in the physical properties.Examples of physical changes include melting,boiling , change in texture, size,color,volume and density.Magnetism, crystallization, formation of alloys are all reversible  changes and hence physical changes.

They involve only rearrangement of atoms and are often characterized to be changes which are reversible.

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Answer:

True

Explanation:

Answer:

Explanation:

Remark

It's true.

That's how the  periodic table is designed. Hydrogen is #1 and #116 is the latest entry. It is known as  flerovium and livermorium. I'm not sure if that and shouldn't be an or, but that is your answer.

Answer:

61 neutrons.

Answer:

61 neutrons

Explanation:

the number of neutrons in silver is 61

Answer:

Explanation:

4,5 diethyl-2 fluoro-3-methylheptanal

The significance of carbon bonding in biological molecules because it enables the synthesis of a variety of chemical compounds that are necessary for the survival and proper functioning of all living things.

Because it is the foundation for the structural and functional variety of biological molecules, carbon bonding plays a crucial role in these molecules. Carbon is a remarkable element that may be used to make a diverse range of chemical compounds because it can form stable covalent bonds with so many different elements, including other carbon atoms, hydrogen, oxygen, nitrogen, sulphur, and phosphorus. Carbon-based compounds make up the majority of biological molecules, including proteins, lipids, nucleic acids, and carbohydrates. These molecules are important for all living organisms to function and live.

Carbohydrates like sugars and starches are the primary energy source for all living things. Their structure is composed of covalently bonded simple carbohydrates like glucose and fructose. Fats and oils are lipids that are essential for the development of cell membranes as well as energy storage and insulation. Covalent bonds hold the fatty acids that make up their structure together. Nucleic acids like DNA and RNA make up the genetic material found in all living organisms. They are composed of nucleotides, which are connected by covalent bonds and are in charge of storing and transmitting genetic information. Proteins are essential for structure, regulation, and catalytic reactions in living things. The amino acids that makeup them are joined together by peptide bonds in their construction. 

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The correct answer is C. It is rapidly converted to energy when it meets an ordinary electron, resulting in matter-antimatter annihilation.

In the proton-proton chain, the first step involves the fusion of two protons to form a deuterium nucleus (a proton and a neutron) and a positron (antielectron) and a neutrino. The positron is a form of antimatter with the same mass as an electron but with a positive charge. When the positron encounters an ordinary electron, they annihilate each other, releasing energy in the form of gamma rays. This process is known as matter-antimatter annihilation. This conversion of matter into energy is a fundamental concept in physics and is used in various applications, including nuclear power generation and medical imaging. In the context of the Sun, the energy released from these reactions is what powers the Sun and allows it to shine.

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The symbol [He] represents the electron configuration of a helium (He) atom. Helium has two electrons, and its electron configuration is 1s^2.

The [He] notation is used to indicate that the core electrons of the element being referred to have the same electron configuration as a helium atom.

In the case of [He], it implies that all electrons in the 1s orbital are considered core electrons. Core electrons are the electrons that are closest to the nucleus and are not involved in chemical bonding or interactions with other atoms. They are generally not shown in chemical equations or reactions as they do not participate in the chemical behavior of an element.

So, the symbol [He] implies that the core electrons include the two electrons in the 1s orbital of the element being described.

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Explanation:

There are several pieces of evidence that can be used to identify chemical changes, other than a change in color. Some of these include the production of a gas, the formation of a precipitate, a change in temperature, and a change in the state of matter (e.g. from a solid to a liquid or vice versa). For example, if a solid substance is added to a liquid and bubbles of gas are produced, this is evidence of a chemical change. Similarly, if two clear solutions are mixed together and a solid precipitate forms, this is also evidence of a chemical change. Additionally, if a substance is heated and it changes from a solid to a liquid or from a liquid to a gas, this is also evidence of a chemical change.

Yes!

Explanation:

If density is greater, the object sinks. Saturn is mainly composed of the lightest two gases known, hydrogen and helium. It is the only planet in our solar system whose density is less than water.

Atomic number equals the number of protons or electrons. Atomic mass equals the number of protons and neutrons

Answer: 19.20 g. Explanation: ∵ mass % = [mass of solute/mass of solution] x 100.Apr 30, 2019

Explanation: I don't know if this helped but uh yeah.

Answer:

a-it causes friction to increase

Explanation:

Imagine you have a smooth sheet of ice and you slide a smooth box across it. It'll slide petty far because there's not much friction. The two smooth surfaces aren't "grabbing" each other very much.

Now try to slide that same box over gravel. It's not going to go nearly as far. It gets caught by all the little bits of rock sticking up and falls into the divots.

Another example would be to think of sliding two smooth pieces of paper across each other as opposed to trying to slide a set of velcro the same way.

Whenever you have to answer questions about conceptual friction, it helps to picture it big and in real world examples!

Answer:

It goes grain of salt water molecule human skin cell then E coli bacteria

Answer:

See Explanaton

Explanation:

The law of multiple proportions states that when two same elements form more than a compound, the different masses of one element that combine with the same mass of the other element are in the ratio of small whole numbers.

Oxide A

3.50g of sulphur combined with 6.00g of oxygen

Oxygen:Sulphur = 6 : 3.5

Oxide B

2.80g of sulphur combined with 9.55g

Oxygen : Sulphur = 9.55 : 2.8

Therefore:

The ratio of Oxygen to Sulphur in Oxides A and B is:

\(\dfrac{\text{Oxygen}}{\text{Sulphur}} \implies \dfrac{6}{3.5}:\dfrac{9.55}{2.8} = \dfrac{1.7}{1}:\dfrac{3.4}{1}=1:2\)

Ratio of Oxygen=1:2

There is exactly twice in Oxide B as in Oxide A.

This result illustrates the law of multiple proportions.

The molecular weight of caffeine is approximately 194.22 g/mol.

To calculate the molecular weight of caffeine (C8H10N4O2), you need to add the atomic weights of all the atoms present in the formula. The molecular weight can be found by using the periodic table and the atomic weights for each element:

C (Carbon): 12.01 g/mol
H (Hydrogen): 1.01 g/mol
N (Nitrogen): 14.01 g/mol
O (Oxygen): 16.00 g/mol

Now, multiply each atomic weight by the number of atoms present in the formula and add them together:

C: 12.01 g/mol × 8 = 96.08 g/mol
H: 1.01 g/mol × 10 = 10.10 g/mol
N: 14.01 g/mol × 4 = 56.04 g/mol
O: 16.00 g/mol × 2 = 32.00 g/mol

Add all these values to get the molecular weight of caffeine:

96.08 + 10.10 + 56.04 + 32.00 = 194.22 g/mol

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Answer:

d . al of these

Explanation:

all of that are used when you in spaceship

Answer:

pH = 5.9

Explanation:

The equation to find pH is as follows:

pH = -log[H+]

We are not given [H+] so we have to find it given the value of [OH-].

To find [H+] from [OH-], use this equation:

\([H^{+} ]=\frac{1.0*10^{-14} }{[OH^{-}] }\)

Plug in [OH-] and solve for [H+]:

\([H^{+} ]=\frac{1.0*10^{-14} }{7.1*10^{-9} }\)

[H+] = \(1.41 * 10^{-6}\)

Now that we have found [H+] plug it into the pH equation and solve:

\(pH =-log(1.41*10^{-6} )\)

pH = 5.9

So, the pH of the solution would be 5.9

Hope this helps!! Ask questions if you need!

The classification is:

Organic substances known as amino acids have both amino and carboxylic acid functional groups. Only 22 of the hundreds of amino acids found in nature are alpha amino acids, which are by far the most common and make up proteins. Only 22 alpha amino acids are found in the genetic code. Alpha-, beta-, gamma-, or delta-amino acids can be categorized according to where the main structural functional groups are located; further classifications relate to polarity, ionization, and the kind of side chain group (aliphatic, acyclic, aromatic, containing hydroxyl or sulfur, etc.). Amino acid residues are the second-largest component of human muscles and other tissues, behind water, in the form of proteins.

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Answer:

a hypothesis is an assumption before further investigation (a guess)

Explanation:

hello hello I hope this helps LOL have a nice dayyyyy

Answer:

after gathering initial data and defining the research​

Explanation:

"Hypothesis" refers to the researcher's scientific guess or prediction about the outcome of a research. Such expectation is being done after gathering initial data and defining the research, which means it happens before even conducting the study.

Under hypothesis, the variables' relationships are being predicted but with no evidence yet. It is very important to make a hypothesis according to three criteria: specificity and clearness, testability and falsifiability.

Glucose can be found in foods like honey. It goes through chemical reactions with oxygen, which forms new molecules and provides energy for cells. The correct option is D.

Glucose, a form of sugar generated after the digestion of carbohydrates and other nutrients, is transported throughout the body via the bloodstream and gives cells energy.

Glycogen is mostly stored as an energy reserve in the liver. To maintain blood sugar levels within a normal range, the levels of insulin, glucagon, and other hormones increase and decrease.

Therefore, the correct option is D. It goes through chemical reactions with oxygen, which forms new molecules and provides energy for cells.

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The question is incomplete. Your most probably complete question is given below: the image for the full question is added.

If heat was lost from the calorimeter while the ice was melting, the measured value of the molar heat of fusion would be lower than the true value.

This is because some of the heat that is released when the ice melts would be absorbed by the surroundings (including the calorimeter and the air), instead of being used to heat up the water in the calorimeter.

The molar heat of fusion is defined as the amount of heat required to melt one mole of a substance at its melting point, with no change in temperature. It is usually determined experimentally using a calorimeter, which is an insulated container that can measure changes in temperature and heat flow.

In the experiment to measure the molar heat of fusion of ice, a known mass of ice is added to a calorimeter containing a known mass of water at a higher temperature. The heat released by the melting ice is absorbed by the water, causing it to cool down. By measuring the change in temperature of the water, the amount of heat released by the melting ice can be calculated, and from this, the molar heat of fusion can be determined.

If some of the heat released by the melting ice is lost to the surroundings, the measured value of the heat released will be lower than the true value, and hence the calculated molar heat of fusion will also be lower than the true value. To obtain a more accurate value of the molar heat of fusion, the heat loss from the calorimeter should be minimized by insulating the calorimeter and conducting the experiment in a thermally stable environment.

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